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Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

A Sealed, UHV Compatible, Soft X-ray Detector Utilizing Gas Electron Multipliers  

SciTech Connect

An advanced soft X-ray detector has been designed and fabricated for use in synchrotron experiments that utilize X-ray absorption spectroscopy in the study a wide range of materials properties. Fluorescence X-rays, in particular C{sub K} at 277eV, are converted in a low pressure gas medium, and charge multiplication occurs in two gas electron multipliers, fabricated in-house from glass reinforced laminate, to enable single photon counting. The detector satisfies a number of demanding characteristics often required in synchrotron environments, such as UHV compatibility compactness, long-term stability, and energy resolving capability.

Schaknowski, N.A.; Smith, G.

2009-10-25T23:59:59.000Z

2

Precision mechanical design of an UHV-compatible artificial channel-cut x-ray monochromator.  

SciTech Connect

A novel ultra-high-vacuum (UHV)-compatible x-ray monochromator has been designed and commissioned at the undulator beamline 8-ID-I at the Advanced Photon Source (APS) for x-ray photon correlation spectroscopy applications. To meet the challenging stability and x-ray optical requirements, the monochromator integrates two new precision angular positioning mechanisms into its crystal optics motion control system: An overconstrained weak-link mechanism that enables the positioning of an assembly of two crystals to achieve the same performance as a single channel-cut crystal, the so called 'artificial channel-cut crystal'; A ceramic motor driven in-vacuum sine-bar mechanism for the double crystal combined pitch motion. The mechanical design of the monochromator, as well as the test results of its positioning performance are presented in this paper.

Shu, D.; Narayanan, S.; Sandy, A.; Sprung, M.; Preissner, C.; Sullivan, J.; APS Engineering Support Division

2007-01-01T23:59:59.000Z

3

Small UHV-compatible gas inlet unit  

Science Journals Connector (OSTI)

A simple versatile device is described for introducing a dose of a selected pure gas into an UHV system.

S Koc

1987-01-01T23:59:59.000Z

4

UHV-compatible magnetic material for atom optics  

Science Journals Connector (OSTI)

Magnetic videotape is of great interest for trapping and guiding cold atomic vapors, but was hitherto considered unsuitable for manipulating Bose–Einstein condensates (BEC) because of the presumed evolution of...

S.A. Hopkins; E.A. Hinds; M.G. Boshier

2001-07-01T23:59:59.000Z

5

Formation of compressed flat electron beams with high transverse-emittance ratios  

SciTech Connect

Flat beams—beams with asymmetric transverse emittances—have important applications in novel light-source concepts and advanced-acceleration schemes and could possibly alleviate the need for damping rings in lepton colliders. Over the last decade, a flat beam generation technique based on the conversion of an angular-momentum-dominated beam was proposed and experimentally tested. In this paper we explore the production of compressed flat beams. We especially investigate and optimize the flat beam transformation for beams with substantial fractional energy spread. We use as a simulation example the photoinjector of Fermilab’s Advanced Superconducting Test Accelerator. The optimizations of the flat beam generation and compression at Advanced Superconducting Test Accelerator were done via start-to-end numerical simulations for bunch charges of 3.2 nC, 1.0 nC, and 20 pC at ?37??MeV. The optimized emittances of flat beams with different bunch charges were found to be 0.25???m (emittance ratio is ?400), 0.13????m, 15 nm before compression, and 0.41???m, 0.20???m, 16 nm after full compression, respectively, with peak currents as high as 5.5 kA for a 3.2?nC flat beam. These parameters are consistent with requirements needed to excite wakefields in asymmetric dielectric-lined waveguides or produce significant photon flux using small-gap micro-undulators.

Zhu, J. [Fermilab; Institute of Fluid Physics, CAEP, China; Piot, P. [Northern Illinois University; Fermilab; Mihalcea, D. [Northern Illinois University; Prokop, C. R. [Northern Illinois University

2014-08-01T23:59:59.000Z

6

Substrate effects on the formation of flat Ag films on (110) surfaces of III-V compound semiconductors  

Science Journals Connector (OSTI)

Ag films grown at 135 K on (110) surfaces of III-V compound semiconductors and annealed at room temperature are investigated by scanning tunneling microscopy and low-energy electron diffraction. Ag films on Ga-V semiconductors are well ordered, atomically flat, and exhibit a specific critical thickness, which is a function of the substrate material. Films grown on In-V semiconductors are still rather flat, but significantly more disordered. The (111) oriented Ag films on III-arsenides and III-phosphides exhibit a clear twofold superstructure. Films on III-antimonides exhibit threefold low-energy electron diffraction images. The morphology of the Ag films can be explained on the basis of the electronic growth mechanism.

K.-J. Chao, Zhenyu Zhang, Ph. Ebert, and C. K. Shih

1999-08-15T23:59:59.000Z

7

Beamline 12.0.1  

NLE Websites -- All DOE Office Websites (Extended Search)

Detectors Scienta SES-100 (angle-resolved photoemission), R3000, R4000 Sample format UHV-compatible solids Sample preparation Sample manipulator with five degrees of freedom;...

8

Beamline 9.3.2  

NLE Websites -- All DOE Office Websites (Extended Search)

radiation Detectors Channeltrons Spot size at sample 1 mm x 1 mm Sample format UHV-compatible solids up to 10 mm in diameter Sample preparation Sputtering, evaporation,...

9

Design and characterization of an UHV compatible artificial channel cut monochromator.  

SciTech Connect

We present design and characterization results of a novel ultra-high-vacuum-compatible artificial channel-cut monochromator that has been installed at the undulator beamline 8-ID-I at the Advanced Photon Source. The monochromator has been designed to meet the challenging stability and optical requirements of the x-ray photon correlation spectroscopy program hosted at this beamline. In particular, the device incorporates a novel in-vacuum sine-bar drive mechanism for the combined pitch motion of the two crystals and a flexure-based high-stiffness weak-link mechanism for fine tuning the pitch and roll of the second crystal relative to the first crystal.

Narayanan, S.; Shu, D.; Sandy, A.; Sprung, M.; Preissner, C.; Sullivan, J.; X-Ray Science Division

2006-01-01T23:59:59.000Z

10

Flat | Open Energy Information  

Open Energy Info (EERE)

Flat Flat Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Flat Dictionary.png Flat: A relatively smooth landscape with no topographic relief Other definitions:Wikipedia Reegle Topographic Features List of topographic features commonly encountered in geothermal resource areas: Mountainous Horst and Graben Shield Volcano Flat Lava Dome Stratovolcano Cinder Cone Caldera Depression Resurgent Dome Complex The North Brawley Geothermal Power Plant is located in the Imperial Valley, California, a broad valley with flat topographic features. http://www.pcl.com/Projects-that-Inspire/Pages/North-Brawley-Geothermal-Power-Plant.aspx# Flat terrains are characterized by the absence of major topographic features. Flat topography is typically encountered in areas that have

11

Diesel prices flat  

U.S. Energy Information Administration (EIA) Indexed Site

Diesel prices flat The U.S. average retail price for on-highway diesel fuel saw no movement from last week. Prices remained flat at 3.89 a gallon on Monday, based on the weekly...

12

Rocky flats teams forming  

SciTech Connect

Bidding teams are shaping up to go after the $3.5-billion, five-year contract to manage ongoing operations and cleanup of the US Dept. of Energy`s Rocky Flats nuclear weapon plant near Denver.

NONE

1994-08-01T23:59:59.000Z

13

Cleanup at Rocky Flats  

NLE Websites -- All DOE Office Websites (Extended Search)

David L. Clark, Los Alamos National Laboratory David L. Clark, Los Alamos National Laboratory The Rocky Flats Environmental Technology Site (RFETS) is an environmental cleanup site located about 16 miles northwest of downtown Denver (Fig 1). Two decades of routine monitoring have shown that the environment around RFETS is contaminated with actinide elements (U, Pu, Am) from site operations, [1] and RFETS has been designated by the U.S. Environmental Protection Agency (EPA) as a Superfund cleanup site. Until December 1989, the Rocky Flats Plant made components for nuclear weapons using various radioactive and hazardous materials, including plutonium, uranium and beryllium. Nearly 40 years of nuclear weapons production left behind a legacy of contaminated facilities, soils, and ground water. More than 2.5 million people live within a 50 mile radius of the site; 300,000 of those live in the Rocky Flats watershed.

14

The Theoryof Maximally Flat  

E-Print Network (OSTI)

TRANSACTIONSON AUDIO AND ELECTROACOUSTICS, VOL. AU-20, NO. 3, AUGUST 1972 dynamic drag of the voice coil be made as flat as thedesigner'sconstraints permit. II. Theory Let the dc resistance of the voice coil, rl the mechanical re- sistance of the cone suspension, and SIthe suspension stiff- ness or spring

California at Berkeley, University of

15

Flat Oval Spiral Duct Deflection  

E-Print Network (OSTI)

(c) 20 Gauge and 48 inch Flat Span (d) 24 Gauge and 6 inch Flat Span (e) 24 Gauge and 14 inch Flat Span (f) 26 Gauge and 25 inch Flat Span Figure 7.2.: Unreinforced Positive 35 (g) (cont.) 18 Gauge and 63 inch Flat Span (h) (cont.) 20 Gauge and 14.... [18] Ducts can be used in many applications some; applications might be high temperature or even corrosive or abrasive. Ducts are generally used in industrial ventilation, air pollution, and dust collecting systems. Metals can corrode from chemicals...

Daugherty, Matthew

2014-03-10T23:59:59.000Z

16

Enforcement Letter - Rocky Flats  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1, 2000 1, 2000 Mr. Robert G. Card [ ] Kaiser-Hill Company, L.L.C Rocky Flats Environmental Technology Site 10808 Highway 93, Unit B Golden, CO 80403-8200 Subject: Enforcement Letter Dear Mr. Card: This letter refers to an evaluation by the Department of Energy (DOE) of noncompliance report number NTS-RFO--KHLL-SITEWIDE-2000-0005, which describes noncompliances with the design and procurement requirements of 10 CFR 830.120 (Quality Assurance Rule). 10 CFR 830.120(c)(2)(iii) requires that procured items and services shall meet established requirements and perform as required; 10 CFR 830.120(c)(2)(ii) requires that design work including changes, shall incorporate applicable requirements and design bases; 10 CFR 830.120(c)(2)(iv) requires that inspection and testing of specified items, services, and processes shall be conducted

17

Design of a UHV-compatible rf plasma source and its application to self-assembled layers of CoPt{sub 3} nanoparticles  

SciTech Connect

A compact, versatile, and simple rf plasma source with capacitive coupling compatible to ultrahigh vacuum (UHV) requirements was designed and built to allow sequences of sample surface modification in plasma and surface preparation and analysis in vacuum without breaking the vacuum. The plasma source was operated at working pressures of less than 1 to a few millibars. Sample transfer to UHV was performed at pressures around 10{sup -9} mbar. For easy integration into an existing UHV setup, the sample recipient and transfer system were made to accept standard commercial sample holders. Preliminary experiments were performed by exposing monolayers of colloidal CoPt{sub 3} nanoparticles to oxygen and hydrogen plasmas. The structural and chemical effects of the plasma treatments were analyzed with scanning electron microscopy and x-ray photoelectron spectroscopy.

Gehl, B.; Leist, U.; Aleksandrovic, V.; Nickut, P.; Zielasek, V.; Weller, H.; Al-Shamery, K.; Baeumer, M. [Institut fuer Angewandte und Physikalische Chemie, Universitaet Bremen, Leobener Strasse NW2, D-28359 Bremen (Germany); Institut fuer Reine und Angewandte Chemie, Universitaet Oldenburg, Postfach 2503, D-26111 Oldenburg (Germany); Institut fuer Physikalische Chemie, Universitaet Hamburg, Grindelallee 117, D-20146 Hamburg (Germany); Institut fuer Reine und Angewandte Chemie, Universitaet Oldenburg, Postfach 2503, D-26111 Oldenburg (Germany); Institut fuer Angewandte und Physikalische Chemie, Universitaet Bremen, Leobener Strasse NW2, D-28359 Bremen (Germany); Institut fuer Physikalische Chemie, Universitaet Hamburg, Grindelallee 117, D-20146 Hamburg (Germany); Institut fuer Reine und Angewandte Chemie, Universitaet Oldenburg, Postfach 2503, D-26111 Oldenburg (Germany); Institut fuer Angewandte und Physikalische Chemie, Universitaet Bremen, Leobener Strasse NW2, D-28359 Bremen (Germany)

2006-08-15T23:59:59.000Z

18

Flat-to-Flat Solder Seal Andrey Elagin1  

E-Print Network (OSTI)

surfaces are coated with 200nm of NiCr (80:20%) and 200nm of Cu If long time in air before sealing ­ clean1 Flat-to-Flat Solder Seal Andrey Elagin1 , Henry Frisch1 , Mary Heintz1 , Richard Northrop1 A complete LAPPD glass tile except for an aluminum photo-cathode top seal by compression on a viton o

19

Windy Flats | Open Energy Information  

Open Energy Info (EERE)

Flats Flats Jump to: navigation, search Name Windy Flats Facility Windy Flats Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Cannon Power Group Developer Cannon Power Group Location North shore of Columbia River Coordinates 45.699622°, -120.774622° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.699622,"lon":-120.774622,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

20

Soil Decontamination at Rocky Flats  

Science Journals Connector (OSTI)

During the last few years, many articles have appeared in newspapers and journals concerning radioactive contamination around Rocky Flats.1,2 The amount of plutonium in the soil has been of particular interest. T...

R. L. Olsen; J. A. Hayden; C. E. Alford…

1980-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Independent Oversight Review, Rocky Flats Environmental Technology...  

Office of Environmental Management (EM)

Review, Rocky Flats Environmental Technology Site - March 2000 Independent Oversight Review, Rocky Flats Environmental Technology Site - March 2000 March 2000 Review of the Rocky...

22

Revegetation of the Rocky Flats Site | Department of Energy  

Energy Savers (EERE)

Flats Site Revegetation of the Rocky Flats Site Revegetation of the Rocky Flats, Colorado Site Revegetation of the Rocky Flats Site More Documents & Publications Landfill...

23

Beamline 7.3.1  

NLE Websites -- All DOE Office Websites (Extended Search)

7.3.1 Print 7.3.1 Print Photoemission electron microscope PEEM2 Scientific disciplines: Magnetism, materials, surface science, polymers Note: This beamline is NOT open to general users. GENERAL BEAMLINE INFORMATION Operational Yes, but not open to users Source characteristics Bend magnet Energy range 180-1500 eV Monochromator SGM Calculated flux (1.9 GeV, 400 mA) 3 x 1012 photons/s/0.1%BW at 800 eV (linearly polarized) Resolving power (E/ΔE) 1,000 Endstations Photoemission electron microscope (PEEM2) Characteristics X-ray absorption spectromicroscopy Spatial resolution Below 100 nm Detectors Slow scan CCD Spot size at sample 30 x 30 µm Sample format UHV-compatible flat, conductive samples up to 1 cm2 in area Sample preparation Sputter-cleaning, heating, e-beam and sputter evaporation, LEED, transfer capability, magnet (1 kOe)

24

Beamline 7.3.1  

NLE Websites -- All DOE Office Websites (Extended Search)

7.3.1 Print 7.3.1 Print Photoemission electron microscope PEEM2 Scientific disciplines: Magnetism, materials, surface science, polymers Note: This beamline is NOT open to general users. GENERAL BEAMLINE INFORMATION Operational Yes, but not open to users Source characteristics Bend magnet Energy range 180-1500 eV Monochromator SGM Calculated flux (1.9 GeV, 400 mA) 3 x 1012 photons/s/0.1%BW at 800 eV (linearly polarized) Resolving power (E/ΔE) 1,000 Endstations Photoemission electron microscope (PEEM2) Characteristics X-ray absorption spectromicroscopy Spatial resolution Below 100 nm Detectors Slow scan CCD Spot size at sample 30 x 30 µm Sample format UHV-compatible flat, conductive samples up to 1 cm2 in area Sample preparation Sputter-cleaning, heating, e-beam and sputter evaporation, LEED, transfer capability, magnet (1 kOe)

25

Increase in uranium concentration in streams draining Rocky Flats, Colorado  

Science Journals Connector (OSTI)

Uranium has been determined by fission track measurements of two suites of water samples taken at different times from a variety of surface waters in an area in central Colorado. Although this area surrounds the Rocky Flats nuclear plant at which parts for weapons are fabricated, the variations in U are inferred to be influenced most strongly by the distance of water flow across soil derived from the U-rich Laramie Formation. This flow produces progressive increases in U concentrations as flow proceeds eastward and hence is much more closely related to the local geochemistry and geology than to the presence of the Rocky Flats plant.

A.C. Delany; R.L. Fleischer

1978-01-01T23:59:59.000Z

26

The damped natural oscillations of a gas flowing past a cascade of flat plates  

Science Journals Connector (OSTI)

We solve the problem of the natural oscillations of a gas flowing past a cascade of flat plates under the Joukowsky-Chaplygin ... case part of the energy of the oscillating gas is consumed in the formation of a ....

V. B. Kurzin

27

Hydrogeologic characterization report for the Rocky Flats environmental technology site  

SciTech Connect

The Denver groundwater basin encompasses approximately 6,700 square miles, extending east from the Front Range of the Rocky Mountains. This structural basin contains four Cretaceous bedrock aquifers overlain by a regional Quaternary alluvial aquifer. The Rocky Flats Site is located on the northwest margin of the basin. The shallow groundwater system at the Rocky Flats Site is divided into upper and lower hydrostratigraphic units (UHSU and LHSU, respectively). The UHSU at the Rocky Flats site comprises Quaternary alluvium, colluvium, valley-fill alluvium, artificial fill, weathered bedrock of the undifferentiated Arapahoe and Laramie formations and all sandstones that are hydraulically connected with overlying surficial groundwater. The LHSU comprises unweathered claystone with interbedded siltstones and sandstones of the undifferentiated Arapahoe and Laramie formations. The contact separating the UHSU and LHSU is identified as the base of the weathered zone. The separation of hydrostratigraphic units is supported by the contrasting permeabilities of the units comprising the UHSU and LHSU, well hydrograph data indicating that the units respond differently to seasonal recharge events, and geochemical data reflecting distinct major ion chemistries in the groundwaters of the UHSU and LHSU. Surface-water/groundwater interactions at the Rocky Flats site generally respond to seasonal fluctuations in precipitation, recharge, groundwater storage, and stream and ditch flow. Effluent conditions are dominant in the spring along western stream segments and influent conditions are common in the late summer and fall along most stream reaches.

Reeder, D.C.; Burcar, S. [S.M. Stoller Corp., Boulder, CO (United States); Smith, R. [RMRS, Golden, CO (United States)] [and others

1996-12-31T23:59:59.000Z

28

Laser illuminated flat panel display  

SciTech Connect

A 10 inch laser illuminated flat panel Planar Optic Display (POD) screen has been constructed and tested. This POD screen technology is an entirely new concept in display technology. Although the initial display is flat and made of glass, this technology lends itself to applications where a plastic display might be wrapped around the viewer. The display screen is comprised of hundreds of planar optical waveguides where each glass waveguide represents a vertical line of resolution. A black cladding layer, having a lower index of refraction, is placed between each waveguide layer. Since the cladding makes the screen surface black, the contrast is high. The prototype display is 9 inches wide by 5 inches high and approximately I inch thick. A 3 milliwatt HeNe laser is used as the illumination source and a vector scanning technique is employed.

Veligdan, J.T.

1995-12-31T23:59:59.000Z

29

Residue management at Rocky Flats  

SciTech Connect

Past plutonium production and manufacturing operations conducted at the Rocky Flats Environmental Technology Site (RFETS) produced a variety of plutonium-contaminated by-product materials. Residues are a category of these materials and were categorized as {open_quotes}materials in-process{close_quotes} to be recovered due to their inherent plutonium concentrations. In 1989 all RFETS plutonium production and manufacturing operations were curtailed. This report describes the management of plutonium bearing liquid and solid wastes.

Olencz, J.

1995-12-31T23:59:59.000Z

30

DHS Flat Stanley Project | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

to implement the Flat Stanley Project to help kids learn about the importance of cybersecurity. By downloading and using the Flat Stanley App, kids will be able to create their...

31

DOE - Office of Legacy Management -- Rocky Flats External Resources  

Office of Legacy Management (LM)

Rocky Flats Stewardship Council Disclaimer Rocky Flats Cold War Museum Disclaimer U.S. Fish and Wildlife Service Rocky Flats National Wildlife Refuge Disclaimer Last Updated: 51...

32

ROCKY FLATS CLOSURE PROJECT EM, AUG 2006 | Department of Energy  

Energy Savers (EERE)

ROCKY FLATS CLOSURE PROJECT EM, AUG 2006 ROCKY FLATS CLOSURE PROJECT EM, AUG 2006 Rocky Flats Closure Project-Lessons Learned-August 2006.pdf More Documents & Publications...

33

Smooth Brome Monitoring at Rocky Flats-2005 Results | Department...  

Energy Savers (EERE)

Smooth Brome Monitoring at Rocky Flats-2005 Results Smooth Brome Monitoring at Rocky Flats-2005 Results Smooth Brome Monitoring at Rocky Flats-2005 Results Smooth Brome Monitoring...

34

Closing Rocky Flats by 2006  

SciTech Connect

Safely accelerating the closure of Rocky Flats to 2006 is a goal shared by many: the State of Colorado, the communities surrounding the site, the U.S. Congress, the Department of Energy, Kaiser-Hill and its team of subcontractors, the site's employees, and taxpayers across the country. On June 30, 2000, Kaiser-Hill (KH) submitted to the Department of Energy (DOE), KH's plan to achieve closure of Rocky Flats by December 15, 2006, for a remaining cost of $3.96 billion (February 1, 2000, to December 15, 2006). The Closure Project Baseline (CPB) is the detailed project plan for accomplishing this ambitious closure goal. This paper will provide a status report on the progress being made toward the closure goal. This paper will: provide a summary of the closure contract completion criteria; give the current cost and schedule variance of the project and the status of key activities; detail important accomplishments of the past year; and discuss the challenges ahead.

Tuor, N. R.; Schubert, A. L.

2002-02-26T23:59:59.000Z

35

Microsoft Word - TurtleFlats_CX  

Office of Environmental Management (EM)

Project Manager - KEWM-4 Proposed Action: Turtle Flats Property Acquisition Funding Fish and Wildlife Project No.: 2011-003-00, BPA-007521 Categorical Exclusion Applied (from...

36

The SLS optics beamline  

E-Print Network (OSTI)

brazing the window is fully UHV compatible and bakable up touses a newly developed UHV compatible, 100 µ m thick, brazed

2006-01-01T23:59:59.000Z

37

PERFORMANCE AND APPLICATION OF A DOUBLE CRYSTAL MONOCHROMATOR IN THE ENERGY REGION 800 < hv < 4500 eV  

E-Print Network (OSTI)

monochromator which is not UHV compatible and does not haveof this ultrahigh-vacuum (UHV) compatible constant deviationmonochromator, and (4) is UHV (~10~ torr) compatible. These

Hussain, Z.

2010-01-01T23:59:59.000Z

38

Whiskey Flats Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Whiskey Flats Geothermal Area Whiskey Flats Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Whiskey Flats Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (1) 9 Exploration Activities (0) 10 References Map: Whiskey Flats Geothermal Area Whiskey Flats Geothermal Area Location Map Area Overview Geothermal Area Profile Location: Nevada Exploration Region: Walker-Lane Transition Zone Geothermal Region GEA Development Phase: none"None" is not in the list of possible values (Phase I - Resource Procurement and Identification, Phase II - Resource Exploration and Confirmation, Phase III - Permitting and Initial Development, Phase IV - Resource Production and Power Plant Construction) for this property.

39

Flat Directions and Baryogenesis in Supersymmetric Theories  

E-Print Network (OSTI)

Flat directions are a generic feature of supersymmetric theories. They are of cosmological interest because they can lead to coherent production of scalars. In the early universe such flat directions could be dangerous due to the potentially large energy density and the late decay of the associated scalars when they have only $1/M_p$ couplings (Polonyi problem). On the other hand, flat directions among the standard model fields can carry baryon number and lead to a possible mechanism for baryogenesis (Affleck Dine baryogenesis). When considering the cosmological consequences of the flat directions, it is important to take into account the soft potential with curvature of order the Hubble constant due to supersymmetry breaking in the early universe. In this talk, we discuss flat directions, their potential cosmological implications focusing on Affleck-Dine baryogenesis, and how the standard picture of their evolution must be modified in the presence of the large supersymmetry breaking in the early universe.

Lisa Randall

1995-07-08T23:59:59.000Z

40

Rocky Flats ash test procedure (sludge stabilization)  

SciTech Connect

Rocky Flats Ash items have been identified as the next set of materials to be stabilized. This test is being run to determine charge sizes and soak times to completely stabilize the Rocky Flats Ash items. The information gathered will be used to generate the heating rampup cycle for stabilization. This test will also gain information on the effects of the glovebox atmosphere (moisture) on the stabilized material. This document provides instructions for testing Rocky Flats Ash in the HC-21C muffle furnace process.

Winstead, M.L.

1995-09-14T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Characterization of Plutonium in Maxey Flats Radioactive Trench Leachates  

Science Journals Connector (OSTI)

...leachates at the Maxey Flats radioactive waste disposal site exists as dissolved...leachates at the Maxey Flats radioactive waste disposal site exists as dissolved...leachates at the Maxey Flats radioactive waste disposal site exists as dissolved...

JESS M. CLEVELAND; TERRY F. REES

1981-06-26T23:59:59.000Z

42

REVEGETATION OF THE ROCKY FLATS SITE, COLORADO  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

REVEGETATION OF THE ROCKY FLATS SITE, COLORADO REVEGETATION OF THE ROCKY FLATS SITE, COLORADO Jody K. Nelson Professional Environmental Group/S.M. Stoller Corporation Rocky Flats Site 11025 Dover Street, Suite 1000 Westminster, CO 80021 ABSTRACT At the U.S. Department of Energy's (DOE's) Rocky Flats Site (Site), a former nuclear weapons component manufacturing plant near Golden, Colorado, approximately 650 acres were revegetated as part of the cleanup and closure activities. Numerous issues and challenges were addressed during the revegetation activities at the Site. These included deciding on revegetation and restoration goals; addressing poor substrate issues and soil compaction problems; use of soil amendments and topsoil; seed selection issues; timing and location of revegetation projects

43

Chestnut Flats Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Chestnut Flats Wind Farm Chestnut Flats Wind Farm Jump to: navigation, search Name Chestnut Flats Wind Farm Facility Chestnut Flats Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner EnXco Developer Gamesa Energy Energy Purchaser Delmarva Power Location Logan Township PA Coordinates 40.357314°, -78.594482° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.357314,"lon":-78.594482,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

44

NPP Boreal Forest: Canal Flats, Canada  

NLE Websites -- All DOE Office Websites (Extended Search)

Canal Flats, Canada, 1984 Canal Flats, Canada, 1984 Data Citation Cite this data set as follows: Comeau, P. G., and J. P. Kimmins. 1999. NPP Boreal Forest: Canal Flats, Canada, 1984. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Above and below-ground biomass and productivity of four lodgepole pine stands (Pinus contorta var. latifolia) were determined near Canal Flats, Canada, during the 1984 growing season. Two stands growing on xeric sites and two stands growing on mesic sites were studied to determine the influence of soil water content on resource allocation to above-ground versus below-ground plant components. The stands were 70-78 years old, unmanaged, and had regenerated naturally following wildfire.

45

Caithness Shepherds Flat | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

nearly 1.4 million operating hours. By supporting initiatives like the Shepherds Flat Project, the Department of Energy is fighting climate change, while encouraging the U.S....

46

Rocky Flats resumes shipments to WIPP  

NLE Websites -- All DOE Office Websites (Extended Search)

Rocky Flats Resumes Shipments to WIPP CARLSBAD, N.M., March 11, 2000 - The U.S. Department of Energy (DOE) has resumed transuranic radioactive waste shipments from DOE's Rocky...

47

Rocky Flats Ash test procedure (sludge stabilization)  

SciTech Connect

Rocky Flats Ash items have been identified as the next set of materials to be stabilized. This test is being run to determine charge sizes and soak times to completely stabilize the Rocky Flats Ash items. The information gathered will be used to generate the heating rampup cycle for stabilization. The test will provide information to determine charge sizes, soak times and mesh screen sizes (if available at time of test) for stabilization of Rocky Flats Ash items to be processed in the HC-21C Muffle Furnace Process. Once the charge size and soak times have been established, a program for the temperature controller of the HC-21C Muffle Furnace process will be generated for processing Rocky Flats Ash.

Funston, G.A.

1995-06-14T23:59:59.000Z

48

Shepherds Flat Central | Open Energy Information  

Open Energy Info (EERE)

Shepherds Flat Central Shepherds Flat Central Jump to: navigation, search Name Shepherds Flat Central Facility Shepherds Flat Central Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Caithness Developer Caithness Energy Purchaser Southern California Edison Co Location Gilliam and Morrow Counties OR Coordinates 45.655°, -120.056° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.655,"lon":-120.056,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

49

Flat Ridge 2 Expansion | Open Energy Information  

Open Energy Info (EERE)

Flat Ridge 2 Expansion Flat Ridge 2 Expansion Jump to: navigation, search Name Flat Ridge 2 Expansion Facility Flat Ridge 2 Expansion Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner BP Wind Energy Developer BP Wind Energy Energy Purchaser Arkansas Electric Cooperative Corp Location Sharon KS Coordinates 37.383239°, -98.334088° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.383239,"lon":-98.334088,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

50

Flat panel ferroelectric electron emission display system  

DOE Patents (OSTI)

A device which can produce a bright, raster scanned or non-raster scanned image from a flat panel. Unlike many flat panel technologies, this device does not require ambient light or auxiliary illumination for viewing the image. Rather, this device relies on electrons emitted from a ferroelectric emitter impinging on a phosphor. This device takes advantage of a new electron emitter technology which emits electrons with significant kinetic energy and beam current density.

Sampayan, Stephen E. (Manteca, CA); Orvis, William J. (Livermore, CA); Caporaso, George J. (Livermore, CA); Wieskamp, Ted F. (Livermore, CA)

1996-01-01T23:59:59.000Z

51

Neptunium processing at the Rocky Flats Plant  

SciTech Connect

Small quantities of neptunium-237 have been processed at the Rocky Flats Plant since 1962. This processing has involved preparation of pure neptunium oxide, metal, and metal alloys, and the recovery of neptunium-237 from a variety of residues. This report describes the processes used at Rocky Flats to recover and purify neptunium in addition to processes used for conversion to metal for casting and for rolling.

Conner, W.V.; Baaso, D.L.

1981-09-20T23:59:59.000Z

52

Vascular Flora of the Rocky Flats Area, Jefferson County, Colorado...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Vascular Flora of the Rocky Flats Area, Jefferson County, Colorado, USA Vascular Flora of the Rocky Flats Area, Jefferson County, Colorado, USA August 2010 Jody K. Nelson Vascular...

53

LM Records Handling System (LMRHS01) - Rocky Flats Environmental...  

Office of Environmental Management (EM)

LM Records Handling System (LMRHS01) - Rocky Flats Environmental Records Database, Office of Legacy Management LM Records Handling System (LMRHS01) - Rocky Flats Environmental...

54

Geothermometry At Gabbs Alkali Flat Area (Kratt, Et Al., 2008...  

Open Energy Info (EERE)

Alkali Flat Area (Kratt, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermometry At Gabbs Alkali Flat Area (Kratt, Et Al.,...

55

Rocky Flats Environmental Technology Site Archived Soil & Groundwater...  

Office of Environmental Management (EM)

Rocky Flats Environmental Technology Site Archived Soil & Groundwater Master Reports Rocky Flats Environmental Technology Site Archived Soil & Groundwater Master Reports Rocky...

56

Independent Oversight Special Review, Rocky Flats Closure Project...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Independent Oversight Special Review, Rocky Flats Closure Project Site - April 2001 Independent Oversight Special Review, Rocky Flats Closure Project Site - April 2001 April 2001...

57

Review of Beryllium Management Practices at Rocky Flats During...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Beryllium Management Practices at Rocky Flats During Closure Operations Review of Beryllium Management Practices at Rocky Flats During Closure Operations Administrative and...

58

Preliminary Notice of Violation , Rocky Flats Environmental Technology...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Violation , Rocky Flats Environmental Technology Site - EA-96-05 Preliminary Notice of Violation , Rocky Flats Environmental Technology Site - EA-96-05 October 7, 1996 Preliminary...

59

Landfill Cover Revegetation at the Rocky Flats Environmental...  

Energy Savers (EERE)

Landfill Cover Revegetation at the Rocky Flats Environmental Technology Site Landfill Cover Revegetation at the Rocky Flats Environmental Technology Site Landfill Cover...

60

Flat Water Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Flat Water Wind Farm Flat Water Wind Farm Jump to: navigation, search Name Flat Water Wind Farm Facility Flat Water Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Gestamp Wind North America Developer Flat Water Wind Farm Energy Purchaser Omaha Public Power District Location Richardson County NE Coordinates 40.001077°, -95.955119° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.001077,"lon":-95.955119,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Rocky Flats Compliance Program; Technology summary  

SciTech Connect

The Department of Energy (DOE) established the Office of Technology Development (EM-50) (OTD) as an element of Environmental Restoration and Waste Management (EM) in November 1989. The primary objective of the Office of Technology Development, Rocky Flats Compliance Program (RFCP), is to develop altemative treatment technologies for mixed low-level waste (wastes containing both hazardous and radioactive components) to use in bringing the Rocky Flats Plant (RFP) into compliance with Federal and state regulations and agreements. Approximately 48,000 cubic feet of untreated low-level mixed waste, for which treatment has not been specified, are stored at the RFP. The cleanup of the Rocky Flats site is driven by agreements between DOE, the Environmental Protection Agency (EPA), and the Colorado Department of Health (CDH). Under these agreements, a Comprehensive Treatment and Management Plan (CTMP) was drafted to outline the mechanisms by which RFP will achieve compliance with the regulations and agreements. This document describes DOE`s strategy to treat low-level mixed waste to meet Land Disposal Restrictions and sets specific milestones related to the regulatory aspects of technology development. These milestones detail schedules for the development of technologies to treat all of the mixed wastes at the RFP. Under the Federal Facilities Compliance Act (FFCA), the CTMP has been incorporated into Rocky Flats Plant Conceptual Site Treatment Plan (CSTP). The CSTP will become the Rocky Flats Plant site Treatment Plan in 1995 and will supersede the CTMP.

NONE

1994-02-01T23:59:59.000Z

62

Flat Ridge 2 | Open Energy Information  

Open Energy Info (EERE)

Flat Ridge 2 Flat Ridge 2 Facility Flat Ridge 2 Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner BP Wind Energy / Sempra Energy Developer BP Wind Energy Energy Purchaser Associated Electric Cooperative Inc / Southwestern Electric Power Location Nashville KS Coordinates 37.367868°, -98.240757° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.367868,"lon":-98.240757,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

63

Solid waste recycling programs at Rocky Flats  

SciTech Connect

The Rocky Flats (RFP) recycling programs for solid waste materials have been in place for over ten years. Within the last three years, the programs were centralized under the direction of the Rocky Flats Waste Minimization department, with the assistance of various plant organizations (e.g., Trucking, Building Services, Regulated Waste Operations, property Utilization and Disposal and Security). Waste Minimization designs collection and transportation systems for recyclable materials and evaluates recycling markets for opportunities to add new commodities to the existing programs. The Waste Minimization department also promotes employee participation in the Rocky Flats Recycling Programs, and collects all recycling data for publication. A description of the program status as of January 1994 is given.

Millette, R.L.; Blackman, T.E.; Shepard, M.D. [EG and G Rocky Flats, Inc., Golden, CO (United States)

1994-12-31T23:59:59.000Z

64

BOOMERanG Analysis Finds Flat Universe  

NLE Websites -- All DOE Office Websites (Extended Search)

BOOMERanG Analysis BOOMERanG Analysis Finds Flat Universe BOOMERanG Analysis Finds Flat Universe NERSC's Mcurie System Helps Uncover Evidence of 'Cosmological Constant' Proposed, Rejected by Einstien December 12, 1999 Newly released data from the 1997 North American test flight of BOOMERanG, which mapped anisotropies in the cosmic microwave background radiation (CMB) in a narrow strip of sky, show a pronounced peak in the CMB "power spectrum" at an angular scale of about one degree, strong evidence that the universe is flat. Analyzed at the Department of Energy's National Energy Research Scientific Computing Center (NERSC) at Lawrence Berkeley National Laboratory, the new data also suggest the existence of a cosmological constant, a form of countergravitational "dark energy" thought to fill the universe.

65

Stability of Flat Space to Singular Instantons  

E-Print Network (OSTI)

Hawking and the author have proposed a class of singular, finite action instantons for defining the initial conditions for inflation. Vilenkin has argued they are unacceptable. He exhibited an analogous class of asymptotically flat instantons which on the face of it lead to an instability of Minkowski space. However, all these instantons must be defined by introducing a constraint into the path integral, which is then integrated over. I show that with a careful definition these instantons do not possess a negative mode. Infinite flat space is therefore stable against decay via singular instantons.

Neil Turok

1999-01-27T23:59:59.000Z

66

Taming Past LTL and Flat Counter Systems  

E-Print Network (OSTI)

Reachability and LTL model-checking problems for flat counter systems are known to be decidable but whereas the reachability problem can be shown in NP, the best known complexity upper bound for the latter problem is made of a tower of several exponentials. Herein, we show that the problem is only NP-complete even if LTL admits past-time operators and arithmetical constraints on counters. Actually, the NP upper bound is shown by adequately combining a new stuttering theorem for Past LTL and the property of small integer solutions for quantifier-free Presburger formulae. Other complexity results are proved, for instance for restricted classes of flat counter systems.

Demri, Stéphane; sangnier, Arnaud

2012-01-01T23:59:59.000Z

67

Issues evaluation process at Rocky Flats Plant  

SciTech Connect

This report describes the issues evaluation process for Rocky Flats Plant as established in July 1990. The issues evaluation process was initiated February 27, 1990 with a Charter and Process Overview for short-term implementation. The purpose of the process was to determine the projects required for completion before the Phased Resumption of Plutonium Operations. To determine which projects were required, the issues evaluation process and emphasized risk mitigation, based on a ranking system. The purpose of this report is to document the early design of the issues evaluation process to record the methodologies used that continue as the basis for the ongoing Issues Management Program at Rocky Flats Plant.

Smith, L.C.

1992-04-16T23:59:59.000Z

68

Chemical tracking at the Rocky Flats Plant  

SciTech Connect

EG&G Rocky Flats, Inc., has developed a chemical tracking system to support compliance with the Emergency Planning and community Right-to-Know Act (EPCRA) at the Rocky Flats Plant. This system, referred to as the EPCRA Chemical Control system (ECCS), uses bar code technology to uniquely identify and track the receipt, distribution, and use of chemicals. Chemical inventories are conducted using hand-held electronic scanners to update a site wide chemical database on a VAX 6000 computer. Information from the ECCS supports preparation of the EPCRA Tier II and Form R reports on chemical storage and use.

Costain, D.B.

1994-04-01T23:59:59.000Z

69

Flat Ridge Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Flat Ridge Wind Farm Flat Ridge Wind Farm Jump to: navigation, search Name Flat Ridge Wind Farm Facility Flat Ridge Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner BP Wind Energy North America/Weststar Energy Developer BP Wind Energy North America Energy Purchaser Weststar Energy Location Barber County KS Coordinates 37.3694801°, -98.4603352° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.3694801,"lon":-98.4603352,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

70

Neal Lane: Science in a Flat World  

SciTech Connect

Lane discusses the changes that have taken place in the world since World War II that have made it "flatter," referring to Thomas L. Friedman's book, The World is Flat. Friedman's main premise is that inexpensive telecommunications is bringing about unhampered international competition, the demise of economic stability, and a trend toward outsourcing services, such as computer programming, engineering and science research.

Neal Lane

2006-09-12T23:59:59.000Z

71

Remediation of the Maxey Flats Site  

SciTech Connect

This report describes issues associated with remedial action of Maxey Flats, a low-level radioactive waste disposal site from 1963-1977, located in Fleming County, Kentucky. Present remedial action alternatives being considered are discussed along with emergency plans, ground water monitoring plans, and budgets.

Not Available

1990-01-12T23:59:59.000Z

72

GROUPS SENSITIVITY SCORE Flat worms 3  

E-Print Network (OSTI)

GROUPS SENSITIVITY SCORE Flat worms 3 Worms 3 Leeches 2 Crabs or shrimps 7 Stoneflies 14 Minnow The best sites are those with rocks in moving water. Not all sites have rocks (rocky type rivers), but may rocky, sandy, and vegetation habitats, not all habitats are always present at a site. If your river does

de Villiers, Marienne

73

Neal Lane: Science in a Flat World  

ScienceCinema (OSTI)

Lane discusses the changes that have taken place in the world since World War II that have made it "flatter," referring to Thomas L. Friedman's book, The World is Flat. Friedman's main premise is that inexpensive telecommunications is bringing about unhampered international competition, the demise of economic stability, and a trend toward outsourcing services, such as computer programming, engineering and science research.

Neal Lane

2010-09-01T23:59:59.000Z

74

Windy Flats Phase III | Open Energy Information  

Open Energy Info (EERE)

Phase III Phase III Jump to: navigation, search Name Windy Flats Phase III Facility Windy Flats Phase III Sector Wind energy Facility Type Commercial Scale Wind Facility Status Proposed Owner Cannon Power Group Developer Cannon Power Group Location Goldendale WA Coordinates 45.76201437°, -120.5455971° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.76201437,"lon":-120.5455971,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

75

Windy Flats IIa extension | Open Energy Information  

Open Energy Info (EERE)

IIa extension IIa extension Jump to: navigation, search Name Windy Flats IIa extension Facility Windy Flats IIa extension Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Cannon Power Group Developer Cannon Power Group Location North shore of Columbia River Coordinates 45.699622°, -120.774622° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.699622,"lon":-120.774622,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

76

Shepherds Flat North | Open Energy Information  

Open Energy Info (EERE)

North North Jump to: navigation, search Name Shepherds Flat North Facility Shepherds Flat North Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Caithness Developer Caithness Energy Purchaser Southern California Edison Co Location Gilliam County OR Coordinates 45.73°, -120.056° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.73,"lon":-120.056,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

77

Release fractions for Rocky Flats specific accidents  

SciTech Connect

As Rocky Flats and other DOE facilities begin the transition process towards decommissioning, the nature of the scenarios to be studied in safety analysis will change. Whereas the previous emphasis in safety accidents related to production, now the emphasis is shifting to accidents related tc decommissioning and waste management. Accident scenarios of concern at Rocky Flats now include situations of a different nature and different scale than are represented by most of the existing experimental accident data. This presentation will discuss approaches@to use for applying the existing body of release fraction data to this new emphasis. Mention will also be made of ongoing efforts to produce new data and improve the understanding of physical mechanisms involved.

Weiss, R.C.

1992-09-01T23:59:59.000Z

78

Release fractions for Rocky Flats specific accidents  

SciTech Connect

As Rocky Flats and other DOE facilities begin the transition process towards decommissioning, the nature of the scenarios to be studied in safety analysis will change. Whereas the previous emphasis in safety accidents related to production, now the emphasis is shifting to accidents related tc decommissioning and waste management. Accident scenarios of concern at Rocky Flats now include situations of a different nature and different scale than are represented by most of the existing experimental accident data. This presentation will discuss approaches to use for applying the existing body of release fraction data to this new emphasis. Mention will also be made of ongoing efforts to produce new data and improve the understanding of physical mechanisms involved.

Weiss, R.C.

1992-01-01T23:59:59.000Z

79

Shepherds Flat South | Open Energy Information  

Open Energy Info (EERE)

South South Jump to: navigation, search Name Shepherds Flat South Facility Shepherds Flat South Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Caithness Developer Caithness Energy Purchaser Southern California Edison Co Location Ione OR Coordinates 45.655°, -120.056° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.655,"lon":-120.056,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

80

Basic TRUEX process for Rocky Flats Plant  

SciTech Connect

The Generic TRUEX Model was used to develop a TRUEX process flowsheet for recovering the transuranics (Pu, Am) from a nitrate waste stream at Rocky Flats Plant. The process was designed so that it is relatively insensitive to changes in process feed concentrations and flow rates. Related issues are considered, including solvent losses, feed analysis requirements, safety, and interaction with an evaporator system for nitric acid recycle.

Leonard, R.A.; Chamberlain, D.B.; Dow, J.A.; Farley, S.E.; Nunez, L.; Regalbuto, M.C.; Vandegrift, G.F.

1994-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Status Update: Closing Rocky Flats by 2006  

SciTech Connect

Safely closing Rocky Flats by December 2006 is a goal shared by many: the State of Colorado, the communities surrounding the site, the U.S. Congress, the Department of Energy (DOE), Kaiser-Hill and its team of subcontractors, the site's employees and taxpayers across the country. This paper will: provide a status of the Closure Project to date; describe important accomplishments of the past year; describe some of the closure-enhancing technologies enabling acceleration; and discuss the remaining challenges ahead.

Tuor, N.; Schubert, A.

2003-02-25T23:59:59.000Z

82

Microwave solidification development for Rocky Flats waste  

SciTech Connect

The Microwave Engineering Team at the Rocky Flats Plant has developed a production-scale system for the treatment of hazardous, radioactive, and mixed wastes using microwave energy. The system produces a vitreous final form which meets the acceptance criteria for shipment and disposal. The technology also has potential for application on various other waste streams from the public and private sectors. Technology transfer opportunities are being identified and pursued for commercialization of the microwave solidification technology.

Dixon, D.; Erle, R.; Eschen, V. [and others

1994-04-01T23:59:59.000Z

83

SunShot Initiative: Innovative Ballasted Flat Roof Solar Photovoltaic  

NLE Websites -- All DOE Office Websites (Extended Search)

Innovative Ballasted Flat Roof Innovative Ballasted Flat Roof Solar Photovoltaic Racking System to someone by E-mail Share SunShot Initiative: Innovative Ballasted Flat Roof Solar Photovoltaic Racking System on Facebook Tweet about SunShot Initiative: Innovative Ballasted Flat Roof Solar Photovoltaic Racking System on Twitter Bookmark SunShot Initiative: Innovative Ballasted Flat Roof Solar Photovoltaic Racking System on Google Bookmark SunShot Initiative: Innovative Ballasted Flat Roof Solar Photovoltaic Racking System on Delicious Rank SunShot Initiative: Innovative Ballasted Flat Roof Solar Photovoltaic Racking System on Digg Find More places to share SunShot Initiative: Innovative Ballasted Flat Roof Solar Photovoltaic Racking System on AddThis.com... Concentrating Solar Power Photovoltaics

84

DOE - Office of Legacy Management -- Rocky Flats Regulatory Documents  

NLE Websites -- All DOE Office Websites (Extended Search)

Regulatory Documents Regulatory Documents Rocky Flats Site, Colorado Regulatory Documents All documents are Adobe Acrobat files. pdf_icon Notification that GS01 is no longer an RFLMA Point of Compliance (POC) Third Five-Year Review Report for the Rocky Flats Site Rocky Flats Legacy Management Agreement Environmental Covenant, November 14, 2011 Corrective Action Decision/Record of Decision Amendment for Rocky Flats Plant (USDOE) Central Operable Unit Proposed Plan for the Rocky Flats CAD/ROD Amendment (June 2011) Second Five-Year Review Report for the Rocky Flats Site Corrective Action Decision/Record of Decision for Rocky Flats Plant (USDOE) Peripheral Operable Unit and Central Operable Unit Rocky Flats Environmental Technology Site Proposed Plan Present Landfill Monitoring and Maintenance Plan

85

SLIDESHOW: Shepherds Flat Wind Farm | Department of Energy  

Energy Savers (EERE)

SLIDESHOW: Shepherds Flat Wind Farm SLIDESHOW: Shepherds Flat Wind Farm Addthis 1 of 5 Image: Caithness Energy 2 of 5 Image: Caithness Energy 3 of 5 Image: Caithness Energy 4 of 5...

86

Development of the NIST Rocky Flats Soil Standard  

Science Journals Connector (OSTI)

The National Institute of Standards and Technology (NIST) Rocky Flats Soil-II Standard reference material (SRM) ... values and uncertainties for the radionuclides in the Rocky Flats Soil II SRM.

S. Nour; K. Inn; J. Filliben

2008-07-01T23:59:59.000Z

87

Geothermal: Sponsored by OSTI -- Telephone Flat Geothermal Development...  

Office of Scientific and Technical Information (OSTI)

Telephone Flat Geothermal Development Project Environmental Impact Statement Environmental Impact Report. Final: Comments and Responses to Comments Geothermal Technologies Legacy...

88

NATURAL HERITAGE RESOURCES OF THE ROCKY FLATS ENVIRONMENTAL TECHNOLOGY SITE  

E-Print Network (OSTI)

NATURAL HERITAGE RESOURCES OF THE ROCKY FLATS ENVIRONMENTAL TECHNOLOGY SITE AND THEIR CONSERVATION Methods 3 Rocky Flats Conservation Site Description 10 Walnut Creek Conservation Site Description 22 Rocky.S. Department of Energy's Rocky Flats Field Office for making this report possible. In particular, Dr. John

89

Converting Nested Algebra Expressions into Flat Algebra Expressions  

E-Print Network (OSTI)

Converting Nested Algebra Expressions into Flat Algebra Expressions JAN PAREDAENS University of Antwerp and DIRK VAN GUCHT Indiana University Nested relations generalize ordinary flat relations by allowing tuple values to be either atomic or set valued. The nested algebra is a generalization of the flat

Van Gucht, Dirk

90

Introduction Flattening the Earth Continuation procedure Flat Earth Numerical simulations Continuation from a flat to a round Earth model  

E-Print Network (OSTI)

Introduction Flattening the Earth Continuation procedure Flat Earth Numerical simulations Continuation from a flat to a round Earth model in the coplanar orbit transfer problem M. Cerf1, T. Haberkorn, SADCO 2011, March 2nd M. Cerf, T. Haberkorn, E. Tr´elat Continuation from a flat to a round Earth model

Boyer, Edmond

91

DOE - Office of Legacy Management -- Rocky Flats SOG  

NLE Websites -- All DOE Office Websites (Extended Search)

SOG SOG Rocky Flats Site, Colorado Rocky Flats, Colorado, Site Operations Guide All documents are Adobe Acrobat files. pdf_icon Site Operations Guide Appendixes Appendix A: Annual Site Inspection Checklist Appendix B: Example Contact Record Appendix C: Rocky Flats Site Soil Disturbance Evaluation Procedure Appendix D: Site-Specific Checklist Appendix E: Rocky Flats, Colorado, Site Erosion Control Monitoring and Maintenance Inspection Procedure Appendix F: Erosion Control Plan for Rocky Flats Property Central Operable Unit Appendix G: Wildland Fire Management Plan for the Rocky Flats, Colorado, Site Appendix H: Emergency Response Plan for the Rocky Flats Site Dams Appendix I: Additional Field Implementation Detail for Selected Monitoring Objectives Historic documents may contain links to outside sources. LM cannot attest

92

Independent Oversight Special Review, Rocky Flats Closure Project Site -  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Oversight Special Review, Rocky Flats Closure Project Oversight Special Review, Rocky Flats Closure Project Site - April 2001 Independent Oversight Special Review, Rocky Flats Closure Project Site - April 2001 April 2001 Special Review of the Rocky Flats Closure Project Site The U.S. Department of Energy (DOE) Office of Independent Environment, Safety, and Health Oversight (EH-2), within the Office of Environment, Safety and Health, conducted an independent oversight Special Review at the Rocky Flats Closure Project (RFCP). The Special Review was conducted at the request of the Rocky Flats Field Office (RFFO), which is the DOE organizational element with responsibility for the RFCP (formerly known as the Rocky Flats Environmental Technology Site). Kaiser-Hill Company, LLC (KH) is the prime contractor for the RFCP.

93

Independent Oversight Special Review, Rocky Flats Closure Project Site -  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Special Review, Rocky Flats Closure Project Special Review, Rocky Flats Closure Project Site - April 2001 Independent Oversight Special Review, Rocky Flats Closure Project Site - April 2001 April 2001 Special Review of the Rocky Flats Closure Project Site The U.S. Department of Energy (DOE) Office of Independent Environment, Safety, and Health Oversight (EH-2), within the Office of Environment, Safety and Health, conducted an independent oversight Special Review at the Rocky Flats Closure Project (RFCP). The Special Review was conducted at the request of the Rocky Flats Field Office (RFFO), which is the DOE organizational element with responsibility for the RFCP (formerly known as the Rocky Flats Environmental Technology Site). Kaiser-Hill Company, LLC (KH) is the prime contractor for the RFCP. RFCP's project-oriented approach and aggressive scheduling have resulted

94

Cosmic string scaling in flat space  

Science Journals Connector (OSTI)

We investigate the evolution of infinite strings as a part of a complete cosmic string network in flat space. We perform a simulation of the network which uses functional forms for the string position and thus is exact to the limits of computer arithmetic. Our results confirm that the wiggles on the strings obey a scaling law described by universal power spectrum. The average distance between long strings also scales accurately with the time. These results suggest that small-scale structure will also scale in an expanding universe, even in the absence of gravitational damping.

Vitaly Vanchurin; Ken Olum; Alexander Vilenkin

2005-09-29T23:59:59.000Z

95

Repackaging Rocky Flats Legacy Transuranic Waste  

SciTech Connect

Repackaging legacy Transuranic (TRU), Transuranic Mixed (TRM), Low Level Waste (LLW), and Low Level Mixed (LLM) waste requires good characterization skills and the ability to adapt to less than ideal conditions. Repackaging legacy waste in a facility that is not undergoing Decontamination and Decommission (D and D) is optimum. However, repackaging any waste in a D and D facility, under cold and dark conditions, can be difficult. Cold and dark conditions are when the heating and air conditioning are no longer in service and the lighting consists of strands of lights hung throughout each of the rooms. Working under these conditions adds an additional level of stress and danger that must be addressed. The use of glovebags was very useful at Rocky Flats during the D and D of many buildings. Glovebags can be adapted for many different types of wastes and unusual conditions. Repackaging of legacy TRU waste, in a D and D facility, can be accomplished safely and cost effectively with the use of glovebags. In conclusion: the use of glovebags to repackage legacy TRU, TRM, LLW, or LLM waste was done safely and cost effectively at Rocky Flats. The cost of using glovebags was minimal. Glovebags are easily adaptable to whatever the waste configuration is. The use of glovebags, for repackaging of Legacy waste, allows D and D efforts to stay on schedule and on task. Without the use of glovebags, additional gloveboxes would have been required at Rocky Flats. Larger items, such as the HEPA filters, would have required the construction of a new large item repackaging glovebox. Repackaging in glovebags allows the freedom to either locate the glovebag by the waste or locate the glovebag in a place that least impacts D and D efforts. The use of glovebags allowed numerous configurations of waste to be repackaged without the use of gloveboxes. During the D and D of the Rocky Flats facility, which was in a cold and dark stage, D and D work was not impacted by the repackaging activity. Glovebags work well in facilities that are in the process of D and D or still in full operations because glovebags are very safe and cost effective.

McTaggart, Jerri Lynne [Los Alamos National Laboratory, 115 N. Main St., Carlsbad, New Mexico, 88220 (United States)

2008-01-15T23:59:59.000Z

96

Disposal of Rocky Flats residues as waste  

SciTech Connect

Work is underway at the Rocky Flats Plant to evaluate alternatives for the removal of a large inventory of plutonium-contaminated residues from the plant. One alternative under consideration is to package the residues as transuranic wastes for ultimate shipment to the Waste Isolation Pilot Plant. Current waste acceptance criteria and transportation regulations require that approximately 1000 cubic yards of residues be repackaged to produce over 20,000 cubic yards of WIPP certified waste. The major regulatory drivers leading to this increase in waste volume are the fissile gram equivalent, surface radiation dose rate, and thermal power limits. In the interest of waste minimization, analyses have been conducted to determine, for each residue type, the controlling criterion leading to the volume increase, the impact of relaxing that criterion on subsequent waste volume, and the means by which rules changes may be implemented. The results of this study have identified the most appropriate changes to be proposed in regulatory requirements in order to minimize the costs of disposing of Rocky Flats residues as transuranic wastes.

Dustin, D.F.; Sendelweck, V.S. [EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant; Rivera, M.A. [Lamb Associates, Inc., Rockville, MD (United States)

1993-03-01T23:59:59.000Z

97

Disposal of Rocky Flats residues as waste  

SciTech Connect

Work is underway at the Rocky Flats Plant to evaluate alternatives for the removal of a large inventory of plutonium-contaminated residues from the plant. One alternative under consideration is to package the residues as transuranic wastes for ultimate shipment to the Waste Isolation Pilot Plant. Current waste acceptance criteria and transportation regulations require that approximately 1000 cubic yards of residues be repackaged to produce over 20,000 cubic yards of WIPP certified waste. The major regulatory drivers leading to this increase in waste volume are the fissile gram equivalent, surface radiation dose rate, and thermal power limits. In the interest of waste minimization, analyses have been conducted to determine, for each residue type, the controlling criterion leading to the volume increase, the impact of relaxing that criterion on subsequent waste volume, and the means by which rules changes may be implemented. The results of this study have identified the most appropriate changes to be proposed in regulatory requirements in order to minimize the costs of disposing of Rocky Flats residues as transuranic wastes.

Dustin, D.F.; Sendelweck, V.S. (EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant); Rivera, M.A. (Lamb Associates, Inc., Rockville, MD (United States))

1993-01-01T23:59:59.000Z

98

Ghost condensate model of flat rotation curves  

E-Print Network (OSTI)

An effective action of ghost condensate with higher derivatives creates a source of gravity and mimics a dark matter in spiral galaxies. We present a spherically symmetric static solution of Einstein--Hilbert equations with the ghost condensate at large distances, where flat rotation curves are reproduced in leading order over small ratio of two energy scales characterizing constant temporal and spatial derivatives of ghost field: $\\mu_*^2$ and $\\mu_\\star^2$, respectively, with a hierarchy $\\mu_\\star\\ll \\mu_*$. We assume that a mechanism of hierarchy is provided by a global monopole in the center of galaxy. An estimate based on the solution and observed velocities of rotations in the asymptotic region of flatness, gives $\\mu_*\\sim 10^{19}$ GeV and the monopole scale in a GUT range $\\mu_\\star\\sim 10^{16}$ GeV, while a velocity of rotation $v_0$ is determined by the ratio: $ \\sqrt{2} v_0^2= \\mu_\\star^2/\\mu_*^2$. A critical acceleration is introduced and naturally evaluated of the order of Hubble rate, that represents the Milgrom's acceleration.

V. V. Kiselev

2005-07-29T23:59:59.000Z

99

Immobilization of Rocky Flats Graphite Fines Residues  

SciTech Connect

The Savannah River Technology Center (SRTC) is developing an immobilization process for graphite fines residues generated during nuclear materials production activities at the Rocky Flats Environmental Technology Site (Rocky Flats). The continued storage of this material has been identified as an item of concern. The residue was generated during the cleaning of graphite casting molds and potentially contains reactive plutonium metal. The average residue composition is 73 wt percent graphite, 15 wt percent calcium fluoride (CaF2), and 12 wt percent plutonium oxide (PuO2). Approximately 950 kilograms of this material are currently stored at Rocky Flats. The strategy of the immobilization process is to microencapsulate the residue by mixing with a sodium borosilicate (NBS) glass frit and heating at nominally 700 degrees C. The resulting waste form would be sent to the Waste Isolation Pilot Plant (WIPP) for disposal. Since the PuO2 concentration in the residue averages 12 wt percent, the immobilization process was required to meet the intent of safeguards termination criteria by limiting plutonium recoverability based on a test developed by Rocky Flats. The test required a plutonium recovery of less than 4 g/kg of waste form when a sample was leached using a nitric acid/CaF2 dissolution flowsheet. Immobilization experiments were performed using simulated graphite fines with cerium oxide (CeO2) as a surrogate for PuO2 and with actual graphite fines residues. Small-scale surrogate experiments demonstrated that a 4:1 frit to residue ratio was adequate to prevent recovery of greater than 4 g/kg of cerium from simulated waste forms. Additional experiments investigated the impact of varying concentrations of CaF2 and the temperature/heating time cycle on the cerium recovery. Optimal processing conditions developed during these experiments were subsequently demonstrated at full-scale with surrogate materials and on a smaller scale using actual graphite fines.In general, the recovery of cerium from the full-scale waste forms was higher than for smaller scale experiments. The presence of CaF2 also caused a dramatic increase in cerium recovery not seen in the small-scale experiments. However, the results from experiments with actual graphite fines were encouraging. A 4:1 frit to residue ratio, a temperature of 700 degrees C, and a 2 hr heating time produced waste forms with plutonium recoveries of 4 plus/minus 1 g/kg. With an increase in the frit to residue ratio, waste forms fabricated at this scale should meet the Rocky Flats product specification. The scale-up of the waste form fabrication process to nominally 3 kg is expected to require a 5:1 to 6:1 frit to residue ratio and maintaining the waste form centerline temperature at 700 degrees C for 2 hr.

Rudisill, T. S.

1998-11-06T23:59:59.000Z

100

DOE's Former Rocky Flats Weapons Production Site to Become National  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Former Rocky Flats Weapons Production Site to Become National Former Rocky Flats Weapons Production Site to Become National Wildlife Refuge DOE's Former Rocky Flats Weapons Production Site to Become National Wildlife Refuge July 12, 2007 - 2:54pm Addthis WASHINGTON, DC - The U.S. Department of Energy (DOE) today announced the transfer of nearly 4,000 acres of its former Rocky Flats nuclear weapons production site to the Department of the Interior's (DOI) U.S. Fish and Wildlife Service (FWS) for use as a National Wildlife Refuge. After more than a decade of environmental cleanup work, the transfer creates the Rocky Flats National Wildlife Refuge, 16 miles northwest of Denver, Colorado, and marks completion of the regulatory milestones to transform a formerly contaminated site into an environmental asset. "The Department of Energy's environmental cleanup of the Rocky Flats

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101

Salt Wells, Eight Mile Flat | Open Energy Information  

Open Energy Info (EERE)

Salt Wells, Eight Mile Flat Salt Wells, Eight Mile Flat Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Salt Wells, Eight Mile Flat Abstract Abstract unavailable. Author Nevada Bureau of Mines and Geology Published Online Nevada Encyclopedia, 2009 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Salt Wells, Eight Mile Flat Citation Nevada Bureau of Mines and Geology. Salt Wells, Eight Mile Flat [Internet]. 2009. Online Nevada Encyclopedia. [updated 2009/03/24;cited 2013/08/07]. Available from: http://www.onlinenevada.org/articles/salt-wells-eight-mile-flat Related Geothermal Exploration Activities Activities (1) Areas (1) Regions (0) Development Wells At Salt Wells Area (Nevada Bureau of Mines and Geology, 2009) Salt Wells Geothermal Area

102

Flat-Plate Photovoltaic System Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Flat-Plate Photovoltaic System Basics Flat-Plate Photovoltaic System Basics Flat-Plate Photovoltaic System Basics August 20, 2013 - 4:03pm Addthis The most common photovoltaic (PV) array design uses flat-plate PV modules or panels. These panels can be fixed in place or allowed to track the movement of the Illustration of a cutaway of a typical flat-plate module. The layers, in order from top to bottom, are: cover film, solar cell, encapsulant, substrate, cover film, seal, gasket, and frame. One typical flat-plate module design uses a substrate of metal, glass, or plastic to provide structural support in the back; an encapsulant material to protect the cells; and a transparent cover of plastic or glass. sun. They respond to sunlight that is direct or diffuse. Even in clear skies, the diffuse component of sunlight accounts for between 10% and 20%

103

Sagebrush Flat Wildlife Area 2008 Annual Report.  

SciTech Connect

The Sagebrush Flat Wildlife Area is a 12,718 acre complex located in Douglas County, Washington. Four distinct management units make up the area: Bridgeport, Chester Butte, Dormaier and Sagebrush Flat. The four Units are located across a wide geographic area within Douglas County. The Units are situated roughly along a north/south line from Bridgeport in the north to the Douglas/Grant county line in the south, 60 miles away. The wildlife area was established to conserve and enhance shrubsteppe habitat for the benefit shrubsteppe obligate and dependent wildlife species. In particular, the Sagebrush Flat Wildlife Area is managed to promote the recovery of three state-listed species: Columbian sharp-tailed grouse (threatened), greater sage grouse (threatened) and the pygmy rabbit (endangered). The US Fish and Wildlife Service also list the pygmy rabbit as endangered. Wildlife area staff seeded 250 acres of old agricultural fields located on the Sagebrush Flat, Dormaier and Chester Butte units. This has been a three project to reestablish high quality shrubsteppe habitat on fields that had either been abandoned (Dormaier) or were dominated by non-native grasses. A mix of 17 native grasses and forbs, most of which were locally collected and grown, was used. First year maintenance included spot spraying Dalmatian toadflax on all sites and mowing annual weeds to reduce competition. Photo points were established and will be integral to long term monitoring and evaluation. Additional monitoring and evaluation will come from existing vegetation transects. This year weed control efforts included spot treatment of noxious weeds, particularly Dalmatian toadflax, in previously restored fields on the Bridgeport Unit (150 acres). Spot treatment also took place within fields scheduled for restoration (40 acres) and in areas where toadflax infestations are small and relatively easily contained. Where toadflax is so widespread that chemical treatment would be impractical, we use the bioagent Mecinus janthinus, available through Professor Gary Piper of Washington State University. This year we released 4,000 M. janthinus on the Bridgeport Unit at 6 separate locations. Since 2002 we have released approximately 14,400 of these insects, 80% of these on the Bridgeport Unit. Additional weed control activities included mowing and spot spraying more than 32 miles of roads, cutting and removal of annual weeds within fenced deer exclosures. We upgraded the solar powered irrigation system that supplies water to a stand of water birch trees planted in 2002. Wildlife area staff designed and built a new solar array and installed a higher capacity pump. The increased capacity will ensure that these trees receive adequate water through the hot summer months and allow us to create at least one additional stand. This project is an important part in our effort to expand the available winter habitat for sharp-tailed grouse on the Bridgeport Unit. Maintenance of fences, parking areas and roads continued during throughout the year. Two parking areas, at Chester Butte and Bridgeport, were graded and additional gravel added. Roads on the Bridgeport Unit were graded and repaired following spring runoff. Trespass and dumping issues have increased in recent years on the Bridgeport Unit. To address these problems we constructed four steel gates at access points on this unit. Each gate is tubular steel attached to 8-inch diameter steel posts, 10 feet long that are cemented into the ground. Two gates allow access to BPA substation facilities and power-line right-of ways so placement, construction and locking issues had to be coordinated with BPA's Real Estate staff in Spokane. Environmental Compliance Documentation issues were addressed again this year. This process has the potential to cause delays the completion of projects within the fiscal year. With this in mind and an eye toward the future, we requested that several projects planned for the coming years be surveyed this year. Beginning in August of 2007, area staff worked with BPA staff to identify work elements

Peterson, Dan [Washington Department of Fish and Wildlife

2008-11-03T23:59:59.000Z

104

Rocky Flats Closure Unit Cost Data  

SciTech Connect

The Rocky Flats Closure Project has completed the process of stabilizing residual nuclear materials, decommissioning nuclear facilities, remediating environmental media and closing the Rocky Flats Site (Site). The project cost approximately $4.1 B and included the decommissioning of over 700 structures including 5 major plutonium facilities and 5 major uranium facilities, shipping over 14,600 cubic meters of transuranic and 565,000 cubic meters of low level radioactive waste, and remediating a 385-acre industrial area and the surrounding land. Actual costs were collected for a large variety of closure activities. These costs can be correlated with metrics associated with the facilities and environmental media to capture cost factors from the project that could be applicable to a variety of other closure projects both within and outside of the Department of Energy's weapons complex. The paper covers four general topics: the process to correlate the actual costs and metrics, an example of the correlated data for one large sub-project, a discussion of the results, and the additional activities that are planned to correlate and make this data available to the public. The process to collect and arrange the project control data of the Closure Project relied on the actual Closure Project cost information. It was used to correlate these actual costs with the metrics for the physical work, such as building area or waste generated, to support the development of parametric cost factors. The example provides cost factors for the Industrial Sites Project. The discussion addresses the strengths and weaknesses of the data, followed by a section identifying future activities to improve and extend the analyses and integrate it within the Department's Environmental Cost Analysis System. (authors)

Sanford, P.C. [1129 Business Parkway South, Westminister, MD (United States); Skokan, B. [United States Department of Energy, Washington, DC (United States)

2007-07-01T23:59:59.000Z

105

3D Flat Holography: Entropy and Logarithmic Corrections  

E-Print Network (OSTI)

We compute the leading corrections to the Bekenstein-Hawking entropy of the Flat Space Cosmological (FSC) solutions in 3D flat spacetimes, which are the flat analogues of the BTZ black holes in AdS3. The analysis is done by a computation of density of states in the dual 2D Galilean Conformal Field Theory and the answer obtained by this matches with the limiting value of the expected result for the BTZ inner horizon entropy as well as what is expected for a generic thermodynamic system. Along the way, we also develop other aspects of holography of 3D flat spacetimes.

Arjun Bagchi; Rudranil Basu

2013-12-19T23:59:59.000Z

106

Digital Video Bandwidth Requirements for Large Flat-Panel Televisions  

Science Journals Connector (OSTI)

Consumer expectations for high quality high-definition programming will place greater demand on access networks as flat-panel display sizes increase. Herein, we investigate the...

Ruffin, A B

107

EIS-0276: Rocky Flats Plutonium Storage, Golden, Colorado  

Energy.gov (U.S. Department of Energy (DOE))

This EIS analyzes DOE's proposed action to provide safe interim storage of approximately 10 metric tons of plutonium at the Rocky Flats Environmental Technology Site (RFETS).

108

2006 Annual Ecology Report for the Rocky Flats Site  

Office of Legacy Management (LM)

Ecology Report for the Rocky Flats Site Click on the links below to access different portions of the electronic annual report. 2006 Annual Report Sections Diffuse Knapweed...

109

Unique process combination decontaminates mixed wastewater at Rocky Flats  

SciTech Connect

This paper describes the Sitewide Water Treatment Facility (SWTF) used to process environmental remediation wastewaters found at the Rocky Flats Environmental Technology Site.

Kelso, William J.; Cirillo, J. Russ

1999-08-01T23:59:59.000Z

110

Rocky Flats, Colorado, Site Quarterly Report of Site Surveillance...  

Office of Legacy Management (LM)

Site. LM provides periodic communications through several means, such as this report, web-based tools, and public meetings. LM prepared the Rocky Flats, Colorado, Site Site...

111

Rocky Flats, Colorado, Site Quarterly Report of Site Surveillance  

Office of Legacy Management (LM)

Site. LM provides periodic communications through several means, such as this report, web-based tools, and public meetings. LM prepared the Rocky Flats, Colorado, Site Site...

112

Project plan: Procedure system design for the Rocky Flats Plant Emergency Preparedness Program  

SciTech Connect

This procedure system is being designed for the Rocky Flats Plant Emergency Preparedness Program (EPP) to: assess the procedural needs of the Emergency Preparedness Program in light of the existing Rocky Flats Plant policies, plans, procedures, and applicable DOE orders; design the structure of the Emergency Preparedness Program procedural system based on the classes of procedures needed, the types of procedures (procedures vs job outline), the sections of procedures required, and the timetable for procedure maintenance; develop boiler plate formats for the various authors in writing the necessary standardized procedures; develop a list of all the necessary procedures that must be produced for Emergency Preparedness Program; and provide consistency for department-wide activities relating to the quality control in writing, distribution, and revising procedures for Emergency Preparedness Program. 23 refs., 18 figs.

Hodgin, C.R.; Brown-Strattan, M.

1989-10-01T23:59:59.000Z

113

Optimization of solar flat collector inclination  

Science Journals Connector (OSTI)

Solar collectors need to be inclined at the optimum angle to maximize the receiving energy. In spite of many theoretical and experimental investigations on optimization of solar collector inclination, there is an inconsistency in presented results. In this paper, solar global radiation on a horizontal surface was estimated using a mathematical model and the results were compared with the recorded data from the Zahedan city meteorological station. Total received solar energy by a flat inclined collector was determined in a certain day, and searching for the angle which has the maximum incident energy was the general procedure in determination of daily optimum tilt angle. In case of operational limitation for daily tilt adjustment, this procedure is repeated for other specific period of time and monthly, seasonal, semi-annual and annual optimum tilt angles were determined. A MATLAB-based code is used to calculate the daily optimum tilt angle. The results were in good agreement with the obtained data of a new constructed device. Finally, in the case of stationary devices, some recommendations were presented with respect to their typical application.

Hamid Moghadam; Farshad Farshchi Tabrizi; Ashkan Zolfaghari Sharak

2011-01-01T23:59:59.000Z

114

Commercial Decommissioning at DOE's Rocky Flats  

SciTech Connect

Due in large part to the number of nuclear facilities that make up the DOE complex, DOE-EM work has historically been paperwork intensive and driven by extensive regulations. Requirements for non-nuclear facilities are often grouped with those of nuclear facilities, driving up costs. Kaiser-Hill was interested in applying a commercial model to demolition of these facilities and wanted to apply necessary and sufficient standards to the work activities, but avoid applying unnecessary requirements. Faced with demolishing hundreds of uncontaminated or non-radiologically contaminated facilities, Kaiser-Hill has developed a subcontracting strategy to drastically reduce the cost of demolishing these facilities at Rocky Flats. Aiming to tailor the demolition approach of such facilities to more closely follow commercial practices, Kaiser-Hill recently released a Request for Proposals (RFP) for the demolition of the site's former central administration facility. The RFP significantly reduced requirements for compliance with specific DOE directives. Instead, the RFP required subcontractors to comply with health and safety requirements commonly found in the demolition of similar facilities in a commercial setting. This resulted in a number of bids from companies who have normally not bid on DOE work previously and at a reduced cost over previous approaches. This paper will discuss the details of this subcontracting strategy.

Freiboth, C.; Sandlin, N.; Schubert, A.; Hansen, S.

2002-02-25T23:59:59.000Z

115

Water Monitoring Flume Replaced at the Rocky Flats, Colorado, Site |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Water Monitoring Flume Replaced at the Rocky Flats, Colorado, Site Water Monitoring Flume Replaced at the Rocky Flats, Colorado, Site Water Monitoring Flume Replaced at the Rocky Flats, Colorado, Site October 22, 2013 - 11:01am Addthis What does this project do? Goal 1. Protect human health and the environment In August of this year the U.S. Department of Energy (DOE) Office of Legacy Management (LM) Rocky Flats, site took advantage of an existing water diversion structure that was no longer needed, to replace an aging water monitoring flume and avoid future repairs that could interrupt data collection. The flume for Rocky Flats Legacy Management Agreement (RFLMA) Point of Evaluation (POE) monitoring location GS10 in South Walnut Creek was located at the bottom of fairly steep channel banks. The bank on the south side shows localized slumping and sliding toward the creek and GS10. Although

116

Independent Oversight Review, Rocky Flats Environmental Technology Site -  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Rocky Flats Environmental Technology Rocky Flats Environmental Technology Site - March 2000 Independent Oversight Review, Rocky Flats Environmental Technology Site - March 2000 March 2000 Review of the Rocky Flats Environmental Technology Site Transportation Emergency Management Program The U.S. Department of Energy (DOE) Office of Emergency Management Oversight, within the Office of Independent Oversight and Performance Assurance, conducted a transportation emergency management review and a follow-up review of the emergency management program at Rocky Flats Environmental Technology Site (RFETS) in February 2000. The primary purpose of this review was to assess the effectiveness of the Department's emergency management programs for transportation events involving hazardous materials (not related to transuranic waste or nuclear

117

EA-1146: Radioactive Waste Storage at Rocky Flats Environmental Technology  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

46: Radioactive Waste Storage at Rocky Flats Environmental 46: Radioactive Waste Storage at Rocky Flats Environmental Technology Site, Golden, Colorado EA-1146: Radioactive Waste Storage at Rocky Flats Environmental Technology Site, Golden, Colorado SUMMARY This EA evaluates the environmental impacts of the proposal to convert buildings at the U.S. Department of Energy Rocky Flats Environmental Technology Site from their former uses to interim waste storage facilities in order to increase storage capacity for low-level waste, low-level mixed waste, transuranic waste, and transuranic mixed waste. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD April 9, 1996 EA-1146: Finding of No Significant Impact Radioactive Waste Storage at Rocky Flats Environmental Technology Site, Golden, Colorado

118

Independent Oversight Review, Rocky Flats Environmental Technology Site -  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Independent Oversight Review, Rocky Flats Environmental Technology Independent Oversight Review, Rocky Flats Environmental Technology Site - March 2000 Independent Oversight Review, Rocky Flats Environmental Technology Site - March 2000 March 2000 Review of the Rocky Flats Environmental Technology Site Transportation Emergency Management Program The U.S. Department of Energy (DOE) Office of Emergency Management Oversight, within the Office of Independent Oversight and Performance Assurance, conducted a transportation emergency management review and a follow-up review of the emergency management program at Rocky Flats Environmental Technology Site (RFETS) in February 2000. The primary purpose of this review was to assess the effectiveness of the Department's emergency management programs for transportation events involving hazardous materials (not related to transuranic waste or nuclear

119

West Ford Flat Geothermal Facility | Open Energy Information  

Open Energy Info (EERE)

Ford Flat Geothermal Facility Ford Flat Geothermal Facility Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home West Ford Flat Geothermal Facility General Information Name West Ford Flat Geothermal Facility Facility West Ford Flat Sector Geothermal energy Location Information Location Clear Lake, California Coordinates 38.788136285865°, -122.72210240364° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.788136285865,"lon":-122.72210240364,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

120

Microsoft Word - RockyFlatsPropLR111406.doc  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

November 15, 2006 November 15, 2006 REPLY TO ATTN OF: IG-40 SUBJECT: Letter Report on "Alleged Waste of Funds Involving Excess Property at Rocky Flats" (INS-L-07-03) TO: Assistant Secretary for Environmental Management This is to advise you of the results of an Office of Inspector General inspection of alleged waste of funds involving excess property at the Department of Energy's (DOE's) Rocky Flats site. BACKGROUND Nuclear weapons production operations at Rocky Flats were discontinued in 1992. Subsequently, responsibility for Rocky Flats was reassigned from the Department's Office of Defense Programs to the Office of Environmental Management. In January 2000, DOE entered into a contract with Kaiser-Hill Company, LLC, for the closure of Rocky Flats by

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Left invertibility, flatness and identifiability of switched linear dynamical systems: a framework  

E-Print Network (OSTI)

Left invertibility, flatness and identifiability of switched linear dynamical systems: a framework invertibility and flatness, dynamical systems are structurally equivalent to some specific cryptographic invertibility, flatness and identifiability of discrete- time switched linear systems are investigated

Paris-Sud XI, Université de

122

Isotropic and deviatoric characterization of the Coalora nuclear explosion in Yucca Flats  

Science Journals Connector (OSTI)

......detonated at Yucca Flats, Nevada Test Site (NTS), are utilized...detonated at Yucca Flats, Nevada Test Site (NTS), are utilized...at the Novaya Zemlya test sites, Bull. seism. Soc...Structure at Yucca Flat, Nevada, Geophysics, 53......

Brian W. Stump; Robert E. Reinke; Kenneth H. Olsen; Lane R. Johnson

1994-03-01T23:59:59.000Z

123

Final Rocky Flats Cleanup Agreement, July 19, 1996 Summary  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Rocky Flats Cleanup Agreement Rocky Flats Cleanup Agreement State Colorado Agreement Type Federal Facility Agreement Legal Driver(s) CERCLA/RCRA Scope Summary Establish the regulatory framework for achieving the ultimate cleanup of the Rocky Flats Site. Parties DOE; US EPA; The State of Colorado Date 7/19/1996 SCOPE * Establish the regulatory framework for achieving the ultimate cleanup of the Rocky Flats Site. * Ensure that the environmental impacts associated with activities at the Site will continue to be investigated and that appropriate response actions are taken. * Establish a procedural framework and schedule for developing, implementing, and monitoring appropriate response actions at the site. * Coordinate all of DOE's cleanup obligations under CERCLA, RCRA, and the Colorado

124

Preliminary Notice of Violation , Rocky Flats Environmental Technology Site  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Violation , Rocky Flats Environmental Violation , Rocky Flats Environmental Technology Site - EA-96-05 Preliminary Notice of Violation , Rocky Flats Environmental Technology Site - EA-96-05 October 7, 1996 Preliminary Notice of Violation issued to Safe Sites of Colorado related to Radiological and Work Control Deficiencies associated with Two Radiological Release Events at the Rocky Flats Environmental Technology Site, (EA-96-05) Based on our evaluation of these matters, DOE has concluded that violations of DOE's Occupational Radiation Protection Rule (10 CFR 835) and Quality Assurance Rule (10 CFR 830.120) likely occurred. An enforcement conference was held with you, as well as senior management of KHLL and Rocky Mountain Remediation Services (RMRS), on September 10, 1996. This conference included a discussion of the facts and circumstances surrounding these

125

Rocky Flats Former Construction Workers, Construction Worker Screening  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Rocky Flats Former Construction Workers, Construction Worker Rocky Flats Former Construction Workers, Construction Worker Screening Projects Rocky Flats Former Construction Workers, Construction Worker Screening Projects Project Name: Building Trades National Medical Screening Program Covered DOE Site: Rocky Flats Worker Population Served: Construction Workers Principal Investigator: Knut Ringen, DrPH, MHA, MPH Toll-free Telephone: (800) 866-9663 Local Outreach Office: Dwayne Adkins 7510 W. Mississippi Ave., Suite 230 Lakewood, CO 80226 Website: http://www.btmed.org This project is intended to provide free medical screening to former workers in the building trades (construction workers). The screening targets health problems resulting from exposures, including asbestos, beryllium, cadmium, chromium, lead, mercury, noise, radiation, silica

126

Gabbs Alkali Flat Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Gabbs Alkali Flat Geothermal Area Gabbs Alkali Flat Geothermal Area (Redirected from Gabbs Alkali Flat Area) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Gabbs Alkali Flat Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (2) 10 References Area Overview Geothermal Area Profile Location: Nevada Exploration Region: Walker-Lane Transition Zone Geothermal Region GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0

127

Microsoft Word - RockyFlatsCRO20030221.doc  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

300,000 Block Grant to the 300,000 Block Grant to the Rocky Flats Community Reuse Organization Money Will Be Used To Develop Comprehensive Refuge Plan for Rocky Flats WASHINGTON, DC - The Department of Energy (DOE) today announced that it will award $300,000 to the Rocky Flats Coalition of Local Governments. A CRO is an organization recognized by the Energy Department that can apply for funding for programs that can modify the impacts of workforce restructuring at its facilities and reduce community dependence on the department's activities. This grant will enable the community reuse organization (CRO) to continue to play a critical role in working with the Energy Department on the development of a comprehensive refuge plan for Rocky Flats, review cleanup and closure documents to ensure that they meet long-term

128

Final Transuranic Waste Shipment Leaves Rocky Flats | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Final Transuranic Waste Shipment Leaves Rocky Flats Final Transuranic Waste Shipment Leaves Rocky Flats Final Transuranic Waste Shipment Leaves Rocky Flats April 19, 2005 - 12:23pm Addthis Cleanup Ahead of Schedule, On Track to Save Taxpayers Billions GOLDEN, CO. - A major environmental victory was achieved at the Rocky Flats Site in Golden, Colo., today when the final remaining shipment of radioactive, transuranic (TRU) waste left the property on a truck bound for an underground waste repository in New Mexico. This major milestone is another step toward the final conversion of the site to a National Wildlife Refuge managed by the U.S. Fish and Wildlife Service. "This is great news for all of Colorado, and would not have been possible without hand-in-glove cooperation between the Department of Energy, the

129

Haptic overlay device for flat panel touch displays  

Science Journals Connector (OSTI)

In an effort to present users with an increasing amount of information, many industries including automotive and aerospace are adopting flat panel touch displays as a user interface. These interfaces are becoming popular due to their reconfigurability ...

David Wang; Kevin Tuer; Mauro Rossi; Joseph Shu

2004-03-01T23:59:59.000Z

130

DOE's Former Rocky Flats Weapons Production Site to Become National...  

Energy Savers (EERE)

Flats nuclear weapons production site to the Department of the Interior's (DOI) U.S. Fish and Wildlife Service (FWS) for use as a National Wildlife Refuge. After more than a...

131

The Redshift Distribution of Flat-Spectrum Radio Sources  

E-Print Network (OSTI)

The redshift distribution of flat-spectrum radio sources with 5 GHz flux densities S>5 mJy is a key component in using current radio lens surveys to probe the cosmological model. We have constructed the first flat-spectrum radio sample in the flux density range 3-20 mJy. Our new sample has 33 sources; we have determined the redshifts of 14 of these (42% complete). The low mean redshift, ~0.75, of our faintest sample needs to be confirmed by further observations to improve the sample completeness. We also increased the redshift completeness of several surveys of brighter flat-spectrum sources. While the mean redshift, ~1.1 of flat-spectrum samples fainter than 1 Jy is nearly constant, the fraction of the sources identifiable as quasars steadily drops from ~80% to ~10% as the flux density of the sources decreases.

J. A. Munoz; E. E. Falco; C. S. Kochanek; J. Lehar; E. Mediavilla

2003-05-20T23:59:59.000Z

132

On the performance of the flat plate solar heat collector  

Science Journals Connector (OSTI)

A flat plate heat collector was constructed for the purpose of heating water by solar energy. It was erected facing south, tilted to the horizontal at the optimum tilt angle, and tested ... was found, for the dim...

M. K. Elnesr; A. M. Khalil

1965-01-01T23:59:59.000Z

133

Cathodic Arc Deposition of Copper Oxide Thin Films  

E-Print Network (OSTI)

in the range 1-1.25 GHz, UHV compatible, and very adhesivefulfill the requirements for UHV compatibility. A cathodic85 MPa) and fulfill all UHV requirements. The deposition

MacGill, R.A.

2011-01-01T23:59:59.000Z

134

Notice Type: Presolicitation  

E-Print Network (OSTI)

Model ST-500-UHV, UHV Compatible, Continuous Flow, Optical Cryostat System, 1 each Snout Vacuum Enclosure for Model ST-500-UHV, UHV Compatible Continuous Flow, Optical Cryostat System. (Microsoft IE

135

Benchmarking and performance improvement at Rocky Flats Technology Site  

SciTech Connect

The Rocky Flats Environmental Technology Site has initiated a major work process improvement campaign using the tools of formalized benchmarking and streamlining. This paper provides insights into some of the process improvement activities performed at Rocky Flats from November 1995 through December 1996. It reviews the background, motivation, methodology, results, and lessons learned from this ongoing effort. The paper also presents important gains realized through process analysis and improvement including significant cost savings, productivity improvements, and an enhanced understanding of site work processes.

Elliott, C. [Kaiser-Hill Co., (United States); Doyle, G. [EG and G Rocky Flats, Inc., Golden, CO (United States); Featherman, W.L. [Project Performance Corp. (United States)

1997-03-01T23:59:59.000Z

136

Method of forming a spacer for field emission flat panel displays  

DOE Patents (OSTI)

Spacers are disclosed for applications such as field emission flat panel displays and vacuum microelectronics, and which involves the application of aerogel/xerogel technology to the formation of the spacer. In a preferred approach the method uses a mold and mold release agent wherein the gel precursor is a liquid which can be applied to the mold filling holes which expose the substrate (either the baseplate or the faceplate). A release agent is applied to the mold prior to precursor application to ease removal of the mold after formation of the dielectric spacer. The shrinkage of the gel during solvent extraction also improves mold removal. The final spacer material is a good dielectric, such as silica, secured to the substrate. 3 figs.

Bernhardt, A.F.; Contolini, R.J.

1997-08-19T23:59:59.000Z

137

Ground magnetic studies along a regional seismic-reflection profile across Bare Mountain, Crater Flat and Yucca Mountain, Nevada  

SciTech Connect

Ground magnetic data were collected along a 26-km-long regional seismic-reflection profile in southwest Nevada that starts in the Amargosa Desert, crosses Bare Mountain, Crater Flat and Yucca Mountain, and ends in Midway Valley. Parallel ground magnetic profiles were also collected about 100 m to either side of the western half of the seismic-reflection line. The magnetic data indicate that the eastern half of Crater Flat is characterized by closely-spaced faulting (1--2 km) in contrast to the western half of Crater Flat. Modeling of the data indicates that the Topopah Spring Tuff is offset about 250 m on the Solitario Canyon fault and about 50 m on the Ghost Dance fault. These estimates of fault offset are consistent with seismic-reflection data and geologic mapping. A broad magnetic high of about 500--600 nT is centered over Crater Flat. Modeling of the magnetic data indicates that the source of this high is not thickening and doming of the Bullfrog Tuff, but more likely lies below the Bullfrog Tuff. Possible source lithologies for this magnetic high include altered argillite of the Eleana Formation, Cretaceous or Tertiary intrusions, and mafic sills.

Langenheim, V.E.; Ponce, D.A.

1995-12-31T23:59:59.000Z

138

Data Formats  

Science Journals Connector (OSTI)

This chapter provides a taxonomy of existing data formats for power power system analysis. These include most commonly used formats of free and proprietary software packages as well as the IEC common informati...

Federico Milano

2010-01-01T23:59:59.000Z

139

Rocky Flats Site Expands Solar Power for Treating Groundwater | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Rocky Flats Site Expands Solar Power for Treating Groundwater Rocky Flats Site Expands Solar Power for Treating Groundwater Rocky Flats Site Expands Solar Power for Treating Groundwater April 17, 2013 - 1:26pm Addthis Subcontractor personnel install solar panels and other infrastructure on a 40-foot conex box that houses the batteries and control equipment for the 6 kilowatt photovoltaic system that powers the ETPTS groundwater treatment system. Subcontractor personnel install solar panels and other infrastructure on a 40-foot conex box that houses the batteries and control equipment for the 6 kilowatt photovoltaic system that powers the ETPTS groundwater treatment system. DOE was able to minimize impacts to the habitat of a federally protected mouse and provide the potential for relatively easy relocation by mounting the solar panels on the side of the conex box that houses the batteries and other system equipment.

140

Flat-Plate Photovoltaic Module Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Module Basics Module Basics Flat-Plate Photovoltaic Module Basics August 20, 2013 - 4:25pm Addthis Flat-plate photovoltaic (PV) modules are made of several components, including the front surface materials, encapsulant, rear surface, and frame. Front Surface Materials The front surface of a flat-plate PV module must have a high transmission in the wavelengths that can be used by the solar cells in the module. For example, for silicon solar cells, the top surface must have high transmission of light with wavelengths from 350 to 1200 nm. Also, reflection from the front surface should be minimal. An antireflection coating added to the top surface can greatly reduce the reflection of sunlight, and texturing of the surface can cause light that strikes the surface to stay within the cells. Unfortunately, these textured

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Flat plate solar collector with a cantilevered mirror  

SciTech Connect

The use of flat booster mirrors with flat plate collectors provides moderate solar flux concentration and enhanced performance especially when the mirrors are seasonally adjusted. Curved mirrors provide higher flux concentration and a practical system has been developed where the booster mirror is bent elastically. The system employs a single cantilever mirror which is located below a conventional flat plate collector. The mirror is clamped at the base of the collector panel and its free end is deflected upward; a smaller deflection is used in the fall and winter than in the spring and summer. The prototype system consists of a 0.9 by 2.5 m collector panel mounted on its side (horizontal fluid flow) and a 2.7 by 2.5 m elastic mirror. The mirror is made with aluminum sheet with an adherent aluminized acrylic film. The system has been designed for mounting on horizontal surfaces at latitudes of 10 to 50/sup 0/.

Cohen, S.; Larson, D.C.

1981-01-01T23:59:59.000Z

142

Rocky Flats Plant Site Environmental Report, January--December 1990  

SciTech Connect

This report provides information to the public about the impact of the Rocky Flats Plant on the environment and public health. The report contains a compliance summary, a description of environmental monitoring programs, and radiation dose estimates for the surrounding population for the period January 1 through December 31, 1990. An environmental surveillance program has been ongoing at the Rocky Flats Plant since the 1950s. Early programs focused on radiological impacts to the environment. The current program examines potential impacts to air, surface water, groundwater, and soils from radiological and nonradiological sources. Environmental operations at Rocky Flats Plant are under the jurisdiction of several local, state, and federal agencies, most notably the Colorado Department of Health, Environmental Protection Agency, and Department of Energy. A variety of reports are prepared at different intervals for these and other agencies in addition to the annual environmental report.

Cirrincione, D.A.; Costain, D.B. [EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant

1990-12-31T23:59:59.000Z

143

Rocky Flats Site Expands Solar Power for Treating Groundwater | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Rocky Flats Site Expands Solar Power for Treating Groundwater Rocky Flats Site Expands Solar Power for Treating Groundwater Rocky Flats Site Expands Solar Power for Treating Groundwater April 17, 2013 - 1:26pm Addthis Subcontractor personnel install solar panels and other infrastructure on a 40-foot conex box that houses the batteries and control equipment for the 6 kilowatt photovoltaic system that powers the ETPTS groundwater treatment system. Subcontractor personnel install solar panels and other infrastructure on a 40-foot conex box that houses the batteries and control equipment for the 6 kilowatt photovoltaic system that powers the ETPTS groundwater treatment system. DOE was able to minimize impacts to the habitat of a federally protected mouse and provide the potential for relatively easy relocation by mounting the solar panels on the side of the conex box that houses the batteries and other system equipment.

144

Gabbs Alkali Flat Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Gabbs Alkali Flat Geothermal Area Gabbs Alkali Flat Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Gabbs Alkali Flat Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (2) 10 References Area Overview Geothermal Area Profile Location: Nevada Exploration Region: Walker-Lane Transition Zone Geothermal Region GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0 No geothermal plants listed.

145

Electrochemical formation of field emitters  

DOE Patents (OSTI)

Electrochemical formation of field emitters, particularly useful in the fabrication of flat panel displays. The fabrication involves field emitting points in a gated field emitter structure. Metal field emitters are formed by electroplating and the shape of the formed emitter is controlled by the potential imposed on the gate as well as on a separate counter electrode. This allows sharp emitters to be formed in a more inexpensive and manufacturable process than vacuum deposition processes used at present. The fabrication process involves etching of the gate metal and the dielectric layer down to the resistor layer, and then electroplating the etched area and forming an electroplated emitter point in the etched area.

Bernhardt, Anthony F. (Berkeley, CA)

1999-01-01T23:59:59.000Z

146

Flat Glass Manufacturing Plant EPI | ENERGY STAR Buildings & Plants  

NLE Websites -- All DOE Office Websites (Extended Search)

Flat Glass Manufacturing Plant EPI Flat Glass Manufacturing Plant EPI Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder

147

Wave interaction with a fixed vertical flat plate  

E-Print Network (OSTI)

. Hydrofoil definition sketch. The sharp-edged gust problem and the problem of a step-wise cnange in the velocity perpendicular to the foil offers insight into the response of a foil subject to an oscillating fluid. A sharp-edged gust with an initial... forces on a thin flat plate with a standard hydrofoil thickness was determined experimentally in a two-dimensional wave tank. Non-dimensional parameters were plotted and used to evaluate the data. It was shown that lift can be generated on a flat...

Glover, Lanny Bruce

1985-01-01T23:59:59.000Z

148

Rocky Flats Plant site environmental report, January--December 1991  

SciTech Connect

This report provides information to the public about the impact of the Rocky Flats Plant on the environment and public health. The report contains a compliance summary, 4 description of environmental monitoring programs, and radiation dose estimates for the surrounding population for the period January 1 through December 31, 1991. An environmental surveillance program has been ongoing at the Rocky Flats Plant since the 1950s. Early programs focused on radiological impacts to the environment. The current program not only examines potential impacts to air surface water, groundwater, and soils from radiological and nonradiological sources, but also includes ecological studies and environmental remediation programs.

Cirrncione, D.A.; Erdmann, N.L. [eds.

1991-12-31T23:59:59.000Z

149

File Formats  

NLE Websites -- All DOE Office Websites (Extended Search)

Home Page Home Page File Formats MODIS Product Subsets Output Data File Format Descriptions The MODIS product subsets for North America and Worldwide are available in several formats, which are described in the following text. MODIS Land Product ASCII Data Image Data Files in ASCII Grid Format QC-Filtered Data and Statistics Generated for this Request Land Cover Data in ASCII Grid Format Statistical Data for MODIS Land Products in Comma Separated Format Underlying BRDF Parameters Used in Generating this Request (available with Albedo MOD43B and MCD43B only) MODIS Land Product ASCII Data Description of File File Content: Data as read from MODIS Land Product HDF-EOS data files. These data are the starting point for deriving the other subset data products. Data Type: As indicated by Land Product Code (e.g., MOD15A2).

150

Utility Formation  

NLE Websites -- All DOE Office Websites (Extended Search)

amounts See detailed discussion of these standards. For more information regarding tribal utility formation, contact the Power Service Line Account Executives: Eastern Power...

151

Windy Flats(3Q09 portion) | Open Energy Information  

Open Energy Info (EERE)

Windy Flats(3Q09 portion) Windy Flats(3Q09 portion) Jump to: navigation, search Name Windy Flats(3Q09 portion) Facility Windy Flats(3Q09 portion) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Cannon Power Group Developer Cannon Power Group Location North shore of Columbia River Coordinates 45.699622°, -120.774622° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.699622,"lon":-120.774622,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

152

Differentially Flat Trajectory Generation for a Dynamically Stable Mobile Robot  

E-Print Network (OSTI)

for the ballbot, a dynamically stable mobile robot which balances on a single spherical wheel. To this end, assumptions are made to form the system as differentially flat, and a method of deriving feasible trajectories, dynamically stable mobile robot. It is a human-sized robot that balances on a single spherical wheel

153

Science in a Flat World (George B. Pegram Lecture Series)  

SciTech Connect

Lane discusses the changes that have taken place in the world since World War II that have made it "flatter," referring to Thomas L. Friedman's book, The World is Flat. Friedman's main premise is that inexpensive telecommunications is bringing about unhampered international competition, the demise of economic stability, and a trend toward outsourcing services, such as computer programming, engineering and science research.

Lane, Neal (former Science Advisor to President Billl Clinton) [former Science Advisor to President Billl Clinton

2006-09-12T23:59:59.000Z

154

Rocky Flats Cleanup Agreement implementation successes and challenges  

SciTech Connect

On July 19, 1996 the US Department of Energy (DOE), State of Colorado (CDPHE), and US Environmental Protection Agency (EPA) entered into an agreement called the Rocky Flats Cleanup Agreement (RFCA) for the cleanup and closure of the Rocky Flats Environmental Technology Site (RFETS or Rocky Flats). Major elements of the agreement include: an Integrated Site-Wide Baseline; up to twelve significant enforceable milestones per year; agreed upon soil and water action levels and standards for cleanup; open space as the likely foreseeable land use; the plutonium and TRU waste removed by 2015; streamlined regulatory process; agreement with the Defense Nuclear Facilities Safety Board (DNFSB) to coordinate activities; and a risk reduction focus. Successful implementation of RFCA requires a substantial effort by the parties to change their way of thinking about RFETS and meet the deliverables and commitments. Substantial progress toward Site closure through the implementation of RFCA has been accomplished in the short time since the signing, yet much remains to be done. Much can be learned from the Rocky Flats experience by other facilities in similar situations.

Shelton, D.C.

1997-02-01T23:59:59.000Z

155

No Open or Flat Bouncing Cosmologies in Einstein Gravity  

E-Print Network (OSTI)

We show that bouncing open or flat Friedmann-Robertson-Walker cosmologies are inconsistent with worldsheet string theory to first approximation. Specifically, the Virasoro constraint translates to the null energy condition in spacetime at leading order in the alpha-prime expansion. Thus one must go beyond minimally-coupled Einstein gravity in order to find bounce solutions.

Parikh, Maulik K

2015-01-01T23:59:59.000Z

156

Remediation of the Maxey Flats Site. Final report  

SciTech Connect

This report describes issues associated with remedial action of Maxey Flats, a low-level radioactive waste disposal site from 1963-1977, located in Fleming County, Kentucky. Present remedial action alternatives being considered are discussed along with emergency plans, ground water monitoring plans, and budgets.

Not Available

1990-01-12T23:59:59.000Z

157

Characterization of plutonium in Maxey Flats radioactive trench leachates  

SciTech Connect

Plutonium in trench leachates at the Maxey Flats radioactive waste disposal site exists as dissolved species, primarily complexes of the tetravalent ion with strong organic ligands such as ethylenediaminetetraacetic acid. The complexes are not sorbed well by sediment and are only partly precipitated by ferric hydroxide. These results indicate the importance of isolating radioactive waste from organic matter. 3 tables.

Cleveland, J.M.; Rees, T.F.

1981-06-26T23:59:59.000Z

158

Geochemistry of trench leachates from Maxey Flats disposal site  

SciTech Connect

The results of the analysis of trench leachates collected at Maxey Flats in October 1981 are presented, and the geochemical factors controlling the trench water chemistry are discussed. In addition, results of laboratory oxidation experiments performed on trench leachates, simulating the behavior of anoxic trench waters as they encounter upon migration an oxidizing environment, are presented.

Dayal, R.; Pietrzak, R.F.; Clinton, J.; Kinsley, M.

1983-01-01T23:59:59.000Z

159

Site wide integration of the Rocky Flats closure project  

SciTech Connect

The prime contractor for the Rocky Flats Closure Project (RFCP), Kaiser-Hill, in concert with the Department of Energy--Rocky Flats Field Office (DOE-RFFO) has applied a fully integrated, life-cycle, critical path schedule and work planning system to manage the work that is required to close the Site. The closure of the Site is complex, in that it houses over 700 facilities, 19,600 kilograms of Special Nuclear Material (Plutonium and Uranium), and over 160,000 cubic meters of Transuranic, Low Level, and Hazardous Waste. The deactivation, decommissioning, decontaminating, and demolition of this large number of facilities, while at the same time accommodating difficult on-going activities, significantly increases the sophistication required in the planning process. The Rocky Flats team has overcome these difficulties by establishing a money oriented critical path process, to provide a least-cost avenue to supporting on-going activities and a line-of-balance process for production oriented activities. These processes, when integrated with a typical activity-based project planning system, guide the way to the shortest and most cost-effective course for the closure of the Rocky Flats Site.

Burdge, L.F.; Golan, P.

1998-06-01T23:59:59.000Z

160

TGS measurements of pyrochemical salts at Rocky Flats  

SciTech Connect

A new skid-mounted tomographic gamma scanner (TGS) was designed to assist in the decommissioning of Rocky Flats Building 37 1, This instrument was used to assay pyrochemical salts as a prerequisite for disposal at the Waste Isolation Pilot Plant (WIPP). The following paper discusses measurement challenges and results from the first year of operation of the instrument.

Mercer, D. J. (David J.); Hansen, J. S. (J. Steven); Lestone, J. P. (John P.); Prettyman, T. H. (Thomas H.)

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Adsorption study for uranium in Rocky Flats groundwater  

SciTech Connect

Six adsorbents were studied to determine their effectiveness in removing uranium in Rocky Flats groundwater. The bench column and batch (Kd) tests showed that uranium can be removed (>99.9%) by four adsorbents. Bone Charcoal (R1O22); F-1 Alumina (granular activated alumina); BIOFIX (immobilized biological agent); SOPBPLUS (mixed metal oxide); Filtrasorb 300 (granular activated carbon); and Zeolite (clinoptilolite).

Laul, J.C.; Rupert, M.C. [EG and G Rocky Flats, Inc., Golden, CO (United States); Harris, M.J. [Science Applications International Corp., Golden, CO (United States); Duran, A. [Environmental Protection Agency, Denver, CO (United States)

1995-01-01T23:59:59.000Z

162

Interacting generalized Chaplygin gas model in non-flat universe  

E-Print Network (OSTI)

We employ the generalized Chaplygin gas of interacting dark energy to obtain the equation of state for the generalized Chaplygin gas energy density in non-flat universe. By choosing a negative value for $B$ we see that $w_{\\rm \\Lambda}^{eff}< -1$, that corresponds to a universe dominated by phantom dark energy.

M R Setare

2007-11-04T23:59:59.000Z

163

Initial growth on microcrystalline silicon on atomically flat hetero-substrate  

SciTech Connect

Initial growth of microcrystalline silicon ({micro}c-Si:H) deposited on an atomically flat GaAs (001) wafer using a RF glow-discharge decomposition of hydrogen diluted monosilane gas mixture has been studied by means of atomic force microscope (AFM), Auger electron spectroscopy (AES), and cross-sectional transmission electron microscopy (XTEM). It is shown that the initial growth of {micro}c-Si:H deposited at a substrate temperature of 50--250 C consists of four successive stages, i.e., (1) a layer-by-layer growth of a-Si:H up to d {approximately}5 {angstrom}, (2) island formation of a-Si:H, (3) the coalescence of the islands and the nucleation of microcrystalline at d{approximately}10{approximately}40 {angstrom} depending on the growth temperature, and (4) a rapid roughening with microcrystalline growth.

Saitoh, K.; Kondo, M.; Matsuda, A.

1997-07-01T23:59:59.000Z

164

Health Surveillance Outcomes in Former Rocky Flats Radiation Workers  

NLE Websites -- All DOE Office Websites (Extended Search)

Surveillance of Rocky Flats Radiation Workers Surveillance of Rocky Flats Radiation Workers Janice P. Watkins 1 , Elizabeth D. Ellis 1 , F. Joseph Furman 2 , Roger B. Falk 2 , Joe M. Aldrich 2 , and Donna L. Cragle 1 ORAU Technical Report # 2006-0408 1 Oak Ridge Institute for Science and Education, Center for Epidemiologic Research; P.O. Box 117; Oak Ridge, TN 37831-0117 2 Oak Ridge Institute for Science and Education, Center for Epidemiologic Research; 9950 W. 80 th Avenue, Suite 17; Arvada, CO 80005-3914 This report was funded by Department of Energy Environmental Health Division under contract number DE-AC05-00OR22750. Table of Contents List of Figures.................................................................................................................2 List of Tables

165

East Flat Rock, North Carolina: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Flat Rock, North Carolina: Energy Resources Flat Rock, North Carolina: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 35.2801166°, -82.4220631° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.2801166,"lon":-82.4220631,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

166

Big Flats, Wisconsin: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Flats, Wisconsin: Energy Resources Flats, Wisconsin: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 44.111913°, -89.8079032° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.111913,"lon":-89.8079032,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

167

DOE - Office of Legacy Management -- Rocky Flats Archive  

NLE Websites -- All DOE Office Websites (Extended Search)

Archive Archive Rocky Flats Site, Colorado Key Document Archive All documents are Adobe Acrobat files. pdf_icon NEPA - Rocky Flats Surface Water Configuration Environmental Assessment (EA) Site-Specific Uranium Standards Petition Site Surveillance and Maintenance Reports Quarterly Reports 2013 3rd Quarter 2nd Quarter Overview 1st Quarter Overview 2012 3rd Quarter Overview 2nd Quarter Overview 1st Quarter Overview 2011 3rd Quarter Overview 2nd Quarter Overview 1st Quarter Overview 2010 3rd Ouarter Overview 2nd Ouarter Overview 1st Quarter Overview 2009 1st Quarter Overview 2nd Ouarter Overview 3rd Quarter Overview 2008 1st Quarter Overview 2nd Quarter Overview 3rd Quarter Overview 2007 1st Quarter Overview 2nd Quarter Overview 3rd Quarter Overview 2006

168

Plane-parallel waves as duals of the flat background  

E-Print Network (OSTI)

We give a classification of non-Abelian T-duals of the flat metric in D=4 dimensions with respect to the four-dimensional continuous subgroups of the Poincare group. After dualizing the flat background, we identify majority of dual models as conformal sigma models in plane-parallel wave backgrounds, most of them having torsion. We give their form in Brinkmann coordinates. We find, besides the plane-parallel waves, several diagonalizable curved metrics with nontrivial scalar curvature and torsion. Using the non-Abelian T-duality, we find general solution of the classical field equations for all the sigma models in terms of d'Alembert solutions of the wave equation.

Ladislav Hlavaty; Ivo Petr

2014-12-03T23:59:59.000Z

169

Actinide solution processing at the Rocky Flats Environmental Technology Site  

SciTech Connect

The Department of Energy (DOE) has prepared an Environmental Assessment (EA), DOE/EA-1039, for radioactive solution removal and processing at Rocky Flats Environmental Technology Site, Golden, Colorado. The proposal for solution removal and processing is in response to independent safety assessments and an agreement with the State of Colorado to remove mixed residues at Rocky Flats and reduce the risk of future accidents. Monthly public meetings were held during the scoping and preparation of the EA. The scope of the EA included evaluations of alternative methods and locations of solution processing. A comment period from February 20, 1995 through March 21, 1995 was provided to the public and the State of Colorado to offer written comment on the EA. Comments were received from the State of Colorado and the U.S. Environmental Protection Agency. A response to the agency comments is included in the Final EA.

NONE

1995-04-01T23:59:59.000Z

170

Colorado and the Accelerated Cleanup at Rocky Flats  

SciTech Connect

When the Rocky Flats closure project was declared complete in October 2005, it was the largest environmental cleanup to date. Even more impressive, it was ahead of schedule and well under budget. Several factors combined to produce this success including a performance-based contract with financial incentives, development and application of innovative technologies, and a regulator-backed accelerated approach to the cleanup process. The factor in this success in which the State of Colorado had the largest role was in developing and enforcing the Rocky Flats Cleanup Agreement. In compliance with this agreement, cleanup was accomplished by means of multiple interim actions that led to a comprehensive final decision at the end. A key element that allowed the accelerated cleanup was constant consultation among DOE, its contractor, and the regulators plus collaboration with stakeholders. (authors)

Spreng, C. [Public Health and Environment, Colorado Dept., Denver, CO (United States)

2007-07-01T23:59:59.000Z

171

Polymer solidification of mixed wastes at the Rocky Flats Plant  

SciTech Connect

The Rocky Flats Plant is pursuing polymer solidification as a viable treatment option for several mixed waste streams that are subject to land disposal restrictions within the Resource Conservation and Recovery Act provisions. Tests completed to date using both surrogate and actual wastes indicate that polyethylene microencapsulation is a viable treatment option for several mixed wastes at the Rocky Flats Plant, including nitrate salts, sludges, and secondary wastes such as ash. Treatability studies conducted on actual salt waste demonstrated that the process is capable of producing waste forms that comply with all applicable regulatory criteria, including the Toxicity Characteristic Leaching Procedure. Tests have also been conducted to evaluate the feasibility of macroencapsulating certain debris wastes in polymers. Several methods and plastics have been tested for macroencapsulation, including post-consumer recycle and regrind polyethylene.

Faucette, A.M.; Logsdon, B.W.; Lucerna, J.J.; Yudnich, R.J.

1994-02-01T23:59:59.000Z

172

Facility overview for commercial application of selected Rocky Flats facilities  

SciTech Connect

The purpose of this Facility Overview is to support the Rocky Flats Local Impacts Initiative`s Request for Interest, to solicit interest from commercial corporations for utilizing buildings 865 and 883, and the equipment contained within each building, for a commercial venture. In the following sections, this document describes the Rocky Flats Site, the buildings available for lease, the equipment within these buildings, the site services available to a tenant, the human resources available to support operations in buildings 865 and 883, and the environmental condition of the buildings and property. In addition, a brief description is provided of the work performed to date to explore the potential products that might be manufactured in Buildings 865 and 883, and the markets for these products.

NONE

1996-11-01T23:59:59.000Z

173

Implementing DOE guidance for hazards assessments at Rocky Flats Plant  

SciTech Connect

Hazards Assessments are performed for a variety of activities and facilities at Rocky Flats Plant. Prior to 1991, there was no guidance for performing Hazards Assessments. Each organization that performed Hazards Assessments used its own methodology with no attempt at standardization. In 1991, DOE published guidelines for the performance of Hazards Assessments for Emergency Planning (DOE-EPG-5500.1, ``Guidance for a Hazards Assessment Methodology``). Subsequently, in 1992, DOE published a standard for the performance of Hazards Assessments (DOE-STD-1027-92, ``Hazard Categorization and Accident Analysis, Techniques for Compliance with DOE Order 5480.23, Nuclear Safety Analysis Reports``). Although these documents are a step in the direction of standardization, there remains a great deal of interpretation and subjective implementation in the performance of Hazards Assessments. Rocky Flats Plant has initiated efforts to develop a uniform and standard process to be used for Hazards Assessments.

Zimmerman, G.A.

1993-06-01T23:59:59.000Z

174

A rational approach for evaluation and screening of treatment and disposal options for the solar pond sludges at Rocky Flats  

SciTech Connect

This document consists of information about the treatment options for the sludge that is located in the evaporation ponds at the Rocky Flats Plant. The sludges are mixed low-level radioactive wastes whose composition and character were variable. Sludges similar to these are typically treated prior to ultimate disposal. Disposal of treated sludges includes both on-site and off-site options. The rational approach described in this paper is useful for technology evaluation and screening because it provides a format for developing objectives, listing alternatives, and weighing the alternatives against the objectives and against each other.

Dickerson, K.S.

1995-12-31T23:59:59.000Z

175

Special Review of the Rocky Flats Closure Project Site  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

April April 2001 Special Review of the Integrated Safety Management ISM OVERSIGHT Table of Contents EXECUTIVE SUMMARY ............................................................................... 1 1.0 INTRODUCTION ...................................................................................... 6 2.0 FOCUSED REVIEW OF THE INTEGRATED WORK CONTROL PROCESS AND LINE MANAGEMENT OVERSIGHT .............................................................................................. 8 2.1 Background ...................................................................................... 8 2.2 Line Management Oversight and Selected Other Management Systems .................................................................... 10 2.3 Rocky Flats Closure Project Integrated Work Control Process

176

Regular maximal slicings in asymptotically flat space?times  

Science Journals Connector (OSTI)

An estimate is provided for the lapse function defining asymptotically Euclidean maximal slicings in asymptotically flat space?times. This estimate is found to be in agreement with a similar estimate suggested on heuristic grounds by Smarr and York. It is also shown that in vacuum space?times the scalar curvature of maximal slices remains uniformly bounded in time provided that suitable conditions on the rate of growth of the (negative) lower bound of the Ricci curvature of the slices are satisfied.

Mauro Carfora

1985-01-01T23:59:59.000Z

177

MEASURING THE JET POWER OF FLAT-SPECTRUM RADIO QUASARS  

SciTech Connect

We use frequency-dependent position shifts of flat-spectrum radio cores to estimate the kinetic power of active galactic nucleus (AGN) jets. We find a correlation between the derived jet powers and AGN narrow-line luminosity, consistent with the well-known relation for radio galaxies and steep spectrum quasars. This technique can be applied to intrinsically weak jets even at high redshift.

Shabala, S. S.; Santoso, J. S. [School of Mathematics and Physics, University of Tasmania, Private Bag 37, Hobart, TAS 7001 (Australia); Godfrey, L. E. H. [International Centre for Radio Astronomy Research, Curtin University, GPO Box U1987, Perth, Western Australia 6845 (Australia)

2012-09-10T23:59:59.000Z

178

Distributed Roughness Receptivity in a Flat Plate Boundary Layer  

E-Print Network (OSTI)

- Distributed Receptivity . . . . . 6 2. FACILITY DESCRIPTION - THE KLEBANOFF–SARIC WIND TUNNEL 11 2.1 Test Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.2 Fan and Motor... of this dissertation describes the Klebanoff–Saric Wind Tunnel facility, which was used for this experiment. Section 3 describes the experimental setup (roughness design and the flat plate model) and defines the metrics by which the flow field is decomposed...

Kuester, Matthew Scott

2014-04-18T23:59:59.000Z

179

Rocky Flats Plant Site Environmental Report: 1993 Highlights  

SciTech Connect

The Rocky Flats Plant Site Environmental Report provides summary information on the plant`s environmental monitoring programs and the results recorded during 1993. The report contains a compliance summary, results of environmental monitoring and other related programs, a review of environmental remediation activities, information on external gamma radiation dose monitoring, and radiation dose estimates for the surrounding population. This section provides an overview of these topics and summarizes more comprehensive discussions found in the main text of this annual report.

Not Available

1993-12-31T23:59:59.000Z

180

DECOMMISSIONING CHALLENGES AT THE ROCKY FLATS ENVIRONMENTAL TECHNOLOGY SITE  

SciTech Connect

This paper presents a discussion of the demolition of the Building 788 cluster at the Rocky Flats Environmental Technology Site (RFETS) in Golden, Colorado. The Building 788 Cluster was a Resource Conservation and Recovery Act (RCRA) permitted storage facilities and ancillary structures. Topics covered include the methods employed for Project Planning, Regulatory Compliance, Waste Management, Hazard Identification, Radiological Controls, Risk Management, Field Implementation, and Cost Schedule control, and Lessons Learned and Project Closeout.

Dorr, K. A.; Hoover, J.

2002-02-25T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Inspection of management of excess personal property at Rocky Flats  

SciTech Connect

Inspection revealed that immediate management attention is needed to properly control, store, and dispose of excess personal property at Rocky Flats. Current system of operation does not allow for efficient, timely, cost effective management; current storage and disposal practices are not consistent with contract requirements or DOE policies and procedures. Other deficiencies are pointed out. Results of inspection are divided into 4 sections: contract changeover issues, moratorium issues, additional excess property issues, and award fee observations. Recommendations are outlined.

Not Available

1993-05-17T23:59:59.000Z

182

Sex, dispersion and aggression in Western Sandpipers on the Bolivar Flats, Texas  

E-Print Network (OSTI)

Flats, located on the Bolivar Peninsula, 4. 8 km northeast of Galveston, Texas. The wintering range of Western Sandpipers extends from California and North Carolina in the north, south to Peru and Surinam (AOU 1983). The Bolivar Flats, located...

Gordon, Lynn Marie

2012-06-07T23:59:59.000Z

183

Spectrally Solar Selective Coatings for Colored Flat Plate Solar Thermal Collectors  

Science Journals Connector (OSTI)

The paper is a review on the state-of-the-art on colored materials (absorbers and glazings) for solar thermal flat plate collectors obtained world-wide. The ... input for novel, market-acceptable flat plate solar

Luminita Isac; Alexandru Enesca…

2014-01-01T23:59:59.000Z

184

Map of mixed prairie grassland vegetation, Rocky Flats, Colorado  

SciTech Connect

A color vegetation map at the scale of 1:12,000 of the area surrounding the Rocky Flats, Rockwell International Plant near Boulder, Colorado, provides a permanent record of baseline data which can be used to monitor changes in both vegetation and environment and thus to contribute to future land management and land-use policies. Sixteen mapping units based on species composition were identified, and characterized by two 10-m/sup 2/ vegetation stands each. These were grouped into prairie, pasture, and valley side on the basis of their species composition. Both the mapping units and these major groups were later confirmed by agglomerative clustering analysis of the 32 vegetation stands on the basis of species composition. A modified Bray and Curtis ordination was used to determine the environmental factor complexes controlling the distribution of vegetation at Rocky flats. Recommendations are made for future policies of environmental management and predictions of the response to environmental change of the present vegetation at the Rocky Flats site.

Clark, S J.V.; Webber, P J; Komarkova, V; Weber, W A

1980-01-01T23:59:59.000Z

185

The US Department of Energy`s facility reuse at the Rocky Flats Environmental Technology Site  

SciTech Connect

This audit was initiated to determine whether the Rocky Flats Environmental Technology Site was maximizing its reuse of excess facilities.

NONE

1998-08-01T23:59:59.000Z

186

Cryogenic focal plane flatness measurement with optical zone slope Jerry Edelstein1  

E-Print Network (OSTI)

Cryogenic focal plane flatness measurement with optical zone slope tracking Jerry Edelstein1 to determine the surface flatness of a cryogenic sensor array developed for the JDEM mission. Large focal such as JDEM, WFIRST, or EUCLID must operate at cryogenic temperatures while maintaining focal plane flatness

California at Berkeley, University of

187

SIGNIFICANT NATURAL HERITAGE RESOURCES OF THE ROCKY FLATS ENVIRONMENTAL TECHNOLOGY SITE  

E-Print Network (OSTI)

SIGNIFICANT NATURAL HERITAGE RESOURCES OF THE ROCKY FLATS ENVIRONMENTAL TECHNOLOGY SITE to assess the ecological values of the Rock Creek drainage at the Rocky Flats Environmental Technology Site from existing data at the Rocky Flats Environmental Technology Site. 2.Perform ground surveys to rank

188

A lowstand epikarstic intertidal flat from the middle Silurian of Gotland, Sweden  

E-Print Network (OSTI)

flat and rocky shore to the knowledge of Silurian karst. It forms the unconform- able boundary betweenA lowstand epikarstic intertidal flat from the middle Silurian of Gotland, Sweden Mikael Calner of a karstic flat setting. Four microfacies with different stable isotopic signatures are recognised across

Calner, Mikael

189

On the charcterization of wakes from three-dimensional single and multiple flat plates on a ground plane.  

E-Print Network (OSTI)

??A flat plate is a simplified model for a heliostat, which is a large flat tracking mirror used to reflect solar energy onto a central… (more)

Barton, Gregory Harold

1985-01-01T23:59:59.000Z

190

Geochemical investigations at Maxey Flats radioactive waste disposal site. [Shallow land burial  

SciTech Connect

As part of the NRC efforts to develop a data base on source term characteristics for low level wastes, Brookhaven National Laboratory (BNL) has produced and analyzed a large amount of data on trench leachate chemistry at existing shallow land burial sites. In this report, we present the results of our investigations at the Maxey Flats, Kentucky disposal site. In particular, data on trench leachate chemistry are reviewed and discussed in terms of mechanisms and processes controlling the composition of trench solutes. Particular emphasis is placed on identifying both intra- and extra-trench factors and processes contributing to source term characteristics, modifications, and uncertainties. BNL research on the Maxey Flats disposal site has provided important information not only on the source term characteristics and the factors contributing to uncertainties in the source term but also some generic insights into such geochemical processes and controls as the mechanics of leachate formation, microbial degradation and development of anoxia, organic complexation and radionuclide mobility, redox inversion and modification of the source term, solubility constraints on solute chemistry, mineral authigenesis, corrosion products and radionuclide scavenging, and the role of organic complexants in geochemical partitioning of radionuclides. A knowledge of such processes and controls affecting the geochemical cycling of radionuclides as well as an understanding of the important factors that contribute to variability and uncertainties in the source term is essential for evaluating the performance of waste package and the site, making valid predictions of release for dose calculations, and for planning site performance monitoring as well as remedial actions. 43 references, 47 figures, 30 tables.

Dayal, R.; Pietrzak, R.F.; Clinton, J.

1984-09-01T23:59:59.000Z

191

Source term characterization for the Maxey Flats low-level radioactive waste disposal site  

SciTech Connect

The results of source term characterization studies for the Maxey Flats low-level radioactive waste disposal site show that because of the long residence time of water accumulations in the trenches, prolonged leaching and microbial degradation of waste materials occur continuously, leading to leachate formation. As a result of such interactions for extended time periods, the resultant trench leachates exhibit significant modifications in terms of inorganic, organic, and radionuclide constituents and acquire geochemical properties that are unique, compared to ambient groundwater. The leachates generally exhibit varying degrees of anoxia characterized by negative redox potentials, low dissolved oxygen and sulfate concentrations, high alkalinity, and high ammonia concentrations. The enrichments, to varying degrees, of inorganic, organic, and radionuclide constituents associated with fuel cycle and non-fuel cycle low-level wastes reflect the nature of the leaching process itself and of the waste materials. Elevated concentrations of Na/sup +/, K/sup +/, Fe/sub TOTAL/, Mn/sub TOTAL/, Cl/sup -/, dissolved organic and inorganic carbon, and several organic compounds as well as radionuclides, such as /sup 3/H, /sup 241/Am, /sup 60/Co, /sup 134/Cs, /sup 137/Cs, /sup 90/Sr, /sup 238/Pu, and /sup 239//sup,/sup 240/Pu are a consequence of waste leaching. Some of the waste-derived organic compounds present in the trenches, such as chelating agents and several carboxylic acids, are strong complexing agents and have the potential to form stable radionuclide complexes and thus enhance nuclide mobility. The consequences of past disposal practices as reflected in the problems associated with the burial of unsegregated, poorly packaged, and unstabilized wastes at the Maxey Flats disposal site indicate the significance of waste segregation, improved stabilization, and proper packaging.

Dayal, R.; Pietrzak, R.F.; Clinton, J.H.

1986-02-01T23:59:59.000Z

192

Organisms as cooperative ecosystem engineers in intertidal flats  

Science Journals Connector (OSTI)

Abstract The importance of facilitative interactions and organismal ecosystem engineering for establishing the structure of communities is increasingly being recognised for many different ecosystems. For example, soft-bottom tidal flats host a wide range of ecosystem engineers, probably because the harsh physico-chemical environmental conditions render these species of particular importance for community structure and function. These environments are therefore interesting when focusing on how ecosystem engineers interact and the consequences of these interactions on community dynamics. In this review, we initially detail the influence on benthic systems of two kinds of ecosystem engineers that are particularly common in tidal flats. Firstly, we examine species providing biogenic structures, which are often the only source of habitat complexity in these environments. Secondly, we focus on species whose activities alter sediment stability, which is a crucial feature structuring the dynamics of communities in tidal flats. The impacts of these engineers on both environment and communities were assessed but in addition the interaction between ecosystem engineers was examined. Habitat cascades occur when one engineer favours the development of another, which in turn creates or modifies and improves habitat for other species. Non-hierarchical interactions have often been shown to display non-additive effects, so that the effects of the association cannot be predicted from the effects of individual organisms. Here we propose the term of “cooperative ecosystem engineering” when two species interact in a way which enhances habitat suitability as a result of a combined engineering effect. Finally, we conclude by describing the potential threats for ecosystem engineers in intertidal areas, potential effects on their interactions and their influence on communities and ecosystem function.

Claire Passarelli; Frédéric Olivier; David M. Paterson; Tarik Meziane; Cédric Hubas

2014-01-01T23:59:59.000Z

193

Buffalo Flat Service 115-KV Transmission Project : Environmental Assessment.  

SciTech Connect

BPA, in conjunction with Midstate Electric Cooperative (Midstate), proposed to construct two sections of a new 115-kV transmission line in central Oregon: one section from BPA's LaPine Substation to Midstate's Fort Rock Substation (BPA), and the other from Fort Rock Substation to the proposed US Air Force radar transmitter site at Buffalo Flat (Midstate). The proposed line would be a total of about 74 miles long, and of either wood or steel single-pole construction; it would parallel existing corridors and/or roads for much of the distance. 23 refs., 6 figs., 5 tabs.

United States. Bonneville Power Administration.

1987-07-01T23:59:59.000Z

194

Final Land Configuration for the Rocky Flats Environmental Technology Site  

SciTech Connect

Closure of the Rocky Flats Environmental Technology Site (RFETS) has been completed. The future land use of the site is designated as a National Wildlife Refuge. A joint effort between Kaiser-Hill, Department of Energy, U.S. Fish and Wildlife Service, Environmental Protection Agency, State of Colorado, and other stakeholders was initiated to provide direction for developing the final land configuration. Through early identification of issues and developing mutually agreeable solutions, the final land configuration of the site was successfully completed. (authors)

Stegen, R. L.; Kapinos, J. M.; Wehner, J. P.; Snyder, B. [Parsons, 1700 Broadway, Suite 900, Denver, Colorado 80290 (United States); Davis, R. W. [Kaiser-Hill Company, LLC, 9193 S. Jamaica, Englewood, Colorado 80112 (United States)

2006-07-01T23:59:59.000Z

195

The Rocky Flats Environmental Technology Site beryllium characterization project  

SciTech Connect

A site beryllium characterization project was completed at the Rocky Flats Environmental Technology Site (RFETS) in 1997. Information from historical reviews, previous sampling surveys, and a new sampling survey were used to establish a more comprehensive understanding of the locations and levels of beryllium contamination in 35 buildings. A feature of the sampling strategy was to test if process knowledge was a good predictor of where beryllium contamination could be found. Results revealed that this technique was effective at identifying where surface contamination levels might exceed the RFETS smear control level but that it was not effective in identifying where low concentrations of beryllium might be found.

Morrell, D.M. [Kaiser-Hill Co. LLC, Golden, CO (United States); Miller, J.R. [Radian International LLC, Los Alamos, NM (United States); Allen, D.F. [Radian International LLC, Oak Ridge, TN (United States)

1999-06-01T23:59:59.000Z

196

Meteorology program status from Rocky Flats Environmental Technology Site  

SciTech Connect

The meteorology program at Rocky Flats Environmental Technology Site (Site) has experienced significant changes the past 18 months. The purposes of the meteorology program at the Site are to (1) support Emergency Preparedness programs for assessing the transport, dispersion, and deposition of effluents actually or potentially released into the atmosphere by Site operations; and (2) provide information for onsite and offsite projects concerned with the design of environmental monitoring networks for impact assessments, environmental surveillance operations, health and safety related activities, and remediation operations. The meteorology program includes ambient monitoring, weather forecasting, climatological analyses, air dispersion modeling, and Emergency Preparedness organizational support.

Maxwell, D.R.

1996-02-01T23:59:59.000Z

197

Symmetries of asymptotically flat electrovacuum spacetimes and radiation  

E-Print Network (OSTI)

Symmetries compatible with asymptotic flatness and admitting gravitational and electromagnetic radiation are studied by using the Bondi-Sachs-van der Burg formalism. It is shown that in axially symmetric electrovacuum spacetimes in which at least locally a smooth null infinity in the sense of Penrose exists, the only second allowable symmetry is either the translational symmetry or the boost symmetry. Translationally invariant spacetimes with in general a straight "cosmic string" along the axis of symmetry are non-radiative although they can have a non-vanishing news function. The boost-rotation symmetric spacetimes are radiative. They describe "uniformly accelerated charged particles" or black holes which in general may also be rotating - the axial and an additional Killing vector are not assumed to be hypersurface orthogonal. The general functional forms of both gravitational and electromagnetic news functions, and of the mass aspect and total mass of asymptotically flat boost-rotation symmetric spacetimes at null infinity are obtained. The expressions for the mass are new even in the case of vacuum boost-rotation symmetric spacetimes with hypersurface orthogonal Killing vectors. In Appendices some errors appearing in previous works are corrected.

J. Bicak; A. Pravdova

1998-08-25T23:59:59.000Z

198

Geologic and geotechnical assessment RFETS Building 371, Rocky Flats, Colorado  

SciTech Connect

This report describes the review and evaluation of the geological, geotechnical and geophysical data supporting the design basis analysis for the Rocky Flats Environmental Test Site (RFETS) Building 371. The primary purpose of the geologic and geotechnical reviews and assessments described herein are to assess the adequacy of the crustal and near surface rock and soil model used in the seismic analysis of Building 371. This review was requested by the RFETS Seismic Evaluation Program. The purpose was to determine the adequacy of data to support the design basis for Building 371, with respect to seismic loading. The objectives required to meet this goal were to: (1) review techniques used to gather data (2) review analysis and interpretations of the data; and (3) make recommendations to gather additional data if required. Where there were questions or inadequacies in data or interpretation, recommendations were made for new data that will support the design basis analysis and operation of Building 371. In addition, recommendations are provided for a geologic and geophysical assessment for a new facility at the Rocky Flats Site.

Maryak, M.E.; Wyatt, D.E.; Bartlett, S.F.; Lewis, M.R.; Lee, R.C.

1995-12-13T23:59:59.000Z

199

Excitation of Flat Panels by Laterally Uncorrelated Fluctuating Pressures  

Science Journals Connector (OSTI)

The response of flat rectangular panels excited by specific acoustic fields are mathematically analyzed. The acoustic fields are assumed to be divided into an arbitrary number of “strip” pressure distributions across the width of the panel. Each strip is assumed to be continuous along the length of the panel in the propagation direction. An acoustic pressure distribution such as this permits the study of joint acceptance squared coefficient frequency spectra for lateral strip?pressure correlation conditions that vary between 0 and 1. An investigation of the joint acceptance squared coefficients for the special case of a simply supported flat panel excited by laterally uncorrelated “strip” pressures was conducted and the results were compared with a previous analysis by Bozich. [“Spatial Correlation in Structural?Acoustic Coupling ” J. Acoust. Soc. Am. 36 52–58 (1964).] Combining Bozich's results with the present analysis yielded an upper and lower bound on the joint acceptance squared coefficient frequency spectra. As would be expected the ratio of the joint acceptance squared coefficients for lateral strip pressure correlation conditions of 0 and 1 was highly dependent on the lateral half?wave number and pressure strip width.

W. W. Boyd

1966-01-01T23:59:59.000Z

200

Electrochemical formation of field emitters  

DOE Patents (OSTI)

Electrochemical formation of field emitters, particularly useful in the fabrication of flat panel displays is disclosed. The fabrication involves field emitting points in a gated field emitter structure. Metal field emitters are formed by electroplating and the shape of the formed emitter is controlled by the potential imposed on the gate as well as on a separate counter electrode. This allows sharp emitters to be formed in a more inexpensive and manufacturable process than vacuum deposition processes used at present. The fabrication process involves etching of the gate metal and the dielectric layer down to the resistor layer, and then electroplating the etched area and forming an electroplated emitter point in the etched area. 12 figs.

Bernhardt, A.F.

1999-03-16T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
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201

File:Whiskey flats 100k.pdf | Open Energy Information  

Open Energy Info (EERE)

flats 100k.pdf flats 100k.pdf Jump to: navigation, search File File history File usage Metadata File:Whiskey flats 100k.pdf Size of this preview: 388 × 600 pixels. Full resolution ‎(1,650 × 2,550 pixels, file size: 375 KB, MIME type: application/pdf) Geothermal Sale Parcels Whiskey Flat File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 20:39, 7 October 2013 Thumbnail for version as of 20:39, 7 October 2013 1,650 × 2,550 (375 KB) Kyoung (Talk | contribs) Geothermal Sale Parcels Whiskey Flat You cannot overwrite this file. Edit this file using an external application (See the setup instructions for more information) File usage The following page links to this file: Whiskey Flats Geothermal Area

202

Enforcement Letter -Rocky Flats-08/02/2000  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

, 2000 , 2000 Mr. Robert G. Card [ ] Kaiser-Hill Company, L.L.C. Rocky Flats Environmental Technology Site 10808 Highway 93, Unit B Golden, CO 80403-8200 Subject: Enforcement Letter Dear Mr. Card: This letter refers to the Department of Energy's (DOE) evaluation of potential noncompliances with the requirements of 10 CFR 830.120 (Quality Assurance Rule). The potential noncompliances involved inadequate implementation of work controls, specifically failure to perform required combustible gas surveillances. The failure to fully perform the required surveillances was identified by the contractor during a comprehensive Kaiser-Hill (KHLL) Implementation Validation Review (IVR) team verifying implementation of the Basis of Interim Operation (BIO) for Buildings 776 and

203

Enforcement Letter - Rocky Flats -07/20/1998  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

, 1998 , 1998 Mr. Robert G. Card [ ] Kaiser-Hill Company, L.L.C. Rocky Flats Environmental Technology Site P.O. Box 464 Golden, CO 80402-0464 Subject: Enforcement Letter Noncompliance Reports NTS-RFO--KHLL-SITEWIDE-1997-0006 NTS-RFO--KHLL-371OPS-1997-0002 NTS-RFO--KHLL-SITEWIDE-1997-0010 NTS-RFO--KHLL-SITEWIDE-1998-0001 Dear Mr. Card: This letter refers to the Department of Energy=s (DOE) evaluation of noncompliances reported in four Noncompliance Tracking System (NTS) entries, identified in the subject line above. The four NTS reports were submitted between September 24, 1997, and March 3, 1998. The reports identified potential noncompliances with requirements of 10 CFR 830.120 (Quality Assurance Rule) and 10 CFR 835 (Radiation Protection Rule). The Office of Enforcement and Investigation evaluated these NTS reports based on the

204

DOE - Office of Legacy Management -- Rocky Flats Petition  

NLE Websites -- All DOE Office Websites (Extended Search)

Petition Petition Rocky Flats Site, Colorado Site-Specific Uranium Standards Petition All documents are Adobe Acrobat files. pdf_icon U.S. Department of Energy's Proponent's Pre-Hearing Statement for Proposed Revisions to Segments 4a, 4b, and 5 of Big Dry Creek (Walnut and Woman Creeks) Regulation #38 (5 CCR 1002-38) Figure 1 Figure 2 Thermal Ionization Mass Spectrometry Uranium Results for November 2008 RFETS Waters Thermal Ionization Mass Spectrometry Uranium Results for September 2008 RFETS Waters Thermal Ionization Mass Spectrometry Uranium Results for October 2007 RFETS Waters Quantitative Evaluation of Mixture Components in RFETS Uranium Isotopic Analyses Proposed Notice Petition for Rulemaking Regarding Site-Specific Uranium Standards Rulemaking Petition Water Monitoring Locations

205

System Advisor Model: Flat Plate Photovoltaic Performance Modeling Validation Report  

SciTech Connect

The System Advisor Model (SAM) is a free software tool that performs detailed analysis of both system performance and system financing for a variety of renewable energy technologies. This report provides detailed validation of the SAM flat plate photovoltaic performance model by comparing SAM-modeled PV system generation data to actual measured production data for nine PV systems ranging from 75 kW to greater than 25 MW in size. The results show strong agreement between SAM predictions and field data, with annualized prediction error below 3% for all fixed tilt cases and below 8% for all one axis tracked cases. The analysis concludes that snow cover and system outages are the primary sources of disagreement, and other deviations resulting from seasonal biases in the irradiation models and one axis tracking issues are discussed in detail.

Freeman, J.; Whitmore, J.; Kaffine, L.; Blair, N.; Dobos, A. P.

2013-12-01T23:59:59.000Z

206

Sitewide risk perspectives for the Rocky Flats Environmental Technology Site  

SciTech Connect

The US Department of Energy (DOE) has recently finalized a closure plan (originally called the Ten Year Plan) for closure and environmental cleanup of previous nuclear weapons facilities. The DOE Rocky Flats Field Office has established priorities for risk reduction work to Support closure activities, as well as addressing those hazards associated with storage and management of radioactive materials and hazardous chemicals. To provide information for future National Environmental Policy Act (NEPA) or other regulatory assessments of specific risk reduction projects identified in the Closure Plan, a risk assessment of normal operations and potential accidents was recently prepared to provide an updated baseline of the cumulative impacts to the worker, public and environment due to the Site`s operations, activities, and environmental conditions in light of the Site`s change in mission, and of future closure projects. This paper summarizes the risk assessment approach, results, and conclusions.

Olinger, S.J. [Dept. of Energy, Golden, CO (United States). Rocky Flats Field Office; Foppe, T.L. [M.H. Chew and Associates, Inc., Golden, CO (United States)

1998-05-01T23:59:59.000Z

207

Analysis of offsite Emergency Planning Zones for Rocky Flats Plant  

SciTech Connect

The purpose of this quality assurance program was to ensure the quality and technical adequacy of Phase 2 of the Analysis of Offsite Emergency Planning Zones (EPZ) for the Rocky Flats Plant project. Quality assurance was accomplished by managing and controlling the processes in the development of the product. The quality assurance task team conducted audits, reviews, and surveillances of project and related activities. This process contributed to identifying areas where the quality assurance plan was not fully implemented, areas needing improvement, and/or corrective actions resulting in a improved product. During the reviews and audits, several key areas were identified where quality assurance plan implementation needed to be improved. These areas included maintaining adequate documentation, reviewing technical results, making inputs traceable to technical results, and understanding that all personnel are responsible for quality.

Inger, J.R. (TENERA, L.P., Knoxville, TN (United States)); Brown-Strattan, M.A. (EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant)

1991-01-01T23:59:59.000Z

208

Criticality safety management during the new mission at Rocky Flats  

SciTech Connect

Under the cleanup and waste management missions at the former United States Department of Energy (DOE) production sites, a redirection of nuclear criticality safety programs has to take place to accommodate new objectives and reduced resources. The Rocky Flats Environmental Technology Site (RFETS) provides innovative approaches to respond to the needs of its new mission. The paper provides some background on the changes in the DOE complex and expands on the steps undertaken at RFETS with the hope that some of the novel approaches could be of use at other facilities. With the demise of the Cold War, the United States Department of Energy weapons complex has transitioned from the production of nuclear material to the disposition of weapons and cleanup of former production sites. Fissionable material in stored waste, contaminated facilities and equipment, and left over inventories presents nuclear criticality safety challenges that requires careful management.

Toffer, H.; Wilson, R.E. [Safe Sites of Colorado, Golden, CO (United States)

1996-12-31T23:59:59.000Z

209

Property:FlatDemandStructure | Open Energy Information  

Open Energy Info (EERE)

Property Property Edit with form History Facebook icon Twitter icon » Property:FlatDemandStructure Jump to: navigation, search This is a property of type Page. Pages using the property "FlatDemandStructure" Showing 25 pages using this property. (previous 25) (next 25) 0 0000827d-84d0-453d-b659-b86869323897 + 0000827d-84d0-453d-b659-b86869323897 + 000e60f7-120d-48ab-a1f9-9c195329c628 + 000e60f7-120d-48ab-a1f9-9c195329c628 + 00101108-073b-4503-9cd4-01769611c26f + 00101108-073b-4503-9cd4-01769611c26f + 001361ca-50d2-49bc-b331-08755a2c7c7d + 001361ca-50d2-49bc-b331-08755a2c7c7d + 0016f771-cda9-4312-afc2-63f10c8d8bf5 + 0016f771-cda9-4312-afc2-63f10c8d8bf5 + 00178d3d-17cb-46ed-8a58-24c816ddce96 + 00178d3d-17cb-46ed-8a58-24c816ddce96 + 001d1952-955c-411b-8ce4-3d146852a75e + 001d1952-955c-411b-8ce4-3d146852a75e +

210

Near-field modeling in Frenchman Flat, Nevada Test Site  

SciTech Connect

The US Department of Energy (DOE) is investigating the effects of nuclear testing in underground test areas (the UGTA program) at the Nevada Test Site. The principal focus of the UGTA program is to better understand and define subsurface radionuclide migration. The study described in this report focuses on the development of tools for generating maps of hydrogeologic characteristics of subsurface Tertiary volcanic units at the Frenchman Flat corrective Action Unit (CAU). The process includes three steps. The first step involves generation of three-dimensional maps of the geologic structure of subsurface volcanic units using geophysical logs to distinguish between two classes: densely welded tuff and nonwelded tuff. The second step generates three-dimensional maps of hydraulic conductivity utilizing the spatial distribution of the two geologic classes obtained in the first step. Each class is described by a correlation structure based on existing data on hydraulic conductivity, and conditioned on the generated spatial location of each class. The final step demonstrates the use of the maps of hydraulic conductivity for modeling groundwater flow and radionuclide transport in volcanic tuffs from an underground nuclear test at the Frenchman Flat CAU. The results indicate that the majority of groundwater flow through the volcanic section occurs through zones of densely welded tuff where connected fractures provide the transport pathway. Migration rates range between near zero to approximately four m/yr, with a mean rate of 0.68 m/yr. This report presents the results of work under the FY96 Near-Field Modeling task of the UGTA program.

Pohlmann, K.; Shirley, C.; Andricevic, R.

1996-12-01T23:59:59.000Z

211

Hydraulic model analysis of water distribution system, Rockwell International, Rocky Flats, Colorado  

SciTech Connect

Rockwell International requested an analysis of the existing plant site water supply distribution system at Rocky Flats, Colorado, to determine its adequacy. On September 26--29, 1988, Hughes Associates, Inc., Fire Protection Engineers, accompanied by Rocky Flats Fire Department engineers and suppression personnel, conducted water flow tests at the Rocky Flats plant site. Thirty-seven flows from various points throughout the plant site were taken on the existing domestic supply/fire main installation to assure comprehensive and thorough representation of the Rocky Flats water distribution system capability. The analysis was completed in four phases which are described, together with a summary of general conclusions and recommendations.

Perstein, J.; Castellano, J.A. [Hughes Associates, Inc., Wheaton, MD (United States)

1989-01-20T23:59:59.000Z

212

The effect of a small creek valley on drainage flows in the Rocky Flats region  

SciTech Connect

Regional scale circulation and mountain-plain interactions and effects on boundary layer development are important for understanding the fate of an atmospheric release from Rocky Flats, Colorado. Numerical modeling of Front Range topographic effects near Rocky Flats have shown that though the Front Range dominates large scale flow features, small-scale terrain features near Rocky Flats are important to local transport during nighttime drainage flow conditions. Rocky Flats has been the focus of interest for the Department of Energy`s Atmospheric Studies in Complex Terrain (ASCOT) program.

Porch, W. [Los Alamos National Lab., NM (United States)

1996-12-31T23:59:59.000Z

213

Rockwell International's Nuclear Criticality Safety Program at the Rocky Flats Plant  

SciTech Connect

This paper describes the criticality safety program at the Rocky Flats Plant. The groups responsible for safety are named and their functions outlined. (JDH)

McCarthy, J.D.

1987-01-01T23:59:59.000Z

214

E-Print Network 3.0 - amorphous selenium flat-panel Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

films with near-single-crystalline quality and high carrier mobility Summary: , such as solar cells and flat-panel displays, our ACSi technology promises to fundamentally...

215

E-Print Network 3.0 - amorphous silicon flat-panel Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

with the low cost of amorphous and polycrystalline silicon films on non... , such as solar cells and flat-panel displays, our ACSi technology promises to fundamentally...

216

Axisymmetric equilibrium models for magnetized neutron stars in General Relativity under the Conformally Flat Condition  

E-Print Network (OSTI)

Extremely magnetized neutron stars with magnetic fields as strong as $\\sim 10^{15-16}$ G, or magnetars, have received considerable attention in the last decade due to their identification as a plausible source for Soft Gamma Repeaters and Anomalous X-ray Pulsars. Moreover, this class of compact objects has been proposed as a possible engine capable of powering both Long and Short Gamma-Ray Bursts, if the rotation period in their formation stage is short enough (~1 ms). Such strong fields are expected to induce substantial deformations of the star and thus to produce the emission of gravitational waves. Here we investigate, by means of numerical modeling, axisymmetric static equilibria of polytropic and strongly magnetized stars in full general relativity, within the ideal magneto-hydrodynamic regime. The eXtended Conformally Flat Condition (XCFC) for the metric is assumed, allowing us to employ the techniques introduced for the X-ECHO code [Bucciantini & Del Zanna, 2011, Astron. Astrophys. 528, A101], pro...

Pili, A G; Del Zanna, L

2014-01-01T23:59:59.000Z

217

Investigation of the flow field inside flat-plate collector tube using PIV technique  

SciTech Connect

The thermofluid process inside the tube of flat-plate collectors is complex because the non-uniform heating of the tube results in the formation of stably and unstably stratified layers of fluid that interact with each other. The measurement and investigation of the flow behaviour inside the collector tube is very challenging. We report on a novel application of the particle image velocimetry (PIV) technique to remotely measure the velocity field inside the collector tube. The two-dimensional velocity fields were measured in the midplane of a collector tube for the Reynolds number range of 150-900 at unheated and four different heating conditions. We have presented and discussed in detail the technique implementation and the associated challenges. The results have shown that the collector heating significantly alters the structure and magnitude of the mean velocity field and influences the heat transfer to the fluid. It is observed that the collector heating causes a significant asymmetry in the mean velocity profiles over the given range of Reynolds numbers and heating conditions. (author)

Sookdeo, Steven [Department of Mechanical and Industrial Engineering, Concordia University, Montreal (Canada); Siddiqui, Kamran [Department of Mechanical and Industrial Engineering, Concordia University, Montreal (Canada); Department of Mechanical and Materials Engineering, University of Western Ontario, London (Canada)

2010-06-15T23:59:59.000Z

218

Convective Heat Transfer from Exposed Flat Horizontal Surface in Outdoorconditions at Low Wind Speeds: An Application to Flat Plate Solar Collector  

Science Journals Connector (OSTI)

Estimation of various heat losses in flat plate solar collectors is important for their thermal performance evaluation under different operating conditions. Upward heat losses have a major contribution in the ...

Suresh Kumar; S. C. Mullick

2009-01-01T23:59:59.000Z

219

Performance of a high fill factor, indirect detection prototype flat-panel imager for mammography  

SciTech Connect

Empirical and theoretical investigations of the performance of a small-area, high-spatial-resolution, active matrix flat-panel imager, operated under mammographic conditions, is reported. The imager is based on an indirect detection array incorporating a continuous photodiode design, as opposed to the discrete photodiode design employed in conventional flat-panel imagers. Continuous photodiodes offer the prospect of higher fill factors, particularly for arrays with pixel pitches below {approx}100 {mu}m. The array has a pixel-to-pixel pitch of 75 {mu}m and a pixel format of 512x512, resulting in an active area of {approx}3.8x3.8 cm{sup 2}. The array was coupled to two commercially available, structured CsI:Tl scintillators of {approx}150 {mu}m thickness: one optimized for high light output (FOS-HL) and the other for high spatial resolution (FOS-HR), resulting in a pair of imager configurations. Measurements of sensitivity, modulation transfer function (MTF), noise power spectra (NPS), and detective quantum efficiency (DQE) were performed with a 26 kVp mammography beam at exposures ranging from {approx}0.5 to {approx}19 mR. MTF results from both CsI:Tl scintillators show that the array demonstrates good spatial resolution, indicating effective isolation between adjacent pixels. The effect of additive noise of the system on DQE was observed to be significantly higher for the FOS-HR scintillator compared to the FOS-HL scintillator due to lower sensitivity of the former. For the FOS-HL scintillator, DQE performance was generally high at high exposures, limited by the x-ray quantum efficiency, Swank factor and the MTF of the scintillators. For both scintillators, the DQE performance degrades at lower exposures due to the relatively large contribution of additive noise. Theoretical calculations based on a cascaded systems model were found to be in general agreement with the empirically determined NPS and DQE values. Finally, such calculations were used to predict potential DQE performance for hypothetical 50 {mu}m pixel pitch imagers, employing similar continuous photodiode design and realistic inputs derived from the empirical measurements.

El-Mohri, Youcef; Antonuk, Larry E.; Zhao Qihua; Wang Yi; Li Yixin; Du Hong; Sawant, Amit [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan 48109 (United States)

2007-01-15T23:59:59.000Z

220

Late Quaternary geomorphology and soils in Crater Flat, Yucca Mountain area, southern Nevada  

E-Print Network (OSTI)

Late Quaternary geomorphology and soils in Crater Flat, Yucca Mountain area, southern Nevada for a Crater Flat cation-leaching curve. This curve differs somewhat from a previous Yucca Mountain curve­10 from a previous ``surficial deposits'' stratigraphy used in the Yucca Mountain area. Although

Dorn, Ron

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Self-Assembly of Flat Micro Components by Capillary Forces and Shape Recognition  

E-Print Network (OSTI)

Self-Assembly of Flat Micro Components by Capillary Forces and Shape Recognition J. Fang, S. Liang, K. Wang, X. Xiong, K. F. Böhringer* This paper summarizes our recent reports on self-assembly of flat micro components based on two major mechanisms: capillary-driven self-assembly and feature

222

Preliminary surficial geologic map of the Rocky Flats Plant and vicinity, Jefferson and Boulder Counties, Colorado  

SciTech Connect

This report contains a 1:6000 scale map of the 3-mile by 4-mile rectangular area surrounding the Rocky Flats Plant. The map shows the surface deposits estimated to be at least one meter thick. The accompanying report contains a detailed description of the map units, a discussion of the Rocky Flats alluvium and landslides, and cited references. 37 references.

Shroba, R.R.; Carrara, P.E.

1994-11-01T23:59:59.000Z

223

Relation of Flat Subduction to Magmatism and Deformation in the Western USA  

E-Print Network (OSTI)

Relation of Flat Subduction to Magmatism and Deformation in the Western USA Eugene Humphreys Department of Geological Sciences, University of Oregon, Eugene, Oregon, USA ABSTRACT Flat subduction of the Farallon plate beneath western USA during the Laramide orogeny was caused by the combined effects

Humphreys, Eugene

224

Universe Evolution in a 5D Ricci-flat Cosmology  

E-Print Network (OSTI)

We use Wetterich's parameterization equation of state (EOS) of dark energy to a $5D$ Ricci-flat cosmological solution and we suppose the universe contains three major components: matter, radiation and dark energy. By using the relation between the scale factor and the redshift $z$, we show that the two arbitrary functions contained in the $5D$ solution could be solved out analytically in terms of the variable $z$. Thus the whole $5D$ solution could be constructed uniquely if the current values of the three density parameters $\\Omega_{m0}$, ${\\Omega_{r0}}$, $\\Omega_{x0}$, the EOS $w_{0}$%, and the bending parameter $b$ contained in the EOS are all known. Furthermore, we find that all the evolutions of the mass density $\\Omega_{m} $, the radiation density ${\\Omega_{r}}$, the dark energy density $\\Omega_{x}$, and the deceleration parameter $q$ depend on the bending parameter $b$ sensitively. Therefore it is deserved to study observational constraints on the bending parameter $b$.

Chengwu Zhang; Hongya Liu; Lixin Xu; P. S. Wesson

2006-03-02T23:59:59.000Z

225

Environmental Survey preliminary report, Rocky Flats Plant, Golden, Colorado  

SciTech Connect

This report presents the preliminary findings of the Environmental Survey of the United States Department of Energy (DOE), Rocky Flats Plant (RFP), conducted August 11 through 22, 1986. The Survey is being conducted by an multidisciplinary team of environmental specialists, led and managed by the Office of Environment, Safety and Health's Office of Environmental Audit. Individual team members are outside experts supplied by a private contractor. The objective of the Survey is to identify environmental problems and areas of environmental risk associated with the RFP. The Survey covers all environmental media and all areas of environmental regulations. It is being performed in accordance with the DOE Environmental Survey Manual. The on-site phase of the Survey involves the review of existing site environmental data observations of the operations carried on at RFP, and interviews with site personnel. The Survey team developed a Sampling and Analysis Plan to assist in further assessing certain environmental problems identified during its on-site activates. The Sampling and Analysis Plan is being executed by DOE's Oak Ridge National Laboratory. When completed, the results will be incorporated into the RFP Environmental Survey Interim Report. The Interim Report will reflect the final determinations of the RFP Survey. 75 refs., 24 figs., 33 tabs.

Not Available

1987-06-01T23:59:59.000Z

226

Washing of Rocky Flats Combustible Residues (Conducted March - May 1995)  

SciTech Connect

The scope of this project is to determine the feasibility of washing plutonium-containing combustible residues using ultrasonic disruption as a method for dislodging particulate. Removal of plutonium particulate and, to a lesser extent, solubilized plutonium from the organic substrate should substantially reduce potential fire, explosion or radioactive release hazards due to radiolytic hydrogen generation or high flammability. Tests were conducted on polypropylene filters which were used as pre-filters in the rich-residue ion-exchange process at the Los Alamos Plutonium Facility. These filters are similar to the Ful-Flo{reg_sign} cartridges used at Rocky Flats that make up a substantial fraction of the combustible residues with the highest hazard rating. Batch experiments were run on crushed filter material in order to determine the amount of Pu removed by stirring, stirring and sonication, and stirring and sonication with the introduction of Pu-chelating water-soluble polymers or surfactants. Significantly more Pu is removed using sonication and sonication with chelators than is removed with mechanical stirring alone.

Mary E. Barr; Ann R. Schake; David A. Romero; Gordon D. Jarvinen

1999-03-01T23:59:59.000Z

227

Dendrogeomorphic approach to estimating slope retreat, Maxey Flats, Kentucky  

SciTech Connect

A dendrogeomorphic study of slope retreat was conducted at the Maxey Flats nuclear-waste disposal site in northeastern Kentucky. Tree roots exposed by surface lowering were used as an indicator of ground surface at the time of germination. The amount of lowering was measured and divided by tree-ring-determined tree age. Surface lowering and slope degradation rates were estimated for three slopes below waste-burial trenches and compared with data obtained from sediment troughs and erosion frames at the site. Mean rates of slope retreat ranged from 1.92 to 3.16 mm/yr. Sediment-trough results are two to three orders of magnitude less than dendrogeomorphic and erosion-frame estimates of slope degradation, which suggests that piping and solution-weathering processes may be important in slope degradation. Slope aspect and declivity may be important factors affecting retreat of slopes with a uniform lithology. Dendrogeomorphic techniques provide results comparable to those in the literature and offer a rapid method for estimating slope retreat that integrates slope processes over many years.

Hupp, C.R. (Geological Survey, Reston, VA (USA)); Carey, W.P. (Geological Survey, Lakewood, CO (USA))

1990-07-01T23:59:59.000Z

228

Thermal Load based Adaptive Tracking for Flat Plate Solar Collectors  

Science Journals Connector (OSTI)

Abstract The energy output of solar-thermal systems using flat plate collectors can be improved by tracking. Tracking is well known as a path for increasing the amount of solar radiation received by the collector; additionally the paper proposes a new concept that considers the inverse tracking as a viable option for protecting the collectors against overheating. An analysis of the thermal energy output and conversion efficiency is done considering forward tracking in three different days with different radiation profile (cloudy, sunny and mixed days), followed by an analysis of the inverse tracking concept. The in-field data show that there is a limiting angle below which inverse tracking is not effective and this value is estimated at 40° as compared with the optimal orientation. A logical scheme is proposed based on four different programs for forward tracking, inverse tracking, maximum inverse tracking or fixing the collector; this decisional scheme covers a broad range of functional situations having as central concept the production of thermal energy only when needed, for satisfying the demand, decreasing the energy consumption for forced circulation and supporting the systems reliability and safety.

Mircea Neagoe; Ion Visa; Bogdan G. Burduhos; Macedon D. Moldovan

2014-01-01T23:59:59.000Z

229

DISPOSITION PATHS FOR ROCKY FLATS GLOVEBOXES: EVALUATING OPTIONS  

SciTech Connect

The Kaiser-Hill Company, LLC has the responsibility for closure activities at the Rocky Flats Environmental Technology Site (RFETS). One of the challenges faced for closure is the disposition of radiologically contaminated gloveboxes. Evaluation of the disposition options for gloveboxes included a detailed analysis of available treatment capabilities, disposal facilities, and lifecycle costs. The Kaiser-Hill Company, LLC followed several processes in determining how the gloveboxes would be managed for disposition. Currently, multiple disposition paths have been chosen to accommodate the needs of the varying styles and conditions of the gloveboxes, meet the needs of the decommissioning team, and to best manage lifecycle costs. Several challenges associated with developing a disposition path that addresses both the radiological and RCRA concerns as well as offering the most cost-effective solution were encountered. These challenges included meeting the radiological waste acceptance criteria of available disposal facilities, making a RCRA determination, evaluating treatment options and costs, addressing void requirements associated with disposal, and identifying packaging and transportation options. The varying disposal facility requirements affected disposition choices. Facility conditions that impacted decisions included radiological and chemical waste acceptance criteria, physical requirements, and measurement for payment options. The facility requirements also impacted onsite activities including management strategies, decontamination activities, and life-cycle cost.

Lobdell, D.; Geimer, R.; Larsen, P.; Loveland, K.

2003-02-27T23:59:59.000Z

230

Risk-Quantified Decision-Making at Rocky Flats  

SciTech Connect

Surface soils in the 903 Pad Lip Area of the Rocky Flats Environmental Technology Site (RFETS) were contaminated with {sup 239/240}Pu by site operations. To meet remediation goals, accurate definition of areas where {sup 239/240}Pu activity exceeded the threshold level of 50 pCi/g and those below 50- pCi/g needed definition. In addition, the confidence for remedial decisions needed to be quantified and displayed visually. Remedial objectives needed to achieve a 90 percent certainty that unremediated soils had less than a 10 percent chance of {sup 239/240}Pu activity exceeding 50-pCi/g. Removing areas where the chance of exceedance is greater than 10 percent creates a 90 percent confidence in the remedial effort results. To achieve the stipulated goals, the geostatistical approach of probability kriging (Myers 1997) was implemented. Lessons learnt: Geostatistical techniques provided a risk-quantified approach to remedial decision-making and provided visualizations of the excavation area. Error analysis demonstrated compliance and confirmed that more than sufficient soils were removed. Error analysis also illustrated that any soils above the threshold that were not removed would be of nominal activity. These quantitative approaches were useful from a regulatory, engineering, and stakeholder satisfaction perspective.

Myers, Jeffrey C. [Washington Safety Management Solutions, Aiken, South Carolina (United States)

2008-01-15T23:59:59.000Z

231

Seismic equipment qualification at Rocky Flats Plant: Lessons learned  

SciTech Connect

Seismic equipment qualification is being evaluated as a part of the Systematic Evaluation Program (SEP) at Rocky Flats Plant (RFP). Initially it was believed that the experience database developed by the Seismic Qualification Utility Group (SQUG) for commercial nuclear power plants, as outlined in their Generic Implementation Procedure (GIP), would provide a substantial benefit for the seismic adequacy verification of equipment at RFP. However, further review of the simplified guidelines contained in the GIP with respect to the specific RFP structures and components revealed substantial differences from the GIP criteria. Therefore, the number of ``outliers`` from the experience database defined in the GIP is greater than was initially anticipated. This paper presents details of the differences found between the RFP structures and components and those represented in the GIP, and the challenges presented for their evaluation at RFP. Approaches necessary to develop seismic verification data are also discussed. The discussions focus on experience with one of the nuclear facilities at RFP, Building 707. However, the conclusions are generally applicable to other similar facilities that typically comprise the RFP nuclear facilities.

Peregoy, W.; Herring, K.

1993-08-01T23:59:59.000Z

232

DOE Certifies Rocky Flats Cleanup "Complete" | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Certifies Rocky Flats Cleanup "Complete" Certifies Rocky Flats Cleanup "Complete" DOE Certifies Rocky Flats Cleanup "Complete" December 8, 2005 - 4:45pm Addthis Golden, CO - Deputy Secretary of Energy Clay Sell announced today that the environmental cleanup of the former Rocky Flats site has been certified complete by the U.S. Department of Energy. Certification marks the final step in the DOE's successful effort to clean up and eventually turn over the former weapons production site for use as a National Wildlife Refuge. "With today's announcement, the cleanup chapter of Rocky Flats' history is closed, while another equally important chapter is just being opened," said Deputy Secretary Sell. "This successful cleanup represents a triumph of determination and spirit of cooperation that stands as an example for

233

DOE's Rocky Flats Cleanup Site Named 2006 Project of the Year By Project  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE's Rocky Flats Cleanup Site Named 2006 Project of the Year By DOE's Rocky Flats Cleanup Site Named 2006 Project of the Year By Project Management Institute DOE's Rocky Flats Cleanup Site Named 2006 Project of the Year By Project Management Institute October 23, 2006 - 9:17am Addthis WASHINGTON, DC - The U.S. Department of Energy (DOE) today announced that the Project Management Institute (PMI) has awarded its 2006 Project of the Year to DOE's Rocky Flats Environmental Technology Site. The award was presented to DOE contractor Kaiser-Hill, LLC during the PMI Global Congress Dinner 2006 on Saturday, October 21st, 2006 in Seattle, Washington. "It is a great honor for the Department of Energy's Rocky Flats safe cleanup and closure effort to be recognized with this prestigious award," James Rispoli, Assistant Secretary of Energy for Environmental

234

DOE's Rocky Flats Cleanup Site Named 2006 Project of the Year By Project  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE's Rocky Flats Cleanup Site Named 2006 Project of the Year By DOE's Rocky Flats Cleanup Site Named 2006 Project of the Year By Project Management Institute DOE's Rocky Flats Cleanup Site Named 2006 Project of the Year By Project Management Institute October 23, 2006 - 9:17am Addthis WASHINGTON, DC - The U.S. Department of Energy (DOE) today announced that the Project Management Institute (PMI) has awarded its 2006 Project of the Year to DOE's Rocky Flats Environmental Technology Site. The award was presented to DOE contractor Kaiser-Hill, LLC during the PMI Global Congress Dinner 2006 on Saturday, October 21st, 2006 in Seattle, Washington. "It is a great honor for the Department of Energy's Rocky Flats safe cleanup and closure effort to be recognized with this prestigious award," James Rispoli, Assistant Secretary of Energy for Environmental

235

Transportation of pyrochemical salts from Rocky Flats to Los Alamos  

SciTech Connect

Radioactive legacy wastes or residues are currently being stored on numerous Sites around the former Department of Energy`s (DOE) Nuclear Weapons Complex. Since most of the operating facilities were shut down and have not operated since before the declared end to the Cold War in 1993, the historical method for treating these residues no longer exists. The risk associated with continued storage of these residues will dramatically increase with time. Thus, the DOE was directed by the Defense Nuclear Facility Safety Board in its Recommendation 94-1 to address and stabilize these residues and established an eight year time frame for doing so. There are only two options available to respond to this requirement: (1) restart existing facilities to treat and package the residues for disposal or (2) transport the residues to another operating facility within the Complex where they can be treated and packaged for disposal. This paper focuses on one such residue type, pyrochemical salts, produced at one Complex site, the Rocky Flats Plant located northwest of Denver, Colorado. One option for treating the salts is their shipment to Los Alamos, New Mexico, for handling at the Plutonium Facility. The safe transportation of these salts can be accomplished at present with several shipping containers including a DOT 6M, a DOE 9968, Type A or Type B quantity 55-gallon drum overpacks, or even the TRUPACT II. The tradeoffs between each container is examined with the conclusion that none of the available shipping containers is fully satisfactory. Thus, the advantageous aspects of each container must be utilized in an integrated and efficient way to effectively manage the risk involved. 1 fig.

Schreiber, S.B.

1997-02-01T23:59:59.000Z

236

Interacting Ghost Dark Energy in Non-Flat Universe  

E-Print Network (OSTI)

A new dark energy model called "ghost dark energy" was recently suggested to explain the observed accelerating expansion of the universe. This model originates from the Veneziano ghost of QCD. The dark energy density is proportional to Hubble parameter, $\\rho_D=\\alpha H$, where $\\alpha$ is a constant of order $\\Lambda_{\\rm QCD}^3$ and $\\Lambda_{\\rm QCD}\\sim 100 MeV$ is QCD mass scale. In this paper, we extend the ghost dark energy model to the universe with spatial curvature in the presence of interaction between dark matter and dark energy. We study cosmological implications of this model in detail. In the absence of interaction the equation of state parameter of ghost dark energy is always $w_D > -1 $ and mimics a cosmological constant in the late time, while it is possible to have $w_D dark energy in flat universe are recovered. To check the observational consistency, we use Supernova type Ia (SNIa) Gold sample, shift parameter of Cosmic Microwave Background radiation (CMB) and the Baryonic Acoustic Oscillation peak from Sloan Digital Sky Survey (SDSS). The best fit values of free parameter at $1\\sigma$ confidence interval are: $\\Omega_m^0= 0.35^{+0.02}_{-0.03}$, $\\Omega_D^0=0.75_{-0.04}^{+0.01}$ and $b^2=0.08^{+0.03}_{-0.03}$. Consequently the total energy density of universe at present time in this model at 68% level equates to $\\Omega_{\\rm tot}^0=1.10^{+0.02}_{-0.05}$.

A. Sheykhi; M. Sadegh Movahed

2011-04-25T23:59:59.000Z

237

Technical safety appraisal: Buildings 776/777 Rocky Flats Plant  

SciTech Connect

Buildings 776/777 at the Rocky Flats Plant are major components of the production complex at the plant site. They have been in operation since 1957. The operations taking place in the buildings are nuclear weapons production support, processing of weapons assemblies returned from Pantex, waste processing, research and development in support of production, special projects, and those generated by support groups, such as maintenance. The appraisal team identified nine deficiencies that it believed required prompt attention. DOE management for EH, the program office (Defense Programs), and the field office analyzed the information provided by the appraisal team and instituted compensatory measures for closer monitoring of contractor activities by knowledgeable DOE staff and staff from other sites. Concurrently, the contractor was requested to address both short-term and long-term remedial measures to correct the identified issues as well as the underlying problems. The contractor has provided his action plan, which is included. This plan was under evaluation by EH and the DOE program office at the time this report was prepared. In addressing the major areas of concern identified above, a well as the specific deficiencies identified by the appraisal team, the contractor and the field office are cautioned to search for the root causes for the problems and to direct corrective actions to those root causes rather than solely to the symptoms to assure the sustainability of the improvements being made. The results of prior TSAs led DOE to conclude that previous corrective actions were not sufficient in that a large number of the individual findings are recurrent. Pending completion of remedial actions over the next few months, enhanced DOE oversight of the contractor is warranted.

Field, H C

1988-03-01T23:59:59.000Z

238

Evaluation of Groundwater Movement in the Frenchman Flat CAU Using Geochemical and Isotopic Analysis  

SciTech Connect

The principal pathway for radionuclide migration from underground tests in Frenchman Flat, on the Nevada Test Site, to the accessible environment is groundwater flow. Two potential pathways for radionuclide transport via groundwater have been identified from hydrologic data: (1) radionuclide transport downward from the alluvial and volcanic aquifers into the underlying carbonate aquifer; and (2) radionuclide transport laterally to the carbonate aquifer surrounding Frenchman Flat. This report presents an evaluation of geochemical and environmental isotopic data to test these potential pathways and to identify other groundwater flowpaths in, and out of, Frenchman Flat.

R. Hershey; J. Thomas; T. Rose; J. Paces; I. Farnham; C. Benedict, Jr.

2005-03-01T23:59:59.000Z

239

The minimum-mass extrasolar nebula: in situ formation of close-in super-Earths  

Science Journals Connector (OSTI)

......Kepler-10b Kepler-10b is a rocky super-Earth of mass M...significant H component, but that its flat transmission spectrum arises...stars should lack close-in rocky super-Earths The in situ formation...concentrated with small k 2 0.05 A rocky planet with an extended H atmosphere......

Eugene Chiang; Gregory Laughlin

2013-01-01T23:59:59.000Z

240

Near-Edge X-ray Absorption Fine Structure Imaging of Spherical and Flat Counterfaces of Ultrananocrystalline Diamond Tribological Contacts: A Correlation of Surface Chemistry and Friction  

SciTech Connect

A recently installed synchrotron radiation near-edge X-ray absorption fine structure (NEXAFS) full field imaging electron spectrometer was used to spatially resolve the chemical changes of both counterfaces from an ultra-nanocrystalline diamond (UNCD) tribological contact. A silicon flat and Si{sub 3}N{sub 4} sphere were both coated with UNCD, and employed to form two wear tracks on the flat in a linear reciprocating tribometer. The first wear track was produced using a new, unconditioned sphere whose surface was thus conditioned during this first experiment. This led to faster run-in and lower friction when producing a second wear track using the conditioned sphere. The large depth of field of the magnetically guided NEXAFS imaging detector enabled rapid, large area spectromicroscopic imaging of both the spherical and flat surfaces. Laterally resolved NEXAFS data from the tribological contact area revealed that both substrates had an as-grown surface layer that contained a higher fraction of sp{sup 2}-bonded carbon and oxygen which was mechanically removed. Unlike the flat, the film on the sphere showed evidence of having graphitic character, both before and after sliding. These results show that the graphitic character of the sphere is not solely responsible for low friction and short run-in. Rather, conditioning the sphere, likely by removing asperities and passivating dangling bonds, leads to lower friction with less chemical modification of the substrate in subsequent tests. The new NEXAFS imaging spectroscopy detector enabled a more complete understanding of the tribological phenomena by imaging, for the first time, the surface chemistry of the spherical counterface which had been in continual contact during wear track formation.

A Konicek; C Jaye; M Hamilton; W Sawyer; D Fischer; R Carpick

2011-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Sub-crop geologic map of pre-Tertiary rocks in the Yucca Flat and northern Frenchman Flat areas, Nevada Test Site, southern Nevada  

SciTech Connect

This map displays interpreted structural and stratigraphic relations among the Paleozoic and older rocks of the Nevada Test Site region beneath the Miocene volcanic rocks and younger alluvium in the Yucca Flat and northern Frenchman Flat basins. These interpretations are based on a comprehensive examination and review of data for more than 77 drillholes that penetrated part of the pre-Tertiary basement beneath these post-middle Miocene structural basins. Biostratigraphic data from conodont fossils were newly obtained for 31 of these holes, and a thorough review of all prior microfossil paleontologic data is incorporated in the analysis. Subsurface relationships are interpreted in light of a revised regional geologic framework synthesized from detailed geologic mapping in the ranges surrounding Yucca Flat, from comprehensive stratigraphic studies in the region, and from additional detailed field studies on and around the Nevada Test Site. All available data indicate the subsurface geology of Yucca Flat is considerably more complicated than previous interpretations have suggested. The western part of the basin, in particular, is underlain by relics of the eastward-vergent Belted Range thrust system that are folded back toward the west and thrust by local, west-vergent contractional structures of the CP thrust system. Field evidence from the ranges surrounding the north end of Yucca Flat indicate that two significant strike-slip faults track southward beneath the post-middle Miocene basin fill, but their subsurface traces cannot be closely defined from the available evidence. In contrast, the eastern part of the Yucca Flat basin is interpreted to be underlain by a fairly simple north-trending, broad syncline in the pre-Tertiary units. Far fewer data are available for the northern Frenchman Flat basin, but regional analysis indicates the pre-Tertiary structure there should also be relatively simple and not affected by thrusting. This new interpretation has implications for ground water flow through pre-Tertiary rocks beneath the Yucca Flat and northern Frenchman Flat areas, and has consequences for ground water modeling and model validation. Our data indicate that the Mississippian Chainman Shale is not laterally extensive confining unit in the western part of the basin because it is folded back onto itself by the convergent structures of the Belted Range and CP thrust systems. Early and Middle Paleozoic limestone and dolomite are present beneath most of both basins and, regardless of structural complications, are interpreted to form a laterally continuous and extensive carbonate aquifer. Structural culmination that marks the French Peak accommodation zone along the topographic divide between the two basins provides a lateral pathway through highly fractured rock between the volcanic aquifers of Yucca Flat and the regional carbonate aquifer. This pathway may accelerate the migration of ground-water contaminants introduced by underground nuclear testing toward discharge areas beyond the Nevada Test Site boundaries. Predictive three-dimensional models of hydrostratigraphic units and ground-water flow in the pre-Tertiary rocks of subsurface Yucca Flat are likely to be unrealistic due to the extreme structural complexities. The interpretation of hydrologic and geochemical data obtained from monitoring wells will be difficult to extrapolate through the flow system until more is known about the continuity of hydrostratigraphic units. 1 plate

Cole, J.C.; Harris, A.G.; Wahl, R.R.

1997-10-02T23:59:59.000Z

242

VWZ-0008 - In the Matter of EG&G Rocky Flats, Inc. | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

VWZ-0008 - In the Matter of EG&G Rocky Flats, Inc. VWZ-0008 - In the Matter of EG&G Rocky Flats, Inc. VWZ-0008 - In the Matter of EG&G Rocky Flats, Inc. This decision will consider a Motion for Partial Dismissal and Limitation on Scope of Complainant's Claims filed by EG&G Rocky Flats, Inc. (EG&G) on June 13, 1997. In its motion, EG&G seeks partial dismissal of the underlying complaint and hearing request filed by Arthur Murfin (Murfin) under the Department of Energy's (DOE) Contractor Employee Protection Program, 10 C.F.R. Part 708. Murfin's request for a hearing under 10 C.F.R. § 708.9 was filed on January 27, 1997, and it has been assigned Office of Hearings and Appeals (OHA) Case No. VWA-0016. vwz0008.pdf More Documents & Publications LWA-0010 - In the Matter of Howard W. Spaletta

243

2-M Probe At Gabbs Alkali Flat Area (Kratt, Et Al., 2008) | Open Energy  

Open Energy Info (EERE)

2-M Probe At Gabbs Alkali Flat Area (Kratt, Et Al., 2008) 2-M Probe At Gabbs Alkali Flat Area (Kratt, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: 2-M Probe At Gabbs Alkali Flat Area (Kratt, Et Al., 2008) Exploration Activity Details Location Gabbs Alkali Flat Area Exploration Technique 2-M Probe Activity Date Usefulness useful DOE-funding Unknown Notes More than 100 2-meter-deep temperature measurements were made during two separate surveys that took place in December 2007 and April 2008 (Figure 5). The area covered was 16 km in length parallel to the range front and a maximum of nearly 5 km out into the valley. The highest recorded temperature of 37°C was obtained approximately 100 m upslope from Rawhide hot springs. Near these springs, temperatures rapidly cool towards the

244

Numerical Analysis of Fluid Flow and Heat Transfer within Grooved Flat Mini Heat Pipes  

Science Journals Connector (OSTI)

A Theoretical study is carried out in order to verify the Mini Heat Pipe (MHP) concept for cooling high ... as an integrated part of a Flat Mini Heat Pipe (FMHP). Hence, a detailed ... with axial microchannels is...

Jed Mansouri; Samah Maalej; Mohamed Sassi…

2013-01-01T23:59:59.000Z

245

Investigation of the fluid temperature field inside a flat-plate solar collector  

Science Journals Connector (OSTI)

An experimental study was conducted to investigate fluid temperature fields inside a flat-plate solar collector tube. The results show the highest fluid ... tube, whereas, the temperature field in the horizontal ...

Gurveer Sandhu; Kamran Siddiqui

2014-11-01T23:59:59.000Z

246

E-Print Network 3.0 - atomically flat gold Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

of micron-sized wires, fabricated lithographically on a flat... 12;456 Fabrication of micro-magnetic traps for cold neutral atoms 1 m of gold is reasonable... -magnetic traps...

247

Experimental Investigations of Vortex Induced Vibration of A Flat Plate in Pitch Oscillation  

E-Print Network (OSTI)

A bluff structure placed in a flowing fluid, may be subjected to vortex-induced vibrations (VIV). For a flat plate with only rotational degree of freedom, the VIV is rotational oscillation. Based on the experimental investigation, vortex...

Yang, Yi

2012-02-14T23:59:59.000Z

248

E-Print Network 3.0 - amorphous silicon flat Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Cells n Sensors n Flat Panels n IC Circuits... and low-performance, low-cost amorphous film solar cells. n Potential for high ... Source: Los Alamos National Laboratory,...

249

Preliminary Notice of Violation, Rocky Flats Environmental Technology Site- EA-96-05  

Energy.gov (U.S. Department of Energy (DOE))

Preliminary Notice of Violation issued to Safe Sites of Colorado related to Radiological and Work Control Deficiencies associated with Two Radiological Release Events at the Rocky Flats Environmental Technology Site, (EA-96-05)

250

Multi-objective genetic algorithm for the optimization of a flat-plate solar thermal collector  

Science Journals Connector (OSTI)

We present a multi-objective genetic algorithm we developed for the optimization of a flat-plate solar thermal collector. This collector consists of a waffle-shaped Al substrate with...

Mayer, Alexandre; Gaouyat, Lucie; Nicolay, Delphine; Carletti, Timoteo; Deparis, Olivier

2014-01-01T23:59:59.000Z

251

Outdoor and Indoor Testing to Increase the Efficiency and Durability of Flat Plate Solar Thermal Collectors  

Science Journals Connector (OSTI)

This paper presents the test performed on the solar thermal flat plate collector and the effect of saline aerosol on the solar thermal conversion; an assembly of testing rigs developed ... presented; the rigs all...

Daniela Ciobanu; Ion Visa; Anca Duta…

2014-01-01T23:59:59.000Z

252

ORGANISM-SEDIMENT RELATIONSHIPS ON A MODERN TIDAL FLAT, BODEGA HARBOR, CALIFORNIA  

E-Print Network (OSTI)

ORGANISM-SEDIMENT RELATIONSHIPS ON A MODERN TIDAL FLAT, BODEGA HARBOR, CALIFORNIA Thomas E. Ronan r e d from prevailing northwesterly winds by a rocky peninsula, Bodega Head, and a beach and dune

Farmer, Jack D.

253

A Stochastic Advection-Diffusion Model for the Rocky Flats Soil Plutonium Data  

Science Journals Connector (OSTI)

An advection-diffusion equation with time and space dependent random coefficients is derived as a model for the plutonium concentration changes in the surface soil around the Rocky Flats Plant northwest of Denver...

Jaroslav Mohapl

2000-03-01T23:59:59.000Z

254

Comparison and evaluation of turbulence estimation schemes at Rocky Flats Plant  

SciTech Connect

The Rocky Flats Plant (RFP) routinely measures meteorological data to support Air Quality and Emergency Response activities. These data help to characterize the transport and dispersion of actual or potential airborne releases of radionuclides or other hazardous materials.

Bowen, B.M.; Pamp, S.E.

1993-10-01T23:59:59.000Z

255

Physicochemical Speciation of Americium in Soils from Rocky Flats, Colorado, USA  

Science Journals Connector (OSTI)

The objective of the research was to characterize the 241Am distribution in six operationally defined chemical and mineralogical phases of soil samples taken from the Rocky Flats Environmental Technology Site (RF...

S. A. Ibrahim; W. R. Salazar

2000-02-01T23:59:59.000Z

256

SIR: a simple indexing and retrieval system for biological flat file databases  

Science Journals Connector (OSTI)

......can be used to build a primary index. The flat file databank, SWISSPROT...shows the module that builds indices. Indexing SWISSPROT (release...deletion and length. After the completion of index building the system is ready for......

Chenna Ramu

2001-08-01T23:59:59.000Z

257

High-speed temporal characterization and visualization of spatial light modulators and flat-panel displays  

Science Journals Connector (OSTI)

An apparatus that can characterize and visualize temporal dynamics of spatial light modulators (SLM’s) and flat-panel displays is constructed and evaluated by use of a commercially...

Paek, Eung G; Wilson, C L; Roberts, J W; Watson, C I

1998-01-01T23:59:59.000Z

258

Theory for two dimensional electron emission between parallel flat electrodes  

SciTech Connect

The electron emission in space charge is limited for the case of a planar cathode; such emission is generated by using an approximation that models electric field formation by a dipole, which generates an oscillatory symmetrical density current j(x), minimum value is moved around the origin and calculated throughout the Poisson equation. Such value has been previously calculated based upon the already stated conditions for the two dimensional (2D) case. In our matter under study, it is stated that a symmetric oscillatory potential, namely, mu(x,y) is invariably generated; because of that the boundary conditions represented by both a barrier potential and a square potential will satisfy this potential as well. For the case of the square potential, it is taking into account either a potential is attractive or repulsive. In this study one of the principal problems is discussed. It is when the space charge creates a potential barrier that prohibits steady-state beam propagation. In this paper it is claimed to have found the boundary conditions that fully satisfy the potential, and the potential satisfies approximately the Poisson equation for the 2D case, and the electron emission is generated through a finite strip due to electrical dipole formation.

Torres-Cordoba, Rafael [Universidad Autonoma de Cd. Juarez, Av. Del Charro 450 Norte, Cd. Juarez, Chihuahua C.P. 32310 (Mexico)

2009-12-15T23:59:59.000Z

259

Idaho National Engineering Laboratory code assessment of the Rocky Flats transuranic waste  

SciTech Connect

This report is an assessment of the content codes associated with transuranic waste shipped from the Rocky Flats Plant in Golden, Colorado, to INEL. The primary objective of this document is to characterize and describe the transuranic wastes shipped to INEL from Rocky Flats by item description code (IDC). This information will aid INEL in determining if the waste meets the waste acceptance criteria (WAC) of the Waste Isolation Pilot Plant (WIPP). The waste covered by this content code assessment was shipped from Rocky Flats between 1985 and 1989. These years coincide with the dates for information available in the Rocky Flats Solid Waste Information Management System (SWIMS). The majority of waste shipped during this time was certified to the existing WIPP WAC. This waste is referred to as precertified waste. Reassessment of these precertified waste containers is necessary because of changes in the WIPP WAC. To accomplish this assessment, the analytical and process knowledge available on the various IDCs used at Rocky Flats were evaluated. Rocky Flats sources for this information include employee interviews, SWIMS, Transuranic Waste Certification Program, Transuranic Waste Inspection Procedure, Backlog Waste Baseline Books, WIPP Experimental Waste Characterization Program (headspace analysis), and other related documents, procedures, and programs. Summaries are provided of: (a) certification information, (b) waste description, (c) generation source, (d) recovery method, (e) waste packaging and handling information, (f) container preparation information, (g) assay information, (h) inspection information, (i) analytical data, and (j) RCRA characterization.

NONE

1995-07-01T23:59:59.000Z

260

Comparative risk analysis for the Rocky Flats Plant Integrated Project Planning  

SciTech Connect

The Rocky Flats Plant is developing a comprehensive planning strategy that will support transition of the Rocky Flats Plant from a nuclear weapons production facility to site cleanup and final disposition. Final disposition of the Rocky Flats Plant materials and contaminants requires consideration of the interrelated nature of sitewide problems, such as material movement and disposition, facility and land use endstates, costs, relative risks to workers and the public, and waste disposition. Comparative Risk Analysis employs both incremental risk and cumulative risk evaluations to compare risk from postulated options or endstates. Comparative Risk Analysis is an analytical tool for the Rocky Flats Plant Integrated Project Planning which can assist a decision-maker in evaluating relative risks among proposed remedial options or future endstates. It addresses the cumulative risks imposed by the Rocky Flats Plant and provides risk information, both human health and ecological, to aid in reducing unnecessary resource and monetary expenditures. Currently, there is no approved methodology that aggregates various risk estimates. Along with academic and field expert review, the Comparative Risk Analysis methodology is being reviewed and refined. A Rocky Flats Plant Risk Assessment Focus Group was established. Stakeholder involvement in the development provides an opportunity to influence the information delivered to a decision-maker. This paper discusses development of the methodology.

Jones, M.E. [EG& G Rocky Flats, Inc., Englewood, CO (United States); Shain, D.I. [EG& G Rocky Flats, Inc., Golden, CO (United States)

1994-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Analysis of offsite Emergency Planning Zones (EPZ) for the Rocky Flats Plant  

SciTech Connect

This project plan for Phase II summarizes the design of a project to complete analysis of offsite Emergency Planning Zones (EPZ) for the Rocky Flats Plant. Federal, state, and local governments develop emergency plans for facilities that may affect the public in the event of an accidental release of nuclear or hazardous materials. One of the purposes of these plans is to identify EPZs where actions might be necessary to protect public health. Public protective actions include sheltering, evacuation, and relocation. Agencies use EPZs to develop response plans and to determine needed resources. The State of Colorado, with support from the US Department of Energy (DOE) and Rocky Flats contractors, has developed emergency plans and EPZs for the Rocky Flats Plant periodically beginning in 1980. In Phase II, Interim Emergency Planning Zones Analysis, Maximum Credible Accident'' we will utilize the current Rocky Flats maximum credible accident (MCA), existing dispersion methodologies, and upgraded dosimetry methodologies to update the radiological EPZs. Additionally, we will develop recommendations for EPZs for nonradiological hazardous materials releases and evaluate potential surface water releases from the facility. This project will allow EG G Rocky Flats to meet current commitments to the state of Colorado and make steady, tangible improvements in our understanding of risk to offsite populations during potential emergencies at the Rocky Flats Plant. 8 refs., 5 figs., 4 tabs.

Hodgin, C.R.; Armstrong, C.; Daugherty, N.M.; Foppe, T.L.; Petrocchi, A.J.; Southward, B.

1990-05-01T23:59:59.000Z

262

Heat Transfer -2 A heat generating ( ) flat plate fuel element of thickness 2L is covered with flat plate steel cladding of  

E-Print Network (OSTI)

with flat plate steel cladding of thickness b. The heat generated is removed by a fluid at T, which adjoins on both sides On the sketch show regions where dT/dx is zero, constant and increasing. T , h x LL bb SteelSteel

Virginia Tech

263

The Inverted Block Rate:The Inverted Block Rate: An Alternative to Flat Rate BillingAn Alternative to Flat Rate Billing  

E-Print Network (OSTI)

The Inverted Block Rate:The Inverted Block Rate: An Alternative to Flat Rate BillingAn Alternative;Inverted Block RateInverted Block Rate 22 IntroductionIntroduction ·· Modern societies rely on electrical collectionMetering and Rate Models facilitate collection #12;Inverted Block RateInverted Block Rate 33 Rate

Hughes, Larry

264

Flat Plate PV Module Eligibility Listing Procedure Updated 6/2/14 Senate Bill 1 (SB1) defines the solar incentive programs for California, and flat plate PV  

E-Print Network (OSTI)

programs for investor owned utility (IOU) territories, the California Solar Initiative (CSI) and the New the solar incentive programs for California, and flat plate PV modules 1 must be listed on the SB1 Solar Homes Partnership (NSHP), as well as solar incentive programs administered by publicly owned

265

Phase II Documentation Overview of Corrective Action Unit 98: Frenchman Flat, Nevada Test Site, Nye County, Nevada, Revision 1  

SciTech Connect

The U.S. Department of Energy (DOE), National Nuclear Security Administration Nevada Site Office (NNSA/NSO) initiated the Underground Test Area (UGTA) Subproject to assess and evaluate radiologic groundwater contamination resulting from underground nuclear testing at the NTS. These activities are overseen by the Federal Facility Agreement and Consent Order (FFACO) (1996, as amended March 2010). For Frenchman Flat, the UGTA Subproject addresses media contaminated by the underground nuclear tests, which is limited to geologic formations within the saturated zone or 100 meters (m) or less above the water table. Transport in groundwater is judged to be the primary mechanism of migration for the subsurface contamination away from the Frenchman Flat underground nuclear tests. The intent of the UGTA Subproject is to assess the risk to the public from the groundwater contamination produced as a result of nuclear testing. The primary method used to assess this risk is the development of models of flow and contaminant transport to forecast the extent of potentially contaminated groundwater for the next 1,000 years, establish restrictions to groundwater usage, and implement a monitoring program to verify protectiveness. For the UGTA Subproject, contaminated groundwater is that which exceeds the radiological standards of the Safe Drinking Water Act (CFR, 2009) the State of Nevada’s groundwater quality standard to protect human health and the environment. Contaminant forecasts are expected to be uncertain, and groundwater monitoring will be used in combination with land-use control to build confidence in model results and reduce risk to the public. Modeling forecasts of contaminant transport will provide the basis for negotiating a compliance boundary for the Frenchman Flat Corrective Action Unit (CAU). This compliance boundary represents a regulatory-based distinction between groundwater contaminated or not contaminated by underground testing. Transport modeling simulations are used to compute radionuclide concentrations in time and space within the CAU for the 1,000-year contaminant boundary. These three-dimensional (3-D) concentration simulations are integrated into probabilistic forecasts of the likelihood of groundwater exceeding or remaining below the radiological standards of the Safe Drinking Water Act (CFR, 2009) defined as the contaminant boundary. Contaminant boundaries are not discrete predictions of the location or concentration of contaminants, but instead are spatial representations of the probability of exceeding Safe Drinking Water Act radiological standards. The forecasts provide planning tools to facilitate regulatory decisions designed to protect the health and safety of the public.

Greg Ruskauff

2010-04-01T23:59:59.000Z

266

Completion Report for the Well ER-6-2 Site Corrective Action Unit 97: Yucca Flat - Climax Mine  

SciTech Connect

Well ER-6-2 and its satellite hole, Well ER-6-2 No.1, were drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of the Nevada Environmental Restoration Project at the Nevada Test Site, Nye County, Nevada. Well ER-6-2 was drilled in two stages in 1993 and 1994; the satellite hole, Well ER-6-2 No.1 was drilled nearby in 1993 but was abandoned. The wells were drilled as part of a hydrogeologic investigation program for the Yucca Flat-Climax Mine Corrective Action Unit Number 97, in the northeastern portion of the Nevada Test Site. The wells are located in Yucca Flat, within Area 6 of the Nevada Test Site. The wells provided information regarding the radiological and hydrogeological environment in a potentially down-gradient position from tests conducted in northern and central Yucca Flat. Construction of Well ER-6-2 began with a 1.2-meter-diameter surface conductor hole, which was drilled and cased off to a depth of 30.8 meters below the surface. A 50.8-centimeter diameter surface hole was then rotary drilled to the depth of 578.5 meters and cased off to the depth of 530.4 meters. The hole diameter was then reduced to 27.0 centimeters, and the borehole was advanced to a temporary depth of 611.4 meters. The borehole was conventionally cored to a total depth of 1,045 meters with a diameter of 14.0 centimeters. Borehole sloughing required cementing and re-drilling of several zones. The open-hole completion accesses the lower carbonate aquifer, the CP thrust fault, and the upper clastic confining unit. A fluid level depth of 543.2 meters was most recently measured in the open borehole in September 2007. No radionuclides were encountered during drilling. The satellite hole Well ER-6-2 No.1 was drilled approximately 15.2 meters north of Well ER-6-2 on the same drill pad. This was planned to be used as an observation well during future hydrologic testing at Well ER-6-2; however, the satellite hole was abandoned at the depth of 399 meters due to stuck drill pipe, and was subsequently cemented to the surface. Detailed lithologic descriptions with stratigraphic assignments in this report are based on composite drill cuttings samples collected every 3 meters, cores taken between the depths of 619.3 and 1,042.4 meters, and geophysical log data. Stratigraphic assignments within the Paleozoic section are based on paleontological analyses. The well was collared in alluvium and at 30.8 meters penetrated Paleozoic carbonate rocks. These consisted of dolostone with minor shale and limestone of the Bonanza King Formation, and limestone with minor quartzite, sandstone, and dolostone assigned to the Guilmette Formation. The borehole reached total depth in a shale unit assigned to the Chainman Shale. The units below the Bonanza King Formation are overturned due to faulting and folding and, therefore, are stratigraphically upside-down.

NSTec Environmental Management

2008-03-01T23:59:59.000Z

267

The Angular Momentum Content and Evolution of Class I and Flat-Spectrum Protostars  

E-Print Network (OSTI)

We report on the angular momentum content of heavily embedded protostars based on our analysis of the projected rotation velocities (v sin i s) of 38 Class I/flat spectrum young stellar objects presented by Doppmann et al (2005). After correcting for projection effects, we find that infrared-selected Class I/flat spectrum objects rotate significantly more quickly (median equatorial rotation velocity ~ 38 km/sec) than Classical T Tauri stars (CTTSs; median equatorial rotation velocity ~ 18 km/sec) in the Rho Ophiuchi and Taurus-Aurigae regions. The detected difference in rotation speeds between Class I/flat spectrum sources and CTTSs proves difficult to explain without some mechanism which transfers angular momentum out of the protostar between the two phases. Assuming Class I/flat spectrum sources possess physical characteristics (M_*,R_*,B_*) typical of pre-main sequence stars, fully disk locked Class I objects should have co-rotation radii within their protostellar disks that match well (within 30%) with the predicted magnetic coupling radii of Shu et al (1994). The factor of two difference in rotation rates between Class I/flat spectrum and CTTS sources, when interpreted in the context of disk locking models, also imply a factor of 5 or greater difference in mass accretion rates between the two phases.

Kevin R. Covey; Thomas P. Greene; Greg W. Doppmann; Charles J. Lada

2005-02-23T23:59:59.000Z

268

Hanford/Rocky Flats collaboration on development of supercritical carbon dioxide extraction to treat mixed waste  

SciTech Connect

Proposals for demonstration work under the Department of Energy`s Mixed Waste Focus Area, during the 1996 through 1997 fiscal years included two applications of supercritical carbon dioxide to mixed waste pretreatment. These proposals included task RF15MW58 of Rocky Flats and task RL46MW59 of Hanford. Analysis of compatibilities in wastes and work scopes yielded an expectation of substantial collaboration between sites whereby Hanford waste streams may undergo demonstration testing at Rocky Flats, thereby eliminating the need for test facilities at Hanford. This form of collaboration is premised the continued deployment at Rocky Flats and the capability for Hanford samples to be treated at Rocky Flats. The recent creation of a thermal treatment contract for a facility near Hanford may alleviate the need to conduct organic extraction upon Rocky Flats wastes by providing a cost effective thermal treatment alternative, however, some waste streams at Hanford will continue to require organic extraction. Final site waste stream treatment locations are not within the scope of this document.

Hendrickson, D.W.; Biyani, R.K. [Westinghouse Hanford Co., Richland, WA (United States); Brown, C.M.; Teter, W.L. [Kaiser-Hill Co., Golden, CO (United States)

1995-11-01T23:59:59.000Z

269

Analysis of offsite emergency planning zones (EPZs) for the Rocky Flats Plant  

SciTech Connect

This Project Plan Overview summarizes the design of a project to complete analysis of offsite Emergency Planning Zones (EPZs) for the Rocky Flats Plant. Federal, state, and local governments develop emergency plans for facilities that may affect the public in the event of an accidental release of nuclear or hazardous materials. One of the purposes of these plans is to identify EPZs where actions could be necessary to protect public health. Public protective actions include sheltering, evacuation, and relocation. Agencies use EPZs to develop response plans and to determine needed resources. DOE and EG G Rocky Flats, Inc., will develop recommended offsite EPZs for the Rocky Flats Plant (RFP). We will develop recommended sheltering and evacuation EPZs for accidental release of radionuclides to the atmosphere from the facility. We will also develop recommended EPZs for accidental releases of major nonradiological hazardous substances to the atmosphere, and will analyze the impacts of an unplanned surface water release from the facility. DOE and EG G Rocky Flats will submit these recommendations to the CDH for potential use in the State's offsite emergency planning for the Rocky Flats Plant. 3 refs., 3 figs., 4 tabs.

Hodgin, C.R.; Armstrong, C.; Daugherty, N.M.; Foppe, T.L.; Petrocchi, A.J.; Southward, B.

1990-05-16T23:59:59.000Z

270

Caithness Shephards Flat: The Largest Wind Farm Project in the World |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Caithness Shephards Flat: The Largest Wind Farm Project in the Caithness Shephards Flat: The Largest Wind Farm Project in the World Caithness Shephards Flat: The Largest Wind Farm Project in the World October 12, 2010 - 5:04pm Addthis Andy Oare Andy Oare Former New Media Strategist, Office of Public Affairs What does this project do? Wind farm project is projected to employ over 400 people in construction phase. It is expected to produce 845 megawatt wind-powered electrical generation, or enough wind energy to supply 235,000 homes. It will directly avoid 1,215,991 tons of carbon dioxide per year, roughly equivalent to the annual greenhouse gas emissions from 212,141 passenger vehicles. "One step at a time" This is a mantra that has been used in countless situations - trying to express the scale of a great challenge that may lie ahead, but emphasizing

271

Comparative risk analysis for the Rocky Flats Plant integrated project planning  

SciTech Connect

The Rocky Flats Plant is developing, with active stakeholder participation, a comprehensive planning strategy that will support transition of the Rocky Flats Plant from a nuclear weapons production facility to site cleanup and final disposition. Final disposition of the Rocky Flats Plant materials and contaminants requires consideration of the interrelated nature of sitewide problems, such as material movement and disposition, facility and land use endstates, costs, relative risks to workers and the public, and waste disposition. Comparative risk analysis employs both incremental risk and cumulative risk evaluations to compare risks from postulated options or end states. These postulated options or end states can be various remedial alternatives, or future endstate uses of federal land.

Jones, M.E.; Shain, D.I.

1994-12-31T23:59:59.000Z

272

Comparative risk analysis for the Rocky Flats Plant integrated project planning  

SciTech Connect

The Rocky Flats Plant is developing, with active stakeholder a comprehensive planning strategy that will support transition of the Rocky Flats Plant from a nuclear weapons production facility to site cleanup and final disposition. Final disposition of the Rocky Flats Plant materials and contaminants requires consideration of the interrelated nature of sitewide problems, such as material movement and disposition, facility and land use endstates, costs relative risks to workers and the public, and waste disposition. Comparative Risk Analysis employs both incremental risk and cumulative risk evaluations to compare risks from postulated options or endstates. These postulated options or endstates can be various remedial alternatives, or future endstate uses of federal agency land. Currently, there does not exist any approved methodology that aggregates various incremental risk estimates. Comparative Risk Analysis has been developed to aggregate various incremental risk estimates to develop a site cumulative risk estimate. This paper discusses development of the Comparative Risk Analysis methodology, stakeholder participation and lessons learned from these challenges.

Jones, M.E.; Shain, D.I.

1994-05-01T23:59:59.000Z

273

Long-term risk stabilization of the Rocky Flats Plant residues  

SciTech Connect

The liquid and solid residues continue to be a concern at Rocky Flats, primarily due to safety aspects of long-term storage and of the need for processing them into a form for ultimate disposal. Currently, Rocky Flats is processing the low-level solutions from bottles and tanks by direct cementation for storage and disposal. Plans for actinide precipitation of the high-level solutions are being finalized with an anticipated completion date of 2 to 3 yr. The solid residues present a more difficult challenge because of the numerous forms that these exist. Rocky Flats is developing several strategies to handle these materials for safe long-term storage and eventual disposal.

Melberg, T.A. [Dept. of Energy, Golden, CO (United States)

1994-12-31T23:59:59.000Z

274

Overview of imporved criticality safety limits at the Rocky Flats plant  

SciTech Connect

This paper provides an overview of improved criticality safety limits developed for nuclear operations at the Rocky Flats plant. A concern that some limits were ambiguous and too complex has been resolved by involving the process operators (addressing human factors) in the limit development process. In the summer of 1989, there was a public concern that a criticality accident may have occurred and gone undetected at the Rocky Flats plant near Golden, Colorado. To resolve this concern, the US Department of Energy (DOE) asked Scientech, Inc., to assemble an independent review team and assess the concern. The Scientech team concluded that there was no indication that a criticality accident had ever occurred at the Rocky Flats plant. However, the team did identify inadequate safety conditions and practices and recommended corrective actions.

Grethel, T.E.; Moon, N.A. (Department of Energy, Golden, CO (United States)); Brown, C.L. (M.H. Chew Associates, Inc., Golden, CO (United States))

1993-01-01T23:59:59.000Z

275

The low frequency 2D vibration sensor based on flat coil element  

SciTech Connect

Vibration like an earthquake is a phenomenon of physics. The characteristics of these vibrations can be used as an early warning system so as to reduce the loss or damage caused by earthquakes. In this paper, we introduced a new type of low frequency 2D vibration sensor based on flat coil element that we have developed. Its working principle is based on position change of a seismic mass that put in front of a flat coil element. The flat coil is a part of a LC oscillator; therefore, the change of seismic mass position will change its resonance frequency. The results of measurements of low frequency vibration sensor in the direction of the x axis and y axis gives the frequency range between 0.2 to 1.0 Hz.

Djamal, Mitra; Sanjaya, Edi; Islahudin; Ramli [Department of Physics, Institut Teknologi Bandung, Jl. Ganesa 10 Bandung 40116 (Indonesia); Department of Physics, Institut Teknologi Bandung, Jl. Ganesa 10 Bandung 40116 (Indonesia) and Department of Physics, UIN Syarif Hidayatullah, Jl. Ir.H. Djuanda 95 Ciputat 15412 (Indonesia); MTs NW Nurul Iman Kembang Kerang, Jl. Raya Mataram - Lb.Lombok, NTB (Indonesia); Department of Physics, Institut Teknologi Bandung, Jl. Ganesa 10 Bandung 40116 (Indonesia) and Department of Physics,Universitas Negeri Padang, Jl. Prof. Hamka, Padang 25132 (Indonesia)

2012-06-20T23:59:59.000Z

276

Plutonium contamination in soils in open space and residential areas near Rocky Flats, Colorado  

SciTech Connect

Spatial analysis of the {sup 240}Pu:{sup 239}Pu isotopic ratio of 42 soil samples collected around Rocky Flats Plant near Golden, Colorado, was conducted to assess the effect of Rocky Flats Plant activity on the soil environment. Two probability maps that quantified the uncertainty of the spatial distribution of plutonium isotopic ratios were constructed using the sequential Gaussian simulation technique (sGs). Assuming a plutonium isotopic ratio range of 0.152 {+-} 0.003 to 0.169 {+-} 0.009 is characteristic to global fallout in Colorado, and a mean value of 0.155 is representative for the Rocky Flats Plant area, the main findings of the current work were (1) the areas northwest and southwest of Rocky Flats Plant exhibited a plutonium ratio {ge}0.155, this were minimally impacted by the plant activity; (2) he study area east of Rocky Flats Plant exhibited a plutonium isotopic ratio {le}0.155, which is a definitive indicator of Rocky Flats Plant-derived plutonium; and (3) inventory calculations across the study area exhibited large standard error of estimates. These errors were originated from the high variability in plutonium activity over a small sampling scale and the uncertainty in the global fallout isotopic ratio. Using the mean simulated estimates of plutonium isotopic ratio, coupled with plutonium activity measured at 11 soil pits and additional plutonium information published elsewhere, the plutonium loading on the open space and residential areas amounted to 111.2 GBq, with a standard error of estimate of 50.8 GBq.

Litaor, M.I. [Tel-Hai Rodman Coll., Upper Galilee (Israel). Dept. of Biotechnology and Environmental Sciences

1999-02-01T23:59:59.000Z

277

The distortion of a uniform flow field due to a finite flat plate  

E-Print Network (OSTI)

THE DISTORTION OI' A UNIFORM FLON FIELD DUE TO A FINITE FLAT PLATE A Thesis Lawrence Michael Zull Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May... 1970 Major Subject: Mechanical F~nin~eerin THE DISTORTION OF A UNIFORM FLOV FIELD DUE TO A FINITE FLAT PLATE A Thesis by Lawrence Michael Zull Approved as to style and content by: (Ch (Head of De artment) (Member) (Member) ~Ma 19 70 AB...

Zull, Lawrence Michael

2012-06-07T23:59:59.000Z

278

Future is new focus at energy department`s Rocky Flats facility  

SciTech Connect

After several years of intensive effort to address radioactive pollution threatening nearby communities, officials at the Energy Department`s Rocky Flats plant now are turning their attention to the site`s plutonium buildings and finding a cleanup challenge of equally daunting proportions. Containing and mopping up off-site soil and water contamination remains the first priority at the Colorado facility, but site environmental managers say the huge volumes of plutonium and associated radioactive waste stored in Rocky Flats` aging building pose increasingly urgent safety concerns.

Lobsenz, G.

1993-11-12T23:59:59.000Z

279

Evaluation of an emergency response model for the Rocky Flats Plant: Charter  

SciTech Connect

This Charter provides a basis for a cooperative, interagency effort to evaluate the Terrain-Responsive Atmospheric Code for emergency response and emergency planning for the Rocky Flats Plant. This document establishes the foundation for the project entitled, Evaluation of an Emergency Response Model for the Rocky Flats Plant'' (to be referred to as the Project). This document meets the following objectives: Identify the Project; establish the project management structure, organizational responsibilities, and organizational commitments for reaching the goals of the Project, and identify a process for model revision and revelation for acceptance. 2 figs.

Not Available

1991-01-01T23:59:59.000Z

280

Comprehensive appraisal of {sup 239+240}Pu in soils around Rocky Flats, Colorado  

SciTech Connect

Plutonium contamination of soils around Rocky Flats Environmental & Technology Site, near Golden, Colorado, resulted from past outdoor storage practices and subsequent remobilization due to inadequate cleanup practices. Until now human-health risk assessment has not been performed because of a lack of sufficient information regarding the spatial extent of {sup 239+240}Pu in soils. The purpose of this work was to elucidate the extent of plutonium contamination in surface soils, and to assess the uncertainty associated with the spatial distribution of {sup 239+240}Pu around Rocky Flats Environmental & Technology Site.

Litaor, M.I.; Allen, L. [EG& G Rocky Flats, Golden, CO (United States); Ellerbroek, D. [S.M. Stoller Corp., Boulder, CO (United States)] [and others

1995-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Decontamination and decommissioning of building 889 at Rocky Flats Environmental Technology Site  

SciTech Connect

At the Rocky Flats site, the building 889 decommissioning project was the first large-scale decommissioning project of a radiologically contaminated facility at Rocky Flats. The scope consisted of removal of all equipment and utility systems from the interior of the building, decontamination of interior building surfaces, and the demolition of the facility to ground level. Details of the project management plan, including schedule, engineering, cost, characterization methodologies, decontamination techniques, radiological control requirements, and demolition methods, are provided in this article. 1 fig., 3 tabs.

Dorr, K.A. [Kaiser-Hill Co., Golden, CO (United States); Hickman, M.E.; Henderson, B.J. [Rocky Mountain Remediation Services, Golden, CO (United States); Sexton, R.J. [Scientific Ecology Group, Golden, CO (United States)

1997-09-01T23:59:59.000Z

282

Induced matter: Curved N-manifolds encapsulated in Riemann-flat N+1 dimensional space  

E-Print Network (OSTI)

Liko and Wesson have recently introduced a new 5-dimensional induced matter solution of the Einstein equations, a negative curvature Robertson-Walker space embedded in a Riemann flat 5-dimensional manifold. We show that this solution is a special case of a more general theorem prescribing the structure of certain N+1-dimensional Riemann flat spaces which are all solutions of the Einstein equations. These solutions encapsulate N-dimensional curved manifolds. Such spaces are said to "induce matter" in the sub-manifolds by virtue of their geometric structure alone. We prove that the N-manifold can be any maximally symmetric space.

Harry I. Ringermacher; Lawrence R. Mead

2005-11-02T23:59:59.000Z

283

Dynamic pressure response of water flow between closely spaced roughened flat plates  

E-Print Network (OSTI)

of MASTER OF SCIENCE May 1993 Major Subject: Mechanical Engineering DYNAMIC PRESSURE RESPONSE OF WATER FLOW BETWEEN CLOSELY SPACED ROUGHENED FLAT PLATES A Thesis by JOHN CHARLES HESS Approved as to style and content by: Robert E. DeOtte, Jr. (Co.... S. , Texas A&M University Co-Chairs of Advisory Committee: Dr. R. E. DeOtte, Jr, Dr. G, L, Morrison A flat plate tester was designed and built to determine friction factors and dynamic pressures for water flow over smooth, knurl, and cavity...

Hess, John Charles

2012-06-07T23:59:59.000Z

284

Ground-water levels and tritium concentrations at the Maxey Flats low-level radioactive waste disposal site near Morehead, Kentucky, June 1984 to April 1989  

SciTech Connect

The Maxey Flats disposal site, Kentucky encompasses about 280 acres near the edge of a flat-topped ridge. The ridge is underlain by fractured shale and sandstone beds of the Nancy Member and the Farmers Member of the Borden Formation of Mississippian age. Groundwater flow in the strata beneath the site occurs through fractures, and flow patterns are difficult to delineate. The potentiometric surface also is difficult to delineate because several saturated and unsaturated zones are present in the rocks. Generally, ground-water levels in wells intersecting permeable fractures fluctuated seasonally and were lowest from December through June and highest from July through November. Water levels in the disposal trenches fluctuations less than those in wells, and for most trenches the fluctuations were less than 0.5 foot. From June 1984 to April 1989, tritium concentrations in groundwater ranged from 0 to 2,402,200 picocuries/ml. The greatest and most variable tritium concentrations were in wells along the northwest side of the site. The major conduit of groundwater flow from the trenches in the northwestern part of the site is a fractured sandstone bed that forms the base of most trenches. Elsewhere along the site perimeter, elevated levels of tritium were not detected in wells, and mean tritium were not detected in wells, and mean tritium concentrations showed little change between 1986 and 1988.

Wilson, K.S.; Lyons, B.E. (Geological Survey, Reston, VA (United States))

1991-01-01T23:59:59.000Z

285

Long-Term Surveillance and Maintenance at Rocky Flats: Early Experiences and Lessons Learned  

SciTech Connect

The U.S. Department of Energy's (DOE's) Rocky Flats Site was established in 1951 as part of the United States' nationwide nuclear weapons complex to manufacture nuclear weapons components. In 1992 weapons production halted, and the Rocky Flats mission changed to include environmental investigations, cleanup, and site closure. In October 2005, DOE and its contractor completed an accelerated 10-year, $7 billion cleanup of chemical and radiological contamination left from nearly 50 years of production. The cleanup required the decommissioning, decontamination, demolition, and removal of more than 800 structures; removal of more than 500,000 cubic meters of low-level radioactive waste; and remediation of more than 360 potentially contaminated environmental sites. The final remedy for the site was selected in September 2006 and included institutional controls, physical controls, and continued monitoring for the former industrial portion of the site. The remainder of the site, which served as a buffer zone surrounding the former industrial area, was transferred to the U.S. Fish and Wildlife Service in July 2007 for a national wildlife refuge. DOE's Office of Legacy Management is responsible for the long-term surveillance and maintenance of Rocky Flats, which includes remedy implementation activities and general site maintenance. Several factors have complicated the transition from closure to post-closure at Rocky Flats. The early experiences associated with the two years since the physical cleanup and closure work were completed have led to several valuable lessons learned. (authors)

Surovchak, S. [U.S. Department of Energy, Office of Legacy Management, Westminster, CO (United States); Kaiser, L.; DiSalvo, R.; Boylan, J.; Squibb, G.; Nelson, J.; Darr, B.; Hanson, M. [S.M. Stoller Corporation, Westminster, CO (United States)

2008-07-01T23:59:59.000Z

286

RIGID FLAT WEBS ON THE PROJECTIVE PLANE DAVID MARIN AND JORGE VITORIO PEREIRA  

E-Print Network (OSTI)

RIGID FLAT WEBS ON THE PROJECTIVE PLANE DAVID MAR´IN AND JORGE VIT´ORIO PEREIRA Abstract the invitation of CRM at Bellaterra in July 2010. 1 #12;2 DAVID MAR´IN AND JORGE VIT ´ORIO PEREIRA for a generic

Pereira, Jorge Vitório

287

Solution of 2D Boussinesq systems with FreeFem++: the flat bottom case  

E-Print Network (OSTI)

Solution of 2D Boussinesq systems with FreeFem++: the flat bottom case Georges Sadaka May 14, 2012-parameter family of Boussinesq type systems in two space dimensions which approx- imate the three-dimensional Euler and Mitsotakis have developed a code in finite volumes for the Boussinesq system with variable bottom in 1D ([Dut

Paris-Sud XI, Université de

288

Two-dimensional design of post-tensioned concrete flat slab bridges  

E-Print Network (OSTI)

A new procedure is described for design of flat-slab post- tensioned highway bridges. The goal is to provide a rational, sophisticated, and yet relatively facile method of design for this complex class of structures. One-dimensional strip analysis...

Shrestha, Suchitra Bahadur

2012-06-07T23:59:59.000Z

289

Geometric Control and Differential Flatness of a Quadrotor UAV with a Cable-Suspended Load  

E-Print Network (OSTI)

is established to be a differentially-flat hybrid system with the load position and the quadrotor yaw serving on the configuration space SE(3)Ã?S2 , is obtained by taking variations on manifolds. The quadrotor-load system, see [9]. However, carrying an external load through a gripper increases the inertia of the system

Sreenath, Koushil

290

Recovering Shape Characteristics on Near-flat Specular Surfaces Yuanyuan Ding and Jingyi Yu  

E-Print Network (OSTI)

surfaces have also been directly integrated into Figure 1. Distortions observed on near-flat window surfaces. animations and film footage to reproduce realistic phenom- ena [4]. In this paper, we focus example is the image observed on a window as shown in Figure 1. Although the surface is highly planar

Taufer, Michela

291

Thermal response of a flat heat pipe sandwich structure to a localized heat flux  

E-Print Network (OSTI)

metal foam wick and distilled water as the working fluid. Heat was applied via a propane torch and radiative heat transfer. A novel method was developed to estimate experimentally, the heat flux distribution rights reserved. Keywords: Flat heat pipe; Thermal spreader; Heat transfer; Evaporator; Condenser 1

Wadley, Haydn

292

EIS-0064: Rocky Flats Plant Site, Jefferson County, Golden, Colorado (see also ERDA-1545-D)  

Energy.gov (U.S. Department of Energy (DOE))

The U.S. Department of Energy developed this statement to evaluate the site specific environmental impacts of continuing to conduct nuclear weapons production activities at the Rocky Flats Plant; alternatives for the conduct of such activities; and environmental impacts of the U.S. policy to produce nuclear weapons.

293

An experimental investigation on a solar still with an integrated flat plate collector  

Science Journals Connector (OSTI)

Abstract This work promotes the performance of the single basin solar still by means of preheating the saline water using an integrated flat plate collector arrangement. A conventional single slope single basin still and a single slope flat plate collector basin still (FPCB still) are fabricated with the same basin area of 1 m2. The FPCB still is fabricated similar to a conventional still, with the integration of a horizontal flat plate collector arrangement to form six small compartments in the basin. The projected space between the consecutive basins acts as an extended surface which increases the temperature of the basin as well as the flat plate collector where the saline water is preheated before it enters the basin. Due to separate compartments (absorber plate) in the basin, the mass of water reduces and the evaporation rate increases for the same depth of water in the basin. Experiments are carried out by varying the water depth in the basin and using the wick and energy storing materials in basins of both stills. The FPCB still gives about 60% higher distillate than the conventional still for the same basin condition. Economic analysis shows that the cost of distilled water for the FPCB still is lower than that for the conventional still.

T. Rajaseenivasan; P. Nelson Raja; K. Srithar

2014-01-01T23:59:59.000Z

294

A DC corona discharge on a flat plate to induce air Pierre MAGNIER1  

E-Print Network (OSTI)

with applied voltage. Moreover, with voltage higher than a threshold value, the electric discharge changes. For this purpose, different electric discharges have recently been developed, such as the "One Atmosphere Uniform to an arc regime. Figure 1: DC surface corona discharge actuator on a flat plate. 2.2. Optical Setup

Paris-Sud XI, Université de

295

A SOLAR STILL AUGMENTED WITH A FLAT-PLATE COLLECTOR AND A REFLECTOR  

E-Print Network (OSTI)

A SOLAR STILL AUGMENTED WITH A FLAT-PLATE COLLECTOR AND A REFLECTOR A. Saleh A. Badran Mechanical ­ Jordan Amman ­ Jordan e-mail: asaleh@philadelphia.edu.jo e-mail: badran@ju.edu.jo ABSTRACT A solar distillation system was built and tested to study the effect of increasing the solar radiation incident

296

An evaluation of the thermal characteristics of a flat plate heat pipe spreader  

E-Print Network (OSTI)

loss could bc determined. Duc to the axisymmetric nature of the i. echnique, it was necessary to define the effective radial heat pipe dimensions. ln the case of a disk shaped flat heat pipe, the effective radius is equal to the radius of the disk...

Chesser, Jason Blake

2000-01-01T23:59:59.000Z

297

Supercontinuum-based 10-GHz flat-topped optical frequency comb generation  

E-Print Network (OSTI)

and Nanoscience Department, Chalmers University of Technology, SE-41296 Göteborg, Sweden * rwu@purdue.edu Abstract-topped optical frequency comb (> 3.64-THz or 28 nm bandwidth with ~365 spectral lines within 3.5-dB power device allows the pulses to enter into the optical wave-breaking regime, thus achieving a smooth flat

Purdue University

298

Vitrification of plutonium at Rocky Flats the argument for a pilot plant  

SciTech Connect

Current plans for stabilizing and storing the plutonium at Rocky Flats Plant fail to put the material in a form suitable for disposition and resistant to proliferation. Vitrification should be considered as an alternate technology. The vitrification should begin with a small-scale pilot plant.

Moore, L. [Rocky Mountain Peace Center, Boulder, CO (United States)

1996-05-01T23:59:59.000Z

299

Radiological/Health physics program assessement at Rocky Flats, the process  

SciTech Connect

The Department of Energy, Rocky Flats Office, Safety and Health Group, Health Physics Team (HPT) is responsible for oversight of the Radiation Protection and Health Physics Program (RPHP) of the Integrating Management Contractor (IMC), Kaiser-Hill (K-H) operations at the Rocky Flats Environmental Technology Site (RFETS). As of 1 January 1996 the Rocky Flats Plant employed 300 DOE and 4,300 contractor personnel (K-H and their subcontractors). WSI is a subcontractor and provides plant security. To accomplish the RPHP program oversight HPT personnel developed a systematic methodology for performing a functional RPHP Assessment. The initial process included development of a flow diagram identifying all programmatic elements and assessment criteria documents. Formulation of plans for conducting interviews and performance of assessments constituted the second major effort. The generation of assessment reports was the final step, based on the results of this process. This assessment will be a 6 person-year effort, over the next three years. This process is the most comprehensive assessment of any Radiation Protection and Health Physics (RPHP) Program ever performed at Rocky Flats. The results of these efforts will establish a baseline for future RPHP Program assessments at RFETS. This methodology has been well-received by contractor personnel and creates no Privacy Act violations or other misunderstandings.

Psomas, P.O. [Department of Energy, Golden, CO (United States)

1996-06-01T23:59:59.000Z

300

Longevity and progressive abandonment of the Rocky Flats surface, Front Range, Colorado  

Science Journals Connector (OSTI)

The post-orogenic evolution of the Laramide landscape of the western U.S. has been characterized by late Cenozoic channel incision of basins and their adjacent ranges. One means of constraining the incision history of basins is dating the remnants of gravel-capped surfaces above modern streams. Here, we focus on an extensive remnant of the Rocky Flats surface between Golden and Boulder, Colorado, and use in situ-produced 10Be and 26Al concentrations in terrace alluvium to constrain the Quaternary history of this surface. Coal and Ralston Creeks, both tributaries of the South Platte River, abandoned the Rocky Flats surface and formed the Verdos and Slocum pediments, which are cut into Cretaceous bedrock between Rocky Flats and the modern stream elevations. Rocky Flats alluvium ranges widely in age, from > 2 Ma to ? 400 ka, with oldest ages to the east and younger ages closer to the mountain front. Numerical modeling of isotope concentration depth profiles suggests that individual sites have experienced multiple resurfacing events. Preliminary results indicate that Verdos and Slocum alluvium along Ralston Creek, which is slightly larger than Coal Creek, is several hundred thousand years old. Fluvial incision into these surfaces appears therefore to progress headward in response to downcutting of the South Platte River. The complex ages of these surfaces call into question any correlation of such surfaces based solely on their elevation above the modern channel.

Catherine A. Riihimaki; Robert S. Anderson; Elizabeth B. Safran; David P. Dethier; Robert C. Finkel; Paul R. Bierman

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Tools for Closure Project and Contract Management: Development of the Rocky Flats Integrated Closure Project Baseline  

SciTech Connect

This paper details the development of the Rocky Flats Integrated Closure Project Baseline - an innovative project management effort undertaken to ensure proactive management of the Rocky Flats Closure Contract in support of the Department's goal for achieving the safe closure of the Rocky Flats Environmental Technology Site (RFETS) in December 2006. The accelerated closure of RFETS is one of the most prominent projects within the Department of Energy (DOE) Environmental Management program. As the first major former weapons plant to be remediated and closed, it is a first-of-kind effort requiring the resolution of multiple complex technical and institutional challenges. Most significantly, the closure of RFETS is dependent upon the shipment of all special nuclear material and wastes to other DOE sites. The Department is actively working to strengthen project management across programs, and there is increasing external interest in this progress. The development of the Rocky Flats Integrated Closure Project Baseline represents a groundbreaking and cooperative effort to formalize the management of such a complex project across multiple sites and organizations. It is original in both scope and process, however it provides a useful precedent for the other ongoing project management efforts within the Environmental Management program.

Gelles, C. M.; Sheppard, F. R.

2002-02-26T23:59:59.000Z

302

Interacting polytropic gas model of phantom dark energy in non-flat universe  

E-Print Network (OSTI)

By introducing the polytropic gas model of interacting dark energy, we obtain the equation of state for the polytropic gas energy density in a non-flat universe. We show that for even polytropic index by choosing $K>Ba^{\\frac{3}{n}}$, one can obtain $\\omega^{\\rm eff}_{\\Lambda}<-1$, which corresponds to a universe dominated by phantom dark energy.

K. Karami; S. Ghaffari; J. Fehri

2009-11-25T23:59:59.000Z

303

Interaction of silica nano-particles with a flat silica surface through neutron reflectometry  

SciTech Connect

Neutron reflectometry (NR) was employed to study the interaction of nanosized silica particles with a flat silica surface in aqueous solutions. Unlike other experimental tools that are used to study surface interactions, NR can provide information on the particle density profile in the solution near the interface. Two types of silica particles (25 and 100 nm) were suspended in aqueous solutions of varying ionic strength. Theoretical calculations of the surface interaction potential between a particle and a flat silica surface using the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory were compared to the experimental data. The theory predicts that the potential energy is highly dependent on the ionic strength. In high ionic strength solutions, NR reveals a high concentration of particles near the flat silica surface. Under the same conditions, theoretical calculations show an attractive force between a particle and a flat surface. For low ionic strength solutions, the particle concentration near the surface obtained from NR is the same as the bulk concentration, while depletion of particles near the surface is expected because of the repulsion predicted by the DLVO theory.

Chung, Eunhyea [Georgia Institute of Technology; Yiacoumi, Sotira [Georgia Institute of Technology; Halbert, Candice E [ORNL; Ankner, John Francis [ORNL; Wang, Wei [ORNL; Tsouris, Costas [ORNL

2012-01-01T23:59:59.000Z

304

Independent Oversight Review of the Rocky Flats Environmental Technology Site Transportation Emergency Management Program  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Rocky Rocky Flats Environmental Technology Site Transportation Emergency Management Program Independent Oversight Review of the March 2000 OVERSIGHT Table of Contents EXECUTIVE SUMMARY ................................................................... 1 1.0 INTRODUCTION ........................................................................... 4 2.0 RESULTS ......................................................................................... 6 Hazard Survey and Hazards Assessments .................................... 6 Program Plans and Procedures ..................................................... 7 Emergency Responder Performance and Preparation ............... 9 Offsite Interfaces ........................................................................... 10 Feedback and Continuous Improvement Process

305

Comparison of flat cleaved and cylindrical diffusing fibers as treatment sources for interstitial photodynamic therapy  

SciTech Connect

Purpose: For interstitial photodynamic therapy (iPDT) of bulky tumors, careful treatment planning is required in order to ensure that a therapeutic dose is delivered to the tumor, while minimizing damage to surrounding normal tissue. In clinical contexts, iPDT has typically been performed with either flat cleaved or cylindrical diffusing optical fibers as light sources. Here, the authors directly compare these two source geometries in terms of the number of fibers and duration of treatment required to deliver a prescribed light dose to a tumor volume. Methods: Treatment planning software for iPDT was developed based on graphics processing unit enhanced Monte Carlo simulations. This software was used to optimize the number of fibers, total energy delivered by each fiber, and the position of individual fibers in order to deliver a target light dose (D{sub 90}) to 90% of the tumor volume. Treatment plans were developed using both flat cleaved and cylindrical diffusing fibers, based on tissue volumes derived from CT data from a head and neck cancer patient. Plans were created for four cases: fixed energy per fiber, fixed number of fibers, and in cases where both or neither of these factors were fixed. Results: When the number of source fibers was fixed at eight, treatment plans based on flat cleaved fibers required each to deliver 7180–8080 J in order to deposit 90 J/cm{sup 2} in 90% of the tumor volume. For diffusers, each fiber was required to deliver 2270–2350 J (333–1178 J/cm) in order to achieve this same result. For the case of fibers delivering a fixed 900 J, 13 diffusers or 19 flat cleaved fibers at a spacing of 1 cm were required to deliver the desired dose. With energy per fiber fixed at 2400 J and the number of fibers fixed at eight, diffuser fibers delivered the desired dose to 93% of the tumor volume, while flat cleaved fibers delivered this dose to 79%. With both energy and number of fibers allowed to vary, six diffusers delivering 3485–3600 J were required, compared to ten flat cleaved fibers delivering 2780–3600 J. Conclusions: For the same number of fibers, cylindrical diffusers allow for a shorter treatment duration compared to flat cleaved fibers. For the same energy delivered per fiber, diffusers allow for the insertion of fewer fibers in order to deliver the same light dose to a target volume.

Baran, Timothy M., E-mail: timothy.baran@rochester.edu; Foster, Thomas H. [Department of Imaging Sciences, University of Rochester, Rochester, New York 14642 (United States)] [Department of Imaging Sciences, University of Rochester, Rochester, New York 14642 (United States)

2014-02-15T23:59:59.000Z

306

Heat Transfer -1 A satellite in space orbits the sun. The satellite can be approximated as a flat plate with  

E-Print Network (OSTI)

Heat Transfer - 1 A satellite in space orbits the sun. The satellite can be approximated as a flat plate with dimensions and properties given below. (a) Calculate the solar heat flux (W/m2 is at a distance where the solar heat flux (as defined above) is 500 W/m2 , and the flat plate is oriented

Virginia Tech

307

CONSTRUCTION HISTORY OF THE ROCKY MOUNT HISTORIC SITE (40SL386), PINEY FLATS, TENNESSEE FROM TREE-RING AND  

E-Print Network (OSTI)

CONSTRUCTION HISTORY OF THE ROCKY MOUNT HISTORIC SITE (40SL386), PINEY FLATS, TENNESSEE FROM TREE-RING AND DOCUMENTARY EVIDENCE Henri D. Grissino-Mayer, Lisa B. LaForest, and Saskia L. van de Gevel The Rocky Mount Historic Site (40SL386) in Piney Flats, Tennessee, houses structures that many believe date to the founding

Grissino-Mayer, Henri D.

308

Water Formatics Engineered formation of nanobubbles networks  

E-Print Network (OSTI)

of nanobubbles [3,4,11,14]. 2. A decrease in surface tension from 72 to 68 dyn/cm [11]. 3. Increase nanobubble network is the out come of a self organization process due to the collective effect of bubble-bubble term stability of water structure is resulted from the formation of dense array of stable gas

Jacob, Eshel Ben

309

Review of Beryllium Management Practices at Rocky Flats During Closure Operations  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE-Environmental Management DOE - Complex Wide Review of Beryllium Management Practices at Rocky Flats During Closure Operations Challenge Beryllium (Be) metal is used by DOE in weapons production, as a reactor moderator or reflector, and as a fuel element cladding. Workers who are exposed to high concentrations of beryllium often develop acute beryllium disease caused by the inhalation of beryllium dust or particles which can cause Be sensitivity or chronic Be disease (CBD), a disabling and often fatal lung disease. A review of Rocky Flats Environmental Technology Site (RFETS) Be practices put in place by Kaiser-Hill, the cleanup contractor, was initiated to determine the effectiveness of RFETS beryllium characterization and prevention programs and to determine what, if any, suggestions could be

310

Near Flat Space limit of strings on AdS_4 x CP^3  

E-Print Network (OSTI)

The non-linear nature of string theory on non-trivial backgrounds related to the AdS/CFT correspondence suggests to look for simplifications. Two such simplifications proved to be useful in studying string theory. These are the pp-wave limit which describes point-like strings and the so called "near flat space" limit which connects two different sectors of string theory -- pp-waves and "giant magnons". Recently another example of AdS/CFT duality emerged - $AdS_4/CFT_3$, which suggests duality between $\\mathcal N=6$ CS theory and superstring theory on $AdS_4\\times \\cp$. In this paper we study the "near flat space" limit of strings on the $AdS_4\\times \\cp$ background and discuss possible applications of the reduced theory.

M. Kreuzer; R. C. Rashkov; M. Schimpf

2008-10-11T23:59:59.000Z

311

Effects of self-assembled monolayer and PFPE lubricant on wear characteristics of flat silicon tips.  

SciTech Connect

The effects of self-assembled monolayer (SAM) and perfluoropolyether (PFPE) lubricant on the wear characteristics of flat silicon tips were investigated. The wear test consisted of sliding the silicon tips fabricated on a flat silicon specimen against SAM and PFPE (Z-tetraol) coated silicon (100) wafer. The tips were slid at a low speed for about 15 km under an applied load of 39.2 {micro}N. The wear volume of the tip was obtained by measuring the tip profile using an Atomic Force Microscope (AFM). It was found that the coatings were effective in reducing the wear of the tips by an order of magnitude from 10{sup -6} to 10{sup -7}.

Kim, H. J.; Jang, C. E.; Kim, D. E.; Kim, Y. K.; Choa, S. H.; Hong, S.; Materials Science Division; Yonsei Univ.; Samsung Adv. Inst. Science and Technology; Seoul National Univ. of Technology

2009-01-01T23:59:59.000Z

312

Rocky Flats Environmental Technology Site Ecological Monitoring Program 1995 annual report  

SciTech Connect

The Ecological Monitoring Program (ECMP) was established at the Rocky Flats Environmental Technology Site (Site) in September 1992. At that time, EcMP staff developed a Program Plan that was peer-reviewed by scientists from western universities before submittal to DOE RFFO in January 1993. The intent of the program is to measure several quantitative variables at different ecological scales in order to characterize the Rocky Flats ecosystem. This information is necessary to document ecological conditions at the Site in impacted and nonimpacted areas to determine if Site practices have had ecological impacts, either positive or negative. This information can be used by managers interested in future use scenarios and CERCLA activities. Others interested in impact analysis may also find the information useful. In addition, these measurements are entered into a database which will serve as a long-term information repository that will document long-term trends and potential future changes to the Site, both natural and anthropogenic.

NONE

1995-05-31T23:59:59.000Z

313

The marriage of RCRA and CERCLA at the Rocky Flats Environmental Technology Site  

SciTech Connect

A key goal of the Rocky Flats Cleanup Agreement (RFCA) signed in July of 1996 was to provide a seamless marriage of the Resource Conservation and Recovery Act (RCRA) (and other media specific programs) and the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) and the implementing agencies of each. This paper examines the two years since the signing of RFCA and identifies the successes, failures, and stresses of the marriage. RFCA has provided an excellent vehicle for regulatory and substantive progress at the Department of Energy`s Rocky Flats facility. The key for a fully successful marriage is to build on the accomplishments to date and to continually improve the internal and external systems and relationships. To date, the parties can be proud of both the substantial accomplishment of substantive environmental work and the regulatory systems that have enabled the work.

Shelton, D.C.; Brooks, L.M.

1998-11-01T23:59:59.000Z

314

Air Quality Scoping Study for Sarcobatus Flat, Nevada (EMSI April 2007)  

SciTech Connect

The Desert Research Institute (DRI) is performing a scoping study as part of the U.S. Department of Energy’s Yucca Mountain Environmental Monitoring Systems Initiative (EMSI). The main objective is to obtain baseline air quality information for Yucca Mountain and an area surrounding the Nevada Test Site (NTS). Air quality and meteorological monitoring and sampling equipment housed in a mobile trailer (shelter) is collecting data at seven sites outside the NTS, including Ash Meadows National Wildlife Refuge, Sarcobatus Flat, Beatty, Rachel, Caliente, Pahranagat National Wildlife Refuge, and Crater Flat, and at four sites on the NTS. The trailer is stationed at any one site for approximately eight weeks at a time. Letter reports provide summaries of air quality and meteorological data, on completion of each site’s sampling program.

Johann Engelbrecht, Ilias Kavouras, Dave Campbell, Scott Campbell, Steven Kohl and David Shafer

2007-04-01T23:59:59.000Z

315

Flat panel display using Ti-Cr-Al-O thin film  

DOE Patents (OSTI)

Thin films of Ti--Cr--Al--O are used as a resistor material. The films are rf sputter deposited from ceramic targets using a reactive working gas mixture of Ar and O.sub.2. Resistivity values from 10.sup.4 to 10.sup.10 Ohm-cm have been measured for Ti--Cr--Al--O film <1 .mu.m thick. The film resistivity can be discretely selected through control of the target composition and the deposition parameters. The application of Ti--Cr--Al--O as a thin film resistor has been found to be thermodynamically stable, unlike other metal-oxide films. The Ti--Cr--Al--O film can be used as a vertical or lateral resistor, for example, as a layer beneath a field emission cathode in a flat panel display; or used to control surface emissivity, for example, as a coating on an insulating material such as vertical wall supports in flat panel displays.

Jankowski, Alan F. (Livermore, CA); Schmid, Anthony P. (Solan Beach, CA)

2002-01-01T23:59:59.000Z

316

Hillslope erosion at the Maxey Flats radioactive waste disposal site, northeastern Kentucky. Water Resources Investigation  

SciTech Connect

Maxey Flats, a disposal site for low-level radioactive waste, is on a plateau that rises 300 to 400 feet above the surrounding valleys in northeastern Kentucky. Hillslope gradients average 30 to 40 percent on three sides of the plateau. The shortest distance from a hillslope to a burial trench is 140 feet on the west side of the site. The report presents the results of a 2-year study of slope erosion processes at the Maxey Flats disposal site, and comments on the long-term integrity of the burial trenches with respect to slope retreat. Thus, the report is of much broader scope in terms of earth-surface processes than the period of data collection would suggest. As such, the discussion and emphasis is placed on infrequent, large-magnitude events that are known to occur over the time scale of interest but have not been specifically documented at the site.

Carey, W.P.; Lyverse, M.A.; Hupp, C.R.

1990-01-01T23:59:59.000Z

317

Experimental simulation of the bubble membrane radiator using a rotating flat plate  

SciTech Connect

The Bubble Membrane Radiator (BMR), to be used in space reactor systems, uses artificial gravity imposed on the working fluid by means of the centrifugal force to pump the fluid from the radiator. Experimental and analytical studies have been initiated to understand the nature of fluid and heat transport under the conditions of rotation. An experiment is described which measures the condensation of vapor on a rotating flat plate which is oriented normal to the earth's gravity vector to simulate the BMR physics. The relationship between vapor flow rates and rotation speed of the flat plate and a number of physical parameters including amount of condensate, overall heat transfer coefficient, and condensate film thickness are studied experimentally.

Al-Baroudi, H.; Klein, A.C. (Department of Nuclear Engineering, Oregon State University, Radiation Center, C116 Corvallis, OR (USA)); Pauley, K.A. (Battelle Pacific Northwest Laboratory, Battelle Boulevard, Richland, WA (USA))

1991-01-05T23:59:59.000Z

318

Microsoft Word - CX-TaylorFlatsSubstationMeterFY13_WEB.docx  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

25, 2013 25, 2013 REPLY TO ATTN OF: KEPR-4 SUBJECT: Environmental Cleareance Memorandum Bob Trisman Electrical Engineer - TEP-CSB-1 Proposed Action: Revenue meter replacement at Franklin County Public Utility District's (PUD) Taylor Flats Substation PP&A Project No: 2608 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B1.7 Electronic Equipment Location: Franklin County, Washington. Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA proposes to remove the existing equipment and replace it with a new JEMSTAR revenue meter within BPA's existing meter rack inside Franklin County PUD's Taylor Flats Substation. No ground disturbance or alteration to the control house would occur.

319

STAR FORMATION NEAR BERKELEY 59: EMBEDDED PROTOSTARS  

SciTech Connect

A group of suspected protostars in a dark cloud northwest of the young (?2 Myr) cluster Berkeley 59 and two sources in a pillar south of the cluster have been studied in order to determine their evolutionary stages and ascertain whether their formation was triggered by Berkeley 59. Narrowband near-infrared observations from the Observatoire du Mont Mégantic, {sup 12}CO (J = 3-2) and SCUBA-2 (450 and 850 ?m) observations from the JCMT, 2MASS, and WISE images, and data extracted from the IPHAS survey catalog were used. Of 12 sources studied, two are Class I objects, while three others are flat/Class II, one of which is a T Tauri candidate. A weak CO outflow and two potential starless cores are present in the cloud, while the pillar possesses substructure at different velocities, with no outflows present. The CO spectra of both regions show peaks in the range v {sub LSR} = –15 to –17 km s{sup –1}, which agrees with the velocity adopted for Berkeley 59 (–15.7 km s{sup –1}), while spectral energy distribution models yield an average interstellar extinction A{sub V} and distance of 15 ± 2 mag and 830 ± 120 pc, respectively, for the cloud, and 6.9 mag and 912 pc for the pillar, indicating that the regions are in the same vicinity as Berkeley 59. The formation of the pillar source appears to have been triggered by Berkeley 59. It is unclear whether Berkeley 59 triggered the association's formation.

Rosvick, J. M. [Department of Physical Sciences, Thompson Rivers University, 900 McGill Road, Kamloops, BC V2C 0C8 (Canada); Majaess, D. [Department of Astronomy and Physics, Saint Mary's University, Halifax, NS B3H 3C3 (Canada)

2013-12-01T23:59:59.000Z

320

Microsoft Word - CX-RiceFlatsSiteMaintenanceFY12_WEB.docx  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

12, 2012 12, 2012 REPLY TO ATTN OF: KEP-4 SUBJECT: Environmental Clearance Memorandum Steve Lowder Project Manager - TESM-AMPN-2 Proposed Action: Rice Flats Electrode Site Maintenance and Inspection Project Budget Information: Work Order #00219387 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B1.3 Routine maintenance activities Location: The proposed project area is approximately seven miles southeast of The Dalles,

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Exact solutions to Elko spinors in spatially flat Friedmann-Robertson-Walker spacetimes  

E-Print Network (OSTI)

In this paper we present exact solutions to the so-called Elko spinors for three models of expanding universe, namely the de Sitter, linear and the radiation type evolution. The study was restrict to flat, homogeneous and isotropic Friedmann-Robertson-Walker backgrounds. Starting with an Elko spinor we present the solutions for these cases and compared to the case of Dirac spinors. Besides, an attempt to use Elko spinors as a dark energy candidate in the cosmological context is investigated.

J. M. Hoff da Silva; S. H. Pereira

2014-03-06T23:59:59.000Z

322

Using White Dish CMB Anisotropy Data to Probe Open and Flat-Lambda CDM Cosmogonies  

E-Print Network (OSTI)

We use data from the White Dish experiment to set limits on cosmic microwave background radiation anisotropies in open and spatially-flat-Lambda cold dark matter cosmogonies. We account for the White Dish calibration uncertainty, and marginalize over the offset and gradient removed from the data. Our 2-sigma upper limits are larger than those derived previously. These upper limits are consistent with those derived from the $COBE$-DMR data for all models tested.

B. Ratra; K. Ganga; N. Sugiyama; G. S. Tucker; G. S. Griffin; H. T. Nguyen; J. B. Peterson

1997-10-24T23:59:59.000Z

323

Proceedings of the flat-plate solar array project research forum on photovoltaic metallization systems  

SciTech Connect

A Photovoltaic Metallization Research Forum, under the sponsorship of the Jet Propulsion Laboratory's Flat-Plate Solar Array Project and the US Department of Energy, was held March 16-18, 1983 at Pine Mountain, Georgia. The Forum consisted of five sessions, covering (1) the current status of metallization systems, (2) system design, (3) thick-film metallization, (4) advanced techniques and (5) future metallization challenges. Twenty-three papers were presented.

None

1983-11-15T23:59:59.000Z

324

A determination of the power absorbed by flat disks rotating in a liquid  

E-Print Network (OSTI)

A DETERMINATION OF THE POWER ABSORBED BY FLAT DISKS ROTATING IN A LIQUID A Thesis JOHN ROBERT NASSEY Approved as to style and content by Chairman of Committee ~c, Pr. ~ ~a ~- Head of De@'artment of Mechanical Engineering A DETERMINATION... August l952 Ma)or Sub]ectt Mechanical Engineering AC KIOWLEDOWEKT The writer wishes to express appreciation for advice and enoouragement reoeived during the preparation of this thesis from Professors E, S. Holdredge and R. M. Wlngren, TABLF. OF CO...

Massey, John Robert

1952-01-01T23:59:59.000Z

325

Interacting holographic dark energy model and generalized second law of thermodynamics in non-flat universe  

E-Print Network (OSTI)

In the present paper we consider the interacting holographic model of dark energy to investigate the validity of the generalized second laws of thermodynamics in non-flat (closed) universe enclosed by the event horizon measured from the sphere of the horizon named $L$. We show that for $L$ as the system's IR cut-off the generalized second law is respected for the special range of the deceleration parameter.

M. R. Setare

2007-01-26T23:59:59.000Z

326

Historical Exposures to Chemicals at the Rocky Flats Nuclear Weapons Plant: A Pilot Retrospective Exposure Assessment  

SciTech Connect

In a mortality study of white males who had worked at the Rocky Flats Nuclear Weapons Plant between 1952 and 1979, an increased number of deaths from benign and unspecified intracranial neoplasms was found. A case-control study nested within this cohort investigated the hypothesis that an association existed between brain tumor death and exposure to either internally deposited plutonium or external ionizing radiation. There was no statistically significant association found between estimated radiation exposure from internally deposited plutonium and the development of brain tumors. Exposure by job or work area showed no significant difference between the cohort and the control groups. An update of the study found elevated risk estimates for (1) all lymphopoietic neoplasms, and (2) all causes of death in employees with body burdens greater than or equal to two nanocuries of plutonium. There was an excess of brain tumors for the entire cohort. Similar cohort studies conducted on worker populations from other plutonium handling facilities have not yet shown any elevated risks for brain tumors. Historically, the Rocky Flats Nuclear Weapons Plant used large quantities of chemicals in their production operations. The use of solvents, particularly carbon tetrachloride, was unique to Rocky Flats. No investigation of the possible confounding effects of chemical exposures was done in the initial studies. The objectives of the present study are to (1) investigate the history of chemical use at the Rocky Flats facility; (2) locate and analyze chemical monitoring information in order to assess employee exposure to the chemicals that were used in the highest volume; and (3) determine the feasibility of establishing a chemical exposure assessment model that could be used in future epidemiology studies.

Janeen Denise Robertson

1999-02-01T23:59:59.000Z

327

Criticality safety evaluation of Rocky Flats Plant one-gallon shipping containers  

SciTech Connect

Criticality safety calculations have been performed to provide an analytical basis for handling, storage and transport of Rocky Flats Plant (RFP) one-gallon shipping containers. A mass limit was establish for metal (solid uranium or plutonium) and slurries (undissolved U or Pu solids in a ``mud,`` ``sludge,`` or ``slurry``). A separate volume limit was developed for plutonium solutions (liquids, either aqueous or organic, containing no visible undissolved solids).

Shaw, M.E.

1991-12-01T23:59:59.000Z

328

Criticality safety evaluation of Rocky Flats Plant one-gallon shipping containers  

SciTech Connect

Criticality safety calculations have been performed to provide an analytical basis for handling, storage and transport of Rocky Flats Plant (RFP) one-gallon shipping containers. A mass limit was establish for metal (solid uranium or plutonium) and slurries (undissolved U or Pu solids in a mud,'' sludge,'' or slurry''). A separate volume limit was developed for plutonium solutions (liquids, either aqueous or organic, containing no visible undissolved solids).

Shaw, M.E.

1991-12-01T23:59:59.000Z

329

A low emittance, flat-beam electron source for linear colliders  

Science Journals Connector (OSTI)

We present a method to generate a flat (large horizontal to vertical emittance ratio) electron beam suitable for linear colliders. The concept is based on a round-beam rf photoinjector with finite solenoid field at the cathode together with a special beam optics adapter. Computer simulations of this new type of beam source show that the beam quality required for a linear collider may be obtainable without the need for an electron damping ring.

R. Brinkmann; Y. Derbenev; K. Flöttmann

2001-05-18T23:59:59.000Z

330

Initial closure cap and erosion control for the remediation of Maxey Flats  

SciTech Connect

The Record of Decision issued by the U.S. Environmental Protection Agency for remediation of the Maxey Flats Disposal Site (MFDS) included an initial closure cap of exposed geomembrane to limit infiltration into the waste burial trenches and to allow for natural subsidence over a period of one century. To demonstrate the feasibility of a 50-acre initial cap, a conceptual design of the cap was developed and rainfall run-off and soil erosion control were evaluated. The MFDS is located in eastern Kentucky {approximately}10 miles north-west of Morehead. The closest major city is Lexington, which is {approximately}65 miles to the west. Low-level radioactive waste is buried inside a 45-acre fenced enclosure known as the Restricted Area. The Restricted Area is on a spur of Maxey Flats, one of the larger flat-topped ridges in the region. The Restricted Area is bounded by steep slopes to the west, east, and south and is about 300 ft above the adjacent valley floor.

Basinger, D.L.; Cannon, R.P.; Cockrell, R.G.

1994-12-31T23:59:59.000Z

331

Measurements of solar flux density distribution on a plane receiver due to a flat heliostat  

SciTech Connect

An experimental facility is designed and manufactured to measure the solar flux density distribution on a central flat receiver due to a single flat heliostat. The tracking mechanism of the heliostat is controlled by two stepping motors, one for tilt angle control and the other for azimuth angle control. A x-y traversing mechanism is also designed and mounted on a vertical central receiver plane, where the solar flux density is to be measured. A miniature solar sensor is mounted on the platform of the traversing mechanism, where it is used to measure the solar flux density distribution on the receiver surface. The sensor is connected to a data acquisition card in a host computer. The two stepping motors of the heliostat tracking mechanism and the two stepping motors of the traversing mechanism are all connected to a controller card in the same host computer. A software `TOWER` is prepared to let the heliostat track the sun, move the platform of the traversing mechanism to the points of a preselected grid, and to measure the solar flux density distribution on the receiver plane. Measurements are carried out using rectangular flat mirrors of different dimensions at several distances from the central receiver. Two types of images were identified on the receiver plane - namely, apparent (or visible) and mirror-reflected radiation images. Comparison between measurements and a mathematical model validates the mathematical model. 13 refs., 12 figs., 1 tab.

Elsayed, M.M.; Fathalah, K.A.; Al-Rabghi, O.M. [King Abdulaziz Univ., Jeddah (Saudi Arabia)] [King Abdulaziz Univ., Jeddah (Saudi Arabia)

1995-06-01T23:59:59.000Z

332

Analysis of offsite emergency planning zones for the Rocky Flats Plant  

SciTech Connect

The objective of this report is to fully document technical data and information that have been developed to support offsite emergency planning by the State of Colorado for potential accidents at the Rocky Flats Plant. Specifically, this report documents information and data that will assist the State of Colorado in upgrading its radiological emergency planning zones for Rocky Flats Plant. The Colorado Division of Disaster Emergency Services (DODES) and the Colorado Department of Health (CDH) represent the primary audience for this report. The secondary audience for this document includes the Rocky Flats Plant; federal, State, and local governmental agencies; the scientific community; and the interested public. Because the primary audience has a pre-existing background on the subject, this report assumes some exposure to emergency planning, health physics, and dispersion modeling on the part of the reader. The authors have limited their assumptions of background knowledge as much as possible, recognizing that the topics addressed in the report may be new to some secondary audiences.

Hodgin, C.R.; Daugherty, N.M.; Smith, M.L. (EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant); Bunch, D.; Toresdahl, J.; Verholek, M.G. (TENERA, L.P., Knoxville, TN (United States))

1991-01-01T23:59:59.000Z

333

Finding of no significant impact. Consolidation and interim storage of special nuclear material at Rocky Flats Environmental Technology Site  

SciTech Connect

The Department of Energy (DOE) has prepared an environmental assessment (EA), DOE/EA -- 1060, for the consolidation, processing, and interim storage of Category I and II special nuclear material (SNM) in Building 371 at the Rocky Flats Environmental Technology Site (hereinafter referred to as Rocky Flats or Site), Golden, Colorado. The scope of the EA included alternatives for interim storage including the no action alternative, the construction of a new facility for interim storage at Rocky Flats, and shipment to other DOE facilities for interim storage.

NONE

1995-06-01T23:59:59.000Z

334

Flat versus normal subduction zones: a comparison based on 3-D regional traveltime tomography and petrological modelling of central Chile and western Argentina (29°–35°S)  

Science Journals Connector (OSTI)

......been linked to an ancient flat slab episode of the Farallon...the central Chilean flat subduction is considered a modern analogue of the Rocky Mountain Laramide Province...a modern analogue of Rocky Mountain foreland deformation...of the central Andean flat-slab between 30S and......

M. Marot; T. Monfret; M. Gerbault; G. Nolet; G. Ranalli; M. Pardo

2014-01-01T23:59:59.000Z

335

Heat efficiency of “translucent cover-radiation absorbing heat-exchange panel” system of flat solar collectors  

Science Journals Connector (OSTI)

An analytic expression is proposed for determining the heat efficiency of the “translucent cover-radiation absorbing heat-exchange panel” system of flat solar collectors, and on its base the heat efficiency of th...

R. R. Avezov; N. R. Avezova

2008-09-01T23:59:59.000Z

336

Numerical Study of Convective Heat Transfer in Flat Tube Heat Exchangers Operating in Self-Sustained Oscillatory Flow Regimes  

E-Print Network (OSTI)

Laminar, two-dimensional, constant-property numerical simulations of flat tube heat exchanger devices operating in flow regimes in which self-sustained oscillations occur were performed. The unsteady flow regimes were transition flow regimes...

Fullerton, Tracy

2012-02-14T23:59:59.000Z

337

A comparison of workstation dimensions and body postures between 17" CRT, 21" CRT, and 19" flat panel monitors  

E-Print Network (OSTI)

Use of visual display terminals has been implicated as a risk factor in visual discomfort. With the progression of new technology, larger CRT monitors and alternate display technologies, such as flat panels, are entering the office environment. Few...

Walline, Erin Kurusz

2012-06-07T23:59:59.000Z

338

Review of solar thermoelectric energy conversion and analysis of a two cover flat-plate solar collector  

E-Print Network (OSTI)

The process of solar thermoelectric energy conversion was explored through a review of thermoelectric energy generation and solar collectors. Existing forms of flat plate collectors and solar concentrators were surveyed. ...

Hasan, Atiya

2007-01-01T23:59:59.000Z

339

X-Ray Absorption Spectroscopy of Plutonium Particles at the Rocky Flats US Nuclear Weapons Production Site  

Science Journals Connector (OSTI)

The Rocky Flats Environmental Technology Site (RFETS) was a...2. This information coupled with ultrafiltration studies was used to make the case for particle transport mechanisms as the basis of plutonium and ame...

Steven D. Conradson; David L. Clark; Christophe den Auwer…

2011-01-01T23:59:59.000Z

340

Results of Soil Vapor Extraction of a Chlorinated Solvent Dnapl Waste Site at the Rocky Flats Superfund Site  

Science Journals Connector (OSTI)

A full scale Soil Vapor Extraction (SVE) system was evaluated for remediation of subsurface contamination of the chlorinated Dense Non-Aqueous Phase Liquids (DNAPL) at a waste site at the Rocky Flats Environmenta...

S. Grace; E. Dille

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

AN INFRARED CENSUS OF STAR FORMATION IN THE HORSEHEAD NEBULA  

SciTech Connect

At {approx} 400 pc, the Horsehead Nebula (B33) is the closest radiatively sculpted pillar to the Sun, but the state and extent of star formation in this structure is not well understood. We present deep near-infrared (IRSF/SIRIUS JHK {sub S}) and mid-infrared (Spitzer/IRAC) observations of the Horsehead Nebula to characterize the star-forming properties of this region and to assess the likelihood of triggered star formation. Infrared color-color and color-magnitude diagrams are used to identify young stars based on infrared excess emission and positions to the right of the zero-age main sequence, respectively. Of the 45 sources detected at both near- and mid-infrared wavelengths, three bona fide and five candidate young stars are identified in this 7' x 7' region. Two bona fide young stars have flat infrared spectral energy distributions and are located at the western irradiated tip of the pillar. The spatial coincidence of the protostars at the leading edge of this elephant trunk is consistent with the radiation-driven implosion model of triggered star formation. There is no evidence, however, for sequential star formation within the immediate {approx} 1.'5 (0.17 pc) region from the cloud/H II region interface.

Bowler, Brendan P. [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States); Waller, William H. [Department of Physics and Astronomy, Tufts University, Medford, MA 02155 (United States); Megeath, S. Thomas [Department of Physics and Astronomy, University of Toledo, Toledo, OH 43606 (United States); Patten, Brian M. [National Science Foundation, 4201 Wilson Blvd. Arlington, VA 22230 (United States); Tamura, Motohide [National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588 (Japan)], E-mail: bpbowler@ifa.hawaii.edu, E-mail: william.waller@tufts.edu, E-mail: megeath@physics.utoledo.edu, E-mail: bpatten@nsf.gov, E-mail: motohide.tamura@nao.ac.jp

2009-03-15T23:59:59.000Z

342

Property:OpenEI/UtilityRate/FlatDemandMonth2 | Open Energy Information  

Open Energy Info (EERE)

FlatDemandMonth2 FlatDemandMonth2 Jump to: navigation, search This is a property of type Number. The allowed values for this property are: 1 2 3 4 5 6 7 8 9 Pages using the property "OpenEI/UtilityRate/FlatDemandMonth2" Showing 25 pages using this property. (previous 25) (next 25) 0 0000827d-84d0-453d-b659-b86869323897 + 1 + 000e60f7-120d-48ab-a1f9-9c195329c628 + 1 + 00101108-073b-4503-9cd4-01769611c26f + 1 + 001361ca-50d2-49bc-b331-08755a2c7c7d + 1 + 0016f771-cda9-4312-afc2-63f10c8d8bf5 + 1 + 00178d3d-17cb-46ed-8a58-24c816ddce96 + 1 + 001d1952-955c-411b-8ce4-3d146852a75e + 1 + 001ea8be-7a59-4bcb-a923-e8f1015946ee + 1 + 001eaca9-6ce7-4c0f-8578-44fc29654e97 + 1 + 0022e9a5-942c-4e97-94d7-600f5d315ce8 + 1 + 002661b8-2e71-48b8-b657-44ff7372f757 + 1 + 0026b4d3-dd02-4423-95e1-56430d887b28 + 2 +

343

Property:OpenEI/UtilityRate/FlatDemandMonth4 | Open Energy Information  

Open Energy Info (EERE)

FlatDemandMonth4 FlatDemandMonth4 Jump to: navigation, search This is a property of type Number. The allowed values for this property are: 1 2 3 4 5 6 7 8 9 Pages using the property "OpenEI/UtilityRate/FlatDemandMonth4" Showing 25 pages using this property. (previous 25) (next 25) 0 0000827d-84d0-453d-b659-b86869323897 + 1 + 000e60f7-120d-48ab-a1f9-9c195329c628 + 1 + 00101108-073b-4503-9cd4-01769611c26f + 1 + 001361ca-50d2-49bc-b331-08755a2c7c7d + 1 + 0016f771-cda9-4312-afc2-63f10c8d8bf5 + 1 + 00178d3d-17cb-46ed-8a58-24c816ddce96 + 1 + 001d1952-955c-411b-8ce4-3d146852a75e + 1 + 001ea8be-7a59-4bcb-a923-e8f1015946ee + 1 + 001eaca9-6ce7-4c0f-8578-44fc29654e97 + 1 + 0022e9a5-942c-4e97-94d7-600f5d315ce8 + 1 + 002661b8-2e71-48b8-b657-44ff7372f757 + 1 + 0026b4d3-dd02-4423-95e1-56430d887b28 + 2 +

344

Property:OpenEI/UtilityRate/FlatDemandMonth7 | Open Energy Information  

Open Energy Info (EERE)

FlatDemandMonth7 FlatDemandMonth7 Jump to: navigation, search This is a property of type Number. The allowed values for this property are: 1 2 3 4 5 6 7 8 9 Pages using the property "OpenEI/UtilityRate/FlatDemandMonth7" Showing 25 pages using this property. (previous 25) (next 25) 0 0000827d-84d0-453d-b659-b86869323897 + 1 + 000e60f7-120d-48ab-a1f9-9c195329c628 + 1 + 00101108-073b-4503-9cd4-01769611c26f + 1 + 001361ca-50d2-49bc-b331-08755a2c7c7d + 1 + 0016f771-cda9-4312-afc2-63f10c8d8bf5 + 1 + 00178d3d-17cb-46ed-8a58-24c816ddce96 + 1 + 001d1952-955c-411b-8ce4-3d146852a75e + 1 + 001ea8be-7a59-4bcb-a923-e8f1015946ee + 1 + 001eaca9-6ce7-4c0f-8578-44fc29654e97 + 1 + 0022e9a5-942c-4e97-94d7-600f5d315ce8 + 1 + 002661b8-2e71-48b8-b657-44ff7372f757 + 1 + 0026b4d3-dd02-4423-95e1-56430d887b28 + 1 +

345

Property:OpenEI/UtilityRate/FlatDemandMonth1 | Open Energy Information  

Open Energy Info (EERE)

FlatDemandMonth1 FlatDemandMonth1 Jump to: navigation, search This is a property of type Number. The allowed values for this property are: 1 2 3 4 5 6 7 8 9 Pages using the property "OpenEI/UtilityRate/FlatDemandMonth1" Showing 25 pages using this property. (previous 25) (next 25) 0 0000827d-84d0-453d-b659-b86869323897 + 1 + 000e60f7-120d-48ab-a1f9-9c195329c628 + 1 + 00101108-073b-4503-9cd4-01769611c26f + 1 + 001361ca-50d2-49bc-b331-08755a2c7c7d + 1 + 0016f771-cda9-4312-afc2-63f10c8d8bf5 + 1 + 00178d3d-17cb-46ed-8a58-24c816ddce96 + 1 + 001d1952-955c-411b-8ce4-3d146852a75e + 1 + 001ea8be-7a59-4bcb-a923-e8f1015946ee + 1 + 001eaca9-6ce7-4c0f-8578-44fc29654e97 + 1 + 0022e9a5-942c-4e97-94d7-600f5d315ce8 + 1 + 002661b8-2e71-48b8-b657-44ff7372f757 + 1 + 0026b4d3-dd02-4423-95e1-56430d887b28 + 2 +

346

Property:OpenEI/UtilityRate/FlatDemandMonth6 | Open Energy Information  

Open Energy Info (EERE)

FlatDemandMonth6 FlatDemandMonth6 Jump to: navigation, search This is a property of type Number. The allowed values for this property are: 1 2 3 4 5 6 7 8 9 Pages using the property "OpenEI/UtilityRate/FlatDemandMonth6" Showing 25 pages using this property. (previous 25) (next 25) 0 0000827d-84d0-453d-b659-b86869323897 + 1 + 000e60f7-120d-48ab-a1f9-9c195329c628 + 1 + 00101108-073b-4503-9cd4-01769611c26f + 1 + 001361ca-50d2-49bc-b331-08755a2c7c7d + 1 + 0016f771-cda9-4312-afc2-63f10c8d8bf5 + 1 + 00178d3d-17cb-46ed-8a58-24c816ddce96 + 1 + 001d1952-955c-411b-8ce4-3d146852a75e + 1 + 001ea8be-7a59-4bcb-a923-e8f1015946ee + 1 + 001eaca9-6ce7-4c0f-8578-44fc29654e97 + 1 + 0022e9a5-942c-4e97-94d7-600f5d315ce8 + 1 + 002661b8-2e71-48b8-b657-44ff7372f757 + 1 + 0026b4d3-dd02-4423-95e1-56430d887b28 + 1 +

347

Property:OpenEI/UtilityRate/FlatDemandMonth5 | Open Energy Information  

Open Energy Info (EERE)

FlatDemandMonth5 FlatDemandMonth5 Jump to: navigation, search This is a property of type Number. The allowed values for this property are: 1 2 3 4 5 6 7 8 9 Pages using the property "OpenEI/UtilityRate/FlatDemandMonth5" Showing 25 pages using this property. (previous 25) (next 25) 0 0000827d-84d0-453d-b659-b86869323897 + 1 + 000e60f7-120d-48ab-a1f9-9c195329c628 + 1 + 00101108-073b-4503-9cd4-01769611c26f + 1 + 001361ca-50d2-49bc-b331-08755a2c7c7d + 1 + 0016f771-cda9-4312-afc2-63f10c8d8bf5 + 1 + 00178d3d-17cb-46ed-8a58-24c816ddce96 + 1 + 001d1952-955c-411b-8ce4-3d146852a75e + 1 + 001ea8be-7a59-4bcb-a923-e8f1015946ee + 1 + 001eaca9-6ce7-4c0f-8578-44fc29654e97 + 1 + 0022e9a5-942c-4e97-94d7-600f5d315ce8 + 1 + 002661b8-2e71-48b8-b657-44ff7372f757 + 1 + 0026b4d3-dd02-4423-95e1-56430d887b28 + 1 +

348

Property:OpenEI/UtilityRate/FlatDemandMonth3 | Open Energy Information  

Open Energy Info (EERE)

FlatDemandMonth3 FlatDemandMonth3 Jump to: navigation, search This is a property of type Number. The allowed values for this property are: 1 2 3 4 5 6 7 8 9 Pages using the property "OpenEI/UtilityRate/FlatDemandMonth3" Showing 25 pages using this property. (previous 25) (next 25) 0 0000827d-84d0-453d-b659-b86869323897 + 1 + 000e60f7-120d-48ab-a1f9-9c195329c628 + 1 + 00101108-073b-4503-9cd4-01769611c26f + 1 + 001361ca-50d2-49bc-b331-08755a2c7c7d + 1 + 0016f771-cda9-4312-afc2-63f10c8d8bf5 + 1 + 00178d3d-17cb-46ed-8a58-24c816ddce96 + 1 + 001d1952-955c-411b-8ce4-3d146852a75e + 1 + 001ea8be-7a59-4bcb-a923-e8f1015946ee + 1 + 001eaca9-6ce7-4c0f-8578-44fc29654e97 + 1 + 0022e9a5-942c-4e97-94d7-600f5d315ce8 + 1 + 002661b8-2e71-48b8-b657-44ff7372f757 + 1 + 0026b4d3-dd02-4423-95e1-56430d887b28 + 2 +

349

Trench water-soil chemistry and interactions at the Maxey Flats Site-II  

SciTech Connect

The chemistry of leachates in the Maxey Flats trenches is an important factor in evaluating the site's effectiveness for retaining radionuclides. Trench water composition reflects interactions of the buried waste with infiltrating groundwater and the effects of bacterial decomposition of organic material. Aerobic, anaerobic, sulfate reducing, denitrifying and methanogenic bacteria are present in the leachates. Bacterial processes cause decreases in redox potential (Eh), sulfate and nitrate concentrations, as well as increases in alkalinity and ammonia relative to local groundwater compositions. The major radionuclides of concern present in trench waters include: /sup 3/H, /sup 60/Co, /sup 90/Sr, /sup 134, 137/Cs, /sup 241/Am, and /sup 238, 239, 240/Pu. Several additional laboratory and field analyses were performed on the fourth sampling of trench waters to better characterize the waters and to assure the reliability of some procedures. New procedures include: sulfide ion measurement in the field; laboratory ion chromatographic determinations of sulfate, chloride, and bromide; Eh and pH measurements in the laboratory; and ferrous-ferric concentration ratios by a colorimetric procedure. No overall systematic change in any disposal trench was observed. Analysis of water collected from the experimental interceptor trenches at Maxey Flats shows a chemical composition intermediate between disposal trench water and local groundwater. The existence of organo-radionuclide complexes that may enhance radionuclide mobility is a subject of much concern in waste management. Low concentrations of free EDTA, NTA, and DTPA are present in some leachates. Sorption experiments demonstrated the ability of EDTA to lower the apparent sorption capacity of Maxey Flats shale. 21 refs., 8 figs., 6 tabs.

Weiss, A.J.; Czyscinski, K.S.; Pietrzak, R.F.

1981-08-01T23:59:59.000Z

350

Exact formulas for random growth with half-flat initial data  

E-Print Network (OSTI)

We obtain exact formulas for moments and generating functions of the height function of the asymmetric simple exclusion process at one spatial point, starting from special initial data in which every positive even site is initially occupied. These complement earlier formulas of E. Lee [Lee10] but, unlike those formulas, ours are suitable in principle for asymptotics. We also explain how our formulas are related to divergent series formulas for half-flat KPZ of Le Doussal and Calabrese [LDC12], which we also recover using the methods of this paper. In the long time limit, formal asymptotics show that the fluctuations are given by the Airy$_{2\\to1}$ marginals.

Janosch Ortmann; Jeremy Quastel; Daniel Remenik

2015-01-20T23:59:59.000Z

351

Integrated Weed Control for Land Stewardship at Legacy Management's Rocky Flats Site in Colorado - 13086  

SciTech Connect

Land stewardship is one of nine sustainability programs in the U.S. Department of Energy's Environmental Management System. Land stewardship includes maintaining and improving ecosystem health. At the Rocky Flats Site near Westminster, Colorado, land stewardship is an integral component of the Office of Legacy Management's post-closure monitoring and management at the site. Nearly 263 hectares (650 acres) were disturbed and re-vegetated during site cleanup and closure operations. Proactive management of revegetation areas is critical to the successful reestablishment of native grasslands, wetlands, and riparian communities. The undisturbed native plant communities that occur at the site also require active management to maintain the high-quality wetlands and other habitats that are home to numerous species of birds and other wildlife such as elk and deer, rare plant communities, and the federally listed threatened Preble's meadow jumping mouse. Over the past several decades, an increase of Noxious weeds has impacted much of Colorado's Front Range. As a result, weed control is a key component of the land stewardship program at Rocky Flats. Thirty-three species of state-listed Noxious weeds are known to occur in the Central and Peripheral Operable Units at Rocky Flats, along with another five species that are considered invasive at the site. Early detection and rapid response to control new invasive species is crucial to the program. An integrated weed control/vegetation management approach is key to maintaining healthy, sustainable plant communities that are able to resist Noxious weed invasions. Weed mapping, field surveys, and field-staff training sessions (to learn how to identify new potential problem species) are conducted to help detect and prevent new weed problems. The integrated approach at Rocky Flats includes administrative and cultural techniques (prevention), mechanical controls, biological controls, and chemical controls. Several species of biocontrol insects have been released to assist with control of different target weed species. Monitoring is conducted to evaluate the effectiveness of control efforts and to provide information for future control efforts. The effective implementation of this integrated approach has reduced the infestation levels of many species and has kept several newly discovered invasive species from spreading and becoming larger problems at the site. (authors)

Nelson, Jody K. [Stoller LMS Team, Contractor to the U.S. Department of Energy Office of Legacy Management, 11025 Dover Street, Suite 1000, Westminster, Colorado 80021 (United States)] [Stoller LMS Team, Contractor to the U.S. Department of Energy Office of Legacy Management, 11025 Dover Street, Suite 1000, Westminster, Colorado 80021 (United States)

2013-07-01T23:59:59.000Z

352

HYDROGEN DATA FROM LOS ALAMOS [LANL] & SAVANNAH RIVER [SRC] & ROCKY FLATS [RFE] [SEC 1 & 2  

SciTech Connect

A DOE letter dated August 14, 2001 requested that a detailed analysis of the expected probability of accumulation of significant quantities of hydrogen gas in unvented drums and a plan and schedule for venting drums be prepared and submitted. In response to the letter a document was prepared that included data of hydrogen concentrations in TRU waste drums. Data was collected from Savannah River Site, Los Alamos National Laboratory, and Rocky Flats Environmental Technology Site. These data were analyzed to provide the basis for evaluating the probability that significant quantities of hydrogen will accumulate in the unvented TRU drums stored at Hanford.

DAYLEY, L.

2001-11-19T23:59:59.000Z

353

Implementation of IAEA safeguards at the Rocky Flats Environmental Technology Site  

SciTech Connect

When President Clinton spoke to the United Nations General Assembly in September 1993, he offered to place US excess defense nuclear material under International Atomic Energy Agency (IAEA) safeguards, before the next Nuclear Nonproliferation Treaty (NPT) Extension Conference. This set in motion a flurry of activities at three DOE facilities, including Rocky Flats Environmental Technology Site (Site). With general guidance from DOE Headquarters, the facility selected a suitable storage area, identified appropriate materials, and acquired the necessary instrumentation to implement full-scale IAEA safeguards on excess plutonium oxide.

Giacomini, J.J.; Finleon, C.A.; Larsen, R.K. [EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant; Lucas, M.; Langner, D. [Los Alamos National Lab., NM (United States)

1995-07-01T23:59:59.000Z

354

Rebaselining seismic risks for resumption of Building 707 plutonium operations at the Rocky Flats Plant  

SciTech Connect

Natural phenomena risks have been assessed for plutonium handling facilities at the Rocky Flats Plant, based on numerous studies performed for the Department of Energy Natural Phenomena Hazards Project. The risk assessment was originally utilized in the facilities Final Safety Analysis Reports and in subsequent risk management decisions. Plutonium production operations were curtailed in 1989 in order for a new operating contractor to implement safety improvements. Since natural phenomena events dominated risks to the public, a re-assessment of these events were undertaken for resumption of plutonium operations.

Elia, F. Jr. [Stone and Webster Engineering Corp., Boston, MA (United States); Foppe, T.; Stahlnecker, E. [EG and G Rocky Flats, Inc., Golden, CO (United States)

1993-08-01T23:59:59.000Z

355

Environmental Assessment for the LGF Spill Test Facility at Frenchman Flat, Nevada Test Site  

SciTech Connect

The LGF Spill Test Facility at Frenchman Flat, Nevada Test Site, is being constructed by the United States Department of Energy (DOE). In this Environmental Assessment, environmental consequences of spilling hazardous materials in the Frenchman Flat basin are evaluated and mitigations and recommendations are stated in order to protect natural resources and reduce land-use impacts. Guidelines and restrictions concerning spill-test procedures will be determined by the LGF Test Facility Operations Manager and DOE based on toxicity documentation for the test material, provided by the user, and mitigations imposed by the Environmental Assessment. In addition to Spill Test Facility operational procedures, certain assumptions have been made in preparation of this document: no materials will be considered for testing that have cumulative, long-term persistence in the environment; spill tests will consist of releases of 15 min or less; and sufficient time will be allowed between tests for recovery of natural resources. Geographic limits to downwind concentrations of spill materials were primarily determined from meteorological data, human occupational exposure standards to hazardous materials and previous spill tests. These limits were established using maximum spill scenarios and environmental impacts are discussed as worst case scenarios; however, spill-test series will begin with smaller spills, gradually increasing in size after the impacts of the initial tests have been evaluated.

Patton, S.E.; Novo, M.G.; Shinn, J.H.

1986-04-01T23:59:59.000Z

356

The Identification of EGRET Sources with Flat-Spectrum Radio Sources  

E-Print Network (OSTI)

We present a method to assess the reliability of the identification of EGRET sources with extragalactic radio sources. We verify that EGRET is detecting the blazar class of AGN. However, many published identifications are found to be questionable. We provide a table of 42 blazars which we expect to be robust identifications of EGRET sources. This includes one previously unidentified EGRET source, the lensed AGN PKS 1830-210 near the direction of the Galactic center. We provide the best available positions for 16 more radio sources which are also potential identifications for previously unidentified EGRET sources. All high Galactic latitude EGRET sources (b>3 degrees) which demonstrate significant variability can be identified with flat spectrum radio sources. This suggests that EGRET is not detecting any type of AGN other than blazars. This identification method has been used to establish with 99.998% confidence that the peak gamma-ray flux of a blazar is correlated with its average 5 GHz radio flux. An even better correlation is seen between gamma-ray flux and the 2.29 GHz flux density measured with VLBI at the base of the radio jet. Also, using high confidence identifications, we find that the radio sources identified with EGRET sources have larger correlated VLBI flux densities than the parent population of flat radio spectrum sources.

J. R. Mattox; J. Schachter; L. Molnar; R. C. Hartman; A. R. Patnaik

1996-12-18T23:59:59.000Z

357

Holographic \\Lambda(t)CDM model in a non-flat universe  

E-Print Network (OSTI)

The holographic $\\Lambda(t)$CDM model in a non-flat universe is studied in this paper. In this model, to keep the form of the stress-energy of the vacuum required from the general covariance, the holographic vacuum is enforced to exchange energy with dark matter. It is demonstrated that for the holographic model the best choice for the IR cutoff of the effective quantum field theory is the event horizon size of the universe. We derive the evolution equations of the holographic $\\Lambda(t)$CDM model in a non-flat universe. We constrain the model by using the current observational data, including the 557 Union2 type Ia supernovae data, the cosmic microwave background anisotropy data from the 7-yr WMAP, and the baryon acoustic oscillation data from the SDSS. Our fit results show that the holographic $\\Lambda(t)$CDM model tends to favor a spatially closed universe (the best-fit value of $\\Omega_{k0}$ is -0.042), and the 95% confidence level range for the spatial curvature is $-0.101<\\Omega_{k0}<0.040$. We s...

Zhang, Jing-Fei; Liu, Ying; Zou, Sheng; Zhang, Xin

2012-01-01T23:59:59.000Z

358

Preliminary Measurements From A New Flat Plate Facility For Aerodynamic Research  

SciTech Connect

This paper details the design and preliminary measurements used in the characterisation of a new flat plate research facility. The facility is designed specifically to aid in the understanding of entropy generation throughout the boundary layer with special attention given to non-equilibrium flows. Hot-wire measurements were obtained downstream of two turbulence generating grids. The turbulence intensity, integral and dissipation length scale ranges measured are 1.6%-7%, 5mm-17mm and 0.7mm-7mm, respectively. These values compared well to existing correlations. The flow downstream of both grids was found to be homogenous and isotropic. Flow visualisation is employed to determine aerodynamic parameters such as flow 2-dimensionality and the effect of the flap angle on preventing separation at the leading edge. The flow was found to be 2-dimensional over all measurement planes. The non-dimensional pressure distribution of a modern turbine blade suction surface is simulated on the flat plate through the use of a variable upper wall. The Reynolds number range based on wetted plate length and inlet velocity is 70,000-4,000,000.

D. M. McEligot; D. W. Nigg; E. J. Walsh; D. Hernon; M.R.D. Davies

2005-03-01T23:59:59.000Z

359

Measurements of Conversion Efficiency for a Flat Plate Thermophotovoltaic System Using a Photonic Cavity Test System  

SciTech Connect

The performance of a 1 cm{sup 2} thermophotovoltaic (TPV) module was recently measured in a photonic cavity test system. A conversion efficiency of 11.7% was measured at a radiator temperature of 1076 C and a module temperature of 29.9 C. This experiment achieved the highest direct measurement of efficiency for an integrated TPV system. Efficiency was calculated from the ratio of the peak (load matched) electrical power output and the heat absorption rate. Measurements of these two parameters were made simultaneously to assure the validity of the measured efficiency value. This test was conducted in a photonic cavity which mimicked a typical flat-plate TPV system. The radiator was a large, flat graphite surface. The module was affixed to the top of a copper pedestal for heat absorption measurements. The heat absorption rate was proportional to the axial temperature gradient in the pedestal under steady-state conditions. The test was run in a vacuum to eliminate conductive and convective heat transfer mechanisms. The photonic cavity provides the optimal test environment for TPV efficiency measurements because it incorporates all important physical phenomena found in an integrated TPV system: high radiator emissivity and blackbody spectral shape, photon recycling, Lambertian distribution of incident radiation and complex geometric effects. Furthermore, the large aspect ratio between radiating surface area and radiator/module spacing produces a view factor approaching unity with minimal photon leakage.

E.J. Brown; C.T. Ballinger; S.R. Burger; G.W. Charache; L.R. Danielson; D.M. DePoy; T.J. Donovan; M. LoCascio

2000-05-30T23:59:59.000Z

360

Rocky Flats Closure: the Role of Models in Facilitating Scientific Communication With Stakeholder Groups  

SciTech Connect

The Rocky Flats Environmental Technology Site (RFETS) was a U.S. Department of Energy (DOE) environmental cleanup site for a previous manufacturing plant that made components for the U.S. nuclear weapons arsenal. The facility was shut down in 1989 to address environmental and safety concerns, and left behind a legacy of contaminated facilities, soils, surface and ground water. In 1995, the Site contractor established the Actinide Migration Evaluation (AME) advisory group to provide advice and technical expertise on issues of actinide behavior and mobility in the air, surface water, groundwater, and soil. Through a combination of expert judgment supported by state-of-the-art scientific measurements, it was shown that under environmental conditions at Rocky Flats, plutonium and americium form insoluble oxides that adhere to small soil, organic, and mineral particles and colloids, or are colloidal materials themselves. A series of models ranging from conceptual, geostatistical, and large-scale wind and surface water erosion models were used to guide stakeholder interactions. The nature of these models, and their use in public communication is described.

Clark, D.L.; Choppin, G.R.; Dayton, C.S.; Janecky, D.R.; Lane, L.J.; Paton, I.

2009-05-28T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Reactive barrier technologies for treatment of contaminated groundwater at Rocky Flats  

SciTech Connect

The U.S. Department of Energy (DOE) Office of Science and Technology Subsurface Contaminants Focus Area is supporting the investigation of reactive barrier technologies to mitigate the risks associated with mixed organic/radioactive waste at several DOE sites. Groundwater from a small contaminated plume at the Rocky Flats Environmental Technology Site (RFETS) is being used to evaluate passive reactive material treatment. Permeable reactive barriers which intercept contaminants and destroy the VOC component while containing radionuclides are attractive for a number of reasons relating to public and regulatory acceptance. In situ treatment keeps contaminants away from the earth`s surface, there is no above-ground treatment equipment that could expose workers and the public and operational costs are expected to be lower than currently used technologies. This paper will present results from preliminary site characterization and in-field small-scale column testing of reactive materials at RFETS. Successful demonstration is expected to lead to full-scale implementation of the technology at several DOE sites, including Rocky Flats.

Marozas, D.C.; Bujewski, G.E. [Sandia National Labs., Albuquerque, NM (United States); Castaneda, N. [Rocky Flats Field Office, Golden, CO (United States)

1997-12-31T23:59:59.000Z

362

Safety analyses performed in the Systematic Evaluation Program at Rocky Flats  

SciTech Connect

Structures, systems, and components (SSC) at Rocky Flats were designed and put into operation before current standards and criteria applicable to these SSCs were developed. The purpose of the Systematic Evaluation Program (SEP) at Rocky Flats (RF) is to systematically compare the design of SSCs to current design requirements and assess the differences to assure that a balanced and integrated level of safety is achieved to support long-term operation of the facilities. The SEP is being performed in three phases. Phase 1, selection of technical subjects (topics) and development of evaluation plans is complete. Phase 2, comparison of the design of structures, systems and components to current design requirements (CDR), is in progress. It is being performed in two parts, Phase 2A and Phase 2B. An Integrated Assessment of the recommendations from Phase 2 will be performed in Phase 3. The RF SEP is not necessarily used to bring the RF facilities into compliance with newer standards, but to ensure that the safety issues addressed by current requirements either do not exist, are acceptably addressed by existing designs, or are addressed by backfit of existing standards into older facilities to the extent appropriate to the concern. For example, administrative controls may provide adequate resolution of issues addressed by design features in more modern facilities.

Badwan, F.M. [EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant; Persinko, D. [Management Strategies, Inc. (United States); Haga, P.B. [Science Applications International Corporation (United States)

1994-06-01T23:59:59.000Z

363

Stabilization of Rocky Flats combustible residues contaminated with plutonium metal and organic solvents  

SciTech Connect

This report describes tests on a proposed flowsheet designed to stabilize combustible residues that were generated at the Rocky Flats Environmental Technology Site (RFETS) during the machining of plutonium metal. Combustible residues are essentially laboratory trash contaminated with halogenated organic solvents and plutonium metal. The proposed flowsheet, designed by RFETS, follows a glovebox procedure that includes (1) the sorting and shredding of materials, (2) a low temperature thermal desorption of solvents from the combustible materials, (3) an oxidation of plutonium metal with steam, and (4) packaging of the stabilized residues. The role of Los Alamos National Laboratory (LANL) in this study was to determine parameters for the low temperature thermal desorption and steam oxidation steps. Thermal desorption of carbon tetrachloride (CCl{sub 4}) was examined using a heated air stream on a Rocky Flats combustible residue surrogate contaminated with CCl{sub 4}. Three types of plutonium metal were oxidized with steam in a LANL glovebox to determine the effectiveness of this procedure for residue stabilization. The results from these LANL experiments are used to recommend parameters for the proposed RFETS stabilization flowsheet.

Bowen, S.M.; Cisneros, M.R.; Jacobson, L.L.; Schroeder, N.C.; Ames, R.L.

1998-09-30T23:59:59.000Z

364

Rocky Flats closure: The role of models in facilitating scientific communication with stakeholder groups  

Science Journals Connector (OSTI)

The Rocky Flats Environmental Technology Site (RFETS) was a U.S. Department of Energy (DOE) environmental cleanup site for a previous manufacturing plant that made components for the U.S. nuclear weapons arsenal. The facility was shut down in 1989 to address environmental and safety concerns, and left behind a legacy of contaminated facilities, soils, surface and ground water. In 1995, the Site contractor established the Actinide Migration Evaluation (AME) advisory group to provide advice and technical expertise on issues of actinide behavior and mobility in the air, surface water, groundwater, and soil. Through a combination of expert judgment supported by state-of-the-art scientific measurements, it was shown that under environmental conditions at Rocky Flats, plutonium and americium form insoluble oxides that adhere to small soil, organic, and mineral particles and colloids, or are colloidal materials themselves. A series of models ranging from conceptual, geostatistial, and large-scale wind and surface water erosion models were used to guide stakeholder interactions. The nature of these models, and their use in public communication is described.

David L. Clark; Gregory R. Choppin; Christine S. Dayton; David R. Janecky; Leonard J. Lane; Ian Paton

2007-01-01T23:59:59.000Z

365

Community Surveys Low Dose Radiation. Fernald, Ohio and Rocky Flats, Colorado  

E-Print Network (OSTI)

This report is intended to present a basic description of the data from the two community surveys and to document the text of the questions; the methods used for the survey data collection; and a brief overview of the results. Completed surveys were conducted at local communities near the Rocky Flats, Colorado and the Fernald, Ohio sites; no survey was conducted for the Brookhaven, New York site. Fernald. The Fernald sample was randomly selected from 98% of all potential residential telephones in the townships of Ross, Morgan, and Crosby. The only telephone exchanges not used for the Fernald study had 4%, or fewer, of the holders of the telephone numbers actually living in either of the three target townships. Surveying started on July 24, 2001 and finished on August 30, 2001. A total of 399 completed interviews were obtained resulting in a CASRO response rate of 41.8%. The average length of an interview was 16.5 minutes. Rocky Flats. The sample was randomly selected from all potential residential telephones ...

Mertz, C K; Johnson, S; MacGregor, D G; Satterfield, T

2002-01-01T23:59:59.000Z

366

Importance of plutonium contamination on vegetation surfaces at rocky flats, Colorado  

Science Journals Connector (OSTI)

Vegetation samples collected at Rocky Flats, Colorado were ultrasonically washed to remove attached soil and then analyzed for 239, 240Pu and 238Pu. Mean plutonium concentrations for washed grass, forb and shrub samples were 1.12, 0.61, 0.03 pCi/g, respectively. This compared to a mean of 28.6 pCi/g for unwashed vegetation samples from an earlier study conducted in the same area at Rocky Flats. The mean plutonium isotopic ratio (239,240Pu/238Pu) of 27.2 in vegetation was lower than a ratio of 65.4 in soil, indicating possible differential behavior of the plutonium isotopes in vegetation. Soil attachment to above-ground plant parts ranged from 0.0 to 0.25g soil per g plant. The potential for plutonium contamination on plant parts due to soil attachment was estimated to range from 0.0 to 206 pCi/g. Plutonium on vegetation was concluded to be the major contributor to total plutonium associated with vegetation.

W.J. Arthur III; A.W. Alldredge

1982-01-01T23:59:59.000Z

367

Cement waste-form development for ion-exchange resins at the Rocky Flats Plant  

SciTech Connect

This report describes the development of a cement waste form to stabilize ion-exchange resins at Rocky Flats Environmental Technology Site (RFETS). These resins have an elevated potential for ignition due to inadequate wetness and contact with nitrates. The work focused on the preparation and performance evaluation of several Portland cement/resin formulations. The performance standards were chosen to address Waste Isolation Pilot Plant and Environmental Protection Agency Resource Conservation and Recovery Act requirements, compatibility with Rocky Flats equipment, and throughput efficiency. The work was performed with surrogate gel-type Dowex cation- and anion-exchange resins chosen to be representative of the resin inventory at RFETS. Work was initiated with nonactinide resins to establish formulation ranges that would meet performance standards. Results were then verified and refined with actinide-containing resins. The final recommended formulation that passed all performance standards was determined to be a cement/water/resin (C/W/R) wt % ratio of 63/27/10 at a pH of 9 to 12. The recommendations include the acceptable compositional ranges for each component of the C/W/R ratio. Also included in this report are a recommended procedure, an equipment list, and observations/suggestions for implementation at RFETS. In addition, information is included that explains why denitration of the resin is unnecessary for stabilizing its ignitability potential.

Veazey, G.W. [Los Alamos National Labs., NM (United States); Ames, R.L. [Rocky Flats Environmental Technology Site, Golden, CO (United States)

1997-03-01T23:59:59.000Z

368

Microorganisms found in salt flats could offer new path to green hydrogen  

NLE Websites -- All DOE Office Websites (Extended Search)

"Proton pumps" are proteins that typically straddle a cellular membrane and transfer protons from inside the cell to the extracellular space. To view a larger version of the image, click on it. "Proton pumps" are proteins that typically straddle a cellular membrane and transfer protons from inside the cell to the extracellular space. To view a larger version of the image, click on it. "Proton pumps" are proteins that typically straddle a cellular membrane and transfer protons from inside the cell to the extracellular space. To view a larger version of the image, click on it. Microorganisms found in salt flats could offer new path to green hydrogen fuel July 16, 2013 Tweet EmailPrint ARGONNE, Ill. - A protein found in the membranes of ancient microorganisms that live in desert salt flats could offer a new way of using sunlight to generate environmentally friendly hydrogen fuel, according to a new study by researchers at the U.S. Department of

369

Introduction Format Proprietaire -Standard  

E-Print Network (OSTI)

Code for Information Interchange) 4. Unicode IFT-1215 Stefan Monnier 7 #12;BCD IFT-1215 Stefan MonnierSOMMAIRE Introduction Format Propri´etaire -Standard Code Alphanum´erique Entr´ee Alphanum : !, ?, ", (, . . . · Caract`eres sp´eciaux : *, $, ¿, . . . Quelques standards utilis´es pour les coder en binaires 1. BCD

Monnier, Stefan

370

Hierarchical galaxy formation  

Science Journals Connector (OSTI)

......such as the cooling of gas in haloes, the formation...effects on interstellar gas of energy released by young stars, the production of heavy elements, the...dynamics of the cooling gas are calculated in full...relatively small computational cost. The major disadvantage......

Shaun Cole; Cedric G. Lacey; Carlton M. Baugh; Carlos S. Frenk

2000-11-21T23:59:59.000Z

371

Community Surveys: Low Dose Radiation. Fernald, Ohio and Rocky Flats, Colorado  

SciTech Connect

This report is intended to present a basic description of the data from the two community surveys and to document the text of the questions; the methods used for the survey data collection; and a brief overview of the results. Completed surveys were conducted at local communities near the Rocky Flats, Colorado and the Fernald, Ohio sites; no survey was conducted for the Brookhaven, New York site. Fernald. The Fernald sample was randomly selected from 98% of all potential residential telephones in the townships of Ross, Morgan, and Crosby. The only telephone exchanges not used for the Fernald study had 4%, or fewer, of the holders of the telephone numbers actually living in either of the three target townships. Surveying started on July 24, 2001 and finished on August 30, 2001. A total of 399 completed interviews were obtained resulting in a CASRO response rate of 41.8%. The average length of an interview was 16.5 minutes. Rocky Flats. The sample was randomly selected from all potential residential telephones in Arvada and from 99% of the potential telephones in Westminster. Surveying started on August 10, 2001 and finished on September 25, 2001. A total of 401 completed interviews were obtained with a CASRO response rate of 32.5%. The average length of an interview was 15.7 minutes. Overall, respondents hold favorable views of science. They indicate an interest in developments in science and technology, feel that the world is better off because of science, and that science makes our lives healthier, easier, and more comfortable. However, respondents are divided on whether science should decide what is safe or not safe for themselves and their families. The majority of the respondents think that standards for exposure to radiation should be based on what science knows about health effects of radiation and on what is possible with today's technology. Although few respondents had visited the sites, most had heard or read something about Fernald or Rocky Flat s in the media. Impressions of the sites tend to be negative. Most respondents feel that overall their community would be better off without the site. However, when asked about the economic future of their community after cleanup and closure of the site, only 31-43% thought that it will be better, 47-56% thought their local economy will be about the same.

C. K. Mertz; James Flynn; Donald G. MacGregor; Theresa Satterfield; Stephen M. Johnson; Seth Tuler; Thomas Webler

2002-10-16T23:59:59.000Z

372

Effects of boron dopants of Si (001) substrates on formation of Ge layers by sputter epitaxy method  

SciTech Connect

The formation of Ge layers on boron-doped Si (001) substrates by our sputter epitaxy method has been investigated. The surface morphology of Ge layers grown on Si substrates depends on the substrate resistance, and flat Ge layers are obtained on Si substrates with 0.015 ? cm resistivity. Highly boron-doped Si substrates cause a transition in the dislocation structure from complex dislocations with 60° dislocation glide planes to 90° pure-edge dislocations, resulting in the formation of flat Ge layers. Furthermore, we have found that the surface morphology of the Ge layers improves with increasing Ge layer thickness. Ge atoms migrating on the deposited Ge layers tend to position themselves at the reactive sites, where the reactivity is related to the number of bonding contacts between the Ge atom and the surface. This modifies the surface morphology, resulting in a flatter surface. Boron dopants together with the sputter epitaxy method effectively suppress the growth of Ge islands and result in the formation of flat Ge layers.

Tsukamoto, Takahiro; Suda, Yoshiyuki [Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588 (Japan)] [Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588 (Japan); Hirose, Nobumitsu; Kasamatsu, Akifumi; Mimura, Takashi; Matsui, Toshiaki [National Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei, Tokyo 184-8795 (Japan)] [National Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei, Tokyo 184-8795 (Japan)

2013-10-21T23:59:59.000Z

373

Method for formation of thin film transistors on plastic substrates  

DOE Patents (OSTI)

A process for formation of thin film transistors (TFTs) on plastic substrates replaces standard thin film transistor fabrication techniques, and uses sufficiently lower processing temperatures so that inexpensive plastic substrates may be used in place of standard glass, quartz, and silicon wafer-based substrates. The process relies on techniques for depositing semiconductors, dielectrics, and metals at low temperatures; crystallizing and doping semiconductor layers in the TFT with a pulsed energy source; and creating top-gate self-aligned as well as back-gate TFT structures. The process enables the fabrication of amorphous and polycrystalline channel silicon TFTs at temperatures sufficiently low to prevent damage to plastic substrates. The process has use in large area low cost electronics, such as flat panel displays and portable electronics.

Carey, Paul G. (Mountain View, CA); Smith, Patrick M. (San Ramon, CA); Sigmon, Thomas W. (Portola Valley, CA); Aceves, Randy C. (Livermore, CA)

1998-10-06T23:59:59.000Z

374

Method for formation of thin film transistors on plastic substrates  

DOE Patents (OSTI)

A process for formation of thin film transistors (TFTs) on plastic substrates replaces standard thin film transistor fabrication techniques, and uses sufficiently lower processing temperatures so that inexpensive plastic substrates may be used in place of standard glass, quartz, and silicon wafer-based substrates. The process relies on techniques for depositing semiconductors, dielectrics, and metals at low temperatures; crystallizing and doping semiconductor layers in the TFT with a pulsed energy source; and creating top-gate self-aligned as well as back-gate TFT structures. The process enables the fabrication of amorphous and polycrystalline channel silicon TFTs at temperatures sufficiently low to prevent damage to plastic substrates. The process has use in large area low cost electronics, such as flat panel displays and portable electronics. 5 figs.

Carey, P.G.; Smith, P.M.; Sigmon, T.W.; Aceves, R.C.

1998-10-06T23:59:59.000Z

375

Investigation of structural and electrical properties of flat a-Si/c-Si heterostructure fabricated by EBPVD technique  

SciTech Connect

Flat amorphous silicon - crystal silicon (a-Si/c-Si) heterostructure were prepared by ultra-high vacuum electron beam evaporation technique on p-Si (111) and n-Si (100) single crystal substrates. Structural analyses were investigated by XRD, Raman and FEG-SEM analysis. With these analyses we determined that at the least amorphous structure shows modification but amorphous structure just protected. The electrical and photovoltaic properties of flat a-Si/c-Si heterojunction devices were investigated with current-voltage characteristics under dark and illumination conditions. Electrical properties of flat a-Si/c-Si heterorojunction; such as barrier height ?{sub B}, diode ideality factor ? were determined from current-voltage characteristics in dark conditions. These a-Si/c-Si heterostructure have good rectification behavior as a diode and exhibit high photovoltaic sensitivity.

Demiro?lu, D. [Department of Metallurgical and Materials Engineering, Istanbul Technical University, Ayaza?a 34469, Istanbul (Turkey); Tatar, B. [Faculty of Arts and Sciences, Department of Physics, Nam?k Kemal University, De?irmenalt?, Tekirda? (Turkey); Kazmanli, K.; Urgen, M. [Department of Metallurgical and Materials Engineering, Istanbul Technical University, Ayaza?a 34469, Istanbul (Turkey)

2013-12-16T23:59:59.000Z

376

Asymptotically locally AdS and flat black holes in the presence of an electric field in the Horndeski scenario  

E-Print Network (OSTI)

Asymptotically locally AdS and asymptotically flat black hole solutions are found for a particular case of the Horndeski action. The action contains the Einstein-Hilbert term with a cosmological constant, a real scalar field with a non minimal kinetic coupling given by the Einstein tensor, the minimal kinetic coupling and the Maxwell term. There is no scalar potential. The solution has two integration constants related with the mass and the electric charge. The solution is given for all dimensions. A new class of asymptotically locally flat spherically symmetric black holes is found when the minimal kinetic coupling vanishes and the cosmological constant is present. In this case we get a solution which represents an electric Universe. The electric field at infinity is only supported by $\\Lambda$. When the cosmological constant vanishes the black hole is asymptotically flat.

Adolfo Cisterna; Cristián Erices

2014-03-03T23:59:59.000Z

377

Evaluation of safety assessment methodologies in Rocky Flats Risk Assessment Guide (1985) and Building 707 Final Safety Analysis Report (1987)  

SciTech Connect

FSARs. Rockwell International, as operating contractor at the Rocky Flats plant, conducted a safety analysis program during the 1980s. That effort resulted in Final Safety Analysis Reports (FSARs) for several buildings, one of them being the Building 707 Final Safety Analysis Report, June 87 (707FSAR) and a Plant Safety Analysis Report. Rocky Flats Risk Assessment Guide, March 1985 (RFRAG85) documents the methodologies that were used for those FSARs. Resources available for preparation of those Rocky Flats FSARs were very limited. After addressing the more pressing safety issues, some of which are described below, the present contractor (EG&G) intends to conduct a program of upgrading the FSARs. This report presents the results of a review of the methodologies described in RFRAG85 and 707FSAR and contains suggestions that might be incorporated into the methodology for the FSAR upgrade effort.

Walsh, B.; Fisher, C.; Zigler, G.; Clark, R.A. [Science and Engineering Associates, Inc., Albuquerque, NM (United States)

1990-11-09T23:59:59.000Z

378

Hydrocarbon potential of Spearfish Formation in eastern Williston basin  

SciTech Connect

More than 36 million bbl of oil have been produced from stratigraphic traps in sandstones of the Triassic-Jurassic Spearfish Formation in the eastern part of the Williston basin. Newburg field has produced 32 million bbl of oil and Waskada field, discovered in 1980, is estimated to have over 10 million bbl of oil in reserves. A binocular microscopic and petrographic examination of cores from each of the fields has revealed considerable differences in the characteristics of producing sandstones. Cores and sample cuttings from 30 wells in the US and Canada form the basis for this comparison of the two fields. The Spearfish Formation consists of porous, permeable, well-sorted, very fine-grained sandstones with a sucrosic dolomite matrix that are interbedded with impermeable sandstones, siltstones, and shale. The environment of deposition is believed to be the intertidal zone (tidal flat). Sediments of the Spearfish Formation were deposited by a transgressive sea on an eroded Mississippian carbonate section. Oil found in the Spearfish sandstones is derived from the Mississippian.

Dodge C.J.N.; Reid, F.S.

1986-08-01T23:59:59.000Z

379

OECD Crude "Demand" Remains Flat Between 1st and 2nd Quarters  

Gasoline and Diesel Fuel Update (EIA)

6 6 Notes: As we enter the year 2000, we can expect crude oil demand to follow the usual pattern and remain relatively flat in OECD countries between first and second quarters. Note that for OECD, product demand is greater than crude use. These areas import products from outside the region. While product demand falls during the second and third quarters, crude inputs to refineries remain high enough to allow for some product stock building Additionally, purchases of crude oil exceed inputs to refineries for a time, allowing crude oil stocks to build as well in order to cover the shortfall between crude oil production and demand during the fourth and first quarters. Price can strengthen during the "weak product demand" summer months when the market feels stock building is inadequate to meet the

380

DOE Cool Roof Calculator for Low-Slope or Flat Roofs  

NLE Websites -- All DOE Office Websites (Extended Search)

Cool Roof Calculator Cool Roof Calculator Estimates Cooling and Heating Savings for Flat Roofs with Non-Black Surfaces - Developed by the U.S. Department of Energy's Oak Ridge National Laboratory (Version 1.2) - This version of the calculator is for small and medium-sized facilities that purchase electricity without a demand charge based on peak monthly load. If you have a large facility that purchases electricity with a demand charge, run the CoolCalcPeak version in order to include the savings in peak demand charges from using solar radiation control. - What you get out of this calculator is only as good as what you put in. If you CLICK HERE , you'll find help in figuring out the best input values. Some things, such as the weathering of the solar radiation control properties and the effects of a plenum, are especially important. You'll

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Solar Radiation Data Manual for Flat-Plate and Concentrating Collectors  

Office of Scientific and Technical Information (OSTI)

Solar Radiation Data Manual Solar Radiation Data Manual for Flat-Plate and Concentrating Collectors NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefuleness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply iots endorsement, recommendation, or favoring by the United States government or any agency thereof. The views and opinions of authors expressed herein do not

382

New models for wind noise measured in a flat surface under turbulent flow.  

Science Journals Connector (OSTI)

We have previously developed models for predicting the power spectral density of the wind noisepressuremeasured in a flat plate outdoors from the measured power spectral density of the turbulence and the measured wind velocity profile above the plate [Yu et al. Proceedings of NCAD 2008 NoiseCon2008?ASME NCAD]. Recently we have corrected an error in the model for the logarithmic profile wind velocity gradient results and have developed an improved integration method. Also we have developed a prediction for arbitrary wind velocity profiles using the previous single exponential model. Typical results comparing our predictions with our measurements are presented and analyzed. A simple algebraic fit to the prediction for the logarithmic profile fit form is also provided for use by others. [Research supported by the U.S. Army TACOM?ARDEC at Picatinny Arsenal NJ.

2009-01-01T23:59:59.000Z

383

The effect of injection hole geometry on flat plate film cooling and heat transfer  

E-Print Network (OSTI)

to thermal ly protect a gas turb ine blade f r om the hot gases w i th in a gas turbine engine by inject ion of a coo l ing f lu id th rough discrete holes i n the surface of the blade. Tests were conducted on a flat p late us ing the f i lm cool ing... surface w i th coo l ing a ir c i rculated w i th in the hol low core of the turb ine b lade. External cool ing employs co ld a ir inject ion th rough holes on the outer surface of the turb ine blade produc ing a f i lm of a i r that protects...

Madsen, Eric Perry

2012-06-07T23:59:59.000Z

384

Early radiative properties of the developments of time symmetric, conformally flat initial data  

E-Print Network (OSTI)

Using a representation of spatial infinity based in the properties of conformal geodesics, the first terms of an expansion for the Bondi mass for the development of time symmetric, conformally flat initial data are calculated. As it is to be expected, the Bondi mass agrees with the ADM at the sets where null infinity ``touches'' spatial infinity. The second term in the expansion is proportional to the sum of the squared norms of the Newman-Penrose constants of the spacetime. In base of this result it is argued that these constants may provide a measure of the incoming radiation contained in the spacetime. This is illustrated by means of the Misner and Brill-Lindquist data sets.

J. A. Valiente Kroon

2002-06-18T23:59:59.000Z

385

Effect of helium addition on discharge characteristics in a flat fluorescent lamp  

SciTech Connect

The discharge characteristics of a multielectrode dual coplanar in a mercury-free flat fluorescent lamp were investigated using brightness-efficiency measurement and the infrared (IR) spectrum and intensified charge coupled device (ICCD) characteristics. The level of brightness was above 14 900 cd/m{sup 2} under the conditions of neon--50% xenon-8% He gas composition, 150 Torr pressure, and 20 kHz alternating current pulse. The ICCD results revealed a faster and wider discharge with a Ne-50% Xe-8% He gas composition. The effect of adding helium (He) to Ne-50% Xe revealed a faster peak emission, as confirmed by ICCD images. From the gated IR emission spectrum, the intensity ratio of I{sub 823nm}/I{sub 828nm} was {approx}8% higher with Ne-50% Xe-8% He than with Ne-50% Xe under the same pressure and applied voltage conditions.

Lee, Seong-Eui; Lee, Ho-Nyeon; Park, Hyoung-Bin; Lee, Kyo Sung; Choi, Kyung Cheol [Materials and Devices Research Center, Samsung Advanced Institute of Technology, Suwon 440-600 (Korea, Republic of); Department of Electronics Engineering, Sejong University, Seoul 143-747 (Korea, Republic of); Department of Electrical Engineering and Computer Science, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701 (Korea, Republic of)

2005-11-01T23:59:59.000Z

386

Correspondence Between $5D$ Ricci-Flat Cosmological Models and Quintessence Dark Energy Models  

E-Print Network (OSTI)

We study the accelerating expansion and the induced dark energy of the $5D$ Ricci-flat universe which is characterized by having a big bounce as opposed to a big bang. We show that the arbitrary function $\\mu(t)$ contained in the $5D$ solutions can be rewritten in terms of the redshift $z$ as a new arbitrary function $f(z)$, and we find that there is a correspondence between this $f(z)$ and the potential $V(\\phi)$ of the 4D quintessence models. Using this correspondence, the arbitrary function $f(z)$ and the $5D$ solution could be specified for a given form of the potential $V(\\phi)$.

Lixin Xu; Hongya Liu; Baorong Chang

2005-12-26T23:59:59.000Z

387

PNNI routing support for ad hoc mobile networking: A flat architecture  

SciTech Connect

This contribution extends the Outside Nodal Hierarchy List (ONHL) procedures described in ATM Form Contribution 97-0766. These extensions allow multiple mobile networks to form either an ad hoc network or an extension of a fixed PNNI infrastructure. This contribution covers the simplest case where the top-most Logical Group Nodes (LGNs), in those mobile networks, all reside at the same level in a PNNI hierarchy. Future contributions will cover the general case where those top-most LGNs reside at different hierarchy levels. This contribution considers a flat ad hoc network architecture--in the sense that each mobile network always participates in the PNNI hierarchy at the preconfigured level of its top-most LGN.

Martinez, L.; Sholander, P.; Tolendino, L.

1997-12-01T23:59:59.000Z

388

Calibration of a gated flat field spectrometer as a function of x-ray intensity  

SciTech Connect

We present an experimental determination of the response of a gated flat-field spectrometer at the Shenguang-II laser facility. X-rays were emitted from a target that was heated by laser beams and then were divided into different intensities with a step aluminum filter and collected by a spectrometer. The transmission of the filter was calibrated using the Beijing Synchrotron Radiation Facility. The response characteristics of the spectrometer were determined by comparing the counts recorded by the spectrometer with the relative intensities of the x-rays transmitted through the step aluminum filter. The response characteristics were used to correct the transmission from two shots of an opacity experiment using the same samples. The transmissions from the two shots are consistent with corrections, but discrepant without corrections.

Xiong, Gang; Yang, Guohong; Li, Hang; Zhang, Jiyan, E-mail: zhangjiyanzjy@sina.com; Zhao, Yang; Hu, Zhimin; Wei, Minxi; Qing, Bo; Yang, Jiamin; Liu, Shenye; Jiang, Shaoen [Research Center of Laser Fusion, China Academy of Engineering Physics, P. O. Box 919-986, Mianyang 621900 (China)] [Research Center of Laser Fusion, China Academy of Engineering Physics, P. O. Box 919-986, Mianyang 621900 (China)

2014-04-15T23:59:59.000Z

389

Microwave vitrification of Rocky Flats hydroxide precipitation sludge, Building 774. Progress report  

SciTech Connect

This report describes the first set of experiments performed on transuranic (TRU) precipitation sludge produced in Building 774, to determine the operating parameters for the microwave vitrification process. Toxicity Characteristic Leach Procedure (TCLP) results of the raw sludge showed concentrations of lead, silver and cadmium which were in excess of land disposal restrictions (LDR). Crushed, borosilicate glass was used as a frit source to produce a highly desirable, vitrified, product that required less energy to produce. TCLP testing, of microwaved samples, showed favorable results for 40 and 50% waste loading. The results of this study are encouraging and support the development of microwave vitrification technology for the treatment of various mixed waste streams at Rocky Flats Environmental Technology Site. However, additional experiments are required to fully define the operating parameters for a production-scale system.

Eschen, V.G.; Sprenger, G.S. [eds.; Fenner, G.S.; Corbin, I.E.

1995-04-01T23:59:59.000Z

390

Time pattern of off-site plutonium deposition from rocky flats plant by lake sediment analyses  

Science Journals Connector (OSTI)

A sediment core from a lake downwind of the Rocky Flats Plant, where nuclear weapons components are produced, was used to reconstruct a time pattern of off-site plutonium deposition. Core sections were dated by analyses of 137Cs, 239,240Pu, 238Pu, and 241Am fallout from nuclear testing and 238Pu fallout from a satellite failure. A peak in transuranic concentrations occurred in late 1969 which was attributable to the Plant. This was confirmed by mass isotopic analysis of plutonium isotopes in selected core segments where the global fallout and Plant contributions could be differentiated. The 18 nCi 239,240Pu per m2 from the Plant that had accumulated in the sediment is reasonable when compared to soil analyses.

Edward P. Hardy; Herbert L. Volchok; Hugh D. Livingston; John C. Burke

1980-01-01T23:59:59.000Z

391

Retrospective beryllium exposure assessment at the Rocky Flats Environmental Technology site  

SciTech Connect

Since the 1960`s, beryllium machining was performed to make nuclear weapon components at the Department of Energy (DOE) Rocky Flats Plant. Beryllium exposure was assessed via fixed airhead (FAH) sampling in which the filter cassette was affixed to the machine, generally within a few feet of the worker`s breathing zone. Approximately 500,000 FAH samples were collected for beryllium over three decades. From 1984 to 1987, personal breathing zone (PBZ) samples were also collected as part of the evaluation of a new high velocity/low volume local exhaust ventilation (HV/LV LEV) system. The purpose of this study was to determine how the two types of sampling data could be used for an exposure assessment in the beryllium shop.

Barnard, A.E.; Torma-Krajewski, J. [Department of Energy, Rocky Flats Field Office, Golden, CO (United States); Viet, S.M. [M.H. Chew & Associates, Inc., Golden, CO (United States)

1997-05-01T23:59:59.000Z

392

Integrating NRDA and CERCLA environmental evaluations at the Rocky Flats Plant: A case study  

SciTech Connect

The purpose of this paper is to briefly review cleanup regulations in reference to natural resource liability, protection, and restoration; to present a case study on the Rocky Flats Plant (RFP) showing how this DOE facility is approaching the task of integrating the ecological assessment/impact portion of three major regulatory mandates: Resource Conservation and Recovery Act (RCRA), Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), and the National Environmental Policy Act (NEPA) with the Natural Resource Damage Assessment (NRDA) regulations using a flow chart depicting RCRA/CERCLA interim and final actions; to present what has and has not worked at the RFP; and, finally to suggest some technical strategies when planning for remediation and restoration in the NRD process that should be considered.

Knudsen, T.L.

1993-04-01T23:59:59.000Z

393

Denitration of Rocky Flats Ion-Exchange Resins: Recommendation of Denitration Processes, October 19, 1995  

SciTech Connect

Resin denitration via anion-exchange is an implementable process that can effectively mitigate the hazards associated with stored resins in which the bulk of the nitrate consists of an "exchangeable nitrate" ionically bound to the cationic sites of the anion-exchange resins. Salicylate has been selected as the exchange anion of choice because of its superior selectivity for the Rocky Flats resins and its unique potential for comprehensive recovery and recycle. This report outlines a single recommended resin denigration procedure that is reasonably independent of the resin composition and the current stored form. This procedure is not optimized but rather seeks to `over-treat' the resins so that a single procedure works for the variety of stored resins. The recommended treatment with sodium salicylate reduces resins by 95-99+% the measured exothermic behavior of the ion-exchange.

Jacob Espinoza; Mary Barr; Wayne Smith

1998-12-01T23:59:59.000Z

394

Integrating NRDA and CERCLA environmental evaluations at the Rocky Flats Plant: A case study  

SciTech Connect

The purpose of this paper is to briefly review cleanup regulations in reference to natural resource liability, protection, and restoration; to present a case study on the Rocky Flats Plant (RFP) showing how this DOE facility is approaching the task of integrating the ecological assessment/impact portion of three major regulatory mandates: Resource Conservation and Recovery Act (RCRA), Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), and the National Environmental Policy Act (NEPA) with the Natural Resource Damage Assessment (NRDA) regulations using a flow chart depicting RCRA/CERCLA interim and final actions; to present what has and has not worked at the RFP; and, finally to suggest some technical strategies when planning for remediation and restoration in the NRD process that should be considered.

Knudsen, T.L.

1993-01-01T23:59:59.000Z

395

Analysis of offsite Emergency Planning Zones (EPZs) for the Rocky Flats Plant. [Contains glossary  

SciTech Connect

A quality assurance plan (QAP) is a documented description or a listing of the controls to be implemented to assure that an operation or activity is accomplished in a consistent manner and in accordance with requirements. Federal, state, and local governments require emergency planning for facilities that may affect the public in the event of an accidental release of nuclear or hazardous materials. One of the purposes of this EG G Rocky Flats Plant (RFP) Analysis of Offsite Emergency Planning Zones (EPZ) project is to identify the EPZs where actions could be necessary to protect public health. The RFP EPZ project is developing an interim basis for potential sheltering and evacuation recommendations in the event of an accidental release of radionuclides to the atmosphere from this facility. Also, RFP is developing EPZs for accidental releases of major nonradiological hazardous substances to the atmosphere, and will analyze the impacts of an unplanned surface water release from the facility.

Not Available

1990-08-01T23:59:59.000Z

396

Generalized boundary conditions for general relativity for the asymptotically flat case in terms of Ashtekar's variables  

E-Print Network (OSTI)

There is a gap that has been left open since the formulation of general relativity in terms of Ashtekar's new variables namely the treatment of asymptotically flat field configurations that are general enough to be able to define the generators of the Lorentz subgroup of the asymptotical Poincar\\'e group. While such a formulation already exists for the old geometrodynamical variables, up to now only the generators of the translation subgroup could be defined because the function spaces of the fields considered earlier are taken too special. The transcription of the framework from the ADM variables to Ashtekar's variables turns out not to be straightforward due to the freedom to choose the internal SO(3) frame at spatial infinity and due to the fact that the non-trivial reality conditions of the Ashtekar framework reenter the game when imposing suitable boundary conditions on the fields and the Lagrange multipliers.

T. Thiemann

1993-10-29T23:59:59.000Z

397

Generalized boundary conditions for general relativity for the asymptotically flat case in terms of Ashtekar's variables  

E-Print Network (OSTI)

There is a gap that has been left open since the formulation of general relativity in terms of Ashtekar's new variables namely the treatment of asymptotically flat field configurations that are general enough to be able to define the generators of the Lorentz subgroup of the asymptotical Poincar\\'e group. While such a formulation already exists for the old geometrodynamical variables, up to now only the generators of the translation subgroup could be defined because the function spaces of the fields considered earlier are taken too special. The transcription of the framework from the ADM variables to Ashtekar's variables turns out not to be straightforward due to the a priori freedom to choose the internal SO(3) frame at spatial infinity and due to the fact that the non-trivial reality conditions of the Ashtekar framework reenter the stage when imposing suitable boundary conditions on the fields and the Lagrange multipliers.

T. Thiemann

1999-10-04T23:59:59.000Z

398

Flow modeling of flat oval ductwork elbows using computational fluid dynamics  

SciTech Connect

Incompressible turbulent flow fields in heating, ventilating, and air-conditioning (HVAC) elbows were computed using an incompressible, three-dimensional computational fluid dynamics (CFD) solver implementing a {kappa}-{epsilon} turbulence model. Two different geometries were investigated, including 90-degree five-gore hard-bend and easy-bend flat oval elbows. The geometries represent a subset of many configurations analyzed in ASHRAE RP-854, Determination of Duct Fitting Resistance by Numerical Analysis. For each configuration, the zero-length pressure loss coefficient was calculated. The flow was described through contours of velocity and plots of static pressure. The Reynolds number for these flows was held constant at 100,000 based on duct diameter and mean fluid velocity.

Mahank, T.A.; Mumma, S.A. [Pennsylvania State Univ., University Park, PA (United States)

1997-12-31T23:59:59.000Z

399

Property:OpenEI/UtilityRate/FlatDemandMonth8 | Open Energy Information  

Open Energy Info (EERE)

Property Property Edit with form History Facebook icon Twitter icon » Property:OpenEI/UtilityRate/FlatDemandMonth8 Jump to: navigation, search This is a property of type Number. The allowed values for this property are: 1 2 3 4 5 6 7 8 9 Pages using the property "OpenEI/UtilityRate/FlatDemandMonth8" Showing 25 pages using this property. (previous 25) (next 25) 0 0000827d-84d0-453d-b659-b86869323897 + 1 + 000e60f7-120d-48ab-a1f9-9c195329c628 + 1 + 00101108-073b-4503-9cd4-01769611c26f + 1 + 001361ca-50d2-49bc-b331-08755a2c7c7d + 1 + 0016f771-cda9-4312-afc2-63f10c8d8bf5 + 1 + 00178d3d-17cb-46ed-8a58-24c816ddce96 + 1 + 001d1952-955c-411b-8ce4-3d146852a75e + 1 + 001ea8be-7a59-4bcb-a923-e8f1015946ee + 1 + 001eaca9-6ce7-4c0f-8578-44fc29654e97 + 1 + 0022e9a5-942c-4e97-94d7-600f5d315ce8 + 1 +

400

Hillslope erosion at the Maxey Flats Radioactive Waste Disposal Site, northeastern Kentucky  

SciTech Connect

Maxey Flats, a disposal site for low level radioactive waste, is on a plateau that rises 300 to 400 ft above the surrounding valleys in northeastern Kentucky. Rates of hillslope retreat were determined through a combination of direct erosion measurements during the 2-year study and through dendrogeomorphic techniques. Rates of hillslope retreats were determined through a combination of direction erosion measurements during the 2-year study and through dendrogeomorphic techniques. Rates of hillslope retreat determined from dendrogeomorphic evidence rate from 3.8 to 9.1 in/century, so that time to exposure of the trenches ranges from 35,000 to 65,000 years. The minimum estimate of 35,000 years is for the most actively eroding southern slope. Throughout tens of thousands of years, the rate of hillslope retreat is determined more by the occurrence of infrequent extreme events such as slope failure than by the continuous processes of slope wash observed in this study. These slope failures cause as much erosion in one event as hundreds or even thousands of years of slope wash. Periods of tens of thousands of years are also sufficiently long for significant changes in climate and tectonic activity to occur. Rates of erosion observed during this 2-year study are highly unlikely to be indicative of rates averaged over periods of tens of thousands of years during which many extreme events can occur. Thus, the long-term geomorphic stability of the Maxey Flats disposal site will be highly dependent upon the magnitude and frequency of extreme erosive events and upon trends in climate change and tectonic activity.

Carey, W.P., Lyverse, M.A.; Hupp, C.R.

1990-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

A Hydrostratigraphic Framework Model and Alternatives for the Groundwater Flow and Contaminant Transport Model of Corrective Action Unit 98: Frenchman Flat, Clark, Lincoln and Nye Counties, Nevada  

SciTech Connect

A new, revised three-dimensional (3-D) hydrostratigraphic framework model for Frenchman Flat was completed in 2004. The area of interest includes Frenchman Flat, a former nuclear testing area at the Nevada Test Site, and proximal areas. Internal and external reviews of an earlier (Phase I) Frenchman Flat model recommended additional data collection to address uncertainties. Subsequently, additional data were collected for this Phase II initiative, including five new drill holes and a 3-D seismic survey.

Bechtel Nevada

2005-09-01T23:59:59.000Z

402

Mott Insulator-Superfluid Transition in a Generalized Bose-Hubbard Model with Topologically Non-trivial Flat-Band  

E-Print Network (OSTI)

In this paper, we studied a generalized Bose-Hubbard model on a checkerboard lattice with topologically nontrivial flat-band. We used mean-field method to decouple the model Hamiltonian and obtained phase diagram by Landau theory of second-order phase transition. We further calculate the energy gap and the dispersion of quasi-particle or quasi-hole in Mott insulator state and found that in strong interaction limit the quasi-particles or the quasi-holes also have flat bands.

Xing-Hai Zhang; Su-Peng Kou

2012-05-30T23:59:59.000Z

403

A photoelastic stress analysis of a flat circular plate simply supported and subjected to a concentrated load at the center  

E-Print Network (OSTI)

LIBRARy 4 4 III coI I BGv IIf Tf4 A PHOTOELASTIC STRESS ANALYSIS OF A FLAT CIRCULAR PLATE SIWPLY SUPPORTED AND SUBJECTED TO A CONCENTRATED LOAD AT THE CENTERS A Thesis By Joseph Lloyd Fulbright Submitted to the Graduate School... of the Agricultural and Wechanical College of Texas in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Way 1958 Wa)or Sub]ect& Wechanical Engineering A PHOTOELASTIC STRESS ANALYSIS OF A FLAT CIRCULAR PLATE SIMPLY SUPPORTED...

Fulbright, Joseph Lloyd

2012-06-07T23:59:59.000Z

404

One-Step Production of Superhydrophobic Coatings on Flat Substrates via Atmospheric Rf Plasma Process Using Non-Fluorinated Hydrocarbons  

Science Journals Connector (OSTI)

One-Step Production of Superhydrophobic Coatings on Flat Substrates via Atmospheric Rf Plasma Process Using Non-Fluorinated Hydrocarbons ... This paper describes the direct deposition of hydrocarbon coatings with a static water contact angle higher than 150 using simple C6 hydrocarbons as a reactive gas in helium plasma generated in ambient air without any preroughening of the silicon (100) substrate. ...

Seul Hee Lee; Zachary R. Dilworth; Erik Hsiao; Anna L. Barnette; Matthew Marino; Jeong Hoon Kim; Jung-Gu Kang; Tae-Hwan Jung; Seong H. Kim

2011-01-31T23:59:59.000Z

405

Heat transfer to non-Newtonian power-law fluid past a continuously moving porous flat plate with heat flux  

Science Journals Connector (OSTI)

The analysis of heat transfer to the non-Newtonian power-law fluid flow past a continuously moving flat porous plate in presence of suction/injection with heat flux has been presented. We have obtained...n...=1 a...

B. P. Jadhav; B. B. Waghmode

1990-01-01T23:59:59.000Z

406

Three-Dimensional Bicomponent Supramolecular Nanoporous Self-Assembly on a Hybrid All-Carbon Atomically Flat and Transparent Platform  

Science Journals Connector (OSTI)

Three-Dimensional Bicomponent Supramolecular Nanoporous Self-Assembly on a Hybrid All-Carbon Atomically Flat and Transparent Platform ... We thank Ueli Heiz for providing experimental infrastructure at the Institute of Physical Chemistry at TUM. ... electronics are based on conjugated systems predominantly made up of sp2-hybridized carbon, such as graphene nanoribbons. ...

Juan Li; Sarah Wieghold; Murat Anil Öner; Patrick Simon; Moritz V. Hauf; Emanuela Margapoti; Jose A. Garrido; Friedrich Esch; Carlos-Andres Palma; Johannes V. Barth

2014-08-01T23:59:59.000Z

407

Self-Assembly of Collagen on Flat Surfaces: The Interplay of Collagen-Collagen and Collagen-Substrate Interactions  

E-Print Network (OSTI)

Self-Assembly of Collagen on Flat Surfaces: The Interplay of Collagen-Collagen and Collagen also self-assemble in vitro from solution. While previous in vitro studies showed that the p such control could be exerted are still elusive. To address this issue and to be able to simulate self-assembly

Ciobanu, Cristian

408

Case History of a Clean Water Act Compliance Agreement at the Rocky Flats Environmental Technology Site near Golden, Colorado  

SciTech Connect

A major Clean Water Act (CWA) Federal Facilities Compliance Agreement was signed on March 25, 1991 by the US Department of Energy, Rocky Flats Field Office (DOE, RFFO) and the Water Enforcement Division of the Environmental Protection Agency (EPA), Region VIII. The agreement revised the Rocky Flats Plant`s National Pollutant Discharge Elimination System (NPDES) permit and arose from pemittee-requested changes in effluent monitoring points and permit violations, most notably the February 22, 1989 Chromic Acid Incident. The Rocky Flats Plant, now called the Rocky Flats Environmental Technology Site (Site) near Golden Colorado was operated at that time by Rockwell International Corporation, who later plead guilty to six misdemeanor and felony counts of the CWA (the aforementioned NPDES permit violations) and paid a $4 million fine on March 26, 1992. The Compliance Agreement, hereafter referred to as the NPDES FFCA, called for three separate remedial action plans and contained a schedule for their submittal to the EPA. The compliance plans focussed on: (1) Waste Water Treatment Plant (WWTP) performance upgrades, (2) source control and surface water protection, and (3) characterization of the impacts from past sludge disposal practices. Projects that implemented the compliance plans were initiated soon after submittal to the EPA and are forecast to complete in 1997 at a total cost of over $35 million. This paper presents a case history of NPDES FFCA compliance projects and highlights the successes, failures, and lessons learned.

Thompson, J.S.

1995-08-01T23:59:59.000Z

409

Completion Report for Model Evaluation Well ER-11-2: Corrective Action Unit 98: Frenchman Flat  

SciTech Connect

Model Evaluation Well ER-11-2 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of Nevada Environmental Management Operations at the Nevada National Security Site (formerly known as the Nevada Test Site). The well was drilled in August 2012 as part of a model evaluation program in the Frenchman Flat area of Nye County, Nevada. The primary purpose of the well was to provide detailed geologic, hydrogeologic, chemical, and radionuclide data that can be used to test and build confidence in the applicability of the Frenchman Flat Corrective Action Unit flow and transport models for their intended purpose. In particular, this well was designed to provide data to evaluate the uncertainty in model forecasts of contaminant migration from the upgradient underground nuclear test PIN STRIPE, conducted in borehole U-11b in 1966. Well ER-11-2 will provide information that can be used to refine the Phase II Frenchman Flat hydrostratigraphic framework model if necessary, as well as to support future groundwater flow and transport modeling. The main 31.1-centimeter (cm) hole was drilled to a total depth of 399.6 meters (m). A completion casing string was not set in Well ER-11-2. However, a piezometer string was installed in the 31.1-cm open hole. The piezometer is composed of 7.3-cm stainless-steel tubing hung on 6.0-cm carbon-steel tubing via a crossover sub. The piezometer string was landed at 394.5 m, for monitoring the lower tuff confining unit. Data collected during and shortly after hole construction include composite drill cuttings samples collected every 3.0 m, various geophysical logs, water quality (including tritium and other test-related radionuclides) measurements, and water level measurements. The well penetrated 42.7 m of Quaternary and Tertiary alluvium and 356.9 m of Tertiary volcanic rock. The water-level measured in the piezometer string on September 25, 2012, was 353.8 m below ground surface. No tritium above levels detectable by field methods were encountered in this hole. No well development or hydrologic testing was conducted in this well immediately after completion, and future well development, sampling, and hydrologic testing planned for this well will be limited due to the diameter of the piezometer string. The stratigraphy, general lithology, and the water level are as expected, but the section of geology encountered is higher than expected due to faulting. No tritium above the minimum detection limit of the field equipment was detected because the target aquifer (the Topopah Spring aquifer) at Well ER-11-2 is structurally higher than expected and thus unsaturated.

NSTec Underground Test Area and Boreholes Programs and Operations

2013-01-22T23:59:59.000Z

410

Completion Report for Model Evaluation Well ER-5-5: Corrective Action Unit 98: Frenchman Flat  

SciTech Connect

Model Evaluation Well ER-5-5 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of Nevada Environmental Management Operations at the Nevada National Security Site (formerly known as the Nevada Test Site). The well was drilled in July and August 2012 as part of a model evaluation well program in the Frenchman Flat area of Nye County, Nevada. The primary purpose of the well was to provide detailed geologic, hydrogeologic, chemical, and radiological data that can be used to test and build confidence in the applicability of the Frenchman Flat Corrective Action Unit flow and transport models for their intended purpose. In particular, this well was designed to obtain data to evaluate the uncertainty in model forecasts of contaminant migration from the upgradient underground nuclear test MILK SHAKE, conducted in Emplacement Hole U-5k in 1968, which were considered to be uncertain due to the unknown extent of a basalt lava-flow aquifer present in this area. Well ER-5-5 is expected to provide information to refine the Phase II Frenchman Flat hydrostratigraphic framework model, if necessary, as well as to support future groundwater flow and transport modeling. The 31.1-centimeter (cm) diameter hole was drilled to a total depth of 331.3 meters (m). The completion string, set at the depth of 317.2 m, consists of 16.8-cm stainless-steel casing hanging from 19.4-cm carbon-steel casing. The 16.8-cm stainless-steel casing has one slotted interval open to the basalt lava-flow aquifer and limited intervals of the overlying and underlying alluvial aquifer. A piezometer string was also installed in the annulus between the completion string and the borehole wall. The piezometer is composed of 7.3-cm stainless-steel tubing suspended from 6.0-cm carbon-steel tubing. The piezometer string was landed at 319.2 m, to monitor the basalt lava-flow aquifer. Data collected during and shortly after hole construction include composite drill cuttings samples collected every 3.0 m, various geophysical logs, preliminary water quality measurements, and water-level measurements. The well penetrated 331.3 m of Quaternary–Tertiary alluvium, including an intercalated layer of saturated basalt lava rubble. No well development or hydrologic testing was conducted in this well immediately after completion; however, a preliminary water level was measured in the piezometer string at the depth of 283.4 m on September 25, 2012. No tritium above the minimum detection limit of the field instruments was detected in this hole. Future well development, sampling, and hydrologic testing planned for this well will provide more accurate hydrologic information for this site. The stratigraphy, general lithology, and water level were as expected, though the expected basalt lava-flow aquifer is basalt rubble and not the dense, fractured lava as modeled. The lack of tritium transport is likely due to the difference in hydraulic properties of the basalt lava-flow rubble encountered in the well, compared to those of the fractured aquifer used in the flow and transport models.

NSTec Underground Test Area and Boreholes Programs and Operations

2013-01-18T23:59:59.000Z

411

Formation, characterization and reactivity of adsorbed oxygen...  

NLE Websites -- All DOE Office Websites (Extended Search)

Formation, characterization and reactivity of adsorbed oxygen on BaOPt(111). Formation, characterization and reactivity of adsorbed oxygen on BaOPt(111). Abstract: The formation...

412

Thin-film silicon triple-junction solar cell with 12.5% stable efficiency on innovative flat light-scattering substrate  

E-Print Network (OSTI)

Thin-film silicon triple-junction solar cell with 12.5% stable efficiency on innovative flat light://jap.aip.org/about/rights_and_permissions #12;Thin-film silicon triple-junction solar cell with 12.5% stable efficiency on innovative flat light require light-trapping schemes that are predominantly based on depositing the solar cells on rough

Psaltis, Demetri

413

History of Uranium-233(sup233U)Processing at the Rocky Flats Plant. In support of the RFETS Acceptable Knowledge Program  

SciTech Connect

This report documents the processing of Uranium-233 at the Rocky Flats Plant (Rocky Flats Environmental Technology Site). The information may be used to meet Waste Isolation Pilot Plant (WIPP) Waste Acceptance Criteria (WAC)and for determining potential Uranium-233 content in applicable residue waste streams.

Moment, R.L.; Gibbs, F.E.; Freiboth, C.J.

1999-04-01T23:59:59.000Z

414

Research Program at Maxey Flats and Consideration of Other Shallow Land Burial Sites  

SciTech Connect

The Maxey Flats research program is a multidisciplinary, multilaboratory program with the objectives to define the radiochemical and chemical composition of leachates in the burial trenches, define the areal distribution of radionuclides on the site and the factors responsible for this distribution, define the concentrations of radionuclides in vegetation both on and offsite and the uptake of radionuclides by representative agricultural crops, define the atmospheric pathways for radionuclide transport and the mechanisms involved, determine the subsurface migration rates of radionuclides and the chemical, physical, biological, and hydrogeological factors which affect this migration. and evaluate the engineering practices which influence the seepage of surface waters into the burial trenches. The program was initiated in 1979 and a research meeting was held at the Nuclear Regulatory Commission Headquarters on July 16, 1980, to report the research findings of each of the participating laboratories and universities. Important observations from the research are included in the Summary and the results reported for each of the research efforts are summarized in the individual reports that are combined to form this document.

,

1981-03-01T23:59:59.000Z

415

Acoustic boundary layer and acoustic radiation from a ribbed flat plate  

Science Journals Connector (OSTI)

The acoustic boundary?layer theory(patterned after the viscous boundary?layer theory) is derived by noting that for low frequencies where the structural wavelength is much less than the fluid acoustic wavelength there is a region about the vibrating structure which behaves as if the fluid was incompressible. The dimension of this region depends upon the particular conditions of the problem. In a paper presented by the author [J. Acoust. Soc. Am. 62 S32(A) (1977)] the theory behind the acoustic boundary layer was developed and applied to simple unit problems. In this paper the near and the far field of a force driven plate is obtained by the use of the acoustic boundary?layer theory. Two different problems are addressed. In the first instance the structure is assumed to be homogeneous while in the second problem presented a rib is attached to the flat plate. In both instances the fully coupled fluid structure problem is solved and comparisons between the exact classical approach and the proposed theory are discussed.

Mauro Pierucci

1978-01-01T23:59:59.000Z

416

DISCOVERY OF A FLAT-SPECTRUM RADIO NUCLEUS IN NGC 3115  

SciTech Connect

The early-type galaxy NGC 3115, at a distance of 10.2 Mpc, hosts the nearest billion-solar-mass black hole. Wong et al. recently inferred a substantial Bondi accretion rate near the black hole. Bondi-like accretion is thought to fuel outflows, which can be traced through their radio emission. This paper reports the discovery of a radio nucleus in NGC 3115, with a diameter less than 0.''17 (8.4 pc), a luminosity at 8.5 GHz of 3.1 Multiplication-Sign 10{sup 35} erg s{sup -1}, and a flat spectrum ({alpha} = -0.23 {+-} 0.20, S{proportional_to}{nu}{sup {alpha}}). The radio source coincides with the galaxy's photocenter and candidate X-ray nucleus. The emission is radio loud, suggesting the presence of an outflow on scales less than 10 pc. On such scales, the Bondi accretion could be impeded by heating due to disruption of the outflow.

Wrobel, J. M. [National Radio Astronomy Observatory, P.O. Box O, Socorro, NM 87801 (United States); Nyland, K., E-mail: jwrobel@nrao.edu, E-mail: knyland@nrao.edu [New Mexico Tech, Department of Physics, 801 Leroy Place, Socorro, NM 87801 (United States)

2012-12-01T23:59:59.000Z

417

INCIDENCE OF Mg II ABSORPTION SYSTEMS TOWARD FLAT-SPECTRUM RADIO QUASARS  

SciTech Connect

The conventional wisdom that the rate of incidence of Mg II absorption systems, dN/dz (excluding 'associated systems' having a velocity {beta}c relative to the active galactic nucleus (AGN) of less than {approx}5000 km s{sup -1}), is totally independent of the background AGNs has been challenged by a recent finding that dN/dz for strong Mg II absorption systems toward distant blazars is 2.2 {+-} {sup 0.8}{sub 0.6} times the value known for normal optically selected quasars (QSOs). This has led to the suggestion that a significant fraction of even the absorption systems with {beta} as high as {approx}0.1 may have been ejected by the relativistic jets in the blazars, which are expected to be pointed close to our direction. Here, we investigate this scenario using a large sample of 115 flat-spectrum radio-loud quasars (FSRQs) that also possess powerful jets, but are only weakly polarized. We show, for the first time, that dN/dz toward FSRQs is, on the whole, quite similar to that known for QSOs and that the comparative excess of strong Mg II absorption systems seen toward blazars is mainly confined to {beta} < 0.15. The excess relative to FSRQs probably results from a likely closer alignment of blazar jets with our direction; hence, any gas clouds accelerated by them are more likely to be on the line of sight to the active quasar nucleus.

Chand, Hum [Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263 129 (India); Gopal-Krishna, E-mail: hum@aries.res.in, E-mail: krishna@ncra.tifr.res.in [NCRA-TIFR, Pune University Campus, Pune 411 007 (India)

2012-07-20T23:59:59.000Z

418

IDENTIFYING BREAKS AND CURVATURE IN THE FERMI SPECTRA OF BRIGHT FLAT SPECTRUM RADIO QUASARS  

SciTech Connect

Knowing the site of {gamma}-ray emission in active galactic nucleus jets will do much for our understanding of the physics of the source. In particular, if the emission region is close to the black hole then absorption of {gamma}-rays with photons from the broad-line region could become significant. Such absorption is predicted to produce two specific spectral breaks in the {gamma}-ray spectra of Flat Spectrum Radio Quasars (FSRQs). We test this hypothesis using three years of Fermi observations of nine bright FSRQs. A simple power-law fit to the spectrum of each source can be significantly improved by introducing a break, but the break energies are inconsistent with those predicted by the double-absorber model. In some cases the fit can be further improved by a log-parabola. In addition, by dividing the data from each source into two equal epochs we find that the best description of an object's spectrum often varies between a log-parabola and a broken power law.

Harris, J.; Daniel, M. K.; Chadwick, P. M., E-mail: j.d.harris@durham.ac.uk [Department of Physics, Durham University, South Road, Durham DH1 3LE (United Kingdom)

2012-12-10T23:59:59.000Z

419

Oxygen isotope records of the Australian flat oyster (Ostrea angasi) as a potential temperature archive  

Science Journals Connector (OSTI)

Abstract The response of the oxygen isotope ratio (?18O) in shells of the Australian native flat oyster Ostrea angasi to changes in water temperature has been assessed using growth experiments conducted for one year at two locations on the east coast of Australia. The analysed ?18O of the oyster shells (?18Oshell) closely follows the predicted oyster shell ?18O constructed from measured ?18O in the water (?18Owater) and water temperature. Influxes of freshwater that occur in the estuarine habitats of O. angasi can modify the ?18Owater, and consequently ?18Oshell. Salinity fluctuations can also cause interruptions to shell growth in this species. This can cause overestimated temperatures in O. angasi ?18Oshell temperature reconstructions. A ?18Oshell–temperature calibration was established for O. angasi, yielding the relationship: T°C = 13.97 ? (3.57?18Oshell ? ?18Owater) + (0.17?18Oshell ? ?18Owater)2, n = 79, R2 = 0.79, which, within the experimental uncertainties of the data, is similar to other published biogenic carbonate paleotemperature equations.

Sarah Tynan; Andrea Dutton; Stephen Eggins; Bradley Opdyke

2014-01-01T23:59:59.000Z

420

A new solar radiation data manual for flat?plate and concentrating collectors  

Science Journals Connector (OSTI)

A new solar radiation data manual is nearing completion by the National Renewable Energy Laboratory’s (NREL’s) Analytic Studies Division under the Solar Radiation Resource Assessment Project and the Photovoltaic Solar Radiation Research Task. These tasks are funded and monitored by the Photovoltaics Branch of the Department of Energy’s Office of Energy Efficiency and Renewable Energy. The new manual is entitled Solar Radiation Data Manual for Flat?Plate and Concentrating Collectors. For designers and engineers of solar energy related systems it gives the solar resource available for various types of collectors for 239 stations in the United States and its territories. The data in the manual are modeled using diffuse horizontal and direct beam solar radiation values from the National Solar Radiation Data Base (NSRDB). The NSRDB contains modeled (93%) and measured (7%) global horizontal diffuse horizontal and direct beam solar radiation for 1961–1990. This paper describes what is contained in the new data manual and how it was developed.

W. Marion; S. Wilcox

1994-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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to obtain the most current and comprehensive results.


421

The optimum tilt angle for flat-plate solar collectors in Iran  

Science Journals Connector (OSTI)

This paper aims at determining the optimum tilt angle for south facing flat-plate solar collectors in Iran. Solar radiation on a horizontal surface was estimated by applying an empirical method and employing meteorological data from 80 selected cities. A mathematical model was used for estimating the solar radiation at different tilt angles. Daily monthly seasonally bi-annually and yearly optimum tilt angles and solar radiations were determined for 80 selected cities. Recommendations were made on the optimum tilt angle adjustment for different places in the country in order to benefit the best solar radiation available. The averaged benefits of annual solar radiation for 80 cities were 21.3% for daily 21% for monthly 19.6% for seasonal 19.3% for bi-annual and 13.3% for yearly adjustments compared with the radiation on the horizontal collector. Based on these results adjusting tilt angles at least twice a year is recommended. Optimum tilt angles for cloudy sky cities with a low clearness index are lower than those for cities at the same latitude angle having a higher clearness index. In addition to latitude angle the climate conditions are also important for determining the optimum tilt angle.

Farzad Jafarkazemi; S. Ali Saadabadi; Hadi Pasdarshahri

2012-01-01T23:59:59.000Z

422

Rocky Flats 10 year plan: over 500 structures to be demolished  

SciTech Connect

Rocky Flats Environmental Technology Site has prepared a Ten Year Plan (Plan) that demonstrates how the Site would achieve accelerated cleanup and rapidly reduce the risks the Site currently poses to its workers, the public, and the environment. A major element of the Plan is the decontamination and demolition of over 500 Site facilities, including all of the former nuclear production facilities, by the end of 2006. Facilities used for the storage of plutonium, treatment of low-level mixed waste, and several office building would remain until the plutonium is removed or there is no longer a need for the facility, in which case it would be demolished. While the Plan considers all aspects of the cleanup and closure, this paper focuses on the challenges posed by the removal of highly contaminated equipment and the demolition of structures. This paper describes near- term decommissioning projects as well as the long range plans and budgets. Cash flow ultimately controls schedule, and sharing of budget priorities among processing of special nuclear material, disposing of waste, and cleaning up the environment has to be juggled carefully to attain the goals of the Plan. The total cost of the Plan exceeds $5 billion, and over $1 billion will be spent on decommissioning activities. Following removal of the plutonium and the demolition of the plutonium storage and remaining Site facilities by the end of 2015, the cost to perform the long-term environmental monitoring at the Site is estimated to be $10 million per year.

Evans, B. [Kaiser-Hill L.L.C., Rocky Flats, CO (United States); Bengel, P. [Rocky Mountain Remediation Services, L.L.C., Rocky Flats, CO (United States)

1997-03-01T23:59:59.000Z

423

A Cold War Battlefield: Frenchman Flat Historic District, Nevada Test Site, Nye County, Nevada  

SciTech Connect

This report provides the U.S. Department of Energy, Nevada Operations Office with the documentation necessary to establish the Frenchman Flat Historic District on the Nevada Test Site (NTS). It includes a list of historic properties that contribute to the eligibility of the district for inclusion in the National Register of Historic Places (NRHP) and provides contextual information establishing its significance. The list focuses on buildings, structures and features associated with the period of atmospheric testing of nuclear weapons on the NTS between 1951 and 1962. A total of 157 locations of buildings and structures were recorded of which 115 are considered to be eligible for the NRHP. Of these, 28 have one or more associated features which include instrumentation supports, foundations, etc. The large majority of contributing structures are buildings built to study the blast effects of nuclear weaponry. This has resulted in a peculiar accumulation of deteriorated structures that, unlike most historic districts, is best represented by those that are the most damaged. Limitations by radiological control areas, surface exposure and a focus on the concentration of accessible properties on the dry lake bed indicate additional properties exist which could be added to the district on a case-by-case basis.

Johnson, William Gray [DRI; Holz, Barbara A [DRI; Jones, Robert [DRI

2000-08-01T23:59:59.000Z

424

Fiscal year 1990 Rocky Flats Plant Environmental Restoration program Current-Year Work Plan  

SciTech Connect

The Rocky Flats Plant (RFP) is a nuclear weapons manufacturing facility currently operated by EG G for the US Department of Energy (DOE). RFP is located at the foot of the Rocky Mountains in Jefferson Country, Colorado. The Fiscal Year 1990 (FY90) Current-Year Work Plan (CYWP) is intended to serve as a guidance document for the Environmental Restoration (ER) and RCRA Compliance programs that will be implemented at RFP. The CYWP provides in one document any cross-references necessary to understand the interrelationships between the CYWP and the DOE Five-Year Plan (FYP), Site-Specific Plan (SSP), and other related documents. The scope of this plan includes comparison of planned FY90 ER activities to those actually achieved. The CYWP has been updated to include Colorado Department of Health (CDH), US Environmental Protection Agency (EPA), and DOE Inter-Agency Agreement ER activities. It addresses hazardous wastes, radioactive wastes, mixed wastes (radioactive and hazardous), and sanitary wastes. The CYWP also addresses facilities and sites contaminated with or used in management of those wastes.

Nielsen, T. (EG and G Rocky Flats, Inc., Golden, CO (USA)); Waage, E.; Miller, D. (Stoller (S.M.) Corp., Boulder, CO (USA))

1990-01-01T23:59:59.000Z

425

On the equation of state of a flat FRW model filled with a bulk viscous fluid  

E-Print Network (OSTI)

In this paper, we study the equation of state admissible for a flat FRW models filled with a bulk viscous fluid by using the Lie group method. It is founded that the model admits scaling symmetries iff the bulk viscous parameter $\\gamma =1/2$. In this case, it is found that the main quantities follow a power law solution and in particular the bulk viscous pressure $\\Pi $ has the same order of magnitude as the energy density $\\rho ,$ in such a way that it is possible to formulate the equation of state $\\Pi =\\varkappa \\rho ,$ where $\\varkappa \\in \\mathbb{R}^{-}$ (i.e. is a negative numerical constant)$.$ If we assume such relationship we find again that the model is scale invariant iff $\\gamma =1/2.$ We conclude that the model accepts a scaling symmetry iff $\\gamma =1/2$ and that for this value of the viscous parameter, $\\Pi =\\varkappa \\rho ,$ but the hypothesis $\\Pi =\\varkappa \\rho $ does not imply $\\gamma =1/2,$ and that the model is scale invariant.

J. A. Belinchón

2004-12-19T23:59:59.000Z

426

Asymptotic properties of the development of conformally flat data near spatial infinity  

E-Print Network (OSTI)

Certain aspects of the behaviour of the gravitational field near null and spatial infinity for the developments of asymptotically Euclidean, conformally flat initial data sets are analysed. Ideas and results from two different approaches are combined: on the one hand the null infinity formalism related to the asymptotic characteristic initial value problem and on the other the regular Cauchy initial value problem at spatial infinity which uses Friedrich's representation of spatial infinity as a cylinder. The decay of the Weyl tensor for the developments of the class of initial data under consideration is analysed under some existence and regularity assumptions for the asymptotic expansions obtained using the cylinder at spatial infinity. Conditions on the initial data to obtain developments satisfying the Peeling Behaviour are identified. Further, the decay of the asymptotic shear on null infinity is also examined as one approaches spatial infinity. This decay is related to the possibility of selecting the Poincar\\'e group out of the BMS group in a canonical fashion. It is found that for the class of initial data under consideration, if the development peels, then the asymptotic shear goes to zero at spatial infinity. Expansions of the Bondi mass are also examined. Finally, the Newman-Penrose constants of the spacetime are written in terms of initial data quantities and it is shown that the constants defined at future null infinity are equal to those at past null infinity.

J. A. Valiente Kroon

2007-01-30T23:59:59.000Z

427

Time asymmetric spacetimes near null and spatial infinity. I. Expansions of developments of conformally flat data  

E-Print Network (OSTI)

The Conformal Einstein equations and the representation of spatial infinity as a cylinder introduced by Friedrich are used to analyse the behaviour of the gravitational field near null and spatial infinity for the development of data which are asymptotically Euclidean, conformally flat and time asymmetric. Our analysis allows for initial data whose second fundamental form is more general than the one given by the standard Bowen-York Ansatz. The Conformal Einstein equations imply upon evaluation on the cylinder at spatial infinity a hierarchy of transport equations which can be used to calculate in a recursive way asymptotic expansions for the gravitational field. It is found that the the solutions to these transport equations develop logarithmic divergences at certain critical sets where null infinity meets spatial infinity. Associated to these, there is a series of quantities expressible in terms of the initial data (obstructions), which if zero, preclude the appearance of some of the logarithmic divergences. The obstructions are, in general, time asymmetric. That is, the obstructions at the intersection of future null infinity with spatial infinity are different, and do not generically imply those obtained at the intersection of past null infinity with spatial infinity. The latter allows for the possibility of having spacetimes where future and past null infinity have different degrees of smoothness. Finally, it is shown that if both sets of obstructions vanish up to a certain order, then the initial data has to be asymptotically Schwarzschildean to some degree.

J. A. Valiente Kroon

2004-08-26T23:59:59.000Z

428

A multispectral scanner survey of the Rocky Flats Environmental Technology Site and surrounding area, Golden, Colorado  

SciTech Connect

Aerial multispectral scanner imagery was collected of the Rocky Flats Environmental Technology Site in Golden, Colorado, on June 3, 5, 6, and 7, 1994, using a Daedalus AADS1268 multispectral scanner and coincident aerial color and color infrared photography. Flight altitudes were 4,500 feet (1372 meters) above ground level to match prior 1989 survey data; 2,000 feet (609 meters) above ground level for sitewide vegetation mapping; and 1,000 feet (304 meters) above ground level for selected areas of special interest. A multispectral survey was initiated to improve the existing vegetation classification map, to identify seeps and springs, and to generate ARC/INFO Geographic Information System compatible coverages of the vegetation and wetlands for the entire site including the buffer zone. The multispectral scanner imagery and coincident aerial photography were analyzed for the detection, identification, and mapping of vegetation and wetlands. The multispectral scanner data were processed digitally while the color and color infrared photography were manually photo-interpreted to define vegetation and wetlands. Several standard image enhancement techniques were applied to the multispectral scanner data to assist image interpretation. A seep enhancement was applied and a color composite consisting of multispectral scanner channels 11, 7, and 5 (thermal infrared, mid-infrared, and red bands, respectively) proved most useful for detecting seeps, seep zones, and springs. The predawn thermal infrared data were also useful in identifying and locating seeps. The remote sensing data, mapped wetlands, and ancillary Geographic Information System compatible data sets were spatially analyzed for seeps.

Brewster, S.B. Jr.; Brickey, D.W.; Ross, S.L.; Shines, J.E.

1997-04-01T23:59:59.000Z

429

Exploration applications of a transgressive tidal flats model to Mississippian Midale carbonates, eastern Williston Basin  

SciTech Connect

Midale (Mississippian) production was first established in 1953 in Saskatchewan, Canada. The unit was initially defined in the subsurface as the carbonate interval between the top of the Frobisher Anhydrite and the base of the Midale Anhydrite. That nomenclature is used in this report. During 1953, Midale production was found in the United States portion of the Williston basin in Bottineau County, North Dakota. Later exploration extended Midale production westward into Burke County, North Dakota. Cumulative production from the Midale is approximately 660 million bbl, of which 640 million bbl are from Canadian fields. Initially, hydrocarbon entrapment in the Midale was believed to be controlled by the Mississippian subcrop, with the Burke County production controlled by low-relief structural closure. Petrographic examination of cores and cuttings from the Midale in both Saskatchewan, Canada, and Burke and Bottineau Counties, North Dakota, indicates that production is controlled by facies changes within the unit. Stratigraphic traps are formed by the lateral and vertical changes from grain-supported facies deposited in tidal channel, subtidal bar, or beach settings; seals are formed by mud-rich sediments. Use of a transgressive carbonate tidal flats model best explains current production patterns and indicates substantial potential for additional production in eastern North Dakota and South Dakota.

Porter, L.A.; Reid, R.S.R.

1985-05-01T23:59:59.000Z

430

Exploration applications of a transgressive tidal-flats model to Mississippian Midale carbonates, eastern Williston Basin  

SciTech Connect

Midale (Mississippian) production was first indicated in 1953 in Saskatchewan, Canada. The unit was initially defined in the subsurface as the carbonate interval between the top of the Frobisher Anhydrite and the base of the Midale Anhydrite. This same nomenclature is used in this paper. In 1953, Midale production was found on the US side of the Williston basin in Bottineau County, North Dakota. Later exploration extended Midale production westward into Burke County, North Dakota, in 1955. Cumulative production from the Midale is approximately 660 million bbl with 640 million from the Canadian side of the Williston basin. Initially, hydrocarbon entrapment in the Midale was believed to be controlled by the Mississippian subcrop, with the Burke County production controlled by low-relief structural closure. Petrographic examination of cores and cuttings from the Midale in both Saskatchewan, Canada, and Burke and Bottineau Counties, North Dakota, indicates that production is controlled by facies changes within the unit. Stratigraphic traps are formed by the lateral and vertical changes from grain-supported facies deposited in tidal-channel, subtidal-bar, or beach settings; seals are formed by mud-rich sediments. Use of a transgressive carbonate tidal-flats model best explains current production patterns and indicates substantial potential for additional production in eastern North Dakota and South Dakota.

Porter, L.A.; Reid, F.S.

1985-02-01T23:59:59.000Z

431

The behavior of radionuclides in the soils of Rocky Flats, Colorado  

Science Journals Connector (OSTI)

Radionuclide contamination of soils in Rocky Flats, Colorado, resulted from leaking drums of Pu-contaminated oil stored at an outdoor area. To evaluate the mechanisms of radionuclide transport from the contaminated soils to groundwater, an advanced monitoring system was installed across a toposequence. The impact of natural rain, snowmelt, and large-scale rain simulations on the mobility and distribution of the radionuclides in soil interstitial water was studied. The distribution of radionuclides during the monitoring period from 1993 to 1995 suggested that Pu-239 + 240 and Am241 are largely immobile in semi-arid soils. Large-scale rain simulations with a 100-year recurrence interval occasionally remobilized large fluxes of radionuclides that constitute between 1 and 3.3% of the stored Pu and Am in these soils. Fractionation of Pu-239 + 240 and Am-241 to different particle sizes in the soil interstitial water suggested that most of the radionuclides (83–97%) were associated with suspended particles, whereas the level of radionuclides associated with colloidal (0.45 ?m > X > 1nm) and nonfilterable (< 1 nm) fractions ranged from 1.5 to 15%.

M.I. Litaor; G. Barth; E.M. Zika; G. Litus; J. Moffitt; H. Daniels

1998-01-01T23:59:59.000Z

432

SCO shipments from Rocky Flats - Experience and current practice [Surface Contaminated Object  

SciTech Connect

Decommissioning activities at Rocky Flats Environmental Technology Site (RFETS) are expected to generate approximately 251,000 cubic meters of low-level radioactive waste. Almost half of this will be characterized and shipped as the Department of Transportation ''Surface Contaminated Object'' (SCO) shipping class. In the 2 years since an SCO characterization method was implemented, almost 11,000 of the 18,000 cubic meters of low-level waste were SCO. RFETS experience to-date using an SCO waste characterization method has shown significant time and cost savings, reduced errors, and enhanced employee safety. SCO waste is characterized prior to packaging, near the point of generation, by any of the site's 300 Radiological Control Technicians using inexpensive radiological control survey instruments. This reduces on-site waste container moves and eliminates radiometric analysis at centrally located drum or crate counters. Containers too large for crate counters can also be characterized. Current instrumentation is not adequate to take full advantage of the SCO regulations. Future improvements in the SCO characterization and shipping process are focused on use of larger and/or reusable containers, extended-range instruments, and additional statistical methods, so that the full extent of the SCO regulations can be used.

Bracken, Gary; Morris, Robert L.

2001-01-10T23:59:59.000Z

433

Evaluation of remedial alternatives for the Solar Ponds Plume, Rocky Flats Environmental Technology Site  

SciTech Connect

This paper describes the process used to select a remedial alternative for handling contaminated groundwater emanating from the Solar Evaporation Ponds (Solar Ponds) at the Rocky Flats Environmental Technology Site (RFETS) and prevent it from reaching the nearest surface water body, North Walnut Creek. Preliminary results of field investigations conducted to provide additional information for the alternatives analysis are also presented. The contaminated groundwater is referred to as the Solar Ponds Plume (SPP). The primary contaminants in the SPP are nitrate and uranium; however, some metals exceed the site action levels at several locations and volatile organic compounds, originating from other sources, also have been detected. Currently the SPP, local surface water runoff, and infiltrated precipitation are collected by a trench system located downgradient of the Solar Ponds and pumped to three storage tanks. The water (two to three million gallons annually) is then pumped to an on-site treatment plant for evaporation at an approximate cost of $7.57 per liter.

Hranac, K.C. [Morrison Knudsen Corp., Golden, CO (United States). Rocky Flats Environmental Technology Site; Chromec, F.W.; Fiehweg, R. [Rocky Mountain Remediation Services, Golden, CO (United States). Rocky Flats Environmental Technology Site; Hopkins, J. [Rocky Mountain Remediation Services, Los Alamos, NM (United States)

1998-07-01T23:59:59.000Z

434

The Rocky Flats Plant Waste Stream and Residue Identification and Characterization Program (WSRIC): Progress and achievements  

SciTech Connect

The Waste Stream and Residue Identification and Characterization (WSRIC) Program, as described in the WSRIC Program Description delineates the process knowledge used to identify and characterize currently-generated waste from approximately 5404 waste streams originating from 576 processes in 288 buildings at Rocky Flats Plant (RFP). Annual updates to the WSRIC documents are required by the Federal Facilities Compliance Agreement between the US Department of Energy, the Colorado Department of Health and the Environmental Protection Agency. Accurate determination and characterization of waste is a crucial component in RFP`s waste management strategy to assure compliance with Resource Conservation and Recovery Act (RCRA) storage and treatment requirements, as well as disposal acceptance criteria. The WSRIC Program was rebaselined in September 1992, and serves as the linchpin for documenting process knowledge in RFP`s RCRA operating record. Enhancements to the WSRIC include strengthening the waste characterization rationale, expanding WSRIC training for waste generators, and incorporating analytical information into the WSRIC building books. These enhancements will improve credibility with the regulators and increase waste generators` understanding of the basis for credible waste characterizations.

Ideker, V.L. [EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant; Doyle, G.M. [USDOE Rocky Flats Office, Golden, CO (United States)

1994-02-01T23:59:59.000Z

435

Development of a new flat stationary evacuated CPC-collector for process heat applications  

SciTech Connect

For the economical supply of solar process heat at temperatures between 120 and 150 C a new non-tracking, flat, low-concentrating collector has been developed. The new collector is an edge ray collector with a concentration of 1.8 and inert gas filling, existing of parallel mounted absorber-reflector units, aligned in east-west direction. The basic concept is the integration of an absorber tube and reflectors inside a low pressure enclosure. Asymmetrical reflectors below the headers with a concentration of 0.6X provide extra radiation and prevent longitudinal radiation losses. To suppress heat losses due to gas-convection inside, air or inert gas like krypton at a pressure below 10 mbar is used. A prototype, with an aperture area of 2.0 m{sup 2}, was tested in Munich and showed efficiencies of about 50% for krypton at 0.01 bar at a temperature of 150 C with a radiation of 1000 W/m{sup 2} (900 W/m{sup 2} direct, ambient temperature 20 C). (author)

Buttinger, Frank; Beikircher, Thomas; Proell, Markus; Schoelkopf, Wolfgang [Bavarian Center for Applied Energy Research (ZAE Bayern), Technology for Energy Systems and Renewable Energies, Walther-Meissner-Str. 6, 85748 Garching (Germany)

2010-07-15T23:59:59.000Z

436

Nondestructive assay (NDA) of fissile material solutions in tanks at Rocky Flats Environmental Technology Site  

SciTech Connect

Nondestructive assay of holdup in solution tanks at Rocky Flats has been performed to address criticality safety concerns since 1974. Destructive analysis techniques were used for quantification of the fissile material content of the tanks. With termination of operations in 1989, including sparging and sampling of tanks, a need arose for nondestructive assay of solutions in tanks to confirm previous inventory values. Gamma ray measurement methodologies were investigated and several techniques, including Poor Man`s Densitometry were implemented. These techniques have been applied to several different types of tanks including: annular, raschig ring filled, and pencil tanks. For the annular tanks ``Poor Man`s Densitometry`` is used, with the densities of the measured solutions normalized to the value of one ``accepted`` concentration tank. Measurement uncertainties for this technique has been better than was anticipated. Measurements are also performed at several levels to attempt to detect variations in density. For the current tank draining program, solution in tanks is assayed by the NDA gamma-ray technique before draining. Measurement results were obtained for plutonium, uranium, and mixtures of U/Pu solutions for concentrations ranging from less than 0.5 g/l to 150 g/l. Tanks with expected concentrations were used to establish a relationship between concentration and count rate. ``Bootstrapping`` calibration techniques were used in some cases to obtain quantitative results.

Fleissner, J.G.; Lamb, F.W.; Maul, M.R.

1995-07-01T23:59:59.000Z

437

Numerical Simulation of Inter-basin Groundwater Flow into Northern Yucca Flat, Nevada National Security Site, Using the Death Valley Regional Flow System Model  

SciTech Connect

Models of groundwater flow for the Yucca Flat area of the Nevada National Security Site (NNSS) are under development by the U.S. Department of Energy (DOE) for corrective action investigations of the Yucca Flat-Climax Mine Corrective Action Unit (CAU). One important aspect of these models is the quantity of inter-basin groundwater flow from regional systems to the north. This component of flow, together with its uncertainty, must be properly accounted for in the CAU flow models to provide a defensible regional framework for calculations of radionuclide transport that will support determinations of the Yucca Flat-Climax Mine contaminant boundary. Because characterizing flow boundary conditions in northern Yucca Flat requires evaluation to a higher level of detail than the scale of the Yucca Flat-Climax Mine CAU model can efficiently provide, a study more focused on this aspect of the model was required.

Pohlmann Karl,Ye Ming

2012-03-01T23:59:59.000Z

438

Mesophase Formation in Heavy Oil.  

E-Print Network (OSTI)

??Coke formation is a major problem in the petroleum industry because of its effect on liquid yield, catalyst deactivation, and fouling of reactor internals and… (more)

Bagheri, Seyed Reza

2012-01-01T23:59:59.000Z

439

Solid-State Halogen Atom Source for Chemical Dynamics and Etching...  

NLE Websites -- All DOE Office Websites (Extended Search)

Br and Br* in controllable quantities and velocities, thus providing an attractive UHV compatible solid-state radical atom source. The solid-state atom source is in principle...

440

In situ soft X-ray absorption spectroscopy investigation of electrochemical corrosion of copper in aqueous NaHCO3 solution  

E-Print Network (OSTI)

range requires the use of UHV instrumentation. However byseparate the samples from the UHV environment, soft x-rays1c) of the cell was made of a UHV compatible and chemically

Jiang, Peng

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Radionuclide distributions and migration mechanisms at shallow land burial sites. Annual report of research investigations on the distribution, migration and containment of radionuclides at Maxey Flats, Kentucky. [Maxey Flats  

SciTech Connect

Subsurface waters at Maxey Flats are anoxic systems with high alkalinity and high concentrations of dissolved ferrous ion. Americium and cobalt in these trench waters are made more soluble by the presence of EDTA, while strontium and cesium are unaffected under the same conditions. EDTA is the major organic complexing component in waste trench 27 leachate, but other polar, water-soluble organics are also present. Evidence points to the migration of plutonium between waste trench 27 and inert atmosphere wells as an EDTA complex. Polar organic compounds may influence the migration of /sup 90/Sr and /sup 137/Cs. The primary pathway of water entry into the waste burial trenches is through the trench caps, but major increases in water level have occurred in an experimental trench by subsurface flow. The areal distribution of radionuclides at Maxey Flats has been influenced by surface runoff, deposition from the evaporator plume, subsurface flow and the actions of burrowing animals or deep-rooted trees. Vegetal and surface contamination on site and near site are quite low, and only /sup 60/Co exceeds commonly observed fallout levels. Radionuclide concentrations in surface soil at Maxey Flats are comparable to concentrations resulting from normal fallout in other areas of high rainfall.

Kirby, L.J. (ed.)

1982-07-01T23:59:59.000Z

442

Understanding Contaminant Transport Pathways at Rocky Flats - A Basis for the Remediation Strategy  

SciTech Connect

The Rocky Flats Environmental Technology Site (RFETS) is a Department of Energy facility located approximately 16 miles northwest of Denver, Colorado. Processing and fabrication of nuclear weapons components occurred at Rocky Flats from 1952 through 1989. Operations at the Site included the use of several radionuclides, including plutonium-239/240 (Pu), americium-241 (Am), and various uranium (U) isotopes, as well as several types of chlorinated solvents. The historic operations resulted in legacy contamination, including contaminated facilities, process waste lines, buried wastes and surface soil contamination. Decontamination and removal of buildings at the site was completed in late 2005, culminating more than ten years of active environmental remediation work. The Corrective Action Decision/Record of Decision was subsequently approved in 2006, signifying regulatory approval and closure of the site. The use of RFETS as a National Wildlife Refuge is scheduled to be in full operation by 2012. To develop a plan for remediating different types of radionuclide contaminants present in the RFETS environment required understanding the different environmental transport pathways for the various actinides. Developing this understanding was the primary objective of the Actinide Migration Evaluation (AME) project. Findings from the AME studies were used in the development of RFETS remediation strategies. The AME project focused on issues of actinide behavior and mobility in surface water, groundwater, air, soil and biota at RFETS. For the purposes of the AME studies, actinide elements addressed included Pu, Am, and U. The AME program, funded by DOE, brought together personnel with a broad range of relevant expertise in technical investigations. The AME advisory panel identified research investigations and approaches that could be used to solve issues related to actinide migration at the Site. An initial step of the AME was to develop a conceptual model to provide a qualitative description of the relationships among potential actinide sources and transport pathways at RFETS. One conceptual model was developed specifically for plutonium and americium, because of their similar geochemical and transport properties. A separate model was developed for uranium because of its different properties and mobility in the environment. These conceptual models were guidelines for quantitative analyses described in the RFETS Pathway Analysis Report, which used existing data from the literature as well as site-specific analyses, including field, laboratory and modeling studies to provide quantitative estimates of actinide migration in the RFETS environment. For pathways where more than one method was used to estimate offsite loads for a specific pathway, the method yielding the highest estimated off-site was used for comparison purposes. For all actinides studied, for pre-remediation conditions, air and surface water were identified to be the dominant transport mechanisms. The estimated annual airborne plutonium-239/240 load transported off site exceeded the surface water load by roughly a factor of 40. However, despite being the largest transport pathway, airborne radionuclide concentrations at the monitoring location with the highest measurements during the period studied were less than two percent of the allowable 10 milli-rem standard governing DOE facilities. Estimated actinide loads for other pathways were much less. Shallow groundwater was approximately two orders of magnitude lower, or 1/100 of the load conveyed in surface water. The estimated biological pathway load for plutonium was approximately five orders of magnitude less, or 1/100,000, of the load estimated for surface-water. The pathway analysis results were taken into consideration during subsequent remediation activities that occurred at the site. For example, when the 903 Pad area was remediated to address elevated concentrations of Pu and Am in the surface soil, portable tent structures were constructed to prevent wind and water erosion from occurring while remediation activitie

Paton, Ian [Wright Water Engineers, Inc.: 2490 W. 26th Avenue, Suite 100A, Denver, CO 80211 (United States)

2008-01-15T23:59:59.000Z

443

THE LUMINOSITY FUNCTION OF FERMI-DETECTED FLAT-SPECTRUM RADIO QUASARS  

SciTech Connect

Fermi has provided the largest sample of {gamma}-ray-selected blazars to date. In this work we use a complete sample of flat spectrum radio quasars (FSRQs) detected during the first year of operation to determine the luminosity function (LF) and its evolution with cosmic time. The number density of FSRQs grows dramatically up to redshift {approx}0.5-2.0 and declines thereafter. The redshift of the peak in the density is luminosity dependent, with more luminous sources peaking at earlier times; thus the LF of {gamma}-ray FSRQs follows a luminosity-dependent density evolution similar to that of radio-quiet active galactic nuclei. Also, using data from the Swift Burst Alert Telescope we derive the average spectral energy distribution (SED) of FSRQs in the 10 keV-300 GeV band and show that there is no correlation between the luminosity at the peak of the {gamma}-ray emission component and its peak frequency. Using this luminosity-independent SED with the derived LF allows us to predict that the contribution of FSRQs to the Fermi isotropic {gamma}-ray background is 9.3{sup +1.6}{sub -1.0}% ({+-}3% systematic uncertainty) in the 0.1-100 GeV band. Finally we determine the LF of unbeamed FSRQs, finding that FSRQs have an average Lorentz factor of {gamma} = 11.7{sup +3.3}{sub -2.2}, that most are seen within 5 Degree-Sign of the jet axis, and that they represent only {approx}0.1% of the parent population.

Ajello, M.; Shaw, M. S.; Romani, R. W.; Costamante, L.; Reimer, A. [W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305 (United States); Dermer, C. D. [Space Science Division, Naval Research Laboratory, Washington, DC 20375-5352 (United States); King, O. G.; Max-Moerbeck, W.; Readhead, A.; Richards, J. L.; Stevenson, M., E-mail: majello@slac.stanford.edu, E-mail: msshaw@stanford.edu, E-mail: rwr@astro.stanford.edu [Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA 91125 (United States)

2012-06-01T23:59:59.000Z

444

Hydrogeologic investigation of the Maxey Flats radioactive waste burial site, Fleming County, Kentucky  

SciTech Connect

Part of a hilltop named Maxey Flats was used as a commercial radioactive waste burial site from 1963 to 1977. The hill is about 9 miles from the city of Morehead. The climate of the area is humid, with normal annual precipitation 44.30 in. for the period 1941 through 1970. Most of the 47 burial trenches on the site are completed in weathered shale. They are covered with clay and crushed shale, but water infiltrates the covers and accumulates in the waste. The contaminated trench water is later removed and evaporated. Assuming water in trenches would not overflow onto the ground surface, flow through fractured rocks would be the principal means of contaminated-water transport if trench water were to move from the burial site. The bases of most trenches consist of a 1.5-ft-thick sandstone bed, at a depth of about 25 ft below ground level. Radionuclides have moved laterally through fractures in the bed as much as 270 feet from the nearest burial trench. Rocks underlying the burial site are of Mississippian, Devonian, and Silurian age, about 80% of which are shale. The bedrock has poor water-transmitting capability, and virtually all flow is through fractures. The spacing between most fractures is several feet, although it ranges from a few inches to more than 100 ft. Most fractures terminate, or are offset, at bedding planes. The ground-water system is therefore very nonuniform, and more permeable in the horizontal direction. At least eight hydrologic units underlie the burial site.

Zehner, H.H.

1983-01-01T23:59:59.000Z

445

Trench water-soil chemistry and interactions at the Maxey Flats Site  

SciTech Connect

This report is part of an overall program designed to provide an understanding of and to monitor the behavior of existing low-level sites. This investigation will provide source term data for radionuclides and other solutes in trench waters and will describe the physical, chemical, and biological properties of the geochemical system that controls radionuclide movement. General conclusions can be made from the data in terms of source term information to be used in modeling efforts, as well as processes which may affect radionuclide migration. Trench waters are complex anoxic chemical systems which require more extensive investigation to assess their role in radionuclide retention and mobilization. No overall systematic changes in the disposal site trenches were observed during the brief sampling interval. However, changes in some radionuclide and cation concentrations were observed in several trenches. Numerous organic compounds were identified in trench waters at Maxey Flats, some of which have the potential for chelation with radionuclides. The presence of radionuclides and organic compounds in wells UB1 and UB1-A and in nearby trenches indicates communication between the wells and trench water leachates by subsurface migration. Radionuclides were also measured in the new experimental trench dug parallel to trench 27. Aerobic, anaerobic, sulfate reducing, denitrifying, and methanogenic bacteria are present in the leachate samples, and are able to grow anaerobically in trench leachates. Experimental results indicate that the observed sorption K/sub d/ is a function of both solid and liquid phase compositional variations as well as contact time. The observation that e lowest K/sub d/ results are observed with anoxic trench waters and ultrasonicated soils points to the need to use site specific materials and experimental conditions which simulate in situ conditions as closely as possible.

Weiss, A.J.; Czyscinski, K.S.

1980-01-01T23:59:59.000Z

446

Parameter constraints for flat cosmologies from CMB and 2dFGRS power spectra  

E-Print Network (OSTI)

We constrain flat cosmological models with a joint likelihood analysis of a new compilation of data from the cosmic microwave background (CMB) and from the 2dF Galaxy Redshift Survey (2dFGRS). Fitting the CMB alone yields a known degeneracy between the Hubble constant h and the matter density Omega_m, which arises mainly from preserving the location of the peaks in the angular power spectrum. This `horizon-angle degeneracy' is considered in some detail and shown to follow a simple relation Omega_m h^{3.4} = constant. Adding the 2dFGRS power spectrum constrains Omega_m h and breaks the degeneracy. If tensor anisotropies are assumed to be negligible, we obtain values for the Hubble constant h=0.665 +/- 0.047, the matter density Omega_m=0.313 +/- 0.055, and the physical CDM and baryon densities Omega_c h^2 = 0.115 +/- 0.009, Omega_b h^2 = 0.022 +/- 0.002 (standard rms errors). Including a possible tensor component causes very little change to these figures; we set a upper limit to the tensor-to-scalar ratio of r<0.7 at 95% confidence. We then show how these data can be used to constrain the equation of state of the vacuum, and find w<-0.52 at 95% confidence. The preferred cosmological model is thus very well specified, and we discuss the precision with which future CMB data can be predicted, given the model assumptions. The 2dFGRS power-spectrum data and covariance matrix, and the CMB data compilation used here, are available from http://www.roe.ac.uk/~wjp/

Will J. Percival; Will Sutherland; John A. Peacock; Carlton M. Baugh; Joss Bland-Hawthorn; Terry Bridges; Russell Cannon; Shaun Cole; Matthew Colless; Chris Collins; Warrick Couch; Gavin Dalton; Roberto De Propris; Simon P. Driver; George Efstathiou; Richard S. Ellis; Carlos S. Frenk; Karl Glazebrook; Carole Jackson; Ofer Lahav; Ian Lewis; Stuart Lumsden; Steve Maddox; Stephen Moody; Peder Norberg; Bruce A. Peterson; Keith Taylor

2002-08-22T23:59:59.000Z

447

Dynamics and constraints of the massive graviton dark matter flat cosmologies  

SciTech Connect

We discuss the dynamics of the Universe within the framework of the massive graviton cold dark matter scenario (MGCDM) in which gravitons are geometrically treated as massive particles. In this modified gravity theory, the main effect of the gravitons is to alter the density evolution of the cold dark matter component in such a way that the Universe evolves to an accelerating expanding regime, as presently observed. Tight constraints on the main cosmological parameters of the MGCDM model are derived by performing a joint likelihood analysis involving the recent supernovae type Ia data, the cosmic microwave background shift parameter, and the baryonic acoustic oscillations as traced by the Sloan Digital Sky Survey red luminous galaxies. The linear evolution of small density fluctuations is also analyzed in detail. It is found that the growth factor of the MGCDM model is slightly different ({approx}1-4%) from the one provided by the conventional flat {Lambda}CDM cosmology. The growth rate of clustering predicted by MGCDM and {Lambda}CDM models are confronted to the observations and the corresponding best fit values of the growth index ({gamma}) are also determined. By using the expectations of realistic future x-ray and Sunyaev-Zeldovich cluster surveys we derive the dark matter halo mass function and the corresponding redshift distribution of cluster-size halos for the MGCDM model. Finally, we also show that the Hubble flow differences between the MGCDM and the {Lambda}CDM models provide a halo redshift distribution departing significantly from the those predicted by other dark energy models. These results suggest that the MGCDM model can observationally be distinguished from {Lambda}CDM and also from a large number of dark energy models recently proposed in the literature.

Basilakos, S.; Plionis, M.; Alves, M. E. S.; Lima, J. A. S. [Academy of Athens, Research Center for Astronomy and Applied Mathematics, Soranou Efesiou 4, 11527, Athens (Greece); Institute of Astronomy and Astrophysics, National Observatory of Athens, Thessio 11810, Athens, Greece, and Instituto Nacional de Astrofisica, Optica y Electronica, 72000 Puebla (Mexico); Instituto de Ciencias Exatas, Universidade Federal de Itajuba, Av. BPS, 1303, 37500-903, Itajuba, MG (Brazil); Departamento de Astronomia (IAGUSP), Universidade de Sao Paulo, Rua do Matao, 1226, 05508-900, Sao Paulo (Brazil)

2011-05-15T23:59:59.000Z

448

Atomically flat La-silicate/Si interface using tungsten carbide gate electrode with nano-sized grain  

SciTech Connect

Interface properties of La-silicate gate dielectrics on Si substrates with W or nano-sized grain W{sub 2}C gate electrodes have been investigated. A low interface state density of 2.5?×?10{sup 11}?cm{sup ?2}/eV has been achieved with W{sub 2}C gate electrodes, which is one third of those with W gate electrode. An interface roughness of 0.33?nm with spatial frequency comparable to the grain size of W gate electrode has been observed. Besides, an atomically flat interface of 0.12?nm has been obtained with W{sub 2}C gate electrode. The origin of flat interface may be attributed to the elimination of inhomogeneous stress by grains in metal electrode.

Tuokedaerhan, K.; Natori, K.; Iwai, H. [Frontier Research Center, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503 (Japan); Kakushima, K., E-mail: kakushima@ep.titech.ac.jp; Kataoka, Y.; Nishiyama, A.; Sugii, N.; Wakabayashi, H.; Tsutsui, K. [Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502 (Japan)

2014-01-13T23:59:59.000Z

449

Corrective Action Investigation Plan for Corrective Action Unit 98: Frenchman Flat, Nevada Test Site, Nevada (Revision 1)  

SciTech Connect

This Corrective Action Investigation Plan (CAIP) has been developed for Frenchman Flat Corrective Action Unit (CAU) 98. The Frenchman Flat CAU is located along the eastern border of the Nevada Test Site (NTS) and includes portions of Areas 5 and 11. The Frenchman Flat CAU constitutes one of several areas of the Nevada Test Site used for underground nuclear testing in the past. The nuclear tests resulted in groundwater contamination in the vicinity as well as downgradient of the underground test areas. The CAIP describes the Corrective Action Investigation (CAI) to be conducted at the Frenchman Flat CAU to evaluate the extent of contamination in groundwater due to the underground nuclear testing. The Frenchman Flat CAI will be conducted by the Underground Test Area (UGTA) Project which is a part of the U.S. Department of Energy, Nevada Operations Office (DOE/NV) Environmental Restoration Project. The CAIP is a requirement of the Federal Facility Agreement and Consent Order (FFACO) (1996 ) agreed to by the U.S. Department of Energy (DOE), the Nevada Division of Environmental Protection (NDEP), and the U.S. Department of Defense (DoD). Based on the general definition of a CAI from Section IV.14 of the FFACO, the purpose of the CAI is ''...to gather data sufficient to characterize the nature, extent, and rate of migration or potential rate of migration from releases or discharges of pollutants or contaminants and/or potential releases or discharges from corrective action units identified at the facilities...'' (FFACO, 1996). However, for the Underground Test Area (UGTA) CAUs, ''...the objective of the CAI process is to define boundaries around each UGTA CAU that establish areas that contain water that may be unsafe for domestic and municipal use.'', as stated in Appendix VI of the FFACO (1996). According to the UGTA strategy (Appendix VI of the FFACO), the CAI of a given CAU starts with the evaluation of the existing data. New data collection activities are generally contingent upon the results of the modeling and may or may not be part of the CAI. Such is the case for the Frenchman Flat CAU. The current scope of the Frenchman Flat CAI includes the development and use of a three-dimensional (3-D), numerical, CAU-scale groundwater flow and contaminant transport model to predict the location of the contaminant boundary. The CAU model will be developed and used to predict the location of the contaminant boundary. The scope of this CAI does not currently include any characterization activities; however, such activities will be conducted if the CAU model results indicate that further characterization information is needed to develop a sufficiently reliable CAU model. Two areas of importance to the CAU model are the model area and the investigation area. The CAU-model area will be selected to encompass the Frenchman Flat CAU and the region located immediately downgradient where contamination may migrate. The extent of the CAU-model area is dependent on the extent of contamination and is uncertain at this point. The extent of the investigation area is not expected to increase during the CAI.

USDOE/NV

1999-07-01T23:59:59.000Z

450

Letter Report Yucca Mountain Environmental Monitoring Systems Initiative - Air Quality Scoping Study for Crater Flat, Nye County, Nevada  

SciTech Connect

The Desert Research Institute (DRI) is performing a scoping study as part of the U.S. Department of Energy's Yucca Mountain Environmental Monitoring Systems Initiative (EMSI). The main objective is to obtain baseline air quality information for Yucca Mountain and an area surrounding the Nevada Test Site (NTS). Air quality and meteorological monitoring and sampling equipment housed in a mobile trailer (shelter) (cover page figure) is collecting data at eight sites outside the NTS, including Ash Meadows National Wildlife Refuge (NWR), Beatty, Sarcobatus Flats, Rachel, Caliente, Pahranagat NWR, Crater Flat, and Tonopah Airport, and at four sites on the NTS (Engelbrecht et al., 2007a-d). The trailer is stationed at any one site for approximately eight weeks at a time. This letter report provides a summary of air quality and meteorological data, on completion of the site's sampling program.

J. Engelbrecht; I. Kavouras; D. Campbell; S.Campbell; S. Kohl; D. Shafer

2009-04-02T23:59:59.000Z

451

Letter Report: Yucca Mountain Environmental Monitoring Systems Initiative - Air Quality Scoping Study for Crater Flat, Nye County, Nevada  

SciTech Connect

The Desert Research Institute (DRI) is performing a scoping study as part of the U.S. Department of Energy's Yucca Mountain Environmental Monitoring Systems Initiative (EMSI). The main objective is to obtain baseline air quality information for Yucca Mountain and an area surrounding the Nevada Test Site (NTS). Air quality and meteorological monitoring and sampling equipment housed in a mobile trailer (shelter) (cover page figure) is collecting data at eight sites outside the NTS, including Ash Meadows National Wildlife Refuge (NWR), Beatty, Sarcobatus Flats, Rachel, Caliente, Pahranagat NWR, Crater Flat, and Tonopah Airport, and at four sites on the NTS (Engelbrecht et al., 2007a-d). The trailer is stationed at any one site for approximately eight weeks at a time. This letter report provides a summary of air quality and meteorological data, on completion of the site's sampling program.

J. Engelbrecht; I. Kavouras; D. Campbell; S. Campbell; S. Kohl; D. Shafer

2008-08-01T23:59:59.000Z

452

GIS surface effects archive of underground nuclear detonations conducted at Yucca Flat and Pahute Mesa, Nevada Test Site, Nevada  

SciTech Connect

This report presents a new comprehensive, digital archive of more than 40 years of geologic surface effects maps produced at individual detonation sites throughout the Yucca Flat and Pahute Mesa nuclear testing areas of the Nevada Test Site, Nye County, Nevada. The Geographic Information System (GIS) surface effects map archive on CD-ROM (this report) comprehensively documents the surface effects of underground nuclear detonations conducted at two of the most extensively used testing areas of the Nevada Test Site. Between 1951 and 1992, numerous investigators of the U.S. Geological Survey, the Los Alamos National Laboratory, the Lawrence Livermore National Laboratory, and the Defense Threat Reduction Agency meticulously mapped the surface effects caused by underground nuclear testing. Their work documented the effects of more than seventy percent of the underground nuclear detonations conducted at Yucca Flat and all of the underground nuclear detonations conducted at Pahute Mesa.

Grasso, D.N.

2001-11-02T23:59:59.000Z

453

Water-Chemistry Evolution and Modeling of Radionuclide Sorption and Cation Exchange during Inundation of Frenchman Flat Playa  

SciTech Connect

Atmospheric tests and other experiments with nuclear materials were conducted on the Frenchman Flat playa at the Nevada National Security Site, Nye County, Nevada; residual radionuclides are known to exist in Frenchman Flat playa soils. Although the playa is typically dry, extended periods of winter precipitation or large single-event rainstorms can inundate the playa. When Frenchman Flat playa is inundated, residual radionuclides on the typically dry playa surface may become submerged, allowing water-soil interactions that could provide a mechanism for transport of radionuclides away from known areas of contamination. The potential for radionuclide transport by occasional inundation of the Frenchman Flat playa was examined using geographic information systems and satellite imagery to delineate the timing and areal extent of inundation; collecting water samples during inundation and analyzing them for chemical and isotopic content; characterizing suspended/precipitated materials and archived soil samples; modeling water-soil geochemical reactions; and modeling the mobility of select radionuclides under aqueous conditions. The physical transport of radionuclides by water was not evaluated in this study. Frenchman Flat playa was inundated with precipitation during two consecutive winters in 2009-2010 and 2010-2011. Inundation allowed for collection of multiple water samples through time as the areal extent of inundation changed and ultimately receded. During these two winters, precipitation records from a weather station in Frenchman Flat (Well 5b) provided information that was used in combination with geographic information systems, Landsat imagery, and image processing techniques to identify and quantify the areal extent of inundation. After inundation, water on the playa disappeared quickly, for example, between January 25, 2011 and February 10, 2011, a period of 16 days, 92 percent of the areal extent of inundation receded (2,062,800 m2). Water sampling provided valuable information about chemical processes occurring during inundation as the water disappeared. Important observations from water-chemistry analyses included: 1) total dissolved solids (TDS) and chloride ion (Cl-) concentrations were very low (TDS: < 200 mg/L and Cl-: < 3.0 mg/L, respectively) for all water samples regardless of time or areal extent; 2) all dissolved constituents were at concentrations well below what might be expected for evaporating shallow surface waters on a playa, even when 98 to 99 percent of the water had disappeared; 3) the amount of evaporation for the last water samples collected at the end of inundation, estimated with the stable isotopic ratios ?2H or ?18O, was approximately 60 percent; and 4) water samples analyzed by gamma spectroscopy did not show any man-made radioactivity; however, the short scanning time (24 hours) and relative chemical diluteness of the water samples (TDS ranged between 39 and 190 mg/L) may have contributed to none being detected. Additionally, any low-energy beta emitting radionuclides would not have been detected by gamma spectroscopy. From these observations, it was apparent that a significant portion of water on the playa did not evaporate, but rather infiltrated into the subsurface (approximately 40 percent). Consistent with this water chemistry-based conclusion is particle-size analysis of two archived Frenchman Flat playa soils samples, which showed low clay content in the near surface soil that also suggested infiltration. Infiltration of water from the playa during inundation into the subsurface does not necessarily imply that groundwater recharge is occurring, but it does provide a mechanism for moving residual radionuclides downward into the subsurface of Frenchman Flat playa. Water-mineral geochemical reactions were modeled so that changes in the water chemistry could be identified and the extent of reactions quantified. Geochemical modeling showed that evaporation; equilibrium with atmospheric carbon dioxide and calcite; dissolution of sodium chloride, gypsum, and composite volcanic g

Hershey, Ronald; Cablk, Mary; LeFebre, Karen; Fenstermaker, Lynn; Decker, David

2013-08-01T23:59:59.000Z

454

Disposition of Uranium -233 (sup 233U) in Plutonium Metal and Oxide at the Rocky Flats Environmental Technology Site  

SciTech Connect

This report documents the position that the concentration of Uranium-233 ({sup 233}U) in plutonium metal and oxide currently stored at the DOE Rocky Flats Environmental Technology Site (RFETS) is well below the maximum permissible stabilization, packaging, shipping and storage limits. The {sup 233}U stabilization, packaging and storage limit is 0.5 weight percent (wt%), which is also the shipping limit maximum. These two plutonium products (metal and oxide) are scheduled for processing through the Building 371 Plutonium Stabilization and Packaging System (PuSPS). This justification is supported by written technical reports, personnel interviews, and nuclear material inventories, as compiled in the ''History of Uranium-233 ({sup 233}U) Processing at the Rocky Flats Plant In Support of the RFETS Acceptable Knowledge Program'' RS-090-056, April 1, 1999. Relevant data from this report is summarized for application to the PuSPS metal and oxide processing campaigns.

Freiboth, Cameron J.; Gibbs, Frank E.

2000-03-01T23:59:59.000Z

455

Rocky Flats Plant: Test bed for transitioning from weapons production mission to environmental restoration, waste management, and economic development missions  

SciTech Connect

Redirection of Rocky Flats Plant`s (RF) mission is an inevitable result of changes in the worldwide social, political, and environmental factors. These changes were exemplified in the cancellation of the W-88 Warhead in January 1992, by the President of the United States. These unprecedented changes have altered the RF`s traditional nuclear weapons production mission to the transition mission, i.e., cleanup, preparation for deactivation and decontamination, decommissioning, dismantlement and demolition, and when appropriate, economic development, of the facilities. The purpose of this paper is to describe the essentials of the technical approach and management actions advanced by EG&G Rocky Flats, Inc., to organize, staff, direct, and control the activities necessary to transition the RF from its historical weapons production mission to the transition mission.

Benjamin, A.; Murthy, K.S.; Krenzer, R.W.; Williams, R.E.; Detamore, J.A.; Brown, C.M.; Francis, G.E.; Lucerna, J.J.

1993-01-07T23:59:59.000Z

456

Resumption of thermal stabilization of plutonium oxide in Building 707, Rocky Flats Plant, Golden, Colorado. Environmental Assessment  

SciTech Connect

The Department of Energy is proposing thermal stabilization to enhance the safe storage of plutonium at Rocky Flats Plant until decisions are made on long-term storage and disposition of the material. The proposed action is to resume thermal stabilization of pyrophoric plutonium in Building 707 at Rocky Flats Plant. Thermal stabilization would heat the pyrophoric plutonium under controlled conditions in a glovebox furnace to promote full oxidation and convert the material into stable plutonium oxide in the form of PuO{sub 2}. Other activities associated with thermal stabilization would include post-stabilization characterization of non-pyrophoric plutonium and on-site movement of pyrophoric and non-pyrophoric plutonium. This report covers; purpose and need; proposed action; alternatives to the proposed action; affected environment; environmental effects of proposed action and no action alternative; agencies and person consulted; and public participation.

Not Available

1994-02-01T23:59:59.000Z

457

Two-dimensional velocity models for paths from Pahute Mesa and Yucca Flat to Yucca Mountain; Yucca Mountain Project  

SciTech Connect

Vertical acceleration recordings of 21 underground nuclear explosions recorded at stations at Yucca Mountain provide the data for development of three two-dimensional crystal velocity profiles for portions of the Nevada Test Site. Paths from Area 19, Area 20 (both Pahute Mesa), and Yucca Flat to Yucca Mountain have been modeled using asymptotic ray theory travel time and synthetic seismogram techniques. Significant travel time differences exist between the Yucca Flat and Pahute Mesa source areas; relative amplitude patterns at Yucca Mountain also shift with changing source azimuth. The three models, UNEPM1, UNEPM2, and UNEYF1, successfully predict the travel time and amplitude data for all three paths. 24 refs., 34 figs., 8 tabs.

Walck, M.C.; Phillips, J.S.

1990-11-01T23:59:59.000Z

458

Convective currents in nucleate pool boiling and their effects on the heat flux from varying diameter flat plate heating elements  

E-Print Network (OSTI)

investigation was conducred to amine the effects of convection currents in nucleate oool boil ing and to determine the changes in critical heat flux caused by varying the diameter of horizontal flat olate heating surfaces. Freon 113 (Trichlorotrifluoroethane... by high energy costs and thc need to economize in industrial heat transfer applications . I'nucleate boiling is a very efficient neans of heat transfer because of the large sur ace areas involved in vaporization of the bulk fluid. as bubbles form...

Morford, Peter Stephen

1980-01-01T23:59:59.000Z

459

The September 1957 Rocky Flats fire: A guide to record series of the Department of Energy and its contractors  

SciTech Connect

The primary purpose of this guide is to help the DOE locate and make available information relating to the 1957 Rocky Flats fire. The records are arranged into six categories: administrative and general; facilities and equipment; production and materials handling; waste management; workplace and environmental monitoring; and employee occupational exposure and health. A brief explanation of each category follows. The administrative and general section pertains to the administration of individual contractor organizations and DOE divisions at Rocky Flats. It also contains records which encompass several different subject areas and therefore can not be placed in a single category. The facilities and equipment category relates to the routine construction and maintenance of plant buildings as well as the purchase and installation of equipment. The production and materials handling records relate primarily to the inventory and production of nuclear materials and weapons components. The waste management records series found under this heading relate to the storage, handling, treatment, and disposal of radioactive, chemical or mixed materials produced or used at Rocky Flats. The records consist mostly of waste sampling and shipment records. The workplace and environmental monitoring records series found in this section pertain to monitoring of the workplace. The section also includes records that document efforts to monitor the environment outside of buildings, either onsite or offsite. Records in this category consist of sampling data and environmental impact reports. The employee occupational exposure and health section pertains to documentation relating to the health and occupational exposures of employees and visitors at Rocky Flats. Records series consist generally of dosimeter data, radiation exposure records, and medical records. Many of the records contain personal data pertaining to individual employees and may therefore be Privacy Act systems and records.

NONE

1995-07-19T23:59:59.000Z

460

Telephone Flat Geothermal Development Project Environmental Impact Statement Environmental Impact Report. Final: Comments and Responses to Comments  

SciTech Connect

This document is the Comments and Responses to Comments volume of the Final Environmental Impact Statement and Environmental Impact Report prepared for the proposed Telephone Flat Geothermal Development Project (Final EIS/EIR). This volume of the Final EIS/EIR provides copies of the written comments received on the Draft EIS/EIR and the leady agency responses to those comments in conformance with the requirements of the National Environmental Policy Act (NEPA) and the California Environmental Quality Act (CEQA).

None

1999-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "format uhv-compatible flat" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Trees as indicators of subterranean migration of tritium at a commercial shallow land radioactive waste disposal site. [Maxey Flats, KY  

SciTech Connect

Leaf water and tree sap collected from deciduous trees in a natural forest growing outside the fenced exclusion area of the Maxey Flats Waste Disposal Facility in eastern Kentucky, USA were radiochemically analyzed to detect movement of tritium via subterranean flows of water at depths of three meters. These data indicate that trees can be used to detect the subterranean migration of tritium from shallow land burial sites. 4 references, 5 figures, 1 table.

Rickard, W.H.; Kirby, L.J.

1984-09-01T23:59:59.000Z

462

An assessment of criticality safety at the Department of Energy Rocky Flats Plant, Golden, Colorado, July--September 1989  

SciTech Connect

This is a report on the 1989 independent Criticality Safety Assessment of the Rocky Flats Plant, primarily in response to public concerns that nuclear criticality accidents involving plutonium may have occurred at this nuclear weapon component fabrication and processing plant. The report evaluates environmental issues, fissile material storage practices, ventilation system problem areas, and criticality safety practices. While no evidence of a criticality accident was found, several recommendations are made for criticality safety improvements. 9 tabs.

Not Available

1989-09-01T23:59:59.000Z

463

Review and reconnaissance of the hydrogeology of Tertiary sedimentary rocks in the vicinity of Frenchman Flat, Nevada Test Site  

SciTech Connect

Work is currently underway within the Underground Test Area (UGTA) subproject of the US Department of Energy/Nevada Operations Office Environmental Restoration Program to develop corrective action plans in support of the overall corrective action strategy for the Nevada Test Site (NTS) as established in the Federal Facility Agreement and Consent Order (FFACO, 1996). A closure plan is currently being developed for Frenchman Flat, which has been identified in the FFACO as a Corrective Action Unit (CAU). Part of this effort requires that hydrogeologic data be compiled for inclusion in a CAU-specific hydrologic flow and transport model that will be used to predict contaminant boundaries. Hydrogeologic maps and cross sections are currently being prepared for use in the model to define the nature and extent of aquifers and confining units that might influence the flow of contaminated groundwater from underground nuclear tests conducted in Frenchman Flat. During this effort, it has been found that older Tertiary-age sediments might be hydrogeologically important in the Frenchman Flat model area. Although the character and extent of these units are poorly known, there is reason to believe that in some parts of Frenchman Flat they may lie between the regional Lower Carbonate Aquifer (LCA) and the younger Tertiary saturated alluvium and volcanic units in which several underground nuclear tests were conducted. It was not possible to quickly determine their extent, or ascertain whether or not these units might act as confining units or aquifers. The work described in this report was done to gain a better understanding of the hydrogeology of these rocks.

Prothro, L.B.; Drellack, S.L. Jr.

1997-09-01T23:59:59.000Z

464

formatting | OpenEI Community  

Open Energy Info (EERE)

formatting formatting Home Jweers's picture Submitted by Jweers(83) Contributor 7 August, 2013 - 18:23 New Robust References! citation citing developer formatting reference Semantic Mediawiki wiki Check out the new Reference Form. Adding a reference object to OpenEI using this form is the most complete way to cite a reference. After providing the name of your reference, the form will ask for your document type. Rmckeel's picture Submitted by Rmckeel(297) Contributor 25 June, 2013 - 07:39 How to create formatted blocks to hold OpenEI wiki content content formatting user interface wiki The OpenEI wiki frontpage uses "boxes" that help organize content. These boxes are frequently re-used across the site. Syndicate content 429 Throttled (bot load) Error 429 Throttled (bot load)

465

Phase II Transport Model of Corrective Action Unit 98: Frenchman Flat, Nevada Test Site, Nye County, Nevada, Revision 1  

SciTech Connect

This document, the Phase II Frenchman Flat transport report, presents the results of radionuclide transport simulations that incorporate groundwater radionuclide transport model statistical and structural uncertainty, and lead to forecasts of the contaminant boundary (CB) for a set of representative models from an ensemble of possible models. This work, as described in the Federal Facility Agreement and Consent Order (FFACO) Underground Test Area (UGTA) strategy (FFACO, 1996; amended 2010), forms an essential part of the technical basis for subsequent negotiation of the compliance boundary of the Frenchman Flat corrective action unit (CAU) by Nevada Division of Environmental Protection (NDEP) and National Nuclear Security Administration Nevada Site Office (NNSA/NSO). Underground nuclear testing via deep vertical shafts was conducted at the Nevada Test Site (NTS) from 1951 until 1992. The Frenchman Flat area, the subject of this report, was used for seven years, with 10 underground nuclear tests being conducted. The U.S. Department of Energy (DOE), NNSA/NSO initiated the UGTA Project to assess and evaluate the effects of underground nuclear tests on groundwater at the NTS and vicinity through the FFACO (1996, amended 2010). The processes that will be used to complete UGTA corrective actions are described in the “Corrective Action Strategy” in the FFACO Appendix VI, Revision No. 2 (February 20, 2008).

Gregg Ruskuaff

2010-01-01T23:59:59.000Z

466

Study of a solar air flat plate collector: use of obstacles and application for the drying of grape  

Science Journals Connector (OSTI)

In the solar air flat plate collector, the insufficiency of the thermal exchange between the fluid and the absorber obliges the user to enhance their optimization. This low thermal exchange does not allow these systems to obtain their best performance or the best thermal efficiency. In our experimental study, which consists of a solar energy simulation, we have sought to improve the efficiency–temperature rise couple of the flat plate solar collector by considering several types of obstacles disposed in rows in the dynamic air vein of the flat collector. Thus, we have proceeded to the application of the best two systems (WDL1) and (TL) for drying an agricultural product grape. By comparing with the collector without obstacles (WO), the thermal transfers and, consequently, the output temperature (TOC) and the collector efficiency (?) are clearly improved. The drying times obtained with the proposed systems are very interesting. The heat quantities obtained in the case of WDL1 are very important compared with the collector WO. However, the entry to the drying cupboard of this high temperature (TOC) in the vicinity of the solar midday must be limited to the maximal value demanded by the considered product.

A Abene; V Dubois; M Le Ray; A Ouagued

2004-01-01T23:59:59.000Z

467

An Expert Elicitation Process in Support of Groundwater Model Evaluation for Frenchman Flat, Nevada National Security Site  

SciTech Connect

The U.S. Department of Energy is implementing corrective actions at facilities where nuclear-related operations were conducted in Nevada. Among the most significant sites being addressed are the locations of underground nuclear tests on the Nevada National Security Site (NNSS). The process for implementing corrective actions for the Underground Test Area (UGTA) locations is defined in Appendix VI of a Federal Facility Agreement and Consent Order (1996, as amended). In broad terms, Appendix VI describes a Corrective Action Investigation followed by a Corrective Action Decision, and implementation of a Corrective Action Plan prior to closure. The Frenchman Flat Corrective Action Unit (CAU) is farthest along in the UGTA corrective action process. It includes ten underground tests within the Frenchman Flat topographic basin, in the southeastern portion of the NNSS. Data have been collected from drilling exploration, hydrologic testing, and field and laboratory studies. Modeling has been completed at a variety of scales and focusing on a variety of flow and transport aspects ranging from regional boundary conditions to process dynamics within a single nuclear cavity. The culmination of the investigations is a transport model for the Frenchman Flat CAU (Stoller Navarro Joint Venture, 2009) that has undergone rigorous peer review and been accepted by the State of Nevada, setting the stage for the Corrective Action Decision and progression from the investigation phase to the corrective action phase of the project.

Chapman Jenny,Pohlmann Karl

2011-02-01T23:59:59.000Z

468

Analysis of offsite emergency planning zones for the Rocky Flats Plant. Evaluation of radiological materials, Volume 1  

SciTech Connect

The objective of this report is to fully document technical data and information that have been developed to support offsite emergency planning by the State of Colorado for potential accidents at the Rocky Flats Plant. Specifically, this report documents information and data that will assist the State of Colorado in upgrading its radiological emergency planning zones for Rocky Flats Plant. The Colorado Division of Disaster Emergency Services (DODES) and the Colorado Department of Health (CDH) represent the primary audience for this report. The secondary audience for this document includes the Rocky Flats Plant; federal, State, and local governmental agencies; the scientific community; and the interested public. Because the primary audience has a pre-existing background on the subject, this report assumes some exposure to emergency planning, health physics, and dispersion modeling on the part of the reader. The authors have limited their assumptions of background knowledge as much as possible, recognizing that the topics addressed in the report may be new to some secondary audiences.

Hodgin, C.R.; Daugherty, N.M.; Smith, M.L. [EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant; Bunch, D.; Toresdahl, J.; Verholek, M.G. [TENERA, L.P., Knoxville, TN (United States)

1991-01-01T23:59:59.000Z

469

Heel effect adaptive flat field correction of digital x-ray detectors  

SciTech Connect

Purpose: Anode heel effect renders large-scale background nonuniformities in digital radiographs. Conventional offset/gain calibration is performed at mono source-to-image distance (SID), and disregards the SID-dependent characteristic of heel effect. It results in a residual nonuniform background in the corrected radiographs when the SID settings for calibration and correction differ. In this work, the authors develop a robust and efficient computational method for digital x-ray detector gain correction adapted to SID-variant heel effect, without resorting to physical filters, phantoms, complicated heel effect models, or multiple-SID calibration and interpolation.Methods: The authors present the Duo-SID projection correction method. In our approach, conventional offset/gain calibrations are performed only twice, at the minimum and maximum SIDs of the system in typical clinical use. A fast iterative separation algorithm is devised to extract the detector gain and basis heel patterns from the min/max SID calibrations. The resultant detector gain is independent of SID, while the basis heel patterns are parameterized by the min- and max-SID. The heel pattern at any SID is obtained from the min-SID basis heel pattern via projection imaging principles. The system gain desired at a specific acquisition SID is then constructed using the projected heel pattern and detector gain map.Results: The method was evaluated for flat field and anatomical phantom image corrections. It demonstrated promising improvements over interpolation and conventional gain calibration/correction methods, lowering their correction errors by approximately 70% and 80%, respectively. The separation algorithm was able to extract the detector gain and heel patterns with less than 2% error, and the Duo-SID corrected images showed perceptually appealing uniform background across the detector.Conclusions: The Duo-SID correction method has substantially improved on conventional offset/gain corrections for digital x-ray imaging in an SID-variant environment. The technique is relatively simple, and can be easily incorporated into multiple-point gain calibration/correction techniques. It offers a potentially valuable tool for preprocessing digital x-ray images to boost image quality of mammography, chest and cardiac radiography, as well as automated computer aided diagnostic radiology.

Yu, Yongjian [X-ray Products, Varian Medical Systems Inc., Liverpool, New York 13088 (United States)] [X-ray Products, Varian Medical Systems Inc., Liverpool, New York 13088 (United States); Wang, Jue [Department of Mathematics, Union College, Schenectady, New York 12308 (United States)] [Department of Mathematics, Union College, Schenectady, New York 12308 (United States)

2013-08-15T23:59:59.000Z

470

A forward bias method for lag correction of an a-Si flat panel detector  

SciTech Connect

Purpose: Digital a-Si flat panel (FP) x-ray detectors can exhibit detector lag, or residual signal, of several percent that can cause ghosting in projection images or severe shading artifacts, known as the radar artifact, in cone-beam computed tomography (CBCT) reconstructions. A major contributor to detector lag is believed to be defect states, or traps, in the a-Si layer of the FP. Software methods to characterize and correct for the detector lag exist, but they may make assumptions such as system linearity and time invariance, which may not be true. The purpose of this work is to investigate a new hardware based method to reduce lag in an a-Si FP and to evaluate its effectiveness at removing shading artifacts in CBCT reconstructions. The feasibility of a novel, partially hardware based solution is also examined. Methods: The proposed hardware solution for lag reduction requires only a minor change to the FP. For pulsed irradiation, the proposed method inserts a new operation step between the readout and data collection stages. During this new stage the photodiode is operated in a forward bias mode, which fills the defect states with charge. A Varian 4030CB panel was modified to allow for operation in the forward bias mode. The contrast of residual lag ghosts was measured for lag frames 2 and 100 after irradiation ceased for standard and forward bias modes. Detector step response, lag, SNR, modulation transfer function (MTF), and detective quantum efficiency (DQE) measurements were made with standard and forward bias firmware. CBCT data of pelvic and head phantoms were also collected. Results: Overall, the 2nd and 100th detector lag frame residual signals were reduced 70%-88% using the new method. SNR, MTF, and DQE measurements show a small decrease in collected signal and a small increase in noise. The forward bias hardware successfully reduced the radar artifact in the CBCT reconstruction of the pelvic and head phantoms by 48%-81%. Conclusions: Overall, the forward bias method has been found to greatly reduce detector lag ghosts in projection data and the radar artifact in CBCT reconstructions. The method is limited to improvements of the a-Si photodiode response only. A future hybrid mode may overcome any limitations of this method.

Starman, Jared; Tognina, Carlo; Partain, Larry; Fahrig, Rebecca [Department of Electrical Engineering, Stanford University, Stanford, California 94305 (United States) and Department of Radiology, Stanford University, Stanford, California 94305 (United States); Varian Medical Systems, Palo Alto, California 94304 (United States); Department of Radiology, Stanford University, Stanford, California 94305 (United States)

2012-01-15T23:59:59.000Z

471

CLEANING OF VISCOUS DROPS ON A FLAT INCLINED SURFACE USING GRAVITY-DRIVEN FILM FLOWS  

E-Print Network (OSTI)

roughness, or some solid particles or micro bubbles stuck on the surface. In figure 4(a), we can see that the impact of the obstacle on the streamwise velocity is very limited upstream, but spreads laterally due to the formation of stationary capillary... 18, 052104. Cerro, R. L. and Whitaker, S. (1971a) Stability of falling liquid films, Chem. Eng. Sc. 26, 742-745. Cerro, R. L. and Whitaker, S. (1971b) Entrance region flows with a free surface: the falling liquid film, Chem. Eng. Sc. 26, 785...

Landel, Julien R.; McEvoy, Harry; Dalziel, Stuart B.

2014-10-07T23:59:59.000Z

472

DOE/EIS-0183: Record of Decision for the Electrical Interconnection of the Shepherds Flat Wind Energy Project (07/18/08)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Shepherds Flat Wind Energy Project Shepherds Flat Wind Energy Project July 2008 B o n n e v i l l e P o w e r A d m i n i s t r a t i o n 1 INTRODUCTI