Powered by Deep Web Technologies
Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Polyethylene composites containing a phase change material having a C14 straight chain hydrocarbon  

DOE Patents (OSTI)

A composite useful in thermal energy storage, said composite being formed of a polyethylene matrix having a straight chain alkyl hydrocarbon incorporated therein, said polyethylene being crosslinked to such a degree that said polyethylene matrix is form stable and said polyethylene matrix is capable of absorbing at least 10% by weight of said straight chain alkyl hydrocarbon; the composite is useful in forming pellets or sheets having thermal energy storage characteristics.

Salyer, Ival O. (Dayton, OH)

1987-01-01T23:59:59.000Z

2

Langmuir Monolayers of Straight-Chain and Branched Hexadecanol and Eicosanol Mixtures  

Science Conference Proceedings (OSTI)

Langmuir monolayers of straight-chain and branched hexadecanol and eicosanol mixtures were previously studied using surface pressure-area isotherms, Brewster angle microscopy, and interfacial rheology. In this paper, we investigate the structure of these fatty alcohol mixtures using these previous results together with X-ray diffraction and reflectivity measurements, which provide a better understanding of the structure of the monolayer in terms of the phase segregation and location of branched chains. For eicosanol below 25 mN/m, the branched chains are incorporated into the monolayer, yet they are phase-separated from the straight chains. At higher surface pressures, the branched chains are expelled from the monolayer and presumably form micelles or some other aggregate in the subphase. In contrast, the hexadecanol branched chains are not present in the monolayer at any surface pressure. These behaviors are interpreted with the help of the X-ray measurements and density profiles, and are explained in terms of straight-chain flexibility. We will discuss the effect of the monolayer structure on the surface shear viscosity. These studies provide a deeper understanding of the structure and behavior of amphiphilic mixtures, and will ultimately aid in developing models for lipids, micelle formation, and other important biological functions.

Kurtz, R.E.; Toney, M.F.; Pople, J.A.; Lin, B.; Meron, M.; Majewski, J.; Lange, A.; Fuller, G.G. (Stanford); (BASF SE); (SSRL); (CARS); (LANL)

2009-01-06T23:59:59.000Z

3

Langmuir Monolayers of Straight-Chain And Branched Hexadecanol And Eicosanol Mixtures  

Science Conference Proceedings (OSTI)

Langmuir monolayers of straight-chain and branched hexadecanol and eicosanol mixtures were previously studied using surface pressure-area isotherms, Brewster angle microscopy, and interfacial rheology. In this paper, we investigate the structure of these fatty alcohol mixtures using these previous results together with X-ray diffraction and reflectivity measurements, which provide a better understanding of the structure of the monolayer in terms of the phase segregation and location of branched chains. For eicosanol below 25 mN/m, the branched chains are incorporated into the monolayer, yet they are phase-separated from the straight chains. At higher surface pressures, the branched chains are expelled from the monolayer and presumably form micelles or some other aggregate in the subphase. In contrast, the hexadecanol branched chains are not present in the monolayer at any surface pressure. These behaviors are interpreted with the help of the X-ray measurements and density profiles, and are explained in terms of straight-chain flexibility. We will discuss the effect of the monolayer structure on the surface shear viscosity. These studies provide a deeper understanding of the structure and behavior of amphiphilic mixtures, and will ultimately aid in developing models for lipids, micelle formation, and other important biological functions.

Kurtz, R.E.; Toney, M.F.; Pople, J.A.; Lin, B.; Meron, M.; Majewski, J.; Lange, A.; Fuller, G.G.

2009-05-20T23:59:59.000Z

4

NGPL Production, Gaseous Equivalent  

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

NGPL Production, Gaseous Equivalent Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes Show Data By:...

5

Gaseous Fuel Injection Modeling using a Gaseous Sphere Injection Methodology  

DOE Green Energy (OSTI)

The growing interest in gaseous fuels (hydrogen and natural gas) for internal combustion engines calls for the development of computer models for simulation of gaseous fuel injection, air entrainment and the ensuing combustion. This paper introduces a new method for modeling the injection and air entrainment processes for gaseous fuels. The model uses a gaseous sphere injection methodology, similar to liquid droplet in injection techniques used for liquid fuel injection. In this paper, the model concept is introduced and model results are compared with correctly- and under-expanded experimental data.

Hessel, R P; Aceves, S M; Flowers, D L

2006-03-06T23:59:59.000Z

6

GASEOUS SCINTILLATION COUNTER  

DOE Patents (OSTI)

A gaseous excitation counter for detecting the presence amd measuring the energy of subatomic particles and electromagnetic radiation is described. The counter includes a gas-tight chamber filled with an elemental gas capable of producing ultra-violet excitation quanta when irradiated with subatomic particles and electromagnetic radiation. The gas has less than one in a thousand parts ultra-violet absorbing contamination. When nuclear radiation ps present the ultra-violet light produced by the gas strikes a fluorescent material within the counter, responsive to produce visible excitation quanta, and photo-sensitive counting means detect the visible emission.

Eggler, C.; Huddleston, C.M.

1959-04-28T23:59:59.000Z

7

Independent Oversight Inspection, Portsmouth Gaseous Diffusion Plant -  

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

Portsmouth Gaseous Diffusion Portsmouth Gaseous Diffusion Plant - November 2006 Independent Oversight Inspection, Portsmouth Gaseous Diffusion Plant - November 2006 November 2006 Inspection of Emergency Management at the Portsmouth Gaseous Diffusion Plant The Secretary of Energy's Office of Independent Oversight, within the Office of Security and Safety Performance Assurance, conducted an inspection of the emergency management program at the Portsmouth Gaseous Diffusion Plant (PORTS) in August and September 2006. The coordination of emergency plans and procedures among USEC and DOE contractor organizations has successfully integrated the emergency management programs into a single cohesive program for the PORTS site. Other strengths include accurate hazards surveys that identify applicable

8

Gaseous electrode development. Final report  

DOE Green Energy (OSTI)

The purpose of the present study is to optimize the gaseous electrode for use in an MHD generator and to test this optimum configuration in an operating MHD channel. The arc gaseous electrode concept is based on the use of an arc source in the body of the MHD channel electrode, wherein the arc follows a helical path and generates a plasma which flows out of a long, thin slot cut parallel to the cylindrical annulus, to provide a low impedance path for the MHD current through the boundary layer so that electrode erosion due to arcing can be reduced. Bench-scale tests on the arc plasma source were conducted. The effect of the parameters such as magnetic field, yaw angle with respect to the magnetic field, electrode geometry, and arc cathode materials were studied. Based on these studies, an optimum design was selected for testing in the MHD channel. Tests were conducted with the arc gaseous electrode in the cathode wall of a diagonal conducting wall MHD generator at magnetic fields up to 3.83 Tesla, with a supersonic flow of combustion products seeded with 1.0 w/o of potassium. The measured MHD plasma conductivity varied between 12 and 22 S/m. Results are presented and discussed in detail. (WHK)

Jones, M.S. Jr.; Scannell, E.P.; Sathyanarayana, K.; Thiagarajan, V.; Mallavarpu, R.; Armstrong, A.J.

1979-12-01T23:59:59.000Z

9

Hydrogen and Gaseous Fuel Safety and Toxicity  

DOE Green Energy (OSTI)

Non-traditional motor fuels are receiving increased attention and use. This paper examines the safety of three alternative gaseous fuels plus gasoline and the advantages and disadvantages of each. The gaseous fuels are hydrogen, methane (natural gas), and propane. Qualitatively, the overall risks of the four fuels should be close. Gasoline is the most toxic. For small leaks, hydrogen has the highest ignition probability and the gaseous fuels have the highest risk of a burning jet or cloud.

Lee C. Cadwallader; J. Sephen Herring

2007-06-01T23:59:59.000Z

10

Portsmouth Gaseous Diffusion Plant, Former Production Workers...  

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

Plant, Former Production Workers Screening Projects Portsmouth Gaseous Diffusion Plant, Former Production Workers Screening Projects Project Name: Worker Health Protection Program...

11

Portsmouth Gaseous Diffusion Plant - Enforcement Documents  

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

Inc. related to Installation and Inspection of Penetration Fire Seals at the DUF6 Conversion Building at the Portsmouth Gaseous Diffusion Plant, March 26, 2010 Consent...

12

Independent Oversight Review, Portsmouth Gaseous Diffusion Plant -  

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

Portsmouth Gaseous Diffusion Plant Portsmouth Gaseous Diffusion Plant - November 2013 Independent Oversight Review, Portsmouth Gaseous Diffusion Plant - November 2013 November 5, 2013 Review of Preparedness for Severe Natural Phenomena Events at the Portsmouth Gaseous Diffusion Plant This report documents the results of an independent oversight review of the preparedness of the DOE Portsmouth/Paducah Project Office, contractors at the DOE Portsmouth Gaseous Diffusion Plant, and selected non-leased facilities to respond to a severe natural phenomena event (NPE). The review was conducted in July and August 2013 by the U.S. Department of Energy's (DOE) Office of Safety and Emergency Management Evaluations, which is within the DOE Office of Health, Safety and Security (HSS). The HSS Office of Safety and Emergency Management Evaluations performed this

13

Process for exchanging hydrogen isotopes between gaseous hydrogen and water  

DOE Patents (OSTI)

A process for exchanging isotopes of hydrogen, particularly tritium, between gaseous hydrogen and water is provided whereby gaseous hydrogen depeleted in tritium and liquid or gaseous water containing tritium are reacted in the presence of a metallic catalyst.

Hindin, Saul G. (Mendham, NJ); Roberts, George W. (Westfield, NJ)

1980-08-12T23:59:59.000Z

14

Illinois Natural Gas Plant Liquids Production, Gaseous Equivalent...  

Gasoline and Diesel Fuel Update (EIA)

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Illinois Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2...

15

Oklahoma Natural Gas Plant Liquids Production, Gaseous Equivalent...  

Gasoline and Diesel Fuel Update (EIA)

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Oklahoma Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2...

16

Tennessee Natural Gas Plant Liquids Production, Gaseous Equivalent...  

Gasoline and Diesel Fuel Update (EIA)

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Tennessee Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2...

17

Florida Natural Gas Plant Liquids Production, Gaseous Equivalent...  

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

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Florida Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3...

18

Ohio Natural Gas Plant Liquids Production, Gaseous Equivalent...  

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

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Ohio Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3...

19

Wyoming Natural Gas Plant Liquids Production, Gaseous Equivalent...  

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

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Wyoming Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3...

20

Montana Natural Gas Plant Liquids Production, Gaseous Equivalent...  

Gasoline and Diesel Fuel Update (EIA)

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Montana Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3...

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Nebraska Natural Gas Plant Liquids Production, Gaseous Equivalent...  

Annual Energy Outlook 2012 (EIA)

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Nebraska Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2...

22

Utah Natural Gas Plant Liquids Production, Gaseous Equivalent...  

Gasoline and Diesel Fuel Update (EIA)

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Utah Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3...

23

Indiana Natural Gas Plant Liquids Production, Gaseous Equivalent...  

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

Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Indiana Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2...

24

Alaska Natural Gas Plant Liquids Production, Gaseous Equivalent...  

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

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Alaska Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3...

25

West Virginia Natural Gas Plant Liquids Production, Gaseous Equivalent...  

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

Liquids Production, Gaseous Equivalent (Million Cubic Feet) West Virginia Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2...

26

Kansas Natural Gas Plant Liquids Production, Gaseous Equivalent...  

Gasoline and Diesel Fuel Update (EIA)

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Kansas Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3...

27

Non-Destructive Analysis Calibration Standards for Gaseous Diffusion...  

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

Analysis Calibration Standards for Gaseous Diffusion Plant (GDP) Decommissioning The decommissioning of Gaseous Diffusion Plant facilities requires accurate, non-destructive...

28

Production and Handling Slide 25: The Portsmouth Gaseous Diffusion...  

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

Portsmouth Gaseous Diffusion Plant Skip Presentation Navigation First Slide Previous Slide Next Slide Last Presentation Table of Contents The Portsmouth Gaseous Diffusion Plant...

29

Production and Handling Slide 24: The Paducah Gaseous Diffusion...  

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

Paducah Gaseous Diffusion Site Skip Presentation Navigation First Slide Previous Slide Next Slide Last Presentation Table of Contents The Paducah Gaseous Diffusion Site Refer to...

30

Combination free electron and gaseous laser  

DOE Patents (OSTI)

A multiple laser having one or more gaseous laser stages and one or more free electron stages. Each of the free electron laser stages is sequentially pumped by a microwave linear accelerator. Subsequently, the electron beam is directed through a gaseous laser, in the preferred embodiment, and in an alternative embodiment, through a microwave accelerator to lower the energy level of the electron beam to pump one or more gaseous lasers. The combination laser provides high pulse repetition frequencies, on the order of 1 kHz or greater, high power capability, high efficiency, and tunability in the synchronous production of multiple beams of coherent optical radiation.

Brau, Charles A. (Los Alamos, NM); Rockwood, Stephen D. (Los Alamos, NM); Stein, William E. (Los Alamos, NM)

1980-01-01T23:59:59.000Z

31

Manhattan Project: K-25 Gaseous Diffusion Plant  

Office of Scientific and Technical Information (OSTI)

K-25 Gaseous Diffusion Plant, Oak Ridge Events > The Uranium Path to the Bomb, 1942-1944 Events > The Uranium Path to the Bomb, 1942-1944 > Working K-25 into the Mix, Oak Ridge:...

32

Independent Oversight Review, Portsmouth Gaseous Diffusion Plant- January 2013  

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

Review of the Portsmouth Gaseous Diffusion Plant Work Planning and Control Activities Prior to Work Execution

33

Gaseous insulators for high voltage electrical equipment  

DOE Patents (OSTI)

Gaseous insulators comprise compounds having high attachment cross sections for electrons having energies in the 0-1.3 electron volt range. Multi-component gaseous insulators comprise compounds and mixtures having overall high electron attachment cross sections in the 0-1.3 electron volt range and moderating gases having high cross sections for inelastic interactions with electrons of energies 1-4 electron volts. Suitable electron attachment components include hexafluorobutyne, perfluorobutene-2, perfluorocyclobutane, perfluorodimethylcyclobutane, perfluorocyclohexene, perfluoromethylcyclohexane, hexafluorobutadiene, perfluoroheptene-1 and hexafluoroazomethane. Suitable moderating gases include N.sub.2, CO, CO.sub.2 and H.sub.2. The gaseous insulating mixture can also contain SF.sub.6, perfluoropropane and perfluorobenzene.

Christophorou, Loucas G. (Oak Ridge, TN); James, David R. (Knoxville, TN); Pace, Marshall O. (Knoxville, TN); Pai, Robert Y. (Concord, TN)

1981-01-01T23:59:59.000Z

34

Gaseous insulators for high voltage electrical equipment  

DOE Patents (OSTI)

Gaseous insulators comprise compounds having high attachment cross sections for electrons having energies in the 0-1.3 electron volt range. Multi-component gaseous insulators comprise compounds and mixtures having overall high electron attachment cross sections in the 0-1.3 electron volt range and moderating gases having high cross sections for inelastic interactions with electrons of energies 1-4 electron volts. Suitable electron attachment components include hexafluorobutyne, perfluorobutene-2, perfluorocyclobutane, perfluorodimethylcyclobutane, perfluorocyclohexene, perfluoromethylcyclohexane, hexafluorobutadiene, perfluoroheptene-1 and hexafluoroazomethane. Suitable moderating gases include N.sub.2, CO, CO.sub.2 and H.sub.2. The gaseous insulating mixture can also contain SF.sub.6, perfluoropropane and perfluorobenzene.

Christophorou, Loucas G. (Oak Ridge, TN); James, David R. (Knoxville, TN); Pace, Marshall O. (Knoxville, TN); Pai, Robert Y. (Concord, TN)

1979-01-01T23:59:59.000Z

35

Independent Activity Report, Portsmouth Gaseous Diffusion Plant - July 2011  

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

Activity Report, Portsmouth Gaseous Diffusion Plant - Activity Report, Portsmouth Gaseous Diffusion Plant - July 2011 Independent Activity Report, Portsmouth Gaseous Diffusion Plant - July 2011 July 2011 Orientation Visit to the Portsmouth Gaseous Diffusion Plant [HIAR-PAD-2011-07-27] The purpose of the visit was to discuss the nuclear safety oversight strategy, describe the site lead program, increase HSS personnel's operational awareness of the site's activities, and to determine how HSS can carry out its independent oversight and mission support responsibilities. Independent Activity Report, Portsmouth Gaseous Diffusion Plant - July 2011 More Documents & Publications Independent Activity Report, Portsmouth Gaseous Diffusion Plant - August 2011 Independent Activity Report, Argonne National Laboratory - August 2011

36

Independent Oversight Review, Portsmouth Gaseous Diffusion Plant- April 2013  

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

Review of the Integrated Safety Management System Phase I Verification Review at the Portsmouth Gaseous Diffusion Plant

37

Gaseous modification of MCrAlY coatings  

SciTech Connect

The present invention generally describes methods for modifying MCrAlY coatings by using gaseous carburization, gaseous nitriding or gaseous carbonitriding. The modified MCrAlY coatings are useful in thermal barrier coating systems, which may be used in gas turbine engines.

Vance, Steven J. (Orlando, FL); Goedjen, John G. (Oviedo, FL); Sabol, Stephen M. (Orlando, FL); Sloan, Kelly M. (Longwood, FL)

2000-01-01T23:59:59.000Z

38

Non-Destructive Analysis Calibration Standards for Gaseous Diffusion Plant  

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

Non-Destructive Analysis Calibration Standards for Gaseous Non-Destructive Analysis Calibration Standards for Gaseous Diffusion Plant (GDP) Decommissioning Non-Destructive Analysis Calibration Standards for Gaseous Diffusion Plant (GDP) Decommissioning The decommissioning of Gaseous Diffusion Plant facilities requires accurate, non-destructive assay (NDA) of residual enriched uranium in facility components for safeguards and nuclear criticality safety purposes. Current practices used to perform NDA measurements frequently have poorly defined uncertainties due to multiple factors. Working reference material (WRM) standards and container-specific surrogates are required to verify and validate NDA methods used to support characterization of gaseous diffusion equipment within the D&D project. Because working reference

39

Gaseous Diffusion Plant Production Workers Needs Assessment  

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

Department of Energy Gaseous Diffusion Plants Department of Energy Gaseous Diffusion Plants Phase I: Needs Assessment Robert Wages Oil, Chemical and Atomic Inte national Union Steven Markowitz Mount Sinai School of Medicine Sylvia Kieding Oil, Chemical and Atomic International Union Mark Griffon University of Massachusetts Lowell Elizabeth Averill Samaras Alice Hamilton College October 1, 1997 TABLE OF CONTENTS Page Number Executive Summary 1 J: OVERVIEW 1. Introduction 2-3 2. Methods 3-8 3. Principal Findings 9-16 4. Need for Medical Surveillance and Risk Communication 16-17 PART II: METHODOLOGY AND RESULTS 4. Exposure Assessment Appendix A Appendix B Appendix C 5. Focus Group Results Appendix A Appendix B Appendix C 6. Epidemiology and Other Health Studies EXECUTIVE SUMMARY Purpose We report the results and analysis of a one year needs assessment study evaluating

40

Alternative gaseous-fuels safety assessment  

DOE Green Energy (OSTI)

A relative safety assessment of alternative gaseous and reference liquid fuels utilized for light automotive transportation in the public sector was completed. The specific fuels considered were compressed natural gas (CNG), liquefied natural gas (LNG), liquefied petroleum gas (LPG), and the liquid fuels, gasoline and diesel. The assessment methodology describes and develops the relative hazards of these fuels from an integrated generic physicochemical property and accident scenario point of view. A technique involving a method of eliciting expert judgment combined with a comparative scoring methodology was applied in establishing fuel relative safety rankings. Limitations of this type of assessment are discussed. Selected accident scenarios included fuel leakage in both residential and public garages; fueling line rupture at a refueling station in the presence of user vehicles or delivery vehicles; and vehicle collisions under rural, urban, and vehicular tunnel conditions. Overall, the results obtained demonstrate dependency upon the specific application or scenario. Gaseous fuels have increased relative risks in certain situations and are relatively safe in others. The results suggest that alternative gaseous fuels are not disqualified for public usage. The assessment also provides rationale for the development of selected safe handling criteria and recommendations.

Krupka, M.C.; Peaslee, A.T. Jr.; Laquer, H.L.

1983-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Band Formation during Gaseous Diffusion in Aerogels  

E-Print Network (OSTI)

We study experimentally how gaseous HCl and NH_3 diffuse from opposite sides of and react in silica aerogel rods with porosity of 92 % and average pore size of about 50 nm. The reaction leads to solid NH_4Cl, which is deposited in thin sheet-like structures. We present a numerical study of the phenomenon. Due to the difference in boundary conditions between this system and those usually studied, we find the sheet-like structures in the aerogel to differ significantly from older studies. The influence of random nucleation centers and inhomogeneities in the aerogel is studied numerically.

M. A. Einarsrud; F. A. Maao; A. Hansen; M. Kirkedelen; J. Samseth

1997-06-18T23:59:59.000Z

42

K-25 Gaseous Diffusion Process Building | Department of Energy  

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

Operational Management » History » Manhattan Project » Signature Operational Management » History » Manhattan Project » Signature Facilities » K-25 Gaseous Diffusion Process Building K-25 Gaseous Diffusion Process Building K-25 Gaseous Diffusion Process Building The K-25 plant, located on the southwestern end of the Oak Ridge reservation, used the gaseous diffusion method to separate uranium-235 from uranium-238. Based on the well-known principle that molecules of a lighter isotope would pass through a porous barrier more readily than molecules of a heavier one, gaseous diffusion produced through myriads of repetitions a gas increasingly rich in uranium-235 as the heavier uranium-238 was separated out in a system of cascades. Although producing minute amounts of final product measured in grams, gaseous diffusion required a massive

43

Orientation Visit to the Paducah Gaseous Diffusion Plant  

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

PAD-2011-07-27 Site: Paducah Gaseous Diffusion Plant Subject: Office of Enforcement and Oversight's Office of Safety and Emergency Management Evaluations Activity Report for the...

44

,"North Dakota Natural Gas Plant Liquids Production, Gaseous...  

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

Of Series","Frequency","Latest Data for" ,"Data 1","North Dakota Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2012 ,"Release...

45

,"Tennessee Natural Gas Plant Liquids Production, Gaseous Equivalent...  

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

Of Series","Frequency","Latest Data for" ,"Data 1","Tennessee Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet)",1,"Annual",2012...

46

,"U.S. Natural Gas Plant Liquids Production, Gaseous Equivalent...  

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

Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","U.S. Natural Gas Plant Liquids Production, Gaseous Equivalent (Bcf)",1,"Monthly","92013" ,"Release...

47

,"New Mexico Natural Gas Plant Liquids Production, Gaseous Equivalent...  

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

Of Series","Frequency","Latest Data for" ,"Data 1","New Mexico Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2012 ,"Release...

48

,"Arkansas Natural Gas Plant Liquids Production, Gaseous Equivalent...  

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

Of Series","Frequency","Latest Data for" ,"Data 1","Arkansas Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2012 ,"Release...

49

,"Colorado Natural Gas Plant Liquids Production, Gaseous Equivalent...  

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

Of Series","Frequency","Latest Data for" ,"Data 1","Colorado Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2012 ,"Release...

50

,"Kentucky Natural Gas Plant Liquids Production, Gaseous Equivalent...  

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

Of Series","Frequency","Latest Data for" ,"Data 1","Kentucky Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2012 ,"Release...

51

,"West Virginia Natural Gas Plant Liquids Production, Gaseous...  

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

Of Series","Frequency","Latest Data for" ,"Data 1","West Virginia Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2012 ,"Release...

52

Former Worker Medical Screening Program - Paducah Gaseous Diffusion...  

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

Paducah Gaseous Diffusion Plant Construction Workers Former Worker Medical Screening Program (FWP) Project Name: Building Trades National Medical Screening Program Covered DOE...

53

The Thermodynamics of Gaseous, Cuprous Chloride Monomer and Trimer  

E-Print Network (OSTI)

No.W-7405-eng~48B TIiE THERMODYNAMICS OF GASEOUS" CUPROUSCu(s) + HCl::= I Thermodynamics of Vaporization to Monomeric

Brewer, Leo

2010-01-01T23:59:59.000Z

54

Virtual Screening of Materials for Gaseous Fuel Storage  

Science Conference Proceedings (OSTI)

Presentation Title, Virtual Screening of Materials for Gaseous Fuel Storage .... Numerical Study on Behavior of Top-Blown Supersonic Jets and Their Interaction ...

55

2011 GASEOUS IONS GORDON RESEARCH CONFERENCE  

DOE Green Energy (OSTI)

The Gaseous Ions: Structures, Energetics and Reactions Gordon Research Conference will focus on ions and their interactions with molecules, surfaces, electrons, and light. The conference will cover theory and experiments, and systems ranging from molecular to biological to clusters to materials. The meeting goal continues to be bringing together scientists interested in fundamentals, with those applying fundamental phenomena to a wide range of practical problems. Each of the ten conference sessions will focus on a topic within this spectrum, and there will also be poster sessions for contributed papers, with sufficient space and time to allow all participants to present their latest results. To encourage active participation by young investigators, about ten of the poster abstracts will be selected for 15 minute 'hot topic' talks during the conference sessions. Hot topic selection will be done about a month before the meeting. Funds should be available to offset the participation cost for young investigators.

Scott Anderson

2011-03-04T23:59:59.000Z

56

2011 GASEOUS IONS GORDON RESEARCH CONFERENCE  

SciTech Connect

The Gaseous Ions: Structures, Energetics and Reactions Gordon Research Conference will focus on ions and their interactions with molecules, surfaces, electrons, and light. The conference will cover theory and experiments, and systems ranging from molecular to biological to clusters to materials. The meeting goal continues to be bringing together scientists interested in fundamentals, with those applying fundamental phenomena to a wide range of practical problems. Each of the ten conference sessions will focus on a topic within this spectrum, and there will also be poster sessions for contributed papers, with sufficient space and time to allow all participants to present their latest results. To encourage active participation by young investigators, about ten of the poster abstracts will be selected for 15 minute 'hot topic' talks during the conference sessions. Hot topic selection will be done about a month before the meeting. Funds should be available to offset the participation cost for young investigators.

Scott Anderson

2011-03-04T23:59:59.000Z

57

Gaseous-fuel safety assessment. Status report  

DOE Green Energy (OSTI)

The Los Alamos National Laboratory, in support of studies sponsored by the Office of Vehicle and Engine Research and Development in the US Department of Energy, has undertaken a safety assessment of selected gaseous fuels for use in light automotive transportation. The purpose is to put into perspective the hazards of these fuels relative to present day fuels and delineated criteria for their safe handling. Fuels include compressed and liquified natural gas (CNG and LNG), liquefied petroleum gas (LPG), and for reference gasoline and diesel. This paper is a program status report. To date, physicochemical property data and general petroleum and transportation information were compiled; basic hazards defined; alternative fuels were safety-ranked based on technical properties alone; safety data and vehicle accident statistics reviewed; and accident scenarios selected for further analysis. Methodology for such analysis is presently under consideration.

Krupka, M.C.; Edeskuty, F.J.; Bartlit, J.R.; Williamson, K.D. Jr.

1982-01-01T23:59:59.000Z

58

DOE - Office of Legacy Management -- Portsmouth Gaseous Diffusion Plant -  

Office of Legacy Management (LM)

Portsmouth Gaseous Diffusion Plant Portsmouth Gaseous Diffusion Plant - 026 FUSRAP Considered Sites Site: Portsmouth Gaseous Diffusion Plant (026 ) Designated Name: Alternate Name: Location: Evaluation Year: Site Operations: Site Disposition: Radioactive Materials Handled: Primary Radioactive Materials Handled: Radiological Survey(s): Site Status: The Portsmouth Gaseous Diffusion Plant (PGDP) is located in south central Ohio, approximately 20 miles north of Portsmouth, Ohio and 70 miles south of Columbus, Ohio. Construction of the PGDP began in late 1952 to expand the Federal Government¿s gaseous diffusion program already in place at Oak Ridge, Tennessee and Paducah, Kentucky. The facility was built to increase the production of enriched uranium at rates substantially above the other

59

Enforcement Documents - Portsmouth Gaseous Diffusion Plant | Department of  

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

Portsmouth Gaseous Diffusion Plant Portsmouth Gaseous Diffusion Plant Enforcement Documents - Portsmouth Gaseous Diffusion Plant March 26, 2010 Enforcement Letter, Intennech, Inc. - March 26, 2010 Enforcement Letter issued to Intermech, Inc. related to Installation and Inspection of Anchor Bolts and Pipe Supports at the DUF6 Conversion Buildings at the Portsmouth and Paducah Gaseous Diffusion Plants March 26, 2010 Enforcement Letter, Geiger Brothers Mechanical Contractors, INC - March 26, 2010 Enforcement Letter issued to Geiger Brothers Mechanical Contractors, Inc. related to Installation and Inspection of Penetration Fire Seals at the DUF6 Conversion Building at the Portsmouth Gaseous Diffusion Plant March 26, 2010 Consent Order, Uranium Disposition Services, LLC - NCO-2010-01 Consent Order issued to Uranium Disposition Services, LLC related to

60

Orientation Visit to the Paducah Gaseous Diffusion Plant, July 2011 |  

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

Orientation Visit to the Paducah Gaseous Diffusion Plant, July 2011 Orientation Visit to the Paducah Gaseous Diffusion Plant, July 2011 Orientation Visit to the Paducah Gaseous Diffusion Plant, July 2011 The U.S. Department of Energy (DOE) Office of Enforcement and Oversight, within the Office of Health, Safety and Security (HSS), conducted an orientation visit to the DOE Paducah Site Office (PAD) from July 25-27, 2011. The purpose of the visit was to discuss the nuclear safety oversight strategy, describe the site lead program, increase HSS personnel's operational awareness of the site's activities, and to determine how HSS can carry out its independent oversight and mission support responsibilities. Orientation Visit to the Paducah Gaseous Diffusion Plant, July 2011 More Documents & Publications Independent Activity Report, Portsmouth Gaseous Diffusion Plant - August

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Gaseous Emissions From Steamboat Springs, Brady'S Hot Springs, And Desert  

Open Energy Info (EERE)

Gaseous Emissions From Steamboat Springs, Brady'S Hot Springs, And Desert Gaseous Emissions From Steamboat Springs, Brady'S Hot Springs, And Desert Peak Geothermal Systems, Nevada Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Gaseous Emissions From Steamboat Springs, Brady'S Hot Springs, And Desert Peak Geothermal Systems, Nevada Details Activities (3) Areas (3) Regions (0) Abstract: Gaseous emissions from the landscape can be used to explore for geothermal systems, characterize their lateral extent, or map the trends of concealed geologic structures that may provide important reservoir permeability at depth. Gaseous geochemical signatures vary from system to system and utilization of a multi-gas analytical approach to exploration or characterization should enhance the survey's clarity. This paper describes

62

Property:PotentialBiopowerGaseousGeneration | Open Energy Information  

Open Energy Info (EERE)

PotentialBiopowerGaseousGeneration PotentialBiopowerGaseousGeneration Jump to: navigation, search Property Name PotentialBiopowerGaseousGeneration Property Type Quantity Description The estimated potential energy generation from gaseous biopower for a particular place. Use this type to express a quantity of energy. The default unit for energy on OpenEI is the Kilowatt hour (kWh), which is 3,600,000 Joules. http://en.wikipedia.org/wiki/Unit_of_energy It's possible types are Watt hours - 1000 Wh, Watt hour, Watthour Kilowatt hours - 1 kWh, Kilowatt hour, Kilowatthour Megawatt hours - 0.001 MWh, Megawatt hour, Megawatthour Gigawatt hours - 0.000001 GWh, Gigawatt hour, Gigawatthour Joules - 3600000 J, Joules, joules Pages using the property "PotentialBiopowerGaseousGeneration" Showing 25 pages using this property. (previous 25) (next 25)

63

Property:PotentialBiopowerGaseousMass | Open Energy Information  

Open Energy Info (EERE)

PotentialBiopowerGaseousMass PotentialBiopowerGaseousMass Jump to: navigation, search Property Name PotentialBiopowerGaseousMass Property Type Quantity Description The potential mass of gaseous biopower material for a place. Use this type to express a quantity of magnitude, or an object's resistance to acceleration. The default unit is the kilogram (kg). http://en.wikipedia.org/wiki/Kilogram Acceptable units (and their conversions) are: Kilograms - 1 kg, kilo, kilogram, kilograms, Kilogram, kilogramme, kilos Grams - 1000 g, gram, gramme, grams Tonnes - 0.001 tonnes, metric tons, Tonnes, Metric Tonnes Pounds - 2.205 lbs, pounds, pound, Pounds, Lbs Stone - 0.1575 stones, st, stone Ounces - 35.27 ounces, oz, Ounces, ounce BDT - 0.001 BDT, Bone Dry Tonnes, bdt Pages using the property "PotentialBiopowerGaseousMass"

64

Gaseous Detectors: recent developments and applications  

E-Print Network (OSTI)

Since long time, the compelling scientific goals of future high energy physics experiments were a driving factor in the development of advanced detector technologies. A true innovation in detector instrumentation concepts came in 1968, with the development of a fully parallel readout for a large array of sensing elements - the Multiwire Proportional Chamber (MWPC), which earned Georges Charpak a Nobel prize in physics in 1992. Since that time radiation detection and imaging with fast gaseous detectors, capable of economically covering large detection volume with low mass budget, have been playing an important role in many fields of physics. Advances in photo-lithography and micro-processing techniques in the chip industry during the past decade triggered a major transition in the field of gas detectors from wire structures to Micro-Pattern Gas Detector (MPGD) concepts, revolutionizing cell size limitations for many gas detector applications. The high radiation resistance and excellent spatial and time resolution make them an invaluable tool to confront future detector challenges at the next generation of colliders. The design of the new micro-pattern devices appears suitable for industrial production. Novel structures where MPGDs are directly coupled to the CMOS pixel readout represent an exciting field allowing timing and charge measurements as well as precise spatial information in 3D. Originally developed for the high energy physics, MPGD applications has expanded to nuclear physics, UV and visible photon detection, astroparticle and neutrino physics, neutron detection and medical physics.

Maxim Titov

2010-08-23T23:59:59.000Z

65

Property:PotentialBiopowerGaseousCapacity | Open Energy Information  

Open Energy Info (EERE)

PotentialBiopowerGaseousCapacity PotentialBiopowerGaseousCapacity Jump to: navigation, search Property Name PotentialBiopowerGaseousCapacity Property Type Quantity Description The nameplate capacity technical potential from gaseous biopower for a particular place. Use this property to express potential electric energy generation, such as Nameplate Capacity. The default unit is megawatts (MW). For spatial capacity, use property Volume. Acceptable units (and their conversions) are: 1 MW,MWe,megawatt,Megawatt,MegaWatt,MEGAWATT,megawatts,Megawatt,MegaWatts,MEGAWATT,MEGAWATTS 1000 kW,kWe,KW,kilowatt,KiloWatt,KILOWATT,kilowatts,KiloWatts,KILOWATT,KILOWATTS 1000000 W,We,watt,watts,Watt,Watts,WATT,WATTS 1000000000 mW,milliwatt,milliwatts,MILLIWATT,MILLIWATTS 0.001 GW,gigawatt,gigawatts,Gigawatt,Gigawatts,GigaWatt,GigaWatts,GIGAWATT,GIGAWATTS

66

DOE Seeks Deactivation Contractor for Paducah Gaseous Diffusion Plant  

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

Cincinnati The U.S. Department of Energy (DOE) today issued a Request for Task Proposal (RTP) for deactivation activities at the Paducah Gaseous Diffusion Plant (GDP) in Paducah, Kentucky.

67

Pennsylvania Natural Gas Plant Liquids Production, Gaseous Equivalent  

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

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Liquids Production, Gaseous Equivalent (Million Cubic Feet) Pennsylvania Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1960's 121 116 93 1970's 79 55 70 71 75 68 61 45 64 49 1980's 41 29 40 55 61 145 234 318 272 254 1990's 300 395 604 513 513 582 603 734 732 879 2000's 586 691 566 647 634 700 794 859 1,008 1,295 2010's 4,578 8,931 - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Release Date: 12/12/2013 Next Release Date: 1/7/2014 Referring Pages: NGPL Production, Gaseous Equivalent Pennsylvania Natural Gas Plant Processing

68

Energy Department Completes K-25 Gaseous Diffusion Building Demolition |  

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

Energy Department Completes K-25 Gaseous Diffusion Building Energy Department Completes K-25 Gaseous Diffusion Building Demolition Energy Department Completes K-25 Gaseous Diffusion Building Demolition December 19, 2013 - 12:00pm Addthis K-25 Demolition - Oak Ridge 2013 K-25 Demolition - Oak Ridge 2013 Media Contacts Ben Williams, DOE, (865) 574-4912 Wayne McKinney, UCOR, (865) 576-6284 Oak Ridge, Tenn. - Today, the Department of Energy announced that its contractor URS|CH2M Oak Ridge, LLC, or UCOR, has completed demolition of the K-25 gaseous diffusion building, the largest facility in the DOE complex. UCOR took over the project in 2011 and has maintained a strong safety record while completing the demolition over one year ahead of its current schedule and approximately $300 million under the current budget. All debris removal is expected to be completed in spring 2014.

69

Feasibility of gas-phase decontamination of gaseous diffusion equipment  

SciTech Connect

The five buildings at the K-25 Site formerly involved in the gaseous diffusion process contain 5000 gaseous diffusion stages as well as support facilities that are internally contaminated with uranium deposits. The gaseous diffusion facilities located at the Portsmouth Gaseous Diffusion Plant and the Paducah Gaseous Diffusion Plant also contain similar equipment and will eventually close. The decontamination of these facilities will require the most cost-effective technology consistent with the criticality, health physics, industrial hygiene, and environmental concerns; the technology must keep exposures to hazardous substances to levels as low as reasonably achievable (ALARA). This report documents recent laboratory experiments that were conducted to determine the feasibility of gas-phase decontamination of the internal surfaces of the gaseous diffusion equipment that is contaminated with uranium deposits. A gaseous fluorinating agent is used to fluorinate the solid uranium deposits to gaseous uranium hexafluoride (UF{sub 6}), which can be recovered by chemical trapping or freezing. The lab results regarding the feasibility of the gas-phase process are encouraging. These results especially showed promise for a novel decontamination approach called the long-term, low-temperature (LTLT) process. In the LTLT process: The equipment is rendered leak tight, evacuated, leak tested, and pretreated, charged with chlorine trifluoride (ClF{sub 3}) to subatmospheric pressure, left for an extended period, possibly > 4 months, while processing other items. Then the UF{sub 6} and other gases are evacuated. The UF{sub 6} is recovered by chemical trapping. The lab results demonstrated that ClF{sub 3} gas at subatmospheric pressure and at {approx} 75{degree}F is capable of volatilizing heavy deposits of uranyl fluoride from copper metal surfaces sufficiently that the remaining radioactive emissions are below limits.

Munday, E.B.; Simmons, D.W.

1993-02-01T23:59:59.000Z

70

Independent Oversight Review, Portsmouth Gaseous Diffusion Plant - April  

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

April 2013 April 2013 Independent Oversight Review, Portsmouth Gaseous Diffusion Plant - April 2013 April 2013 Review of the Integrated Safety Management System Phase I Verification Review at the Portsmouth Gaseous Diffusion Plant The Office of Enforcement and Oversight (Independent Oversight), within the Office of Health, Safety and Security (HSS), conducted an independent review of the U.S. Department of Energy (DOE) Portsmouth/Paducah Project Office (PPPO). The objective of the Independent Oversight review was to evaluate PPPO's conduct of the Integrated Safety Management System (ISMS) Phase I verification review at the Portsmouth Gaseous Diffusion Plant (PORTS). The contractor at PORTS is Fluor-Babcock & Wilcox Portsmouth (FBP). The HSS Office of Safety and Emergency Management Evaluations

71

Paducah Gaseous Diffusion Plant, Construction Worker Screening Project |  

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

Paducah Gaseous Diffusion Plant, Construction Worker Screening Paducah Gaseous Diffusion Plant, Construction Worker Screening Project Paducah Gaseous Diffusion Plant, Construction Worker Screening Project Project Name: Building Trades National Medical Screening Program Covered DOE Site: Paducah Worker Population Served: Construction Workers Principal Investigator: Knut Ringen, DrPH, MHA, MPH Toll-free Telephone: (888) 464-0009 Local Outreach Office: Joe Hudson 1930 North 13th Street Paducah, KY 42001 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 and/or solvents. The project is being carried out by a large group led by

72

Portsmouth Gaseous Diffusion Plant, Former Production Workers Screening  

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

Portsmouth Gaseous Diffusion Plant, Former Production Workers Portsmouth Gaseous Diffusion Plant, Former Production Workers Screening Projects Portsmouth Gaseous Diffusion Plant, Former Production Workers Screening Projects Project Name: Worker Health Protection Program Covered DOE Site: Portsmouth Worker Population Served: Production Workers Principal Investigator: Jim Frederick Co-Principal Investigator: Steven Markowitz, MD Toll-free Telephone: (888) 241-1199 Local Outreach Office: Jeanne Cisco 2288 Wakefield Mound Road Piketon, OH 45661 Website: http://www.worker-health.org/ This project is conducted by the Unitedsteel Workers in conjunction with Queens College of the City University of New York. The program is being offered as a service to both former and current workers. Free of charge, eligible workers can receive a medical exam, including chest X-ray and

73

Artificial neural network in gaseous emissions prediction with bioreactor usage  

Science Conference Proceedings (OSTI)

The artificial neural network is used more and more often for prediction of processes related with the biowaste management. In this area, composting is one of the most important process of biowaste recycling. However, the gaseous emissions from the composted ... Keywords: composting, data acquisition, emissions, multilayer perceptron, neural modeling, prediction

Piotr Boniecki; Jacek Dach; Krzysztof Pilarski; Aleksander J?dru?; Krzysztof Nowakowski; Hanna Piekarska-Boniecka; Jacek Przyby?

2012-05-01T23:59:59.000Z

74

Methods for deacidizing gaseous mixtures by phase enhanced absorption  

SciTech Connect

An improved process for deacidizing a gaseous mixture using phase enhanced gas-liquid absorption is described. The process utilizes a multiphasic absorbent that absorbs an acid gas at increased rate and leads to reduced overall energy costs for the deacidizing operation.

Hu, Liang

2012-11-27T23:59:59.000Z

75

The real air quality benefits of gaseous-fueled vehicles.  

SciTech Connect

This paper provides a justification for prominent inclusion of currently available gaseous-fueled vehicles (i.e., vehicles powered by propane, sometimes called liquefied petroleum gas [LPG], or natural gas--chiefly, methane--stored onboard the vehicle in gaseous or liquid state but combusted as a gas) in the mix of strategies to (a) reduce public exposure to toxic and fine particulate emissions in the urbanized areas of the developing world and (b) achieve local and regional improvements in ozone air quality. It also presents estimates of associated emission reduction credits into the future. Important considerations discussed are the location of fine particle and toxic emissions in congested urban areas, and the location and timing of ozone precursor emissions, with emphasis on how gaseous-fueled vehicles' role in the relationship among and magnitude of these variables differs from that of their conventionally-fueled counterparts. Efforts to enhance the measurement and quantification of gaseous-fuel benefits are also described.

Saricks, C. L.

2002-03-28T23:59:59.000Z

76

Adaptive high-resolution simulation of realistic gaseous detonation waves  

DOE Green Energy (OSTI)

The numerical approximation of detonation waves in gaseous combustible mixtures is extremely demanding since a wide range of scales needs to be resolved. A dynamically adaptive high-resolution finite volume method is described that has enabled accurately resolved computational investigations of the transient behavior of regularly oscillating detonations in low-pressure hydrogen-oxygen mixtures in realistic two-dimensional geometry.

Deiterding, Ralf [ORNL

2007-01-01T23:59:59.000Z

77

Recent Advances in Laser-based Diagnostics for Gaseous Flows  

Science Conference Proceedings (OSTI)

Laser-based diagnostic techniques offer unique capabilities for experimentation on gaseous flows. In this paper, we overview recent progress of two concepts: spectrally resolved absorption and planar laser-induced fluorescence (PLIF) imaging. The absorption ... Keywords: PLIF, absorption spectroscopy, acetone, combustion control, diode laser, hypersonic, supersonic

R. Hanson; D. Baer; C. Morris; M. Thurber; E. Furlong; S. Wehe

1999-12-01T23:59:59.000Z

78

Estimation of Carbon-14 in Nuclear Power Plant Gaseous Effluents  

Science Conference Proceedings (OSTI)

Nuclear power plants report the amount of radioactivity released through permitted effluent pathways in their plant annual reports. This report provides users with a method for calculating the amount of carbon-14 (14C) generated in a light water reactor (LWR) core and released through plant gaseous effluent pathways.

2010-12-21T23:59:59.000Z

79

Mississippi Natural Gas Plant Liquids Production, Gaseous Equivalent  

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

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Liquids Production, Gaseous Equivalent (Million Cubic Feet) Mississippi Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1960's 1,127 971 1,334 1970's 1,270 1,217 1,058 878 679 567 520 367 485 1,146 1980's 553 830 831 633 618 458 463 437 811 380 1990's 445 511 416 395 425 377 340 300 495 5,462 2000's 11,377 15,454 16,477 11,430 13,697 14,308 14,662 13,097 10,846 18,354 2010's 18,405 11,221 - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Release Date: 12/12/2013 Next Release Date: 1/7/2014 Referring Pages: NGPL Production, Gaseous Equivalent

80

Arkansas Natural Gas Plant Liquids Production, Gaseous Equivalent (Million  

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

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Liquids Production, Gaseous Equivalent (Million Cubic Feet) Arkansas Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1960's 3,499 3,667 3,475 1970's 3,235 2,563 1,197 1,118 952 899 823 674 883 1,308 1980's 1,351 1,327 1,287 1,258 1,200 1,141 1,318 1,275 1,061 849 1990's 800 290 413 507 553 488 479 554 451 431 2000's 377 408 395 320 254 231 212 162 139 168 2010's 213 268 424 - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Release Date: 12/12/2013 Next Release Date: 1/7/2014 Referring Pages: NGPL Production, Gaseous Equivalent

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Gaseous Hydrogen Delivery Breakout - Strategic Directions for Hydrogen Delivery Workshop  

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

Gaseous Hydrogen Gaseous Hydrogen Delivery Breakout Strategic Directions for Hydrogen Delivery Workshop May 7-8, 2003 Crystal City, Virginia Breakout Session Name Targets/Objectives More work is needed to better define delivery target metrics Assumptions about targets for costs and energy efficiency need to be qualified Technology improvements likely to lower costs, but may not have major impact on total cost A significant impact on cost would come through permitting policy changes, e.g., use of public land Breakout Session Name Priority Barriers System Issues: need to assess delivery options in context of total system Materials: corrosion, H2 permeability Construction: welding, joining Maintenance and Operation: leak detection Pipeline Safety: odorants, flame visibility

82

Orientation Visit to the Portsmouth Gaseous Diffusion Plant  

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

PORTS-2011-08-03 PORTS-2011-08-03 Site: Portsmouth Gaseous Diffusion Plant Subject: Office of Enforcement and Oversight's Office of Safety and Emergency Management Evaluations Activity Report for the Orientation Visit to the Portsmouth Gaseous Diffusion Plant Dates of Activity : 08/01/2011 - 08/03/2011 Report Preparer: Joseph P. Drago Activity Description/Purpose: The U.S. Department of Energy (DOE) Office of Enforcement and Oversight, within the Office of Health, Safety and Security (HSS), conducted an orientation visit to the DOE Portsmouth Site Office (PORTS) and the Portsmouth/Paducah Project Office (PPPO) in Lexington, Kentucky, from August 1-3, 2011. The purpose of the visit was to discuss the nuclear safety oversight strategy, describe the site lead program, increase HSS personnel's operational awareness of the site's

83

Orientation Visit to the Paducah Gaseous Diffusion Plant  

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

PAD-2011-07-27 PAD-2011-07-27 Site: Paducah Gaseous Diffusion Plant Subject: Office of Enforcement and Oversight's Office of Safety and Emergency Management Evaluations Activity Report for the Orientation Visit to the Paducah Gaseous Diffusion Plant Dates of Activity : 07/25/2011 - 07/27/2011 Report Preparer: Joseph P. Drago Activity Description/Purpose: The U.S. Department of Energy (DOE) Office of Enforcement and Oversight, within the Office of Health, Safety and Security (HSS), conducted an orientation visit to the DOE Paducah Site Office (PAD) from July 25-27, 2011. The purpose of the visit was to discuss the nuclear safety oversight strategy, describe the site lead program, increase HSS personnel's operational awareness of the site's activities, and to determine how HSS can carry out its independent oversight and mission

84

Orientation Visit to the Paducah Gaseous Diffusion Plant  

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

PAD-2011-07-27 PAD-2011-07-27 Site: Paducah Gaseous Diffusion Plant Subject: Office of Enforcement and Oversight's Office of Safety and Emergency Management Evaluations Activity Report for the Orientation Visit to the Paducah Gaseous Diffusion Plant Dates of Activity : 07/25/2011 - 07/27/2011 Report Preparer: Joseph P. Drago Activity Description/Purpose: The U.S. Department of Energy (DOE) Office of Enforcement and Oversight, within the Office of Health, Safety and Security (HSS), conducted an orientation visit to the DOE Paducah Site Office (PAD) from July 25-27, 2011. The purpose of the visit was to discuss the nuclear safety oversight strategy, describe the site lead program, increase HSS personnel's operational awareness of the site's activities, and to determine how HSS can carry out its independent oversight and mission

85

Federal Facility Agreement for the Paducah Gaseous Diffusion Plant Summary  

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

Federal Facility Agreement for the Paducah Gaseous Federal Facility Agreement for the Paducah Gaseous Diffusion Plant State Kentucky Agreement Type Federal Facility Agreement Legal Driver(s) CERCLA/RCRA Scope Summary Ensure that the environmental impacts of activities at the Site are investigated and appropriate response actions are taken. Parties U.S. DOE; Kentucky Natural Resources and Environmental Protection Cabinet; U.S. EPA Date 2/01/1998 SCOPE * Ensure all releases of hazardous substances, pollutants, or contaminants are addressed to achieve comprehensive remediation of the site. * Establish a procedural framework and schedule for developing, implementing, and monitoring response actions in accordance with CERCLA, RCRA, and Kentucky Law. * Facilitate cooperation, exchange of information, and participation of the Parties and

86

Orientation Visit to the Portsmouth Gaseous Diffusion Plant  

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

PORTS-2011-08-03 PORTS-2011-08-03 Site: Portsmouth Gaseous Diffusion Plant Subject: Office of Enforcement and Oversight's Office of Safety and Emergency Management Evaluations Activity Report for the Orientation Visit to the Portsmouth Gaseous Diffusion Plant Dates of Activity : 08/01/2011 - 08/03/2011 Report Preparer: Joseph P. Drago Activity Description/Purpose: The U.S. Department of Energy (DOE) Office of Enforcement and Oversight, within the Office of Health, Safety and Security (HSS), conducted an orientation visit to the DOE Portsmouth Site Office (PORTS) and the Portsmouth/Paducah Project Office (PPPO) in Lexington, Kentucky, from August 1-3, 2011. The purpose of the visit was to discuss the nuclear safety oversight strategy, describe the site lead program, increase HSS personnel's operational awareness of the site's

87

Paducah Gaseous Diffusion Plant Annual Site Environmental Report for 1993  

SciTech Connect

The purpose of this document is to summarize effluent monitoring and environmental surveillance results and compliance with environmental laws, regulations, and orders at the Paducah Gaseous Diffusion Plant (PGDP). Environmental monitoring at PGDP consists of two major activities: effluent monitoring and environmental surveillance. Effluent monitoring is direct measurement or the collection and analysis of samples of liquid and gaseous discharges to the environment. Environmental surveillance is direct measurement or the collection and analysis of samples of air, water, soil, foodstuff, biota, and other media. Environmental monitoring is performed to characterize and quantify contaminants, assess radiation exposures of members of the public, demonstrate compliance with applicable standards and permit requirements, and detect and assess the effects (if any) on the local environment. Multiple samples are collected throughout the year and are analyzed for radioactivity, chemical content, and various physical attributes.

Not Available

1994-10-01T23:59:59.000Z

88

Method for diverting a gaseous sand-consolidating fluid  

SciTech Connect

An unconsolidated gas-producing sand in which the permeability is layered and the productivity can be impaired by liquid blocking can be consolidated by wetting the rock surfaces with a limited amount of water, injecting a smoke which selectively reduces the permeability of the most permeable layers by depositing on their faces unconsolidated masses of substantially inert solid particles and injecting a gaseous silicon polyhalide to convert a significant proportion of the rock surface-wettingwater to a grain bonding silica gel.

Davies, D. R.; Richardson, E. A.

1980-12-30T23:59:59.000Z

89

Method and apparatus for analyzing particle-containing gaseous suspensions  

DOE Patents (OSTI)

The method and apparatus permit analyses, by optical means, of properties of gaseous suspensions of particles, by measuring radiation that is emitted, transmitted or scattered by the particles. Determinations of composition, size, temperature and spectral emittance can be performed either in-situ or by sampling, and Fourier-transform infrared spectrometric techniques are most effectively used. Apparatus specifically adapted for performing radiation scattering analyses, and for collecting radiation from different sources, are provided. 51 figs.

Solomon, P.R.; Carangelo, R.M.; Best, P.E.

1987-03-24T23:59:59.000Z

90

North Dakota Natural Gas Plant Liquids Production, Gaseous Equivalent  

Gasoline and Diesel Fuel Update (EIA)

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Liquids Production, Gaseous Equivalent (Million Cubic Feet) North Dakota Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1960's 5,150 5,428 4,707 1970's 4,490 3,592 3,199 2,969 2,571 2,404 2,421 2,257 2,394 2,986 1980's 3,677 5,008 5,602 7,171 7,860 8,420 6,956 7,859 6,945 6,133 1990's 6,444 6,342 6,055 5,924 5,671 5,327 4,937 5,076 5,481 5,804 2000's 6,021 6,168 5,996 5,818 6,233 6,858 7,254 7,438 7,878 10,140 2010's 11,381 14,182 26,156 - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Release Date: 1/7/2014

91

Louisiana Natural Gas Plant Liquids Production, Gaseous Equivalent (Million  

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

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Liquids Production, Gaseous Equivalent (Million Cubic Feet) Louisiana Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1960's 115,177 140,290 179,117 1970's 193,209 195,072 197,967 206,833 194,329 189,541 172,584 166,392 161,511 165,515 1980's 142,171 142,423 128,858 124,193 132,501 117,736 115,604 124,890 120,092 121,425 1990's 119,405 129,154 132,656 130,336 128,583 146,048 139,841 150,008 144,609 164,794 2000's 164,908 152,862 152,724 124,955 133,434 103,381 105,236 110,745 94,785 95,359 2010's 102,448 95,630 - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data.

92

Michigan Natural Gas Plant Liquids Production, Gaseous Equivalent (Million  

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

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Liquids Production, Gaseous Equivalent (Million Cubic Feet) Michigan Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1960's 3,351 3,244 2,705 1970's 2,330 2,013 1,912 1,581 1,921 2,879 6,665 11,494 14,641 15,686 1980's 15,933 14,540 14,182 13,537 12,829 11,129 11,644 10,876 10,483 9,886 1990's 8,317 8,103 8,093 7,012 6,371 6,328 6,399 6,147 5,938 5,945 2000's 5,322 4,502 4,230 3,838 4,199 3,708 3,277 3,094 3,921 2,334 2010's 2,943 2,465 2,480 - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Release Date: 12/12/2013

93

California Natural Gas Plant Liquids Production, Gaseous Equivalent  

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

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Liquids Production, Gaseous Equivalent (Million Cubic Feet) California Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1960's 34,803 32,639 30,334 1970's 29,901 27,585 24,156 17,498 17,201 15,221 14,125 13,567 13,288 10,720 1980's 8,583 7,278 14,113 14,943 15,442 16,973 16,203 15,002 14,892 13,376 1990's 12,424 11,786 12,385 12,053 11,250 11,509 12,169 11,600 10,242 10,762 2000's 11,063 11,060 12,982 13,971 14,061 13,748 14,056 13,521 13,972 13,722 2010's 13,244 12,095 12,755 - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data.

94

Kentucky Natural Gas Plant Liquids Production, Gaseous Equivalent (Million  

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

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Liquids Production, Gaseous Equivalent (Million Cubic Feet) Kentucky Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1960's 11,500 8,573 8,579 1970's 6,574 6,133 6,063 5,441 5,557 5,454 5,231 4,764 6,192 3,923 1980's 6,845 5,638 6,854 6,213 6,516 6,334 4,466 2,003 2,142 1,444 1990's 1,899 2,181 2,342 2,252 2,024 2,303 2,385 2,404 2,263 2,287 2000's 1,416 1,558 1,836 1,463 2,413 1,716 2,252 1,957 2,401 3,270 2010's 4,576 4,684 - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Release Date: 12/12/2013 Next Release Date: 1/7/2014

95

New Mexico Natural Gas Plant Liquids Production, Gaseous Equivalent  

Gasoline and Diesel Fuel Update (EIA)

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Liquids Production, Gaseous Equivalent (Million Cubic Feet) New Mexico Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1960's 46,149 48,635 50,484 1970's 52,647 53,810 54,157 55,782 54,986 56,109 61,778 72,484 77,653 62,107 1980's 59,457 60,544 56,857 56,304 58,580 53,953 51,295 65,156 63,355 61,594 1990's 66,626 70,463 75,520 83,193 86,607 85,668 108,341 109,046 106,665 107,850 2000's 110,411 108,958 110,036 111,292 105,412 101,064 99,971 96,250 92,579 94,840 2010's 91,963 90,291 84,562 - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data.

96

Colorado Natural Gas Plant Liquids Production, Gaseous Equivalent (Million  

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

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Liquids Production, Gaseous Equivalent (Million Cubic Feet) Colorado Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1960's 4,126 4,546 4,058 1970's 3,405 4,152 4,114 4,674 6,210 9,620 11,944 13,507 13,094 12,606 1980's 12,651 13,427 12,962 11,314 10,771 11,913 10,441 10,195 11,589 13,340 1990's 13,178 15,822 18,149 18,658 19,612 25,225 23,362 28,851 24,365 26,423 2000's 29,105 29,195 31,952 33,650 35,821 34,782 36,317 38,180 53,590 67,607 2010's 82,637 90,801 - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data.

97

Alabama Natural Gas Plant Liquids Production, Gaseous Equivalent (Million  

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

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Liquids Production, Gaseous Equivalent (Million Cubic Feet) Alabama Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1960's 236 1970's 225 281 243 199 501 694 661 933 1,967 4,845 1980's 4,371 4,484 4,727 4,709 5,123 5,236 4,836 4,887 4,774 5,022 1990's 4,939 4,997 5,490 5,589 5,647 5,273 5,361 4,637 4,263 18,079 2000's 24,086 13,754 14,826 11,293 15,133 13,759 21,065 19,831 17,222 17,232 2010's 19,059 17,271 - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Release Date: 12/12/2013 Next Release Date: 1/7/2014 Referring Pages:

98

Texas Natural Gas Plant Liquids Production, Gaseous Equivalent (Million  

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

Liquids Production, Gaseous Equivalent (Million Cubic Feet) Liquids Production, Gaseous Equivalent (Million Cubic Feet) Texas Natural Gas Plant Liquids Production, Gaseous Equivalent (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1960's 433,684 457,117 447,325 1970's 466,016 448,288 470,105 466,143 448,993 435,571 428,635 421,110 393,819 352,650 1980's 350,312 345,262 356,406 375,849 393,873 383,719 384,693 364,477 357,756 343,233 1990's 342,186 353,737 374,126 385,063 381,020 381,712 398,442 391,174 388,011 372,566 2000's 380,535 355,860 360,535 332,405 360,110 355,589 373,350 387,349 401,503 424,042 2010's 433,622 481,308 - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data.

99

Gaseous divertor simulation in an arc-jet device  

SciTech Connect

The first experimental simulation of the gaseous tokamak divertor is presented. Significant results are: (1) neutral gas at a pressure of a few mTorr is sufficient to absorb the entire localized flux of plasma thermal energy and reidstribute it over a wide area; (2) elastic ion-neutral collisions constitute the main energy absorbing process (at T/sub e,i/ less than or equal to 5 eV), and (3) a large pressure difference between divertor and main plasma chamber is maintained by plasma pumping in the connecting channel.

Hsu, W.L.; Yamada, M.; Barrett, P.J.

1982-12-01T23:59:59.000Z

100

Removing gaseous contaminants in {sup 3}He by cryogenic stripping  

SciTech Connect

The Tritium Operations Group at LLNL, Tritium Facility has recently developed a {sup 3}He recovery system to remove argon, xenon, neon, hydrogen, and all other contaminants from the {sup 3}He stream in an Accelerator Production of Tritium (APT) experimental apparatus. In this paper the authors will describe in detail the background information, technical requirements, the design approach, and the results of their experimental tests. The authors believe this gas purification system may have other applications as it provides at a reasonable cost an efficient method for purification of gaseous helium.

Benapfl, M.; Biltoft, P.; Coombs, A. [Lawrence Livermore National Lab., CA (United States). Tritium Operations Group

1995-08-17T23:59:59.000Z

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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.


101

Portsmouth Gaseous Diffusion Plant Environmental report for 1990  

Science Conference Proceedings (OSTI)

This calendar year 1990 annual report on environmental surveillance of the US Department of Energy's (DOE's) Portsmouth Gaseous Diffusion Plant (PORTS) and its environs consists of two parts: the summary, discussion, and conclusions (Part 1) and the data presentation (Part 2). The objectives of this report are as follows: report 1990 monitoring data for the installation and its environs that may have been affected by operations on the plant site, provide reasonably detailed information about the plant site and plant operations, provide detailed information on input and assumptions used in all calculations, provide trend analyses (when appropriate) to indicate increases and decreases in environmental impact, and provide general information on plant quality assurance.

Counce-Brown, D. (ed.)

1991-09-01T23:59:59.000Z

102

DOE Seeks Proposals for Portsmouth Gaseous Diffusion Plant Technical Services Contract  

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

Cincinnati - The Department of Energy today issued a Draft Request for Proposals (RFP) for an Environmental Technical Services acquisition at the Portsmouth Gaseous Diffusion Plant near Piketon, Ohio.

103

Low energy consumption method for separating gaseous mixtures and in particular for medium purity oxygen production  

DOE Patents (OSTI)

A method for the separation of gaseous mixtures such as air and for producing medium purity oxygen, comprising compressing the gaseous mixture in a first compressor to about 3.9-4.1 atmospheres pressure, passing said compressed gaseous mixture in heat exchange relationship with sub-ambient temperature gaseous nitrogen, dividing the cooled, pressurized gaseous mixture into first and second streams, introducing the first stream into the high pressure chamber of a double rectification column, separating the gaseous mixture in the rectification column into a liquid oxygen-enriched stream and a gaseous nitrogen stream and supplying the gaseous nitrogen stream for cooling the compressed gaseous mixture, removing the liquid oxygen-enriched stream from the low pressure chamber of the rectification column and pumping the liquid, oxygen-enriched steam to a predetermined pressure, cooling the second stream, condensing the cooled second stream and evaporating the oxygen-enriched stream in an evaporator-condenser, delivering the condensed second stream to the high pressure chamber of the rectification column, and heating the oxygen-enriched stream and blending the oxygen-enriched stream with a compressed blend-air stream to the desired oxygen concentration.

Jujasz, Albert J. (North Olmsted, OH); Burkhart, James A. (Olmsted Falls, OH); Greenberg, Ralph (New York, NY)

1988-01-01T23:59:59.000Z

104

Liquefied Gaseous Fuels Spill Test Facility: Overview of STF capabilities  

SciTech Connect

The Liquefied Gaseous Fuels Spill Test Facility (STF) constructed at the Department of Energy`s Nevada Test Site is a basic research tool for studying the dynamics of accidental releases of various hazardous liquids. This Facility is designed to (1) discharge, at a controlled rate, a measured volume of hazardous test liquid on a prepared surface of a dry lake bed (Frenchman Lake); (2) monitor and record process operating data, close-in and downwind meteorological data, and downwind gaseous concentration levels; and (3) provide a means to control and monitor these functions from a remote location. The STF will accommodate large and small-scale testing of hazardous test fluid release rates up to 28,000 gallons per minute. Spill volumes up to 52,800 gallons are achievable. Generic categories of fluids that can be tested are cryogenics, isothermals, aerosol-forming materials, and chemically reactive. The phenomena that can be studied include source definition, dispersion, and pool fire/vapor burning. Other capabilities available at the STF include large-scale wind tunnel testing, a small test cell for exposing personnel protective clothing, and an area for developing mitigation techniques.

Gray, H.E.

1993-09-01T23:59:59.000Z

105

Greenhouse warming potential of candidate gaseous diffusion plant coolants  

SciTech Connect

A preliminary estimate has been made of the greenhouse warming potential (GWP) of coolants under consideration as substitutes for CFC-114 in the gaseous diffusion plants. Coolants are not at present regulated on the basis of GWP, but may well be in the future. Use of c-C{sub 4}F{sub 8} or n-C{sub 4}F{sub 10} is estimated to have three to four times the greenhouse impact of an equivalent use of CFC-114. Neither of the substitutes, of course, would cause any ozone depletion. HCFC-124 (a probable commercial substitute for CFC-114, but not presently under serious consideration due to its relatively high UF{sub 6} reactivity) would have much less greenhouse and ozone depletion impact than CFC-114. The GWP estimates derive from a simple model that approximately reproduces literature values for similar compounds. The major uncertainty in these estimates lies in the atmospheric lifetime, especially of the perfluorocarbon compounds, for which little reliable information exists. In addition to GWP estimates for coolants, the overall greenhouse impact of the gaseous diffusion plants is calculated, including indirect power-related CO{sub 2} emissions. This result is used to compare greenhouse impacts of nuclear- and coal-produced electricity. 11 refs., 2 figs., 5 tabs.

Trowbridge, L.D.

1991-03-01T23:59:59.000Z

106

Online learning of a neural fuel control system for gaseous fueled si engines  

Science Conference Proceedings (OSTI)

This dissertation presents a new type of fuel control algorithm for gaseous fuelled vehicles. Gaseous fuels such as hydrogen and natural gas have been shown to be less polluting than liquid fuels such as gasoline, both at the tailpipe and on a total ...

Travis Kent Wiens

2008-01-01T23:59:59.000Z

107

Extending the Photon Mapping Method for Realistic Rendering of Hot Gaseous Fluids  

E-Print Network (OSTI)

fluid dynamics have proved very successful. As a result, diverse physically based fluid animation fluids. In addition to the generation of ap- pealing motions of gaseous fluids, several inter- esting, they are gen- erated within the gaseous fluid, but an energy value is assigned to each one according to the to

Texas at Austin, University of

108

Paducah Gaseous Diffusion Plant, Production Workers Screening Projects |  

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

Production Workers Screening Production Workers Screening Projects Paducah Gaseous Diffusion Plant, Production Workers Screening Projects Project Name: Worker Health Protection Program Covered DOE Site: Paducah Worker Population Served: Production Workers Principal Investigator: Jim Frederick Co-Principal Investigator: Steven Markowitz, MD Toll-free Telephone: (888) 241-1199 Local Outreach Office: James Harbison 2525 Cairo Road Paducah, KY 42001 Website: http://www.worker-health.org/ This project is conducted by the United Steelworkers in conjunction with Queens College of the City University of New York. The program is being offered as a service to both former and current workers. Free of charge, eligible workers can receive a medical exam, including chest X-ray and breathing test, and an educational workshop. This program also offers CT

109

Portsmouth Gaseous Diffusion Plant Former Workers, Construction Worker  

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

Plant Former Workers, Construction Plant Former Workers, Construction Worker Screening Projects Portsmouth Gaseous Diffusion Plant Former Workers, Construction Worker Screening Projects Project Name: Building Trades National Medical Screening Program Covered DOE Site: Portsmouth Worker Population Served: Construction Workers Principal Investigator: Knut Ringen, DrPh, MHA, MPH Toll-free Telephone: (888) 464-0009 Local Outreach Office: Ron Bush 1236 Gallia Street Portsmouth, OH 45662 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 and/or solvents. The project is being carried out by a large group led by

110

Portsmouth Gaseous Diffusion Plant annual site environmental report for 1993  

Science Conference Proceedings (OSTI)

This calendar year (CY) 1993 annual report on environmental monitoring of the US Department of Energy`s (DOE`s) Portsmouth Gaseous Diffusion Plant (Portsmouth) and its environs consists of three separate documents: a summary pamphlet for the general public; a more detail discussion and of compliance status, data, and environmental impacts (this document); and a volume of detailed data that is available on request. The objectives of this report are to report compliance status during 1993; provide information about the plant site and plant operations; report 1993 monitoring data for the installation and its environs that may have been affected by operations on the plant site; document information on input and assumptions used in calculations; provide trend analyses (where appropriate) to indicate increases and decreases in environmental impact, and provide general information on quality assurance for the environmental monitoring program.

Horak, C.M. [ed.

1994-11-01T23:59:59.000Z

111

Gaseous diffusion plant transition from DOE to external regulation  

SciTech Connect

After many years of operation as government-owned/contractor-operated facilities, large portions of the gaseous diffusion plants (GDPs) at Portsmouth, Ohio, and Paducah, Kentucky, were leased to the United States Enrichment Corporation (USEC). These facilities are now certified by the U.S. Nuclear Regulatory Commission (NRC) and subject to oversight by the Occupational Safety and Health Administration (OSHA). The transition from DOE to NRC regulation was more difficult than expected. The original commitment was to achieve NRC certification in October 1995; however, considerably more time was required and transition-related costs escalated. The Oak Ridge Operations Office originally estimated the cost of transition at $60 million; $240 million has been spent to date. The DOE`s experience in transitioning the GDPs to USEC operation with NRC oversight provides valuable lessons (both positive and negative) that could be applied to future transitions.

Dann, R.K.; Crites, T.R.; Rahm-Crites, L.K. [Lawrence Livermore National Lab., CA (United States)

1997-12-01T23:59:59.000Z

112

Gaseous Arginine Conformers and Their Unique Intramolecular Interactions  

DOE Green Energy (OSTI)

Extensive ab initio calculations were employed to characterize stable conformers of gaseous arginine, both canonical and zwitterionic tautomers. Step-by-step geometry optimizations of possible single-bond rotamers at the B3LYP/6-31G(d), B3LYP/6-31++G(d,p) and MP2/6-31++G(d,p) levels yield numerous structures that are more stable than any known ones. The final electronic energies of the conformers were determined at the CCSD/6-31++G(d,p) level. The lowest energies of the canonical and zwitterionic structures are lower than the existing ones by 2.0 and 2.3 kcal/mol, respectively. The relative energies, rotational constants, dipole moments and harmonic frequencies of the stable conformers were given for future experimental verifications. The conformational distributions at various temperatures, estimated based upon the thermodynamic principles, consist almost exclusively of the newly found structures. One striking feature is the occurrence of the blue-shifting hydrogen bonds in all the six most stable conformers. A unique feature of important conformations is the coexistence of dihydrogen, blue- and red-shifting hydrogen bonds. In addition to the hydrogen bonds, the stereoelectronic effects were also found to be important stabilization factors. The calculated and measured proton affinities agree within the theoretical and experimental uncertainties, affirming high quality of our conformational search. The theoretical gas phase basicity of 245.9 kcal/mol is also in good agreement with the experimental value of 240.6 kcal/mol. The extensive searches establish firmly that gaseous arginine exists primarily in the canonical and not the zwitterionic form. Computing resources were available through a Computational Grand Challenge Application grant from the Molecular Sciences Computing Facility in the Environmental Molecular Sciences Laboratory. PNNL is operated by Battelle for the U.S. DOE under Contract DE-AC06-76RLO 1830.

Ling, Sanliang; Yu, Wenbo; Huang, Zhijian; Lin, Zijing; Haranczyk, Maciej; Gutowski, Maciej S.

2006-11-09T23:59:59.000Z

113

Gaseous Arginine Conformers and Their Unique Intramolecular Interactions.  

DOE Green Energy (OSTI)

Extensive ab initio calculations were employed to characterize stable conformers of gaseous arginine, both the canonical and zwitterionic tautomers. Step-by-step geometry optimizations of possible single-bond rotamers at the B3LYP/6-31G(d), B3LYP/6-31++G(d,p), and MP2/6-31++G(d,p) levels yield numerous structures that are more stable than any known ones. The final electronic energies of the conformers were determined at the CCSD/6-31++G(d,p) level. The lowest energies of the canonical and zwitterionic structures are lower than the existing values by 2.0 and 2.3 kcal/mol, respectively. The relative energies, rotational constants, dipole moments, and harmonic frequencies of the stable conformers remain for future experimental verification. The conformational distributions at various temperatures, estimated according to thermodynamic principles, consist almost exclusively of the newly found structures. One striking feature is the occurrence of blueshifting hydrogen bonds in all six of the most stable conformers. A unique feature of important conformations is the coexistence of dihydrogen and blue- and red-shifting hydrogen bonds. In addition to the hydrogen bonds, the stereoelectronic effects were also found to be important stabilization factors. The calculated and measured proton affinities agree within the theoretical and experimental uncertainties, affirming the high quality of our conformational search. The theoretical gas-phase basicity of 245.9 kcal/mol is also in good agreement with the experimental value of 240.6 kcal/mol. The extensive searches establish firmly that gaseous arginine exists primarily in the canonical and not the zwitterionic form.

Ling, Sanliang; Yu, Wenbo; Huang, Zhijian; Lin, Zijing; Haranczyk, Maciej; Gutowski, Maciej S.

2006-11-09T23:59:59.000Z

114

,"Louisiana Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Louisiana Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2011 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_sla_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_sla_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

115

,"Nebraska Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Nebraska Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2012 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_sne_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_sne_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

116

,"Pennsylvania Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Pennsylvania Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2011 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_spa_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_spa_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

117

,"South Dakota Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Plant Liquids Production, Gaseous Equivalent (MMcf)" Plant Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","South Dakota Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2012 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_ssd_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_ssd_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

118

,"Wyoming Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Wyoming Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2011 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_swy_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_swy_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

119

,"Montana Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Montana Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2011 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_smt_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_smt_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

120

,"Kansas Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Kansas Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2011 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_sks_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_sks_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

,"Alabama Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Alabama Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2011 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_sal_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_sal_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

122

,"California Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","California Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2012 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_sca_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_sca_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

123

,"Oklahoma Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Oklahoma Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2011 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_sok_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_sok_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

124

,"Ohio Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Ohio Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2012 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_soh_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_soh_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

125

,"Utah Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Utah Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2011 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_sut_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_sut_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

126

,"Alaska Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Alaska Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2012 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_sak_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_sak_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

127

,"Indiana Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Plant Liquids Production, Gaseous Equivalent (MMcf)" Plant Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Indiana Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2012 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_sin_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_sin_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

128

Application of Gaseous Sphere Injection Method for Modeling Under-expanded H2 Injection  

DOE Green Energy (OSTI)

A methodology for modeling gaseous injection has been refined and applied to recent experimental data from the literature. This approach uses a discrete phase analogy to handle gaseous injection, allowing for addition of gaseous injection to a CFD grid without needing to resolve the injector nozzle. This paper focuses on model testing to provide the basis for simulation of hydrogen direct injected internal combustion engines. The model has been updated to be more applicable to full engine simulations, and shows good agreement with experiments for jet penetration and time-dependent axial mass fraction, while available radial mass fraction data is less well predicted.

Whitesides, R; Hessel, R P; Flowers, D L; Aceves, S M

2010-12-03T23:59:59.000Z

129

,"Michigan Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Michigan Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2012 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_smi_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_smi_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

130

,"Florida Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Florida Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2012 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_sfl_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_sfl_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

131

,"Mississippi Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Mississippi Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2011 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_sms_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_sms_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

132

,"Texas Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)"  

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

Liquids Production, Gaseous Equivalent (MMcf)" Liquids Production, Gaseous Equivalent (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Texas Natural Gas Plant Liquids Production, Gaseous Equivalent (MMcf)",1,"Annual",2011 ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","na1150_stx_2a.xls" ,"Available from Web Page:","http://tonto.eia.gov/dnav/ng/hist/na1150_stx_2a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.doe.gov"

133

Dispersing the Gaseous Protoplanetary Disc and Halting Type II Migration  

E-Print Network (OSTI)

More than 30 extra-solar Jupiter-like planets have shorter periods than the planet Mercury. It is generally accepted that they formed further out, past the snow line (?1 AU), and migrated inwards. In order to be driven by tidal torques from the gaseous disc, the disc exterior to the planet had to contain about a planetary mass. The fact that the planets stopped migrating means that their outer disc was removed. We suggest, following the simulation by Bate et al. (2003), that the outer disc was accreted by the planet. This not only halts migration but removes the outer disc for planets interior to about 2 AU. The disc further out could have been removed by photoevaporation (Matsuyama et al. 2003). Furthermore, as also shown by Bate et al. (op cit) this process also provides an upper limit to planetary masses in agreement with the analysis of observed planetary masses by Zucker & Mazeh (2002). In this scenario, the endgame is a race. The central star is accreting the inner disc and the planet, while the planet is accreting the outer disc. The planet survives if it accretes its outer disc before being accreted by the star. The winner is determined solely by the ratio of the mass of the outer disc to the local surface density of the disc. Some planets are certainly eaten by the central star. Subject headings: extrasolar planets, Jupiter 1.

M. Lecar; D. D. Sasselov

2003-01-01T23:59:59.000Z

134

Gaseous fueled vehicles: A role for natural gas and hydrogen  

SciTech Connect

The commercialization of gaseous hydrogen fueled vehicles requires both the development of hydrogen fueled vehicles and the establishment of a hydrogen fueling infrastructure. These requirements create a classic chicken and egg scenario in that manufacturers will not build and consumers will not buy vehicles without an adequate refueling infrastructure and potential refueling station operators will not invest the needed capital without an adequate market to serve. One solution to this dilemma is to create a bridging strategy whereby hydrogen is introduced gradually via another carrier. The only contending alternative fuel that can act as a bridge to hydrogen fueled vehicles is natural gas. To explore this possibility, IGT is conducting emission tests on its dedicated natural gas vehicle (NGV) test platform to determine what, if any, effects small quantities of hydrogen have on emissions and performance. Furthermore, IGT is actively developing an adsorbent based low-pressure natural gas storage system for NGV applications. This system has also shown promise as a storage media for hydrogen. A discussion of our research results in this area will be presented. Finally, a review of IGT's testing facility will be presented to indicate our capabilities in conducted natural gas/hydrogen vehicle (NGHV) research. 3 refs., 10 figs.

Blazek, C.F.; Jasionowski, W.J.

1991-01-01T23:59:59.000Z

135

GASEOUS CO ABUNDANCE-AN EVOLUTIONARY TRACER FOR MOLECULAR CLOUDS  

SciTech Connect

Planck cold clumps are among the most promising objects to investigate the initial conditions of the evolution of molecular clouds. In this work, by combing the dust emission data from the survey of the Planck satellite with the molecular data of {sup 12}CO/{sup 13}CO/C{sup 18}O (1-0) lines from observations with the Purple Mountain Observatory 13.7 m telescope, we investigate the CO abundance, CO depletion, and CO-to-H{sub 2} conversion factor of 674 clumps in the early cold cores sample. The median and mean values of the CO abundance are 0.89 Multiplication-Sign 10{sup -4} and 1.28 Multiplication-Sign 10{sup -4}, respectively. The mean and median of CO depletion factor are 1.7 and 0.9, respectively. The median value of X{sub CO-to-H{sub 2}} for the whole sample is 2.8 Multiplication-Sign 10{sup 20} cm{sup -2} K{sup -1} km{sup -1} s. The CO abundance, CO depletion factor, and CO-to-H{sub 2} conversion factor are strongly (anti-)correlated to other physical parameters (e.g., dust temperature, dust emissivity spectral index, column density, volume density, and luminosity-to-mass ratio). To conclude, the gaseous CO abundance can be used as an evolutionary tracer for molecular clouds.

Liu Tie; Wu Yuefang; Zhang Huawei, E-mail: liutiepku@gmail.com, E-mail: ywu@pku.edu.cn [Department of Astronomy, Peking University, Beijing 100871 (China)

2013-09-20T23:59:59.000Z

136

Portsmouth Gaseous Diffusion Plant environmental report for 1989  

Science Conference Proceedings (OSTI)

This calendar year 1989 annual report on environmental surveillance of the US Department of Energy's (DOE) Portsmouth Gaseous Diffusion Plant (PORTS) and its environs consists of two parts: the Summary, Discussion, and Conclusions (Part 1) and the Data Presentation (Part 2). The objectives of this report are the following: report 1989 monitoring data for the installation and its environs that may have been affected by operations on the plant site, provide reasonably detailed information about the plant site and plant operations, provide detailed information on input and assumptions used in all calculations, provide trend analyses (where appropriate) to indicate increases and decreases in environmental impact, and provide general information on plant quality assurance. Routine monitoring and sampling for radiation, radioactive materials, and chemical substances on and off the DOE site are used to document compliance with appropriate standards, to identify trends, to provide information for the public, and to contribute to general environmental knowledge. The surveillance program assists in fulfilling the DOE policy of protecting the public, employees, and environment from harm that could be caused by its activities and reducing negative environmental impacts to the greatest degree practicable. Environmental-monitoring information complements data on specific releases, trends, and summaries. 26 refs.

Turner, J.W. (ed.) (Martin Marietta Energy Systems, Inc., Oak Ridge, TN (USA))

1990-10-01T23:59:59.000Z

137

Gaseous fueled vehicles: A role for natural gas and hydrogen  

DOE Green Energy (OSTI)

The commercialization of gaseous hydrogen fueled vehicles requires both the development of hydrogen fueled vehicles and the establishment of a hydrogen fueling infrastructure. These requirements create a classic chicken and egg scenario in that manufacturers will not build and consumers will not buy vehicles without an adequate refueling infrastructure and potential refueling station operators will not invest the needed capital without an adequate market to serve. One solution to this dilemma is to create a bridging strategy whereby hydrogen is introduced gradually via another carrier. The only contending alternative fuel that can act as a bridge to hydrogen fueled vehicles is natural gas. To explore this possibility, IGT is conducting emission tests on its dedicated natural gas vehicle (NGV) test platform to determine what, if any, effects small quantities of hydrogen have on emissions and performance. Furthermore, IGT is actively developing an adsorbent based low-pressure natural gas storage system for NGV applications. This system has also shown promise as a storage media for hydrogen. A discussion of our research results in this area will be presented. Finally, a review of IGT's testing facility will be presented to indicate our capabilities in conducted natural gas/hydrogen vehicle (NGHV) research. 3 refs., 10 figs.

Blazek, C.F.; Jasionowski, W.J.

1991-01-01T23:59:59.000Z

138

DOE Seeks Quotes for Paducah Gaseous Diffusion Plant Environmental Technical Services  

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

Cincinnati The Department of Energy (DOE) today issued a Request for Quotation (RFQ) for an Environmental Technical Services acquisition at the Paducah Gaseous Diffusion Plant (GDP) for the Portsmouth Paducah Project Office (PPPO).

139

Early Morning Ventilation of a Gaseous Tracer from a Mountain Valley  

Science Conference Proceedings (OSTI)

An important component of a joint Environmental Protection AgencyDepartment of Energy field experiment in Brush Creek Valley, Colorado in JulyAugust 1982, was an aircraft sampling task to help verify the early morning ventilation of a gaseous ...

Montie M. Orgill

1989-07-01T23:59:59.000Z

140

Interpolation and Profile Correction (IPC) Method for Shortwave Radiative Transfer in Spectral Intervals of Gaseous Absorption  

Science Conference Proceedings (OSTI)

The new interpolation and profile correction (IPC) method for radiance/flux calculations in gaseous absorption bands is presented. The IPC method is designed to allow an arbitrary spectral resolution including monochromatic mode. It features a ...

Alexei I. Lyapustin

2003-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

A Relaxed Eddy Accumulation System for Measuring Surface Fluxes of Total Gaseous Mercury  

Science Conference Proceedings (OSTI)

A relaxed eddy accumulation (REA) system was designed to continuously measure total gaseous mercury (TGM) fluxes over a forest canopy. TGM concentration measurements were measured at 5-min intervals with a Tekran model 2537A mercury analyzer ...

Jesse O. Bash; David R. Miller

2008-02-01T23:59:59.000Z

142

Liquid and Gaseous Waste Operations Department Annual Operating Report, CY 1993  

SciTech Connect

This report summarizes the activities of the waste management operations section of the liquid and gaseous waste operations department at ORNL for 1993. The process waste, liquid low-level waste, gaseous waste systems activities are reported, as well as the low-level waste solidification project. Upgrade activities is the various waste processing and treatment systems are summarized. A maintenance activity overview is provided, and program management, training, and other miscellaneous activities are covered.

Maddox, J.J.; Scott, C.B.

1994-02-01T23:59:59.000Z

143

Infrared Spectroscopy of Atomic Lines in Gaseous Nebulae  

E-Print Network (OSTI)

Spectroscopy in the infrared provides a means to assess important properties of the plasma in gaseous nebulae. We present some of our own work that illustrates the need for interactions between the themes of this conference - astronomical data, atomic data, and plasma simulations. We undertook Infrared Space Observatory (ISO) observations with the intent of better understanding the effects of density variations in nebulae, particularly planetary nebulae (PNs), by determining average electron densities from the flux ratios of several fine-structure, IR emission lines. Instead, we are able to ascertain only minor density information because of several instances of the observed line flux ratios being out of range of the theoretical predictions using current atomic data. In these cases, the ISO data cannot presently be used to derive electron density, but rather provide direction for needed improvements in the atomic collision strengths. We have detected an unidentified (uid) strong emission line in an ISO/SWS spectrum of the Orion Nebula. The line has a rest wavelength 2.89350$\\pm$0.00003 $\\mu$m. A long-slit UKIRT observation confirms the presence of this line and shows that the emission is spatially extended and appears to be coincident with the brightest part of the ionized region. We do not detect the uid line in our SWS02 spectra of any of the several bright PNs which we observed for a comparable time. The need for basic atomic data, in this case wavelengths to aid species identification, is paramount for future progress. We look toward the future with a brief synopsis of upcoming or planned IR missions.

R. H. Rubin; R. J. Dufour; T. R. Geballe; S. W. J. Colgan; J. P. Harrington; S. D. Lord; A. L. Liao; D. A. Levine

2001-09-23T23:59:59.000Z

144

Dissolved gaseous mercury behavior in shallow water estuaries  

E-Print Network (OSTI)

The formation of dissolved gaseous mercury (DGM) can be an important pathway for mercury removal from an aquatic environment. DGM evasional fluxes from an aquatic system can account for up to 95% of atmospheric Hg and its deposition pathways. While this makes DGM an important species of mercury to investigate, the difficulty of accurately analyzing DGM has prevented many from studying it. In this study, DGM was measured in two different types of estuarine environments and with two different methods, discrete and continuous analysis. The discrete technique works reasonably well and is reproducible, but it does not allow one to observe rapid changes in DGM concentration due to long analysis times (~2 hr per sample). When used in this study, the discrete sampling technique agreed well with the continuous technique for Offatts Bayou, Galveston, Texas, and Georgiana Slough in the California Bay-Delta region. The average DGM concentration during the March continuous study at Offatts Bayou was 25.3 8.8 pg L-1. This is significantly higher than the average DGM concentration from Georgiana Slough during late March 2006 (9.6 6.6 pg L-1). DGM seemed to correlate best with photosynthetically active radiation (PAR) data in every study, suggesting that the primary control of its formation is solar irradiation. Stronger positive correlations with PAR were seen when DGM data was shifted back one hour, indicating that mercury photoreactions take time to complete. DGM also correlated positively with wind speed in most instances. However, increased wind speed should enhance air to water transfer of elemental mercury, thus one would expect a negative correlation. DGM co-varied negatively with salinity during the continuous studies, suggesting that the DGM pool is reduced in surface waters by chloride mediated oxidation. Three predictive flux models were used in the study to assess the potential for DGM water to air transfer. For both the Georgiana Slough and Offatts Bayou studies, the predicted flux dropped to or below zero after sunset. This study does contribute to the understanding of DGM cycling in aquatic environments as there are few studies that have made continuous DGM measurements in estuarine environments.

Landin, Charles Melchor

2007-12-01T23:59:59.000Z

145

Dissolved gaseous mercury behavior in shallow water estuaries  

E-Print Network (OSTI)

The formation of dissolved gaseous mercury (DGM) can be an important pathway for mercury removal from an aquatic environment. DGM evasional fluxes from an aquatic system can account for up to 95% of atmospheric Hg and its deposition pathways. While this makes DGM an important species of mercury to investigate, the difficulty of accurately analyzing DGM has prevented many from studying it. In this study, DGM was measured in two different types of estuarine environments and with two different methods, discrete and continuous analysis. The discrete technique works reasonably well and is reproducible, but it does not allow one to observe rapid changes in DGM concentration due to long analysis times (~2 hr per sample). When used in this study, the discrete sampling technique agreed well with the continuous technique for Offatts Bayou, Galveston, Texas, and Georgiana Slough in the California Bay-Delta region. The average DGM concentration during the March continuous study at Offatts Bayou was 25.3 + 8.8 pg L-1. This is significantly higher than the average DGM concentration from Georgiana Slough during late March 2006 (9.6 + 6.6 pg L-1). DGM seemed to correlate best with photosynthetically active radiation (PAR) data in every study, suggesting that the primary control of its formation is solar irradiation. Stronger positive correlations with PAR were seen when DGM data was shifted back one hour, indicating that mercury photoreactions take time to complete. DGM also correlated positively with wind speed in most instances. However, increased wind speed should enhance air to water transfer of elemental mercury, thus one would expect a negative correlation. DGM co-varied negatively with salinity during the continuous studies, suggesting that the DGM pool is reduced in surface waters by chloride mediated oxidation. Three predictive flux models were used in the study to assess the potential for DGM water to air transfer. For both the Georgiana Slough and Offatts Bayou studies, the predicted flux dropped to or below zero after sunset. This study does contribute to the understanding of DGM cycling in aquatic environments as there are few studies that have made continuous DGM measurements in estuarine environments.

Landin, Charles Melchor

2007-12-01T23:59:59.000Z

146

Carburization of austenitic alloys by gaseous impurities in helium  

SciTech Connect

The carburization behavior of Alloy 800H, Inconel Alloy 617 and Hastelloy Alloy X in helium containing various amounts of H/sub 2/, CO, CH/sub 4/, H/sub 2/O and CO/sub 2/ was studied. Corrosion tests were conducted in a temperature range from 649 to 1000/sup 0/C (1200 to 1832/sup 0/F) for exposure time up to 10,000 h. Four different helium environments, identified as A, B, C, and D, were investigated. Concentrations of gaseous impurities were 1500 ..mu..atm H/sub 2/, 450 ..mu..atm CO, 50 ..mu..atm CH/sub 4/ and 50 ..mu..atm H/sub 2/O for Environment A; 200 ..mu..atm H/sub 2/, 100 ..mu..atm CO, 20 ..mu..atm CH/sub 4/, 50 ..mu..atm H/sub 2/O and 5 ..mu..atm CO/sub 2/ for Environment B; 500 ..mu..atm H/sub 2/, 50 ..mu..atm CO, 50 ..mu..atm CH/sub 4/ and < 0.5 ..mu..atm H/sub 2/O for Environment C; and 500 ..mu..atm H/sub 2/, 50 ..mu..atm CO, 50 ..mu..atm CH/sub 4/ and 1.5 ..mu..atm H/sub 2/O for Environment D. Environments A and B were characteristic of high-oxygen potential, while C and D were characteristic of low-oxygen potential. The results showed that the carburization kinetics in low-oxygen potential environments (C and D) were significantly higher, approximately an order of magnitude higher at high temperatures, than those in high-oxygen potential environments (A and B) for all three alloys. Thermodynamic analyses indicated no significant differences in the thermodynamic carburization potential between low- and high-oxygen potential environments. It is thus believed that the enhanced carburization kinetics observed in the low-oxygen potential environments were related to kinetic effects. A qualitatively mechanistic model was proposed to explain the enhanced kinetics. The present results further suggest that controlling the oxygen potential of the service environment can be an effective means of reducing carburization of alloys.

Lai, G.Y.; Johnson, W.R.

1980-03-01T23:59:59.000Z

147

Phyto remediation groundwater trends at the DOE portsmouth gaseous  

Science Conference Proceedings (OSTI)

This paper describes the progress of a phyto-remediation action being performed at the Department of Energy (DOE) Portsmouth Gaseous Diffusion Plant (PORTS) X-740 Waste Oil Handling Facility to remediate contaminated groundwater under a Resource Conservation and Recovery Act (RCRA) closure action. This action was effected by an Ohio Environmental Protection Agency (OEPA) decision to use phyto-remediation as the preferred remedy for the X-740 groundwater contamination. This remedy was recognized as a cost-effective, low-maintenance, and promising method to remediate groundwater contaminated with volatile organic compounds (VOCs), primarily trichloroethylene (TCE). During 1999, prior to the tree installation at the X-740 Phyto-remediation Area, water level measurements in the area were collected from 10 monitoring wells completed in the Gallia Formation. The Gallia is the uppermost water-bearing zone and contains most of the groundwater contamination at PORTS. During the tree installation which took place during the summer of 1999, four new Gallia monitoring wells were installed at the X-740 Area in addition to the 10 Gallia wells which had been installed in the same area during the early 1990's. Manual water level measurements were collected quarterly from these 14 Gallia monitoring wells between 1998 and 2001. These manual water level measurements were collected to monitor the combined impact of the trees on the groundwater prior to root development. Beginning in 2001, water level measurements were collected monthly during the growing season (April-September) and quarterly during the dormant season (October-March). A total of eight water level measurements were collected annually to monitor the phyto-remediation system's effect on the groundwater in the X- 740 Area. The primary function of the X-740 Phyto-remediation Area is to hydraulically prevent further spreading of the TCE plume. This process utilizes deep-rooted plants, such as poplar trees, to extract large quantities of water from the saturated zone. The focus of any phyto-remediation system is to develop a cone of depression under the entire plantation area. This cone of depression can halt migration of the contaminant plume and can create a hydraulic barrier, thereby maintaining plume capture. While a cone of depression is not yet evident at the X-740 Phyto-remediation Area, water level measurements in 2004 and 2005 differed from measurements taken in previous years, indicating that the now mature trees are influencing groundwater flow direction and gradient at the site. Water level measurements taken from 2003 through 2005 indicate a trend whereby groundwater elevations steadily decreased in the X-740 Phyto-remediation System. During this time, an average groundwater table drop of 0.30 feet was observed. Although the time for the phyto-remediation system to mature had been estimated at two to three years, these monitoring data indicate a period of four to five years for the trees to reach maturity. Although, these trends are not apparent from analysis of the potentiometric surface contours, it does appear that the head gradient across the site is higher during the spring and lower during the fall. It is not clear, however, whether this trend was initiated by the installation of the phyto-remediation system. This paper will present the groundwater data collected to date to illustrate the effects of the trees on the groundwater table. (authors)

Lewis, A.C.; Baird, D.R. [CDM, Piketon, OH (United States)

2007-07-01T23:59:59.000Z

148

Portsmouth Gaseous Diffusion Plant Director's Final Findings and Orders, October 4, 1995  

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

Portsmouth Gaseous Diffusion Plant Director's Final Portsmouth Gaseous Diffusion Plant Director's Final Findings and Orders, October 4, 1995 BEFORE THE OHIO ENVIRONMENTAL PROTECTION AGENCY In the Matter Of: United States Department of Energy : Director's Final Portsmouth Gaseous Diffusion Plant : Findings and Orders P.O. Box 700 : Piketon, Ohio 45661-0700 : Respondent It is hereby agreed by and among the parties hereto as follows: Table of Contents I. Jurisdiction II. Parties Bound III. Definitions IV. Findings of Fact V. Orders VI. Limitations of Director's Approval VII. Notice VIII. Project Managers IX. Dispute Resolution X. Funding XI. Other Applicable Laws XII. Reservation of Rights XIII. Modification XIV. Termination XV. Other Claims XVI. Signatories XVII. Waiver I. Jurisdiction These Director's Final Findings and Orders ("Orders") are issued to the United States

149

Oak Ridge K-25 Gaseous Diffusion Plant, Former Production Workers Screening  

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

K-25 Gaseous Diffusion Plant, Former Production Workers K-25 Gaseous Diffusion Plant, Former Production Workers Screening Projects Oak Ridge K-25 Gaseous Diffusion Plant, Former Production Workers Screening Projects Project Name: Worker Health Protection Program Covered DOE Site: K-25 Worker Population Served: Production Workers Principal Investigator: Jim Frederick Co-Principal Investigator: Steven Markowitz, MD Toll-free Telephone: (888) 241-1199 Local Outreach Office: Bruce Lawson 133 Raleigh Road Oak Ridge, TN 37830 Local Medical Clinics: ParkMed 110 S. Illinois Avenue Oak Ridge, TN 37380 Website: http://www.worker-health.org/ This project is conducted by the United Steelworkers in conjunction with Queens College of the City University of New York. The program is being offered as a service to both former and current workers. Free of charge,

150

Simulation of VUV electroluminescence in micropattern gaseous detectors: the case of GEM and MHSP  

E-Print Network (OSTI)

Electroluminescence produced during avalanche development in gaseous avalanche detectors is an useful information for triggering, calorimetry and tracking in gaseous detectors. Noble gases present high electroluminescence yields, emitting mainly in the VUV region. The photons can provide signal readout if appropriate photosensors are used. Micropattern gaseous detectors are good candidates for signal amplification in high background and/or low rate experiments due to their high electroluminescence yields and radiopurity. In this work, the VUV light responses of the Gas Electron Multiplier and of the Micro-Hole Strip Plate, working with pure xenon, are simulated and studied in detail using a new and versatile C++ toolkit. It is shown that the solid angle subtended by a photosensor placed below the microstructures depends on the operating conditions. The obtained absolute EL yields, determined for different gas pressures and as functions of the applied voltage, are compared with those determined experimentally.

C. A. B. Oliveira; P. M. M. Correia; H. Schindler; A. L. Ferreira; C. M. B. Monteiro; J. M. F. dos Santos; S. Biagi; R. Veenhof; J. F. C. A. Veloso

2012-06-08T23:59:59.000Z

151

Quasi-monoenergetic protons accelerated by laser radiation pressure and shocks in thin gaseous targets  

Science Conference Proceedings (OSTI)

Recent experiments and simulations have demonstrated effective CO{sub 2} laser acceleration of quasi-monoenergetic protons from thick gaseous hydrogen target (of thickness tens of laser wavelengths) via hole boring and shock accelerations. We present here an alternative novel acceleration scheme by combining laser radiation pressure acceleration with shock acceleration of protons in a thin gaseous target of thickness several laser wavelengths. The laser pushes the thin gaseous plasma forward while compressing it with protons trapped in it. We demonstrated the combined acceleration with two-dimensional particle-in-cell simulation and obtained quasi-monoenergetic protons {approx}44 MeV in a gas target of thickness twice of the laser wavelength irradiated by circularly polarized CO{sub 2} laser with normalized laser amplitude a{sub 0}=10.

He Minqing; Shao Xi; Liu Chuansheng; Liu Tungchang; Su Jaojang; Dudnikova, Galina; Sagdeev, Roald Z. [East-West Space Science Center, University of Maryland, College Park, Maryland 20742 (United States); Sheng Zhengming [Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China); Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190 (China)

2012-07-15T23:59:59.000Z

152

Oak Ridge National Lebroatory Liquid&Gaseous Waste Treatment System Strategic Plan  

SciTech Connect

Excellence in Laboratory operations is one of the three key goals of the Oak Ridge National Laboratory (ORNL) Agenda. That goal will be met through comprehensive upgrades of facilities and operational approaches over the next few years. Many of ORNL's physical facilities, including the liquid and gaseous waste collection and treatment systems, are quite old, and are reaching the end of their safe operating life. The condition of research facilities and supporting infrastructure, including the waste handling facilities, is a key environmental, safety and health (ES&H) concern. The existing infrastructure will add considerably to the overhead costs of research due to increased maintenance and operating costs as these facilities continue to age. The Liquid Gaseous Waste Treatment System (LGWTS) Reengineering Project is a UT-Battelle, LLC (UT-B) Operations Improvement Program (OIP) project that was undertaken to develop a plan for upgrading the ORNL liquid and gaseous waste systems to support ORNL's research mission.

Van Hoesen, S.D.

2003-09-09T23:59:59.000Z

153

Liquid and Gaseous Waste Operations Department annual operating report CY 1996  

SciTech Connect

This annual report summarizes operating activities dealing with the process waste system, the liquid low-level waste system, and the gaseous waste system. It also describes upgrade activities dealing with the process and liquid low-level waste systems, the cathodic protection system, a stack ventilation system, and configuration control. Maintenance activities are described dealing with nonradiological wastewater treatment plant, process waste treatment plant and collection system, liquid low-level waste system, and gaseous waste system. Miscellaneous activities include training, audits/reviews/tours, and environmental restoration support.

Maddox, J.J.; Scott, C.B.

1997-03-01T23:59:59.000Z

154

A Possible Anisotropy in Blackbody Radiation Viewed through Non-uniform Gaseous Matter  

E-Print Network (OSTI)

A non-local gauge symmetry of a complex scalar field, which can be trivially extended to spinor fields, was demonstrated in a recent paper (Mod.Phys.Lett. A13, 1265 (1998) ; hep-th/9902020). The corresponding covariant Lagrangian density yielded a new, non-local Quantum Electrodynamics. In this letter we show that as a consequence of this new QED, a blackbody radiation viewed through gaseous matter appears to show a slight deviation from the Planck formula, and propose an experimental test to check this effect. We also show that a non-uniformity in this gaseous matter distribution leads to an (apparent) spatial anisotropy in the blackbody radiation.

T K Rai Dastidar

1999-03-12T23:59:59.000Z

155

On-Line Measurement of Heat of Combustion of Gaseous Hydrocarbon Fuel Mixtures  

Science Conference Proceedings (OSTI)

A method for the on-line measurement of the heat of combustion of gaseous hydrocarbon fuel mixtures has been developed and tested. The method involves combustion of a test gas with a measured quantity of air to achieve a preset concentration of oxygen ...

Sprinkle Danny R.; Chaturvedi Sushil K.; Kheireddine Ali

1996-03-01T23:59:59.000Z

156

Environmental Restoration Site-Specific Plan for the Portsmouth Gaseous Diffusion Plant, FY 93  

Science Conference Proceedings (OSTI)

The purpose of this Site-Specific Plan (SSP) is to describe past, present, and future activities undertaken to implement Environmental Restoration and Waste Management goals at the Portsmouth Gaseous Diffusion Plant (PORTS). The SSP is presented in sections emphasizing Environmental Restoration description of activities, resources, and milestones.

Not Available

1993-01-15T23:59:59.000Z

157

Recovery of normally gaseous hydrocarbons from net excess hydrogen in a catalytic reforming process  

Science Conference Proceedings (OSTI)

A process is disclosed for the catalytic reforming of hydrocarbons in the presence of hydrogen, preferably to produce high quality gasoline boiling range products. An improved recovery of normally gaseous hydrocarbons from the net excess hydrogen is realized by chilling and contacting said hydrogen with a normally liquid hydrocarbon stream in a plural stage absorption zone at an elevated pressure.

Scheifele, C.A.

1982-06-08T23:59:59.000Z

158

Method of absorbing UF.sub.6 from gaseous mixtures in alkamine absorbents  

DOE Patents (OSTI)

A method of recovering uranium hexafluoride from gaseous mixtures employing as an absorbent a liquid composition at least one of the components of which is chosen from the group consisting of ethanolamine, diethanolamine, and 3-methyl-3-amino-propane-diol-1,2.

Lafferty, Robert H. (Oak Ridge, TN); Smiley, Seymour H. (Oak Ridge, TN); Radimer, Kenneth J. (Little Falls, NJ)

1976-04-06T23:59:59.000Z

159

Long-range global warming impact of gaseous diffusion plant operation  

SciTech Connect

The DOE gaseous diffusion plant complex makes extensive use of CFC-114 as a primary coolant. As this material is on the Montreal Protocol list of materials scheduled for production curtailment, a substitute must be found. In addition to physical cooling properties, the gaseous diffusion application imposes the unique requirement of chemical inertness to fluorinating agents. This has narrowed the selection of a near-term substitute to two fully fluorinated material, FC-318 and FC-3110, which are likely to be strong, long-lived greenhouse gases. In this document, calculations are presented showing, for a number of plausible scenarios of diffusion plant operation and coolant replacement strategy, the future course of coolant use, greenhouse gas emissions (including coolant and power-related indirect CO{sub 2} emissions), and the consequent global temperature impacts of these scenarios.

Trowbridge, L.D.

1992-09-01T23:59:59.000Z

160

Proposed On-Site Waste Disposal Facility (OSWDF) at the Portsmouth Gaseous Diffusion Plant  

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

OH OH EM Project: On-Site Disposal Facility ETR Report Date: February 2008 ETR-12 United States Department of Energy Office of Environmental Management (DOE-EM) External Technical Review of the Proposed On-Site Waste Disposal Facility (OSWDF) at the Portsmouth Gaseous Diffusion Plant Why DOE-EM Did This Review The On-Site Waste Disposal Facility (OSWDF) is proposed for long-term containment of contaminated materials from the planned Decontamination and Decommissioning (D&D) activities at the Portsmouth Gaseous Diffusion Plant. Acceptable performance of the proposed OSWDF will depend on interactions between engineered landfill features and operations methods that recognize the unique characteristics of the waste stream and site-

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Portsmouth Gaseous Diffusion Plant Director's Final Findings and Orders, October 4, 1995 Summary  

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

Portsmouth Gaseous Diffusion Plant Director's Final Portsmouth Gaseous Diffusion Plant Director's Final Findings and Orders, October 4, 1995 State Ohio Agreement Type Federal Facility Agreement Legal Driver(s) FFCAct Scope Summary Agreement between the Ohio EPA and DOE approving the STP and setting waste treatment milestones Parties DOE; Ohio Department of Environmental Protection Date 10/4/1995 SCOPE * Approve the Compliance Plan Volume of the amended PSTP submitted to Ohio EPA on October 2, 1995, hereafter referred to as "approved STP." * Set forth guidelines for storage and treatment of mixed wastes at the Facility which are not being stored in accordance with the LDR requirements of OAC rule 3745-59- 50. * Establish milestones and target dates for approved STP. ESTABLISHING MILESTONES

162

Summary - Proposed On-Site Disposal Facility (OSDF) at the Paducah Gaseous Diffusion Plant  

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

Paducah, KY Paducah, KY EM Project: On-Site Disposal Facility ETR Report Date: August 2008 ETR-16 United States Department of Energy Office of Environmental Management (DOE-EM) External Technical Review of the Proposed On-Site Disposal Facility(OSDF) at the Paducah Gaseous Diffusion Plant Why DOE-EM Did This Review The Paducah Gaseous Diffusion Plant (PGDP) is an active uranium enrichment facility that was placed on the National Priorities List. DOE is required to remediate the PGDP in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). DOE is evaluating alternatives to dispose of waste generated from the remedial activities at the PGDP. One option is to construct an on-site disposal facility (OSDF) meeting the CERCLA requirements.

163

Process and system for removing sulfur from sulfur-containing gaseous streams  

DOE Patents (OSTI)

A multi-stage UCSRP process and system for removal of sulfur from a gaseous stream in which the gaseous stream, which contains a first amount of H.sub.2S, is provided to a first stage UCSRP reactor vessel operating in an excess SO.sub.2 mode at a first amount of SO.sub.2, producing an effluent gas having a reduced amount of SO.sub.2, and in which the effluent gas is provided to a second stage UCSRP reactor vessel operating in an excess H.sub.2S mode, producing a product gas having an amount of H.sub.2S less than said first amount of H.sub.2S.

Basu, Arunabha (Aurora, IL); Meyer, Howard S. (Hoffman Estates, IL); Lynn, Scott (Pleasant Hill, CA); Leppin, Dennis (Chicago, IL); Wangerow, James R. (Medinah, IL)

2012-08-14T23:59:59.000Z

164

Nuclear safety procedure upgrade project at USEC/MMUS gaseous diffusion plants  

SciTech Connect

Martin Marietta Utility Services has embarked on a program to upgrade procedures at both of its Gaseous Diffusion Plant sites. The transition from a U.S. Department of Energy government-operated facility to U.S. Nuclear Regulatory Commission (NRC) regulated has necessitated a complete upgrade of plant operating procedures and practices incorporating human factors as well as a philosophy change in their use. This program is designed to meet the requirements of the newly written 10CFR76, {open_quotes}The Certification of Gaseous Diffusion Plants,{close_quotes} and aid in progression toward NRC certification. A procedures upgrade will help ensure increased nuclear safety, enhance plant operation, and eliminate personnel procedure errors/occurrences.

Kocsis, F.J. III

1994-12-31T23:59:59.000Z

165

D&D of the French High Enrichment Gaseous Diffusion Plant  

SciTech Connect

This paper describes the D&D program that is being implemented at France's High Enrichment Gaseous Diffusion Plant, which was designed to supply France's Military with Highly Enriched Uranium. This plant was definitively shut down in June 1996, following French President Jacques Chirac's decision to end production of Highly Enriched Uranium and dismantle the corresponding facilities.

BEHAR, Christophe; GUIBERTEAU, Philippe; DUPERRET, Bernard; TAUZIN, Claude

2003-02-27T23:59:59.000Z

166

Environmental Restoration Site-Specific Plan for the Paducah Gaseous Diffusion Plant, FY 93  

Science Conference Proceedings (OSTI)

This report provides an overview of the major Environmental Restoration (ER) concerns at Paducah Gaseous Diffusion Plant (PGDP). The identified solid waste management units at PGDP are listed. In the Department of Energy (DOE) Five Year Plan development process, one or more waste management units are addressed in a series of activity data sheets (ADSs) which identify planned scope, schedule, and cost objectives that are representative of the current state of planned technical development for individual or multiple sites.

Not Available

1993-01-15T23:59:59.000Z

167

Method and apparatus for the selective separation of gaseous coal gasification products by pressure swing adsorption  

DOE Patents (OSTI)

Bulk separation of the gaseous components of multi-component gases provided by the gasification of coal including hydrogen, carbon monoxide, methane, and acid gases (carbon dioxide plus hydrogen sulfide) are selectively adsorbed by a pressure swing adsorption technique using activated carbon zeolite or a combination thereof as the adsorbent. By charging a column containing the adsorbent with a gas mixture and pressurizing the column to a pressure sufficient to cause the adsorption of the gases and then reducing the partial pressure of the contents of the column, the gases are selectively and sequentially desorbed. Hydrogen, the least absorbable gas of the gaseous mixture, is the first gas to be desorbed and is removed from the column in a co-current direction followed by the carbon monoxide, hydrogen and methane. With the pressure in the column reduced to about atmospheric pressure the column is evacuated in a countercurrent direction to remove the acid gases from the column. The present invention is particularly advantageous as a producer of high purity hydrogen from gaseous products of coal gasification and as an acid gas scrubber. 2 figs., 2 tabs.

Ghate, M.R.; Yang, R.T.

1985-10-03T23:59:59.000Z

168

Method and apparatus for the selective separation of gaseous coal gasification products by pressure swing adsorption  

DOE Patents (OSTI)

Bulk separation of the gaseous components of multi-component gases provided by the gasification of coal including hydrogen, carbon monoxide, methane, and acid gases (carbon dioxide plus hydrogen sulfide) are selectively adsorbed by a pressure swing adsorption technique using activated carbon, zeolite or a combination thereof as the adsorbent. By charging a column containing the adsorbent with a gas mixture and pressurizing the column to a pressure sufficient to cause the adsorption of the gases and then reducing the partial pressure of the contents of the column, the gases are selectively and sequentially desorbed. Hydrogen, the least absorbable gas of the gaseous mixture, is the first gas to be desorbed and is removed from the column in a co-current direction followed by the carbon monoxide, hydrogen and methane. With the pressure in the column reduced to about atmospheric pressure the column is evacuated in a countercurrent direction to remove the acid gases from the column. The present invention is particularly advantageous as a producer of high parity hydrogen from gaseous products of coal gasification and as an acid gas scrubber.

Ghate, Madhav R. (Morgantown, WV); Yang, Ralph T. (Williamsville, NY)

1987-01-01T23:59:59.000Z

169

Environmental effects of the construction and operation of a gaseous diffusion plant  

SciTech Connect

The impacts upon the environment resulting from construction, stert-up, and operation of a gaseous dfffusion plant are described. Some of the impacts are typical regardless of location of the plant. Others are atypical and depend upon location; those are presented, by way of example, as they occur at the Portsmouth Gaseous Diffusion Plant. The various environmental contaminants that may be produced in the operating plant are described. The concentrations of those contaminants are stated; and the adverse biological effects of pertinent conteminants are elucidated. UF/sup 6/ may be enriched in the Portsmouth Gaseous Wffusion Plant to almost any /sup 235/U concentration desired. The environmental impact of the plant varies somewhat according to /sup 235/U concentrations. However, commercial plants are not expected to enrich /sup 235/U in concentrations greater than 4%. for this reason, environmental effects due to Portsmouth operations within that range are emphasized. The study revealed that present discharges from the plants generally have no detrimental effects upon the environment. (auth)

1973-07-26T23:59:59.000Z

170

Oak Ridge National Lebroatory Liquid&Gaseous Waste Treatment System Strategic Plan  

SciTech Connect

Excellence in Laboratory operations is one of the three key goals of the Oak Ridge National Laboratory (ORNL) Agenda. That goal will be met through comprehensive upgrades of facilities and operational approaches over the next few years. Many of ORNL's physical facilities, including the liquid and gaseous waste collection and treatment systems, are quite old, and are reaching the end of their safe operating life. The condition of research facilities and supporting infrastructure, including the waste handling facilities, is a key environmental, safety and health (ES&H) concern. The existing infrastructure will add considerably to the overhead costs of research due to increased maintenance and operating costs as these facilities continue to age. The Liquid Gaseous Waste Treatment System (LGWTS) Reengineering Project is a UT-Battelle, LLC (UT-B) Operations Improvement Program (OIP) project that was undertaken to develop a plan for upgrading the ORNL liquid and gaseous waste systems to support ORNL's research mission.

Van Hoesen, S.D.

2003-09-09T23:59:59.000Z

171

The Use of New Parameterizations for Gaseous Absorption in the CLIRAD-SW Solar Radiation Code for Models  

Science Conference Proceedings (OSTI)

The new gaseous absorption parameterizations are incorporated in the CLIRAD-SW solar radiation code for models, openly distributed for the scientific community. In the new parameterizations, the magnitude of absorption coefficients in each ...

T. A. Tarasova; B. A. Fomin

2007-06-01T23:59:59.000Z

172

Joint Test Plan to Identify the Gaseous By-Products of CH3I Loading on AgZ  

SciTech Connect

The objective of this test plan is to describe research to determine the gaseous by-products of the adsorption of CH3I on hydrogen reduced silver exchanged mordenite (AgZ).

R. T. Jubin; N. R. Soelberg; D. M. Strachan; T. M. Nenoff; B. B. Spencer

2012-12-01T23:59:59.000Z

173

Review of the Portsmouth Gaseous Diffusion Plant Integrated Safety Management System Phase I Verification Review, April 2013  

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

Portsmouth Gaseous Diffusion Plant Portsmouth Gaseous Diffusion Plant Integrated Safety Management System Phase I Verification Review April 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose ................................................................................................................................................. 1 2.0 Scope.................................................................................................................................................... 1 3.0 Background........................................................................................................................................... 1 4.0 Methodology......................................................................................................................................... 1

174

Review of the Portsmouth Gaseous Diffusion Plant Integrated Safety Management System Phase I Verification Review, April 2013  

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

Portsmouth Gaseous Diffusion Plant Portsmouth Gaseous Diffusion Plant Integrated Safety Management System Phase I Verification Review April 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose ................................................................................................................................................. 1 2.0 Scope.................................................................................................................................................... 1 3.0 Background........................................................................................................................................... 1 4.0 Methodology......................................................................................................................................... 1

175

Gas separation process using membranes with permeate sweep to remove CO.sub.2 from gaseous fuel combustion exhaust  

DOE Patents (OSTI)

A gas separation process for treating exhaust gases from the combustion of gaseous fuels, and gaseous fuel combustion processes including such gas separation. The invention involves routing a first portion of the exhaust stream to a carbon dioxide capture step, while simultaneously flowing a second portion of the exhaust gas stream across the feed side of a membrane, flowing a sweep gas stream, usually air, across the permeate side, then passing the permeate/sweep gas back to the combustor.

Wijmans Johannes G. (Menlo Park, CA); Merkel, Timothy C. (Menlo Park, CA); Baker, Richard W. (Palo Alto, CA)

2012-05-15T23:59:59.000Z

176

MICROSTRUCTURE AND MECHANICAL PROPERTY PERFORMANCE OF COMMERCIAL GRADE API PIPELINE STEELS IN HIGH PRESSURE GASEOUS HYDROGEN  

Science Conference Proceedings (OSTI)

The continued growth of the world s developing countries has placed an ever increasing demand on traditional fossil fuel energy sources. This development has lead to increasing research and development of alternative energy sources. Hydrogen gas is one of the potential alternative energy sources under development. Currently the most economical method of transporting large quantities of hydrogen gas is through steel pipelines. It is well known that hydrogen embrittlement has the potential to degrade steel s mechanical properties when hydrogen migrates into the steel matrix. Consequently, the current pipeline infrastructure used in hydrogen transport is typically operated in a conservative fashion. This operational practice is not conducive to economical movement of significant volumes of hydrogen gas as an alternative to fossil fuels. The degradation of the mechanical properties of steels in hydrogen service is known to depend on the microstructure of the steel. Understanding the levels of mechanical property degradation of a given microstructure when exposed to hydrogen gas under pressure can be used to evaluate the suitability of the existing pipeline infrastructure for hydrogen service and guide alloy and microstructure design for new hydrogen pipeline infrastructure. To this end, the 2 Copyright 2010 by ASME microstructures of relevant steels and their mechanical properties in relevant gaseous hydrogen environments must be fully characterized to establish suitability for transporting hydrogen. A project to evaluate four commercially available pipeline steels alloy/microstructure performance in the presences of gaseous hydrogen has been funded by the US Department of Energy along with the private sector. The microstructures of four pipeline steels were characterized and then tensile testing was conducted in gaseous hydrogen and helium at pressures of 800, 1600 and 3000 psi. Based on measurements of reduction of area, two of the four steels that performed the best across the pressure range were selected for evaluation of fracture and fatigue performance in gaseous hydrogen at 800 and 3000 psi. This paper will describe the work performed on four commercially available pipeline steels in the presence of gaseous hydrogen at pressures relevant for transport in pipelines. Microstructures and mechanical property performances will be compared. In addition, recommendations for future work related to gaining a better understanding of steel pipeline performance in hydrogen service will be discussed.

Stalheim, Mr. Douglas [DGS Metallurgical Solutions Inc; Boggess, Todd [Secat; San Marchi, Chris [Sandia National Laboratories (SNL); Jansto, Steven [Reference Metals Company; Somerday, Dr. B [Sandia National Laboratories (SNL); Muralidharan, Govindarajan [ORNL; Sofronis, Prof. Petros [University of Illinois

2010-01-01T23:59:59.000Z

177

Measuring the Effect of Fuel Chemical Structure on Particulate and Gaseous Emissions using Isotope Tracing  

DOE Green Energy (OSTI)

Using accelerator mass spectrometry (AMS), a technique initially developed for radiocarbon dating and recently applied to internal combustion engines, carbon atoms within specific fuel molecules can be labeled and followed in particulate or gaseous emissions. In addition to examining the effect of fuel chemical structure on emissions, the specific source of carbon for PM can be identified if an isotope label exists in the appropriate fuel source. Existing work has focused on diesel engines, but the samples (soot collected on quartz filters or combustion gases captured in bombs or bags) are readily collected from large industrial combustors as well.

Buchholz, B A; Mueller, C J; Martin, G C; Upatnicks, A; Dibble, R W; Cheng, S

2003-09-11T23:59:59.000Z

178

Replacement of chlorofluorocarbons (CFCs) at the DOE gaseous diffusion plants: An assessment of global impacts  

SciTech Connect

The US Department of Energy (DOE) formerly operated two gaseous diffusion plants (GDPs) for enriching uranium and maintained a third shutdown GDP. These plants maintain a large inventory of dichlorotetrafluorethane (CFC-114), a cholorofluorocarbon (CFC), as a coolant. The paper evaluates the global impacts of four alternatives to modify GDP coolant system operations for a three-year period beginning in 1996. Interim modification of GDP coolant system operations has the potential to reduce stratospheric ozone depletion from GDP coolant releases while a permanent solution is studied.

Socolof, M.L.; Saylor, R.E.; McCold, L.N.

1994-06-01T23:59:59.000Z

179

High-temperature sorbent method for removal of sulfur containing gases from gaseous mixtures  

DOE Patents (OSTI)

A copper oxide-zinc oxide mixture is used as a sorbent for removing hydrogen sulfide and other sulfur containing gases at high temperatures from a gaseous fuel mixture. This high-temperature sorbent is especially useful for preparing fuel gases for high temperature fuel cells. The copper oxide is initially reduced in a preconditioning step to elemental copper and is present in a highly dispersed state throughout the zinc oxide which serves as a support as well as adding to the sulfur sorption capacity. The spent sorbent is regenerated by high-temperature treatment with an air fuel, air steam mixture followed by hydrogen reduction to remove and recover the sulfur.

Young, J.E.; Jalan, V.M.

1984-06-19T23:59:59.000Z

180

(2) Quantities and Prices of Animal Manure and Gaseous Fuels Generated:  

E-Print Network (OSTI)

In this context, we are defining animal manure as the excrement of livestock reared in agricultural operations as well as straw, sawdust, and other residues used as animal bedding. Gaseous fuels may be derived from municipal and industrial landfills (landfill gas) or from animal manure and solid biomass such as crop silage or the organic fraction of MSW (biogas). Both landfill gas and biogas are generated via anaerobic digestion, a multi-stage process whereby bacteria convert carbohydrates, fats, and proteins to methane (Evans 2001). EPA does not consider these materials to be wastes in themselves, when used as fuel, but rather materials derived from wastes.

unknown authors

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Liquefied Gaseous Fuels Safety and Environmental Control Assessment Program: second status report  

SciTech Connect

This document is arranged in three volumes and reports on progress in the Liquefied Gaseous Fuels (LGF) Safety and Environmental Control Assessment Program made in fiscal Year (FY)-1979 and early FY-1980. Volume 3 contains reports from 6 government contractors on LPG, anhydrous ammonia, and hydrogen energy systems. Report subjects include: simultaneous boiling and spreading of liquefied petroleum gas (LPG) on water; LPG safety research; state-of-the-art of release prevention and control technology in the LPG industry; ammonia: an introductory assessment of safety and environmental control information; ammonia as a fuel, and hydrogen safety and environmental control assessment.

1980-10-01T23:59:59.000Z

182

2013 GASEOUS IONS GORDON RESEARCH CONFERENCE, FEBRUARY 24 - MARCH 1, 2013  

Science Conference Proceedings (OSTI)

The Gaseous Ions: Structures, Energetics and Reactions Gordon Research Conference will focus on ions and their interactions with molecules, surfaces, electrons, and light. The long-standing goal of our community is to develop new strategies for capturing complex molecular architectures as gas phase ions where they can be isolated, characterized and manipulated with great sensitivity. Emergent areas of interest include catalytic mechanisms, cryogenic processing of ions extracted from solution, ion fragmentation mechanisms, and new methods for ion formation and structural characterization. The conference will cover theoretical and experimental advances on systems ranging from model studies at the molecular scale to preparation of nanomaterials and characterization of large biological molecules.

Williams, Evan

2013-03-01T23:59:59.000Z

183

Separation of normally gaseous hydrocarbons from a catalytic reforming effluent and recovery of purified hydrogen  

Science Conference Proceedings (OSTI)

A process for the catalytic reforming of a hydrocarbonaceous feedstock, preferably to produce high quality gasoline boiling range products, is disclosed. Relatively impure hydrogen is separated from the reforming zone effluent, compressed, and recontacted with at least a portion of the liquid reformate product to provide relatively pure hydrogen, a portion of which is recycled to the reforming zone. The balance is further compressed and recontacted with at least a portion of the liquid reformate product to provide an improved recovery of normally gaseous hydrocarbons as well as an improved recovery of purified hydrogen at a pressure suitable for use in the relatively high pressure hydrotreating of sulfur-containing feedstocks.

Coste, A.C.

1982-06-08T23:59:59.000Z

184

High-temperature sorbent method for removal of sulfur containing gases from gaseous mixtures  

DOE Patents (OSTI)

A copper oxide-zinc oxide mixture is used as a sorbent for removing hydrogen sulfide and other sulfur containing gases at high temperatures from a gaseous fuel mixture. This high-temperature sorbent is especially useful for preparing fuel gases for high temperature fuel cells. The copper oxide is initially reduced in a preconditioning step to elemental copper and is present in a highly dispersed state throughout the zinc oxide which serves as a support as well as adding to the sulfur sorption capacity. The spent sorbent is regenerated by high-temperature treatment with an air fuel, air steam mixture followed by hydrogen reduction to remove and recover the sulfur.

Young, John E. (Woodridge, IL); Jalan, Vinod M. (Concord, MA)

1984-01-01T23:59:59.000Z

185

Linking the gaseous and the condensed phases of matter: The slow electron and its interactions  

SciTech Connect

The interfacing of the gaseous and the condensed phases of matter as effected by interphase and cluster studies on the behavior of key reactions involving slow electrons either as reacting initial particles or as products of the reactions themselves is discussed. Emphasis is placed on the measurement of both the cross sections and the energetics involved, although most of the available information to date is on the latter. The discussion is selectively focussed on electron scattering (especially the role of negative ion states in gases, clusters, and dense matter), ionization, electron attachment and photodetachment. The dominant role of the electric polarization of the medium is emphasized.

Christophorou, L.G.

1993-12-31T23:59:59.000Z

186

Heat-pipe effect on the transport of gaseous radionuclides released from a nuclear waste container  

SciTech Connect

When an unsaturated porous medium is subjected to a temperature gradient and the temperature is sufficiently high, vadose water is heated and vaporizes. Vapor flows under its pressure gradient towards colder regions where it condenses. Vaporization and condensation produce a liquid saturation gradient, creating a capillary pressure gradient inside the porous medium. Condensate flows towards the hot end under the influence of a capillary pressure gradient. This is a heat pipe in an unsaturated porous medium. We study analytically the transport of gaseous species released from a spent-fuel waste package, as affected by a time-dependent heat pipe in an unsaturated rock. For parameter values typical of a potential repository in partially saturated fractured tuff at Yucca Mountain, we found that a heat pipe develops shortly after waste is buried, and the heat-pipe`s spatial extent is time-dependent. Water vapor movements produced by the heat pipe can significantly affect the migration of gaseous radionuclides. 12 refs., 6 figs., 1 tab.

Zhou, W.; Chambre, P.L.; Pigford, T.H.; Lee, W.W.L.

1990-11-01T23:59:59.000Z

187

Project plan for the background soils project for the Paducah Gaseous Diffusion Plant, Paducah, Kentucky  

SciTech Connect

The Background Soils Project for the Paducah Gaseous Diffusion Plant (BSPP) will determine the background concentration levels of selected naturally occurring metals, other inorganics, and radionuclides in soils from uncontaminated areas in proximity to the Paducah Gaseous Diffusion Plant (PGDP) in Paducah, Kentucky. The data will be used for comparison with characterization and compliance data for soils, with significant differences being indicative of contamination. All data collected as part of this project will be in addition to other background databases established for the PGDP. The BSPP will address the variability of surface and near-surface concentration levels with respect to (1) soil taxonomical types (series) and (2) soil sampling depths within a specific soil profile. The BSPP will also address the variability of concentration levels in deeper geologic formations by collecting samples of geologic materials. The BSPP will establish a database, with recommendations on how to use the data for contaminated site assessment, and provide data to estimate the potential human and health and ecological risk associated with background level concentrations of potentially hazardous constituents. BSPP data will be used or applied as follows.

NONE

1995-09-01T23:59:59.000Z

188

The Radiochemical Analysis of Gaseous Samples (RAGS) Apparatus for Nuclear Diagnostics at the National Ignition Facility  

SciTech Connect

The RAGS (Radiochemical Analysis of Gaseous Samples) diagnostic apparatus was recently installed at the National Ignition Facility. Following a NIF shot, RAGS is used to pump the gas load from the NIF chamber for purification and isolation of the noble gases. After collection, the activated gaseous species are counted via gamma spectroscopy for measurement of the capsule areal density and fuel-ablator mix. Collection efficiency was determined by injecting a known amount of {sup 135}Xe into the NIF chamber, which was then collected with RAGS. Commissioning was performed with an exploding pusher capsule filled with isotopically enriched {sup 124}Xe and {sup 126}Xe added to the DT gas fill. Activated xenon species were recovered post-shot and counted via gamma spectroscopy. Results from the collection and commissioning tests are presented. The performance of RAGS allows us to establish a noble gas collection method for measurement of noble gas species produced via neutron and charged particle reactions in a NIF capsule.

Shaughnessy, D A; Velsko, C A; Jedlovec, D R; Yeamans, C B; Moody, K J; Tereshatov, E; Stoeffl, W; Riddle, A

2012-05-11T23:59:59.000Z

189

Anisotropic gaseous models of tidally limited star clusters -- comparison with other methods  

E-Print Network (OSTI)

We present new models of the evolution and dissolution of star clusters evolving under the combined influence of internal relaxation and external tidal fields, using the anisotropic gaseous model based on the Fokker-Planck approximation, and a new escaper loss cone model. This model borrows ideas from loss cones of stellar distributions near massive black holes, and describes physical processes related to escaping stars by a simple model based on two timescales and a diffusion process. We compare our results with those of direct $N$-body models and of direct numerical solutions of the orbit-averaged Fokker-Planck equation. For this comparative study we limit ourselves to idealized single point mass star clusters, in order to present a detailed study of the physical processes determining the rate of mass loss, core collapse and other features of the system's evolution. With the positive results of our study the path is now open in the future to use the computationally efficient gaseous models for future studies with more realism (mass spectrum, stellar evolution).

R. Spurzem; M. Giersz; K. Takahashi; A. Ernst

2004-12-30T23:59:59.000Z

190

Liquefied Gaseous Fuels Safety and Environmental Control Assessment Program: second status report  

DOE Green Energy (OSTI)

The Assistant Secretary for Environment has responsibility for identifying, characterizing, and ameliorating the environmental, health, and safety issues and public concerns associated with commercial operation of specific energy systems. The need for developing a safety and environmental control assessment for liquefied gaseous fuels was identified by the Environmental and Safety Engineering Division as a result of discussions with various governmental, industry, and academic persons having expertise with respect to the particular materials involved: liquefied natural gas, liquefied petroleum gas, hydrogen, and anhydrous ammonia. This document is arranged in three volumes and reports on progress in the Liquefied Gaseous Fuels (LGF) Safety and Environmental Control Assessment Program made in Fiscal Year (FY)-1979 and early FY-1980. Volume 1 (Executive Summary) describes the background, purpose and organization of the LGF Program and contains summaries of the 25 reports presented in Volumes 2 and 3. Annotated bibliographies on Liquefied Natural Gas (LNG) Safety and Environmental Control Research and on Fire Safety and Hazards of Liquefied Petroleum Gas (LPG) are included in Volume 1.

Not Available

1980-10-01T23:59:59.000Z

191

Mixture of micronized coal powder with gaseous fuels for use in internal combustion engines  

DOE Patents (OSTI)

An improved fuel mixture for use in internal combustion engines is described. This fuel is an intimate mixture of micronized coal, having an average particle size of less than 100 microns, with a gaseous fuel selected from natural gas and coal-derived. The coal can be present from more than 0 percent to less than 100 percent, with generally the lower percentages being preferred. The addition of the coal to the gaseous fuel improves engine efficiency and power rating, and also decreases peak engine pressure allowing for higher compression ratios. An increase in the amount of the coal increases the oxides of sulfur while reducing the oxides of nitrogen in the exhaust. An increase in the amount of gas, on the other hand, increases the oxides of nitrogen but lowers oxides of sulfur. Accordingly, a preferred mixture will depend upon a particular application for the coal/gas fuel and thereby increases user fuel flexibility considerations. Modeling of the fuel mixture for use in a diesel engine is described. 3 figs., 3 tabs.

Carpenter, L.K.

1990-01-03T23:59:59.000Z

192

Indirect NMR detection of 235U in gaseous uranium hexafluoride National Center for Physics, P.O. Box MG-6, Bucharest, Romania  

E-Print Network (OSTI)

L-493 Indirect NMR detection of 235U in gaseous uranium hexafluoride I. Ursu National Center- vation of235 U NMR signal in liquid UF6 at B = 11.747 T has been recently reported [7]. The aim of this Letter is to investigate the effect of the 23 5U enrichment on the 19F NMR spectra in gaseous UF6. Using

Paris-Sud XI, Université de

193

Apparatus for recovering gaseous hydrocarbons from hydrocarbon-containing solid hydrates  

DOE Patents (OSTI)

A method and apparatus are provided for producing gaseous hydrocarbons from formations comprising solid hydrocarbon hydrates located under either a body of land or a body of water. The vast natural resources of such hydrocarbon hydrates can thus now be economically mined. Relatively warm brine or water is brought down from an elevation above that of the hydrates through a portion of the apparatus and passes in contact with the hydrates, thus melting them. The liquid then continues up another portion of the apparatus, carrying entrained hydrocarbon vapors in the form of bubbles, which can easily be separated from the liquid. After a short startup procedure, the process and apparatus are substantially self-powered.

Elliott, Guy R. B. (Los Alamos, NM); Barraclough, Bruce L. (Santa Fe, NM); Vanderborgh, Nicholas E. (Los Alamos, NM)

1984-01-01T23:59:59.000Z

194

Apparatus and method for operating internal combustion engines from variable mixtures of gaseous fuels  

DOE Patents (OSTI)

An apparatus and method for utilizing any arbitrary mixture ratio of multiple fuel gases having differing combustion characteristics, such as natural gas and hydrogen gas, within an internal combustion engine. The gaseous fuel composition ratio is first sensed, such as by thermal conductivity, infrared signature, sound propagation speed, or equivalent mixture differentiation mechanisms and combinations thereof which are utilized as input(s) to a "multiple map" engine control module which modulates selected operating parameters of the engine, such as fuel injection and ignition timing, in response to the proportions of fuel gases available so that the engine operates correctly and at high efficiency irrespective of the gas mixture ratio being utilized. As a result, an engine configured according to the teachings of the present invention may be fueled from at least two different fuel sources without admixing constraints.

Heffel, James W. (Lake Matthews, CA); Scott, Paul B. (Northridge, CA); Park, Chan Seung (Yorba Linda, CA)

2011-11-01T23:59:59.000Z

195

Proposed On-Site Disposal Facility (OSDF) at the Paducah Gaseous Diffusion Plant  

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

i i TABLE OF CONTENTS 1. INTRODUCTION 1 2. LINE OF INQUIRY NO. 1 - Future Uses of the Subtitle D Landfill 2 3. LINE OF INQUIRY NO. 2 - OSDF Siting in a Brownfield Area 3 4. LINE OF INQUIRY NO. 3 - Seismic Issues 4 5. LINE OF INQUIRY NO. 4 - Post-Closure Public Use of the OSDF 5 6. LINE OF INQUIRY NO. 5 - Public Communication Plan 7 7. LINE OF INQUIRY NO. 6 - Baseline Schedule 8 8. RECOMMENDATIONS 8 9. ACKNOWLEDGEMENT 10 10. REFERENCES 10 APPENDIX 11 1 1. INTRODUCTION The Paducah Gaseous Diffusion Plant (PGDP) is an active uranium enrichment facility that is owned by the US Department of Energy (DOE). Uranium enrichment facilities at PGDP are leased to and operated by the United States Enrichment Corporation. In 1994, PGDP was placed

196

Lessons Learned from Practical Field Experience with High Pressure Gaseous Fuels  

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

5/2010 5/2010 www.cleanvehicle.org 1 Lessons Learned from Practical Field Experience with High Pressure Gaseous Fuels DOE - DOT CNG - H 2 Workshop December 10, 2009 Douglas Horne, PE - CVEF President Rob Adams, P.Eng. - Marathon Technical Services The Facts  NGVs have been used in North America for over 30 years  Codes and Standards (C&S) provide opportunity for safe reliable operation of NGVs  C&S evolve with new technology and field experience  People make mistakes, continuous training is critical for safe operations  Cylinders have a limited life -track your cylinders! 2/25/2010 www.cleanvehicle.org 2 Incidents in North America  Since 1984 CVEF has recorded 97 incidents of which 67 involved CNG vehicles - 37 incidents involve either a CNG leak (15) or a

197

Assessment of methods for analyzing gaseous mixtures of hydrogen isotopes and helium  

DOE Green Energy (OSTI)

Mass spectrographic methods have served well in the past to analyze gaseous mixtures of the hydrogen isotopes. Alternate methods of analyses are reviewed which offer wider ranges and variety of isotopic determinations. This report describes possible improvements of the mass spectrographic determinations, gas chromatography, anti-Stokes Raman spectroscopy, microwave-induced optical emission spectroscopy, and methods of measuring tritium using radiation detection devices. Precision, accuracy, limitations, and costs are included for some of the methods mentioned. Costs range from $70,000 for the anti-Stokes Raman spectroscopy equipment, which can determine hydrogen isotopes but not helium, to less than $10,000 for the gas chromatographic equipment, which can determine hydrogen isotopes and helium with precision and accuracy comparable to those of the mass spectrometer.

Attalla, A.; Bishop, C.T.; Bohl, D.R.; Buxton, T.L.; Sprague, R.E.; Warner, D.K.

1976-10-20T23:59:59.000Z

198

Preliminary assessment of the gaseous fuels aftermarket conversion industry. Final report  

Science Conference Proceedings (OSTI)

The purpose of the report is to provide information to be used in assessing the potential impacts of EPA's proposed Gaseous Fuels and Clean Fuel Fleet rulemakings on the aftermarket conversion industry. Therefore, the report will focus on issues germane to determining these impacts (such as financial profiles of companies involved, future trends in industry development and sales, and costs of complying with conversion requirements) rather than assessing the viability of current technologies or the emissions benefits of alternative fuels. Moreover, the report focuses on conversions to CNG and LPG as conversions to these fuels are most viable at this time, even though EPA's proposed conversion regulations could potentially apply to any fuel (e.g., liquid natural gas).

Not Available

1992-09-28T23:59:59.000Z

199

Method and apparatus for removal of gaseous, liquid and particulate contaminants from molten metals  

DOE Patents (OSTI)

Method and apparatus for removal of nonelectrically-conducting gaseous, liquid, and particulate contaminants from molten metal compositions by applying a force thereto. The force (commonly referred to as the Lorentz Force) exerted by simultaneous application of an electric field and a magnetic field on a molten conductor causes an increase, in the same direction as the force, in the apparent specific gravity thereof, but does not affect the nonconducting materials. This difference in apparent densities cause the nonconducting materials to "float" in the opposite direction from the Lorentz Force at a rapid rate. Means are further provided for removal of the contaminants and prevention of stirring due to rotational forces generated by the applied fields.

Hobson, David O. (Oak Ridge, TN); Alexeff, Igor (Oak Ridge, TN); Sikka, Vinod K. (Clinton, TN)

1988-01-01T23:59:59.000Z

200

Report on the biological monitoring program at Paducah Gaseous Diffusion Plant December 1990 to November 1992  

Science Conference Proceedings (OSTI)

On September 23, 1987, the Commonwealth of Kentucky Natural Resources and Environmental Protection Cabinet issued an Agreed Order that required the development of a Biological Monitoring Program (BMP) for the Paducah Gaseous Diffusion Plant (PGDP). Beginning in fall 1991, the Environmental Sciences Division (ESD) at Oak Ridge National Lab (ORNL) added data collection and report preparation to its responsibilities for the PGDP BMP. The BMP has been continued because it has proven to be extremely valuable in identifying those effluents with the potential for adversely affecting instream fauna, assessing the ecological health of receiving streams, guiding plans for remediation, and protecting human health. In September 1992, a renewed permit was issued which requires toxicity monitoring of continuous and intermittent outfalls on a quarterly basis. The BMP for PGDP consists of three major tasks: (1) effluent and ambient toxicity monitoring, (2) bioaccumulation studies, and (3) ecological surveys of stream communities. This report includes ESD/ORNL activities occurring from December 1990 to November 1992.

Kszos, L.A. [ed.

1994-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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.


201

Report on the Biological Monitoring Program at Paducah Gaseous Diffusion Plant December 1992--December 1993  

SciTech Connect

On September 24, 1987, the Commonwealth of Kentucky Natural Resources and Environmental Protection Cabinet issued an Agreed Order that required the development of a Biological Monitoring Program (BMP) for the Paducah Gaseous Diffusion Plant (PGDP). The goals of BMP are to demonstrate that the effluent limitations established for PGDP protect and maintain the use of Little Bayou and Big Bayou creeks for growth and propagation of fish and other aquatic life, characterize potential health and environmental impacts, document the effects of pollution abatement facilities on stream biota, and recommend any program improvements that would increase effluent treatability. The BMP for PGDP consists of three major tasks: effluent and ambient toxicity monitoring, bioaccumulation studies, and ecological surveys of stream communities (i.e., benthic macroinvertebrates and fish). This report includes ESD activities occurring from December 1992 to December 1993, although activities conducted outside this time period are included as appropriate.

Kszos, L.A.; Hinzman, R.L.; Peterson, M.J.; Ryon, M.G.; Smith, J.G.; Southworth, G.R.

1995-06-01T23:59:59.000Z

202

Method and apparatus for removal of gaseous, liquid and particulate contaminants from molten metals  

DOE Patents (OSTI)

Method and apparatus for removal of nonelectrically-conducting gaseous, liquid, and particulate contaminants from molten metal compositions by applying a force thereto. The force (commonly referred to as the Lorentz Force) exerted by simultaneous application of an electric field and a magnetic field on a molten conductor causes an increase, in the same direction as the force, in the apparent specific gravity thereof, but does not affect the nonconducting materials. This difference in apparent densities cause the nonconducting materials to ''float'' in the opposite direction from the Lorentz Force at a rapid rate. Means are further provided for removal of the contaminants and prevention of stirring due to rotational forces generated by the applied fields. 6 figs.

Hobson, D.O.; Alexeff, I.; Sikka, V.K.

1987-08-10T23:59:59.000Z

203

Liquefied gaseous fuels safety and environmental control assessment program: third status report  

Science Conference Proceedings (OSTI)

This Status Report contains contributions from all contractors currently participating in the DOE Liquefied Gaseous Fuels (LG) Safety and Environmental Control Assessment Program and is presented in two principal sections. Section I is an Executive Summary of work done by all program participants. Section II is a presentation of fourteen individual reports (A through N) on specific LGF Program activities. The emphasis of Section II is on research conducted by Lawrence Livermore National Laboratory (Reports A through M). Report N, an annotated bibliography of literature related to LNG safety and environmental control, was prepared by Pacific Northwest Laboratory (PNL) as part of its LGF Safety Studies Project. Other organizations who contributed to this Status Report are Aerojet Energy Conversion Company; Applied Technology Corporation; Arthur D. Little, Incorporated; C/sub v/ International, Incorporated; Institute of Gas Technology; and Massachusetts Institute of Technology. Separate abstracts have been prepared for Reports A through N for inclusion in the Energy Data Base.

Not Available

1982-03-01T23:59:59.000Z

204

GROW1: a crop growth model for assessing impacts of gaseous pollutants from geothermal technologies  

DOE Green Energy (OSTI)

A preliminary model of photosynthesis and growth of field crops was developed to assess the effects of gaseous pollutants, particularly airborne sulfur compounds, resulting from energy production from geothermal resources. The model simulates photosynthesis as a function of such variables as irradiance, CO/sub 2/ diffusion resistances, and internal biochemical processes. The model allocates the products of photosynthesis to structural (leaf, stem, root, and fruit) and storage compartments of the plant. The simulations encompass the entire growing season from germination to senescence. The model is described conceptually and mathematically and examples of model output are provided for various levels of pollutant stress. Also, future developments that would improve this preliminary model are outlined and its applications are discussed.

Kercher, J.R.

1977-03-17T23:59:59.000Z

205

Separation of normally gaseous hydrocarbons from a catalytic reforming effluent and recovery of purified hydrogen  

Science Conference Proceedings (OSTI)

A process for the catalytic reforming of a hydrocarbonaceous feedstock, preferably to produce high quality gasoline boiling range products, is disclosed. Relatively impure hydrogen is separated from the reforming zone effluent, compressed, and recontacted with at least a portion of the liquid reformate product to provide relatively pure hydrogen, a portion of which is recycled to the reforming zone. The balance is further compressed and recontacted with at least a portion of the liquid reformate product in a plural stage absorption zone to provide an improved recovery of normally gaseous hydrocarbons as well as an improved recovery of purified hydrogen at a pressure suitable, for example, the relatively high pressure hydrotreating of sulfur-containing feedstocks.

O'brien, D.E.

1982-06-08T23:59:59.000Z

206

Privatization of the gaseous diffusion plants and impacts on nuclear criticality safety administration  

SciTech Connect

The Energy Policy Act of 1992 created the United States Enrichment Corporation (USEC) on July 1, 1993. The USEC is a government-owned business that leases those Gaseous Diffusion Plant (GDP) facilities at the Portsmouth, Ohio, and Paducah, Kentucky, sites from the U.S. Department of Energy (DOE) that are required for enriching uranium. Lockheed Martin Utility Services is the operating contractor for the USEC-leased facilities. The DOE has retained use of, and regulation over, some facilities and areas at the Portsmouth and Paducah sites for managing legacy wastes and environmental restoration activities. The USEC is regulated by the DOE, but is currently changing to regulation under the U.S. Nuclear Regulatory Commission (NRC). The USEC is also preparing for privatization of the uranium enrichment enterprise. These changes have significantly affected the nuclear criticality safety (NCS) programs at the sites.

D`Aquila, D.M.; Holliday, R.T. [Lockheed Martin Utility Services, Inc., Piketon, OH (United States); Dean, J.C. [Lockheed Martin Utility Services, Inc., Paducah, KY (United States)

1996-12-31T23:59:59.000Z

207

Review of the Portsmouth Gaseous Diffusion Plant Work Planning and Control Activities Prior to Work Execution, January 2013  

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

Review of the Review of the Portsmouth Gaseous Diffusion Plant Work Planning and Control Activities Prior to Work Execution January 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose ................................................................................................................................................. 1 2.0 Scope.................................................................................................................................................... 1 3.0 Background........................................................................................................................................... 1

208

Analytical risk-based model of gaseous and liquid-phase radon transport in landfills with radium sources  

Science Conference Proceedings (OSTI)

An analytical model of gaseous and liquid-phase radon transport through soils is derived for environmental modeling of landfills containing uranium mill tailings or Ra-226 sources. Processes include radon diffusion in both the gas and liquid phases, ... Keywords: Landfill, Multiphase, Performance assessment, Probabilistic modeling, Radium, Radon, Transport

Clifford K. Ho

2008-09-01T23:59:59.000Z

209

Int. J. Environment and Pollution, Vol. 8, Nos. 3-6, 1997 727 Gaseous pollutant dispersion around urban-canopy  

E-Print Network (OSTI)

. Meroney, 1983: Gas dispersion near a cubical model building. Part I. Mean concentration measurements. JInt. J. Environment and Pollution, Vol. 8, Nos. 3-6, 1997 727 Gaseous pollutant dispersion around numerical predictions of atmospheric dispersion in the urban environment on sub-meso scales. Wind

Fedorovich, Evgeni

210

Tests of Micro-Pattern Gaseous Detectors for Active1 Target Time Projection Chambers in nuclear physics2  

E-Print Network (OSTI)

Tests of Micro-Pattern Gaseous Detectors for Active1 Target Time Projection Chambers in nuclear the gas used as the detection medium10 is also a target for nuclear reactions, have been used for a wide variety of11 nuclear physics applications since the eighties. Improvements in MPGD (Mi-12 cro Pattern

Recanati, Catherine

211

Separation and recovery of hydrogen and normally gaseous hydrocarbons from net excess hydrogen from a catalytic reforming process  

Science Conference Proceedings (OSTI)

A process is disclosed for the catalytic reforming of hydrocarbons in the presence of hydrogen, preferably to produce high quality gasoline boiling range products. An improved recovery of normally gaseous hydrocarbons from the net excess hydrogen is realized by chilling and contacting said hydrogen with a normally liquid hydrocarbon stream in a plural stage absorption zone at an elevated pressure.

Scheifele, C.A.

1982-06-08T23:59:59.000Z

212

TREATMENT OF GASEOUS EFFLUENTS ISSUED FROM RECYCLING A REVIEW OF THE CURRENT PRACTICES AND PROSPECTIVE IMPROVEMENTS  

Science Conference Proceedings (OSTI)

The objectives of gaseous waste management for the recycling of nuclear used fuel is to reduce by best practical means (ALARA) and below regulatory limits, the quantity of activity discharged to the environment. The industrial PUREX process recovers the fissile material U(VI) and Pu(IV) to re-use them for the fabrication of new fuel elements e.g. recycling plutonium as a Mixed Oxide (MOX) fuel or recycling uranium for new enrichment for Pressurized Water Reactor (PWR). Meanwhile the separation of the waste (activation and fission product) is performed as a function of their pollution in order to store and avoid any potential danger and release towards the biosphere. Raffinate, that remains after the extraction step and which contains mostly all fission products and minor actinides is vitrified, the glass package being stored temporarily at the recycling plant site. Hulls and end pieces coming from PWR recycled fuel are compacted by means of a press leading to a volume reduced to 1/5th of initial volume. An organic waste treatment step will recycle the solvent, mainly tri-butyl phosphate (TBP) and some of its hydrolysis and radiolytic degradation products such as dibutyl phosphate (HDPB) and monobutyl phosphate (H2MBP). Although most scientific and technological development work focused on high level waste streams, a considerable effort is still under way in the area of intermediate and low level waste management. Current industrial practices for the treatment of gaseous effluents focusing essentially on Iodine-129 and Krypton-85 will be reviewed along with the development of novel technologies to extract, condition, and store these fission products. As an example, the current industrial practice is to discharge Kr-85, a radioactive gas, entirely to the atmosphere after dilution, but for the large recycling facilities envisioned in the near future, several techniques such as 1) cryogenic distillation and selective absorption in solvents, 2) adsorption on activated charcoal, 3) selective sorption on chemical modified zeolites, or 4) diffusion through membranes with selective permeability are potential technologies to retain the gas.

Patricia Paviet-Hartmann; William Kerlin; Steven Bakhtiar

2010-11-01T23:59:59.000Z

213

Impact of nitrate-enhanced leachate recirculation on gaseous releases from a landfill bioreactor cell  

SciTech Connect

This study evaluates the impact of nitrate injection on a full scale landfill bioreactor through the monitoring of gaseous releases and particularly N{sub 2}O emissions. During several weeks, we monitored gas concentrations in the landfill gas collection system as well as surface gas releases with a series of seven static chambers. These devices were directly connected to a gas chromatograph coupled to a flame ionisation detector and an electron capture detector (GC-FID/ECD) placed directly on the field. Measurements were performed before, during and after recirculation of raw leachate and nitrate-enhanced leachate. Raw leachate recirculation did not have a significant effect on the biogas concentrations (CO{sub 2}, CH{sub 4} and N{sub 2}O) in the gas extraction network. However, nitrate-enhanced leachate recirculation induced a marked increase of the N{sub 2}O concentrations in the gas collected from the recirculation trench (100-fold increase from 0.2 ppm to 23 ppm). In the common gas collection system however, this N{sub 2}O increase was no more detectable because of dilution by gas coming from other cells or ambient air intrusion. Surface releases through the temporary cover were characterized by a large spatial and temporal variability. One automated chamber gave limited standard errors over each experimental period for N{sub 2}O releases: 8.1 {+-} 0.16 mg m{sup -2} d{sup -1} (n = 384), 4.2 {+-} 0.14 mg m{sup -2} d{sup -1} (n = 132) and 1.9 {+-} 0.10 mg m{sup -2} d{sup -1} (n = 49), during, after raw leachate and nitrate-enhanced leachate recirculation, respectively. No clear correlation between N{sub 2}O gaseous surface releases and recirculation events were evidenced. Estimated N{sub 2}O fluxes remained in the lower range of what is reported in the literature for landfill covers, even after nitrate injection.

Tallec, G.; Bureau, C. [Cemagref, UR HBAN, Parc de Tourvoie, BP44, F-92163 Antony (France); Peu, P.; Benoist, J.C. [Cemagref, UR GERE, 17 Avenue de Cucille, CS 64427, F-35044 Rennes (France); Lemunier, M. [Suez-Environnement, CIRADE, 38 Av. Jean Jaures, 78440 Gargenville (France); Budka, A.; Presse, D. [SITA France, 132 Rue des 3 Fontanot, 92000 Nanterre Cedex (France); Bouchez, T. [Cemagref, UR HBAN, Parc de Tourvoie, BP44, F-92163 Antony (France)], E-mail: theodore.bouchez@cemagref.fr

2009-07-15T23:59:59.000Z

214

Calculation of releases of radioactive materials in gaseous and liquid effluents from pressurized water reactors (PWR-GALE Code). Revision 1  

SciTech Connect

This report revises the original issuance of NUREG-0017, ''Calculation of Releases of Radioactive Materials in Gaseous and Liquid Effluents from Pressurized Water Reactors (PWR-GALE-Code)'' (April 1976), to incorporate more recent operating data now available as well as the results of a number of in-plant measurement programs at operating pressurized water reactors. The PWR-GALE Code is a computerized mathematical model for calculating the releases of radioactive material in gaseous and liquid effluents (i.e., the gaseous and liquid source terms). The US Nuclear Regulatory Commission uses the PWR-GALE Code to determine conformance with the requirements of Appendix I to 10 CFR Part 50.

Chandrasekaran, T.; Lee, J.Y.; Willis, C.A.

1985-04-01T23:59:59.000Z

215

Six-dimensional muon beam cooling in a continuous, homogeneous, gaseous hydrogen absorber  

DOE Green Energy (OSTI)

The fast reduction of the six-dimensional phase space of muon beams is required for muon colliders and is also of great importance for neutrino factories based on accelerated muon beams. Ionization cooling, where all momentum components are degraded by an energy absorbing material and only the longitudinal momentum is restored by RF cavities, provides a means to quickly reduce transverse beam sizes. However, the beam momentum spread cannot be reduced by this method unless the longitudinal emittance can be transformed or exchanged into the transverse emittance. The best emittance exchange plans up to now have been accomplished by using magnets to disperse the beam along the face of a wedge-shaped absorber such that higher momentum particles pass through thicker parts of the absorber and thus suffer larger ionization energy loss. In the scheme advocated in this paper, it is noted that one can generate a magnetic channel filled with absorber where higher momentum corresponds to a longer path length and therefore larger ionization energy loss. Thus a homogeneous absorber, without any special edge shaping, can provide the desired emittance exchange. An attractive example of a cooling channel based on this principle involves the use of RF cavities filled with a continuous gaseous hydrogen absorber in a magnetic channel composed of a solenoidal field with superimposed helical transverse dipole, quadrupole, and octupole fields. The theory of this helical channel is described to support the analytical prediction of a million-fold reduction in phase space volume in a channel 150 m long.

Yaroslav Derbenev; Rolland P. Johnson

2004-10-01T23:59:59.000Z

216

Infrared absorption strengths of potential gaseous diffusion plant coolants and related reaction products  

SciTech Connect

The DOE gaseous diffusion plant complex makes extensive use of CFC-114 as a primary coolant. As this material is scheduled for production curtailment within the next few years, a search for substitutes is underway, and apparently workable alternatives have been found and are under testing. The presently favored substitutes, FC-c3l8 and FC-3110, satisfy ozone depletion and operational chemical compatibility concerns, but will be long-lived greenhouse gases, and thus may be regulated on that basis in the future. A further search is therefore underway for compounds with shorter atmospheric lifetimes which could otherwise satisfy operational physical and chemical requirements. A number of such candidates are in the process of being screened for chemical compatibility in a fluorinating environment. This document presents infrared spectral data developed and used in that study for candidates recently examined, and also for many of their fluorination reaction products. The data include gas-phase infrared spectra, quantitative peak intensities as a function of partial pressure, and integrated absorbance strength in the IR-transparent atmospheric window of interest to global warming modeling. Combining this last property with literature or estimated atmospheric lifetimes, rough estimates of global warming potential for these compounds are also presented.

Trowbridge, L.D.; Angel, E.C.

1993-05-01T23:59:59.000Z

217

Environmental Survey preliminary report, Oak Ridge Gaseous Diffusion Plant, Oak Ridge, Tennessee  

SciTech Connect

This report presents the preliminary findings from the first phase of the Environmental Survey of the US Department of Energy's (DOE) Oak Ridge Gaseous Diffusion Plant (ORGDP) conducted March 14 through 25, 1988. The Survey is being conducted by an interdisciplinary team of environmental specialists, led and managed by the Office of Environment, Safety and Health's Office of Environmental Audit. Individual team components are being supplied by a private contractor. The objective of the Survey is to identify environmental risk associated with ORGDP. The Survey covers all environmental media and all areas of environmental regulation. It is being performed in accordance with the DOE Environmental Survey Manual. This phase of the Survey involves the review of existing site environmental data, observations of the operations carried on at ORGDP, and interviews with site personnel. The Survey team developed a Sampling and Analysis Plan to assist in further assessing certain of the environmental problems identified during is on-site activities. The Sampling and Analysis Plan will be executed by Idaho National Engineering Laboratory (INEL). When completed, the results will be incorporated into the ORGDP Survey findings for in inclusion into the Environmental Survey Summary Report. 120 refs., 41 figs., 74 tabs.

Not Available

1989-02-01T23:59:59.000Z

218

Corrosion behavior of stainless steel in solid oxide fuel cell simulated gaseous environment  

DOE Green Energy (OSTI)

Significant progress in reducing the operating temperature of solid oxide fuel cells (SOFC) from {approx}1000 C to {approx} 750 C may permit the replacement of currently used ceramic interconnects by metallic interconnects in planar SOFCs (PSOFC). The use of metallic interconnects will result in a substantial cost reduction of PSOFCs. The interconnects operate in severe gaseous environments, in which one side of the interconnect can be exposed to hydrogen and the other side to air or oxygen at temperatures up to 800 C. Similar environmental conditions can exist in devices used for separating hydrogen from CO after reforming methane and steam. Type 304 stainless steel was selected for this base line study aimed at understanding corrosion processes in dual gas environments. This paper discusses the oxidation resistance of 304 stainless steel exposed to a dual environment gas at 800 C. The dual environment consisted of air on one side of the specimen and 1% hydrogen in nitrogen on the other side. The surface characterization techniques used in this study were optical and scanning electron microscopy, as well as various x-ray techniques.

Ziomek-Moroz, M.; Covino, Bernard S., Jr.; Holcomb, Gordon R.; Cramer, Stephen D.; Matthes, Steven A.; Bullard, Sophie J.; Dunning, John S.; Alman, David E.; Wilson, Rick D.; Singh, P.

2003-01-01T23:59:59.000Z

219

Gaseous Radiochemical Method for Registration of Ionizing Radiation and Its Possible Applications in Science and Industry  

E-Print Network (OSTI)

This work presents a new possibility of registration of ionizing radiation by the flowing gaseous radiochemical method (FGRM). The specified method uses the property of some solid crystalline lattice materials for a free emission of radioactive isotopes of inert gas atoms formed as a result of nuclear reactions. Generated in an ampoule of the detector, the radioactive inert gases are transported by a gas-carrier into the proportional gas counter of the flowing type, where the decay rate of the radioactive gas species is measured. This quantity is unequivocally related to the flux of particles (neutrons, protons, light and heavy ions) at the location of the ampoule. The method was used to monitor the neutron flux of the pulsed neutron target "RADEX" driven by the linear proton accelerator of INR RAS. Further progress of the FGRM may give rise to possible applications in nuclear physics, astrophysics and medicine, in the nondestructive control of fissionable materials, diagnostics of thermonuclear plasma, monitoring of fluxes and measurement of spectra of bombarding particles.

S. G. Lebedev; V. E. Yants

2005-10-06T23:59:59.000Z

220

Report on the biological monitoring program at Paducah Gaseous Diffusion Plant December 1993 to December 1994  

SciTech Connect

On September 24, 1987, the Commonwealth of Kentucky Natural Resources and Environmental Protection Cabinet issued an Agreed Order that required the development of a Biological Monitoring Program (BMP) for the Paducah Gaseous Diffusion Plant (PGDP). The PGDP BMP was implemented in 1987 by the University of Kentucky. Research staff of the Environmental Sciences Division (ESD) at Oak Ridge National Laboratory (ORNL) served as reviewers and advisers to the University of Kentucky. Beginning in fall 1991, ESD added data collection and report preparation to its responsibilities for the PGDP BMP. The goals of BMP are to (1) demonstrate that the effluent limitations established for PGDP protect and maintain the use of Little Bayou and Big Bayou creeks for growth and propagation of fish and other aquatic life, (2) characterize potential environmental impacts, (3) document the effects of pollution abatement facilities on stream biota, and (4) recommend any program improvements that would increase effluent treatability. In September 1992, a renewed Kentucky Pollutant Discharge Elimination System (KPDES) permit was issued to PGDP. The BMP for PGDP consists of three major tasks: (1) effluent and ambient toxicity monitoring, (2) bioaccumulation studies, and (3) ecological surveys of stream communities (i.e., benthic macroinvertebrates and fish). This report includes ESD activities occurring from December 1993 to December 1994, although activities conducted outside this time period are included as appropriate.

Kszos, L.A. [ed.

1996-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Report on the biological monitoring program at Paducah Gaseous Diffusion Plant, January--December 1996  

Science Conference Proceedings (OSTI)

On September 24, 1987, the Commonwealth of Kentucky Natural Resources and Environmental Protection Cabinet issued an Agreed Order that required the development of a Biological Monitoring Program (BMP) for the Paducah Gaseous diffusion Plant (PGDP). The PGDP BMP was conducted by the University of Kentucky Between 1987 and 1992 and by staff of the Environmental Sciences Division (ESD) at Oak Ridge National Laboratory (ORNL) from 1991 to present. The goals of BMP are to (1) demonstrate that the effluent limitations established for PGDP protect and maintain the use of Little Bayou and Big Bayou creeks for growth and propagation of fish and other aquatic life, (2) characterize potential environmental impacts, and (3) document the effects of pollution abatement facilities on stream. The BMP for PGDP consists of three major tasks: (1) effluent toxicity monitoring, (2) bioaccumulation studies, and (3) ecological surveys of stream communities (i.e., benthic macroinvertebrates and fish). This report focuses on ESD activities occurring from January 1996 to December 1996, although activities conducted outside this time period are included as appropriate.

Kszos, L.A. [ed.; Konetsky, B.K.; Peterson, M.J.; Petrie, R.B.; Ryon, M.G.; Smith, J.G.; Southworth, G.R.

1997-06-01T23:59:59.000Z

222

IAEA Verification Experiment at the Portsmouth Gaseous Diffusion Plant: Report on the Cascade Header Enrichment Monitor  

SciTech Connect

The authors describe the Cascade Header Enrichment Monitor (CHEM) for the Portsmouth Gaseous Diffusion Plant at Piketon, Ohio, and present the calibration and measurement results. The US government has offered excess fissile material that is no longer needed for defense purposes for International Atomic Energy Agency (IAEA) inspection. Measurement results provided by the CHEM were used by the IAEA in a verification experiment to provide confidence that the US successfully blended excess highly enriched uranium (HEU) down to low enriched uranium (LEU). The CHEM measured the uranium enrichment in two cascade header pipes, a 20.32-cm HEU pipe and a 7.62-cm product LEU pipe. The CHEM determines the amount of {sup 235}U from the 185.7-keV gamma-ray photopeak and the amount of total uranium by x-ray fluorescence (XRF) of the 98.4-keV x-ray from uranium with a {sup 57}Co XRF source. The ratio yields the enrichment. The CHEM consists of a collimator assembly, an electromechanically cooled germanium detector, and a rack-mounted personal computer running commercial and custom software. The CHEM was installed in December 1997 and was used by the IAEA inspectors for announced and unannounced inspections on the HEU and LEU header pipes through October 1998. The equipment was sealed with tamper-indicating enclosures when the inspectors were not present.

P. L. Kerr; D. A. Close; W. S. Johnson; R. M. Kandarian; C. E. Moss; C. D. Romero

1999-03-01T23:59:59.000Z

223

Radioactivity discharged in gaseous wastes from separations facilities 200 Area stacks during 1970  

SciTech Connect

This document summarizes by stack number the amount of radioactivity discharged from the facilities of Chemical Processing Division, Atlantic Richfield Hanford Company. Emission data for 231-Z Building and 2724-W, Laundry Building, which are operated by other AEC Contractors are not available for this report. Total beta, alpha and I{sup l3l} radioactive emissions from the stacks for 1970 were as follows: alpha (Pu, assumed) 1.59 {times} 10{sup {minus}1} C, alpha (U, assumed) 1.44 {times} 10{sup {minus}3} C, beta 1.93C, and I{sup 131} 4.92 {times} 10{sup {minus}1} C. Air samples taken continuously from gaseous release facilities were analyzed for total beta and alpha activity (and iodine activity, where applicable). Where sample data were not available, the total radioactive emission was adjusted by using the average emission rate prior to the subject period; or where activity was near constant, by using the daily average as a base. A gamma scan of the 291-S stack is included in the report.

Maxfield, H.L.

1971-03-29T23:59:59.000Z

224

Design and reliability optimization of a MEMS micro-hotplate for combustion of gaseous fuel  

SciTech Connect

This report will detail the process by which the silicon carbide (SiC) microhotplate devices, manufactured by GE, were imaged using IR microscopy equipment available at Sandia. The images taken were used as inputs to a finite element modeling (FEM) process using the ANSYS software package. The primary goal of this effort was to determine a method to measure the temperature of the microhotplate. Prior attempts to monitor the device's temperature by measuring its resistance had proven to be unreliable due to the nonlinearity of the doped SiC's resistance with temperature. As a result of this thermal modeling and IR imaging, a number of design recommendations were made to facilitate this temperature measurement. The lower heating value (LHV) of gaseous fuels can be measured with a catalyst-coated microhotplate calorimeter. GE created a silicon carbide (SiC) based microhotplate to address high-temperature survivability requirements for the application. The primary goal of this effort was to determine a method to measure the temperature of the microhotplate. Prior attempts to monitor the device's temperature by measuring its resistance had proven to be unreliable due to the non-linearity of the doped SiC's resistance with temperature. In this work, thermal modeling and IR imaging were utilized to determine the operation temperature as a function of parameters such as operation voltage and device sheet resistance. A number of design recommendations were made according to this work.

Manginell, R. P.

2012-03-01T23:59:59.000Z

225

An Aerial Radiological Survey of the Portsmouth Gaseous Diffusion Plant and Surrounding Area, Portsmouth, Ohio  

SciTech Connect

An aerial radiological survey was conducted over the 16 square-mile (~41 square-kilometer) area surrounding the Portsmouth Gaseous Diffusion Plant. The survey was performed in August 2007 utilizing a large array of helicopter mounted sodium iodide detectors. The purpose of the survey was to update the previous radiological survey levels of the environment and surrounding areas of the plant. A search for a missing radium-226 source was also performed. Implied exposure rates, man-made activity, and excess bismuth-214 activity, as calculated from the aerial data are presented in the form of isopleth maps superimposed on imagery of the surveyed area. Ground level and implied aerial exposure rates for nine specific locations are compared. Detected radioisotopes and their associated gamma ray exposure rates were consistent with those expected from normal background emitters. At specific plant locations described in the report, man-made activity was consistent with the operational histories of the location. There was no spectral activity that would indicate the presence of the lost source.

Namdoo Moon

2007-12-01T23:59:59.000Z

226

Independent Oversight Review of Preparedness for Severe Natural Phenomena Events at the Portsmouth Gaseous Diffusion Plant, November 2013  

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

of of Preparedness for Severe Natural Phenomena Events at the Portsmouth Gaseous Diffusion Plant May 2011 November 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose................................................................................................................................................ 1 2.0 Scope................................................................................................................................................... 1 3.0 Background ......................................................................................................................................... 1 4.0 Methodology ....................................................................................................................................... 2

227

Gaseous dry deposition of atmospheric mercury: A comparison of two surface resistance models for deposition to semiarid vegetation  

Science Conference Proceedings (OSTI)

In the United States, atmospheric mercury (Hg) deposition, from regional and international sources, is the largest contributor to increased Hg concentrations in bodies of water leading to bioaccumulation of methyl mercury in fish. In this work, modeled dry deposition velocities (vd) for gaseous Hg are calculated using two surface resistance parameterizations found in the literature. The flux is then estimated as the product of the species concentration and modeled vd. The calculations utilize speciated atmospheric mercury concentrations measured during an annual monitoring campaign in southern Idaho. Gaseous elemental mercury (GEM) and reactive gaseous mercury (RGM) were monitored with Tekran models 2537A and 1130, respectively. Two anemometers collected meteorological data, including one fast-response three-dimensional sonic anemometer to measure turbulence parameters. For the flux calculation, three resistances are required to model the mechanisms that transport gaseous Hg from the atmosphere to the surface, with the surface resistance being the largest source of error. Results from two surface resistance models are presented. In particular, the downward flux is sensitive to the choice of model and input parameters such as seasonal category and mesophyll resistance. A comparison of annual GEM and RGM fluxes calculated using the two models shows good agreement for RGM (3.2% difference for annual deposition); however, for the low-solubility species of GEM, the models show a 64% difference in annual fluxes, with a range of 32% to 200% in seasonal fluxes. Results indicate the importance of understanding the diurnal variation of the physical processes modeled in the surface resistance parameterization for vd.

Heather A. Holmes; Eric R. Pardyjak; Kevin D. Perry; Michael L. Abbott

2011-07-01T23:59:59.000Z

228

Review of the Portsmouth Gaseous Diffusion Plant Work Planning and Control Activities Prior to Work Execution, January 2013  

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

Independent Oversight Review of the Independent Oversight Review of the Portsmouth Gaseous Diffusion Plant Work Planning and Control Activities Prior to Work Execution January 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose ................................................................................................................................................. 1 2.0 Scope.................................................................................................................................................... 1 3.0 Background........................................................................................................................................... 1

229

PAndAS IN THE MIST: THE STELLAR AND GASEOUS MASS WITHIN THE HALOS OF M31 AND M33  

SciTech Connect

Large-scale surveys of the prominent members of the Local Group have provided compelling evidence for the hierarchical formation of massive galaxies, revealing a wealth of substructure that is thought to be the debris from ancient and ongoing accretion events. In this paper, we compare two extant surveys of the M31-M33 subgroup of galaxies: the Pan-Andromeda Archaeological Survey of the stellar structure, and a combination of observations of the H I gaseous content, detected at 21 cm. Our key finding is a marked lack of spatial correlation between these two components on all scales, with only a few potential overlaps between stars and gas. The paucity of spatial correlation significantly restricts the analysis of kinematic correlations, although there does appear to be H I kinematically associated with the Giant Stellar Stream where it passes the disk of M31. These results demonstrate that different processes must significantly influence the dynamical evolution of the stellar and H I components of substructures, such as ram pressure driving gas away from a purely gravitational path. Detailed modeling of the offset between the stellar and gaseous substructures will provide a determination of the properties of the gaseous halos of M31 and M33.

Lewis, Geraint F. [Sydney Institute for Astronomy, School of Physics A28, The University of Sydney, NSW 2006 (Australia)] [Sydney Institute for Astronomy, School of Physics A28, The University of Sydney, NSW 2006 (Australia); Braun, Robert [CSIRO Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710 (Australia)] [CSIRO Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710 (Australia); McConnachie, Alan W. [Dominion Astrophysical Observatory, 5071 West Saanich Road, Victoria, BC V9E 2E7 (Canada)] [Dominion Astrophysical Observatory, 5071 West Saanich Road, Victoria, BC V9E 2E7 (Canada); Irwin, Michael J.; Chapman, Scott C. [Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA (United Kingdom)] [Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA (United Kingdom); Ibata, Rodrigo A.; Martin, Nicolas F. [Observatoire de Strasbourg, 11, rue de l'Universite, F-67000 Strasbourg (France)] [Observatoire de Strasbourg, 11, rue de l'Universite, F-67000 Strasbourg (France); Ferguson, Annette M. N. [Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ (United Kingdom)] [Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ (United Kingdom); Fardal, Mark [Department of Astronomy, University of Massachusetts, Amherst, MA 01003-9305 (United States)] [Department of Astronomy, University of Massachusetts, Amherst, MA 01003-9305 (United States); Dubinski, John [Department of Astronomy and Astrophysics, 50 St. George Street, University of Toronto, ON M5S 3H4 (Canada)] [Department of Astronomy and Astrophysics, 50 St. George Street, University of Toronto, ON M5S 3H4 (Canada); Widrow, Larry [Department of Physics, Queen's University, 99 University Avenue, Kingston, ON K7L 3N6 (Canada)] [Department of Physics, Queen's University, 99 University Avenue, Kingston, ON K7L 3N6 (Canada); Mackey, A. Dougal [Research School of Astronomy and Astrophysics, Mount Stromlo Observatory, Cotter Road, Weston Creek, ACT 2611 (Australia)] [Research School of Astronomy and Astrophysics, Mount Stromlo Observatory, Cotter Road, Weston Creek, ACT 2611 (Australia); Babul, Arif [Department of Physics and Astronomy, University of Victoria, Victoria, BC V8W 3P6 (Canada)] [Department of Physics and Astronomy, University of Victoria, Victoria, BC V8W 3P6 (Canada); Tanvir, Nial R. [Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH (United Kingdom)] [Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH (United Kingdom); Rich, Michael, E-mail: geraint.lewis@sydney.edu.au [Division of Astronomy, University of California, 8979 Math Sciences, Los Angeles, CA 90095-1562 (United States)] [Division of Astronomy, University of California, 8979 Math Sciences, Los Angeles, CA 90095-1562 (United States)

2013-01-20T23:59:59.000Z

230

Summary and Outlook of the International Workshop on Aging Phenomena in Gaseous Detectors (DESY, Hamburg, October, 2001)  

E-Print Network (OSTI)

High Energy Physics experiments are currently entering a new era which requires the operation of gaseous particle detectors at unprecedented high rates and integrated particle fluxes. Full functionality of such detectors over the lifetime of an experiment in a harsh radiation environment is of prime concern to the involved experimenters. New classes of gaseous detectors such as large-scale straw-type detectors, Micro-pattern Gas Detectors and related detector types with their own specific aging effects have evolved since the first workshop on wire chamber aging was held at LBL, Berkeley in 1986. In light of these developments and as detector aging is a notoriously complex field, the goal of the workshop was to provide a forum for interested experimentalists to review the progress in understanding of aging effects and to exchange recent experiences. A brief summary of the main results and experiences reported at the 2001 workshop is presented, with the goal of providing a systematic review of aging effects in state-of-the-art and future gaseous detectors.

M. Titov; M. Hohlmann; C. Padilla; N. Tesch

2002-04-04T23:59:59.000Z

231

Method for selectively removing fluorine and fluorine-containing contaminants from gaseous UF/sub 6/. [ClF/sub 3/  

DOE Patents (OSTI)

This invention is a method for effecting preferential removal and immobilization of certain gaseous contaminants from gaseous UF/sub 6/. The contaminants include fluorine and fluorides which are more reactive with CaCO/sub 3/ than is UF/sub 6/. The method comprises contacting the contaminant-carrying UF/sub 6/ with particulate CaCO/sub 3/ at a temperature effecting reaction of the contaminant and the CaCO/sub 3/.

Jones, R.L.; Otey, M.G.; Perkins, R.W.

1980-11-24T23:59:59.000Z

232

Prioritizing and scheduling Portsmouth Gaseous Diffusion Plant safeguards upgrades. Final report  

Science Conference Proceedings (OSTI)

As part of the Site Safeguards and Security Plan (SSSP), facilities are required to develop a Resource Plan (RP). The Resource Plan provides documentation and justification for the facility`s planned upgrades, including the schedule, priority, and cost estimates for the safeguards and security upgrades. Portsmouth Gaseous Diffusion Plant (PORTS) management has identified and obtained funding approval for a number of safeguards and security upgrades, including line-item construction projects. These upgrade projects were selected to address a variety of concerns identified in the PORTS vulnerability assessments and other reviews performed in support of the SSSP process. However, budgeting and scheduling constraints do not make it possible to simultaneously begin implementation of all of the upgrade projects. A formal methodology and analysis are needed to explicitly address the trade-offs between competing safeguards objectives, and to prioritize and schedule the upgrade projects to ensure that the maximum benefit can be realized in the shortest possible time frame. The purpose of this report is to describe the methodology developed to support these upgrade project scheduling decisions. The report also presents the results obtained from applying the methodology to a set of the upgrade projects selected by PORTS S&S management. Data for the analysis are based on discussions with personnel familiar with the PORTS safeguards and security needs, the requirements for implementing these upgrades, and upgrade funding limitations. The analysis results presented here assume continued highly enriched uranium (HEU) operations at PORTS. However, the methodology developed is readily adaptable for the evaluation of other operational scenarios and other resource allocation issues relevant to PORTS.

Edmunds, T.; Saleh, R.; Zevanove, S.

1992-02-01T23:59:59.000Z

233

Uranium hexafluoride packaging tiedown systems overview at Portsmouth Gaseous Diffusion Plant, Piketon, Ohio. Revision 1  

SciTech Connect

The Portsmouth Gaseous Diffusion Plant (PORTS) in Piketon, Ohio, is operated by Martin Marietta Energy Systems, Inc., through the US Department of Energy-Oak Ridge Operations Office (DOE-ORO) for the US Department of Energy-Headquarters, Office of Nuclear Energy. The PORTS conducts those operations that are necessary for the production, packaging, and shipment of uranium hexafluoride (UF{sub 6}). Uranium hexafluoride enriched uranium than 1.0 wt percent {sup 235}U shall be packaged in accordance with the US Department of Transportation (DOT) regulations of Title 49 CFR Parts 173 (Reference 1) and 178 (Reference 2), or in US Nuclear Regulatory Commission (NRC) or US Department of Energy (DOE) certified package designs. Concerns have been expressed regarding the various tiedown methods and condition of the trailers being used by some shippers/carriers for international transport of the UF{sub 6} cylinders/overpacks. Because of the concerns about international shipments, the US Department of Energy-Headquarters (DOE-HQ) Office of Nuclear Energy, through DOE-HQ Transportation Management Division, requested Westinghouse Hanford Company (Westinghouse Hanford) to review UF{sub 6} packaging tiedown and shipping practices used by PORTS, and where possible and appropriate, provide recommendations for enhancing these practices. Consequently, a team of two individuals from Westinghouse Hanford visited PORTS on March 5 and 6, 1990, for the purpose of conducting this review. The paper provides a brief discussion of the review activities and a summary of the resulting findings and recommendations. A detailed reporting of the is documented in Reference 4.

Becker, D.L.; Green, D.J.; Lindquist, M.R.

1993-07-01T23:59:59.000Z

234

Modifying woody plants for efficient conversion to liquid and gaseous fuels  

DOE Green Energy (OSTI)

The Short Rotation Woody Crop Program (SRWCP), Department of Energy, is developing woody plant species as sources of renewable energy. Much progress has been made in identifying useful species, and testing site adaptability, stand densities, coppicing abilities, rotation lengths, and harvesting systems. Conventional plant breeding and intensive cultural practices have been used to increase above-ground biomass yields. Given these and foreseeable accomplishments, program leaders are now shifting attention to prospects for altering biomass physical and chemical characteristics, and to ways for improving the efficiency with which biomass can be converted to gaseous and liquid fuels. This report provides a review and synthesis of literature concerning the quantity and quality of such characteristics and constituents, and opportunities for manipulating them via conventional selection and breeding and/or molecular biology. Species now used by SRWCP are emphasized, with supporting information drawn from others as needed. Little information was found on silver maple (Acer saccharinum), but general comparisons (Isenberg 1981) suggest composition and behavior similar to those of the other species. Where possible, conclusions concerning means for and feasibility of manipulation are given, along with expected impacts on conversion efficiency. Information is also provided on relationships to other traits, genotype X environment interactions, and potential trade-offs or limitations. Biomass productivity per se is not addressed, except in terms of effects that may by caused by changes in constituent quality and/or quantity. Such effects are noted to the extent they are known or can be estimated. Likely impacts of changes, however effected, on suitability or other uses, e.g., pulp and paper manufacture, are notes. 311 refs., 4 figs., 9 tabs.

Dinus, R.J.; Dimmel, D.R.; Feirer, R.P.; Johnson, M.A.; Malcolm, E.W. (Institute of Paper Science and Technology, Atlanta, GA (USA))

1990-07-01T23:59:59.000Z

235

Safeguards Verification Measurements using Laser Ablation, Absorbance Ratio Spectrometry in Gaseous Centrifuge Enrichment Plants  

Science Conference Proceedings (OSTI)

Laser Ablation Absorbance Ratio Spectrometry (LAARS) is a new verification measurement technology under development at the US Department of Energys (DOE) Pacific Northwest National Laboratory (PNNL). LAARS uses three lasers to ablate and then measure the relative isotopic abundance of uranium compounds. An ablation laser is tightly focused on uranium-bearing solids producing a small plume containing uranium atoms. Two collinear wavelength-tuned spectrometry lasers transit through the plume and the absorbance of U-235 and U-238 isotopes are measured to determine U-235 enrichment. The measurement has high relative precision and detection limits approaching the femtogram range for uranium. It is independent of chemical form and degree of dilution with nuisance dust and other materials. High speed sample scanning and pinpoint characterization allow measurements on millions of particles/hour to detect and analyze the enrichment of trace uranium in samples. The spectrometer is assembled using commercially available components at comparatively low cost, and features a compact and low power design. Future designs can be engineered for reliable, autonomous deployment within an industrial plant environment. Two specific applications of the spectrometer are under development: 1) automated unattended aerosol sampling and analysis and 2) on-site small sample destructive assay measurement. The two applications propose game-changing technological advances in gaseous centrifuge enrichment plant (GCEP) safeguards verification. The aerosol measurement instrument, LAARS-environmental sampling (ES), collects aerosol particles from the plant environment in a purpose-built rotating drum impactor and then uses LAARS-ES to quickly scan the surface of the impactor to measure the enrichments of the captured particles. The current approach to plant misuse detection involves swipe sampling and offsite analysis. Though this approach is very robust it generally requires several months to obtain results from a given sample collection. The destructive assay instrument, LAARS-destructive assay (DA), uses a simple purpose-built fixture with a sampling planchet to collect adsorbed UF6 gas from a cylinder valve or from a process line tap or pigtail. A portable LAARS-DA instrument scans the microgram quantity of uranium collected on the planchet and the assay of the uranium is measured to ~0.15% relative precision. Currently, destructive assay samples for bias defect measurements are collected in small sample cylinders for offsite mass spectrometry measurement.

Anheier, Norman C.; Cannon, Bret D.; Qiao, Hong (Amy); Phillips, Jon R.

2012-07-01T23:59:59.000Z

236

Design of an Unattended Environmental Aerosol Sampling and Analysis System for Gaseous Centrifuge Enrichment Plants  

Science Conference Proceedings (OSTI)

The resources of the IAEA continue to be challenged by the rapid, worldwide expansion of nuclear energy production. Gaseous centrifuge enrichment plants (GCEPs) represent an especially formidable dilemma to the application of safeguard measures, as the size and enrichment capacity of GCEPs continue to escalate. During the early part of the 1990's, the IAEA began to lay the foundation to strengthen and make cost-effective its future safeguard regime. Measures under Part II of 'Programme 93+2' specifically sanctioned access to nuclear fuel production facilities and environmental sampling by IAEA inspectors. Today, the Additional Protocol grants inspection and environmental sample collection authority to IAEA inspectors at GCEPs during announced and low frequency unannounced (LFUA) inspections. During inspections, IAEA inspectors collect environmental swipe samples that are then shipped offsite to an analytical laboratory for enrichment assay. This approach has proven to be an effective deterrence to GCEP misuse, but this method has never achieved the timeliness of detection goals set forth by IAEA. Furthermore it is questionable whether the IAEA will have the resources to even maintain pace with the expansive production capacity of the modern GCEP, let alone improve the timeliness in reaching current safeguards conclusions. New safeguards propositions, outside of familiar mainstream safeguard measures, may therefore be required that counteract the changing landscape of nuclear energy fuel production. A new concept is proposed that offers rapid, cost effective GCEP misuse detection, without increasing LFUA inspection access or introducing intrusive access demands on GCEP operations. Our approach is based on continuous onsite aerosol collection and laser enrichment analysis. This approach mitigates many of the constraints imposed by the LFUA protocol, reduces the demand for onsite sample collection and offsite analysis, and overcomes current limitations associated with the in-facility misuse detection devices. Onsite environmental sample collection offers the ability to collect fleeting uranium hexafluoride emissions before they are lost to the ventilation system or before they disperse throughout the facility, to become deposited onto surfaces that are contaminated with background and historical production material. Onsite aerosol sample collection, combined with enrichment analysis, provides the unique ability to quickly detect stepwise enrichment level changes within the facility, leading to a significant strengthening of facility misuse deterence. We report in this paper our study of several GCEP environmental sample release scenarios and simulation results of a newly designed aerosol collection and particle capture system that is fully integrated with the Laser Ablation, Absorbance Ratio Spectrometry (LAARS) uranium particle enrichment analysis instrument that was developed at the Pacific Northwest National Laboratory.

Anheier, Norman C.; Munley, John T.; Alexander, M. L.

2011-07-19T23:59:59.000Z

237

Advanced Laser Diagnostics Development for the Characterization of Gaseous High Speed Flows  

E-Print Network (OSTI)

The study of high-speed flows represents a challenging problem in the fluid dynamics field due to the presence of chemical reactions and non-equilibrium effects. Hypersonic flights, where speeds reach Mach 5 and above, are particularly influenced by these effects, resulting in a direct impact on the flow and consequently on the aerodynamic performance of a vehicle traveling at these speeds. The study of hypersonic flow conditions requires the experimental capability of determining local temperatures, pressures and velocities using non-intrusive techniques. Furthermore, the simultaneous measurement of two or more variables in a complex flow boosts the amount of information that is obtained since valuable correlations can be established. This research includes the design, construction and characterization of a hypersonic flow apparatus explicitly intended as a tool for advanced laser diagnostics development. This apparatus is characterized by its pulsed operation mode that translates into a significant reduction in mass flow rates and can be operated for long periods at Mach numbers ranging from 2.8 to 6.2. The flow conditions during the uniform flow time interval of each pulse vary by less than 1%, generating a flow of sufficient quality for quantitative measurements. The development of a laser diagnostic technique, the VENOM technique, which is a non-intrusive method to provide simultaneous 2-D measurements of the mean and instantaneous fluctuations in two-component velocity and temperature is also presented. This technique represents the first single diagnostic capable of instantaneous two-component velocimetry and thermometry in a gaseous flow field by combining two Nitric Oxide Planar Laser Induced Fluorescence methods: two-component Molecular Tagging Velocimetry and two-line thermometry, employing the nascent NO(v"=1) arising from the NO2 photodissociation as a molecular tracer. The VENOM technique is expected to be not only applicable to cold high-speed flows, which is the focus of the present work, but also to combustion and other reactive or high-enthalpy flow fields.

Sanchez-Gonzalez, Rodrigo

2012-05-01T23:59:59.000Z

238

Elucidating the solid, liquid and gaseous products from batch pyrolysis of cotton-gin trash.  

E-Print Network (OSTI)

Cotton-gin trash (CGT) was pyrolyzed at different temperatures and reaction times using an externally-heated batch reactor. The average yields of output products (solid/char, liquid/bio-oil, and gaseous) were determined. The heating value (HV) of CGT was measured to be around 15-16 MJ kg- 1 (6500-7000 Btu lb-1). In the first set of tests, CGT was pyrolyzed at 600, 700, and 800C and at 30, 45, and 60 min reaction period. The maximum char yield of 40% by weight (wt.%) was determined at 600C and 30 min settings, however, the HV of char was low and almost similar to the HV of CGT. A maximum gas yield of 40 wt.% was measured at 800C and 60 min and the highest liquid yield of 30 wt.% was determined at 800C and 30 min. In the modified pyrolysis test, the effects of temperature (500, 600, 700, and 800C) on the product yield and other properties were investigated. The experiment was performed using the same reactor purged with nitrogen at a rate of 1000 cm3 min-1. Gas yield increased as temperature was increased while the effect was opposite on char yield. The maximum char yield of 38 wt.% was determined at 500C and 30 min. The char had the largest fraction in the energy output (70-83%) followed by gas (10-20%) and bio-oil (7- 9%). Maximum gas yield of 35 wt.% was determined at 800C. The average yield of CO, H2 and total hydrocarbons (THC) generally increased with increased temperature but CO2 production decreased. Methane, ethane, and propane dominated the THC. The bio-oil yield at 600C was the highest at about 30 wt.% among the temperature settings. The HV of bio-oil was low (2-5 MJ kg-1) due to minimal non-HC compounds and high moisture content (MC). A simple energy balance of the process was performed. The process was considered energy intensive due to the high amount of energy input (6100 kJ) while generating a maximum energy output of only 10%. After disregarding the energy used for preparation and pyrolysis, the energy losses ranged from 30-46% while the energy of the output represent between 55-70% of the input energy from CGT.

Aquino, Froilan Ludana

2007-12-01T23:59:59.000Z

239

The Radiochemical Analysis of Gaseous Samples (RAGS) apparatus for nuclear diagnostics at the National Ignition Facility (invited)  

SciTech Connect

The Radiochemical Analysis of Gaseous Samples (RAGS) diagnostic apparatus was recently installed at the National Ignition Facility (NIF). Following a NIF shot, RAGS is used to pump the gas load from the NIF chamber for purification and isolation of the noble gases. After collection, the activated gaseous species are counted via gamma spectroscopy for measurement of the capsule areal density and fuel-ablator mix. Collection efficiency was determined by injecting a known amount of {sup 135}Xe into the NIF chamber, which was then collected with RAGS. Commissioning was performed with an exploding pusher capsule filled with isotopically enriched {sup 124}Xe and {sup 126}Xe added to the DT gas fill. Activated xenon species were recovered post-shot and counted via gamma spectroscopy. Results from the collection and commissioning tests are presented. The performance of RAGS allows us to establish a noble gas collection method for measurement of noble gas species produced via neutron and charged particle reactions in a NIF capsule.

Shaughnessy, D. A.; Velsko, C. A.; Jedlovec, D. R.; Yeamans, C. B.; Moody, K. J.; Tereshatov, E.; Stoeffl, W.; Riddle, A. [Lawrence Livermore National Laboratory, PO Box 808, L-236, Livermore, California 94551 (United States)

2012-10-15T23:59:59.000Z

240

Apparatus and method for generating continuous wave 16. mu. m laser radiation using gaseous CF/sub 4/  

DOE Patents (OSTI)

Apparatus and method for generating continuous wave 16 ..mu..m laser radiation using gaseous CF/sub 4/. Laser radiation at 16 ..mu..m has been observed in a cooled static cell containing low pressure CF/sub 4/ optically pumped by an approximately 3 W output power c-w CO/sub 2/ laser. The laser cavity employed was a multiple-pass off-axis-path two spherical mirror ring resonator. Unidirectional CF/sub 4/ laser output power at 615 cm/sup -1/ exceeded 2 mW. Computer calculations indicate that for modest pump powers of about 40 W, approximately 1 W of emitted laser radiation at 16 ..mu..m might be obtained.

Telle, J.M.

1984-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Apparatus and method for generating continuous wave 16 .mu.m laser radiation using gaseous CF.sub.4  

DOE Patents (OSTI)

Apparatus and method for generating continuous wave 16 .mu.m laser radiation using gaseous CF.sub.4. Laser radiation at 16 .mu.m has been observed in a cooled static cell containing low pressure CF.sub.4 optically pumped by an approximately 3 W output power cw CO.sub.2 laser. The laser cavity employed was a multiple-pass off-axis-path two spherical mirror ring resonator. Unidirectional CF.sub.4 laser output power at 615 cm.sup.-1 exceeded 2 mW. Computer calculations indicate that for modest pump powers of about 40 W, approximately 1 W of emitted laser radiation at 16 .mu.m might be obtained.

Telle, John M. (Los Alamos, NM)

1986-01-01T23:59:59.000Z

242

The Mailbox Computer System for the IAEA verification experiment on HEU downlending at the Portsmouth Gaseous Diffusion Plant  

SciTech Connect

IN APRIL 1996, THE UNITED STATES (US) ADDED THE PORTSMOUTH GASEOUS DIFFUSION PLANT TO THE LIST OF FACILITIES ELIGIBLE FOR THE APPLICATION OF INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA) SAFEGUARDS. AT THAT TIME, THE US PROPOSED THAT THE IAEA CARRY OUT A ''VERIFICATION EXPERIMENT'' AT THE PLANT WITH RESPECT TO DOOWNBLENDING OF ABOUT 13 METRIC TONS OF HIGHLY ENRICHED URANIUM (HEU) IN THE FORM OF URANIUM HEXAFLUROIDE (UF6). DURING THE PERIOD DECEMBER 1997 THROUGH JULY 1998, THE IAEA CARRIED OUT THE REQUESTED VERIFICATION EXPERIMENT. THE VERIFICATION APPROACH USED FOR THIS EXPERIMENT INCLUDED, AMONG OTHER MEASURES, THE ENTRY OF PROCESS-OPERATIONAL DATA BY THE FACILITY OPERATOR ON A NEAR-REAL-TIME BASIS INTO A ''MAILBOX'' COMPUTER LOCATED WITHIN A TAMPER-INDICATING ENCLOSURE SEALED BY THE IAEA.

Aronson, A.L.; Gordon, D.M.

2000-07-31T23:59:59.000Z

243

Detection of illicit HEU production in gaseous centrifuge enrichment plants using neutron counting techniques on product cylinders  

SciTech Connect

Innovative and novel safeguards approaches are needed for nuclear energy to meet global energy needs without the threat of nuclear weapons proliferation. Part of these efforts will include creating verification techniques that can monitor uranium enrichment facilities for illicit production of highly-enriched uranium (HEU). Passive nondestructive assay (NDA) techniques will be critical in preventing illicit HEU production because NDA offers the possibility of continuous and unattended monitoring capabilities with limited impact on facility operations. Gaseous centrifuge enrichment plants (GCEP) are commonly used to produce low-enriched uranium (LEU) for reactor fuel. In a GCEP, gaseous UF{sub 6} spins at high velocities in centrifuges to separate the molecules containing {sup 238}U from those containing the lighter {sup 235}U. Unfortunately, the process for creating LEU is inherently the same as HEU, creating a proliferation concern. Insuring that GCEPs are producing declared enrichments poses many difficult challenges. In a GCEP, large cascade halls operating thousands of centrifuges work together to enrich the uranium which makes effective monitoring of the cascade hall economically prohibitive and invasive to plant operations. However, the enriched uranium exiting the cascade hall fills product cylinders where the UF{sub 6} gas sublimes and condenses for easier storage and transportation. These product cylinders hold large quantities of enriched uranium, offering a strong signal for NDA measurement. Neutrons have a large penetrability through materials making their use advantageous compared to gamma techniques where the signal is easily attenuated. One proposed technique for detecting HEU production in a GCEP is using neutron coincidence counting at the product cylinder take off stations. This paper discusses findings from Monte Carlo N-Particle eXtended (MCNPX) code simulations that examine the feasibility of such a detector.

Freeman, Corey R [Los Alamos National Laboratory; Geist, William H [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

244

High voltage research (breakdown strengths of gaseous and liquid insulators) and environmental effects of dielectric gases. Semiannual report, October 1, 1979-March 31, 1980  

Science Conference Proceedings (OSTI)

Topics covered include basic studies of gaseous dielectrics, direct current breakdown strengths of gases/mixtures, environmental effects studies and decomposition analyses, impulse studies, breakdown strengths of binary mixtures with concentric cylinder geometry, and a discussion of the experimental apparatus. (GHT)

Christophorou, L.G.; James, D.R.; Pai, R.Y.

1980-08-01T23:59:59.000Z

245

The importance of SO{sub 2} and SO{sub 3} for sulphation of gaseous KCl - An experimental investigation in a biomass fired CFB boiler  

Science Conference Proceedings (OSTI)

This paper is based on results obtained during co-combustion of wood pellets and straw in a 12 MW circulating fluidised bed (CFB) boiler. Elemental sulphur (S) and ammonium sulphate ((NH{sub 4}){sub 2}SO{sub 4}) were used as additives to convert the alkali chlorides (mainly KCl) to less corrosive alkali sulphates. Their performance was then evaluated using several measurement tools including, IACM (on-line measurements of gaseous alkali chlorides), a low-pressure impactor (particle size distribution and chemical composition of extracted fly ash particles), and deposit probes (chemical composition in deposits collected). The importance of the presence of either SO{sub 2} or SO{sub 3} for gas phase sulphation of KCl is also discussed. Ammonium sulphate performed significantly better than elemental sulphur. A more efficient sulphation of gaseous KCl was achieved with (NH{sub 4}){sub 2}SO{sub 4} even when the S/Cl molar ratio was less than half compared to sulphur. Thus the presence of gaseous SO{sub 3} is of greater importance than that of SO{sub 2} for the sulphation of gaseous KCl. (author)

Kassman, Haakan [Vattenfall Power Consultant AB, Nykoeping (Sweden); Chalmers University of Technology, Department of Energy and Environment, Division of Energy Technology, Gothenburg (Sweden); Baefver, Linda [Technical Research Institute of Sweden, Energy Technology, Boraas (Sweden); Aamand, Lars-Erik [Chalmers University of Technology, Department of Energy and Environment, Division of Energy Technology, Gothenburg (Sweden)

2010-09-15T23:59:59.000Z

246

Annual book of ASTM Standards 2008. Section Five. Petroleum products, lubricants, and fossil fuels. Volume 05.06. Gaseous fuels; coal and coke  

SciTech Connect

The first part covers standards for gaseous fuels. The second part covers standards on coal and coke including the classification of coals, determination of major elements in coal ash and trace elements in coal, metallurgical properties of coal and coke, methods of analysis of coal and coke, petrogrpahic analysis of coal and coke, physical characteristics of coal, quality assurance and sampling.

NONE

2008-09-15T23:59:59.000Z

247

Double-pulse and single-pulse laser-induced breakdown spectroscopy for distinguishing between gaseous and particulate phase analytes  

SciTech Connect

We explore the use of a combination of double-pulse and single-pulse laser-induced breakdown spectroscopy (LIBS) methodologies as a means of differentiating between solid-phase and gaseous-phase analytes (namely, carbon) in an aerosol stream. A range of spectral data was recorded for double-pulse and single-pulse configurations, including both ns and fs prepulse widths, while varying the gas-phase mass percentage of the carbon from about 10% to 90% for various fixed carbon concentrations. The carbon emission response, as measured by the peak-to-continuum ratio, was greater for the double-pulse configuration as compared with the single-pulse response and was also enhanced as the percentage of solid-phase carbon was increased. Using a combination of the double-pulse and single-pulse emission signals, a monotonically increasing response function was found to correlate with the percentage of gas-phase analyte. However, individual data points at the measured gas-phase percentages reveal considerable scatter from the predicted trend. Furthermore, the double-pulse to single-pulse ratio was only pronounced with the ns-ns configuration as compared with the fs-ns scheme. Overall, the LIBS methodology has been demonstrated as a potential means to discriminate between gas-phase and particulate-phase fractions of the same elemental species in an aerosol, although future optimization of the temporal parameters should be explored to improve the precision and accuracy of this approach.

Asgill, Michael E.; Brown, Michael S.; Frische, Kyle; Roquemore, William M.; Hahn, David W.

2010-05-01T23:59:59.000Z

248

Effect of gaseous corrosion on the strength of SiC and Si sub 3 N sub 4  

DOE Green Energy (OSTI)

The effects of gaseous corrosion on the room-temperature flexural strength of SiC and Si{sub 3}N{sub 4} were investigated. Sintered {alpha}-SiC and hot-pressed Si{sub 3}N{sub 4} were exposed to flowing H{sub 2} or Ar at 1400{degrees}C for 10 h. The explored variables, water vapor pressure in the H{sub 2} or oxygen partial pressure in the Ar, were found to significantly affect the corrosion of these materials. Reductions in room-temperature strength were observed when weight loss resulted from active oxidation, except for the Si{sub 3}N{sub 4} exposed in Ar containing O{sub 2}. Large pits that formed during exposure were responsible for the strength reductions. When the P{sub H{sub 2}O} in H{sub 2} or P{sub O{sub 2}} in Ar was high enough to form a thin oxide layer on the sample surface, the observed strength increased, ultimately to values greater than that of the as-polished material. However, under conditions in which a much thicker oxide layer was formed, the strengths were unaffected or decreased slightly, the latter being attributed to the generation of new flaws such as bubbles or cracks in the oxide layer. 34 refs., 8 figs.

Kim, Hyoun-Ee; Moorhead, A.J.

1989-01-01T23:59:59.000Z

249

Prediction of external corrosion for steel cylinders at the Paducah Gaseous Diffusion Plant: Application of an empirical method  

Science Conference Proceedings (OSTI)

During the summer of 1995, ultrasonic wall thickness data were collected for 100 steel cylinders containing depleted uranium (DU) hexafluoride located at Paducah Gaseous Diffusion Plant (PGDP) in Paducah, Kentucky. The cylinders were selected for measurement to assess the condition of the more vulnerable portion of the cylinder inventory at PGDP. The purpose of this report is to apply the method used in Lyon to estimate the effects of corrosion for larger unsampled populations as a function of time. The scope of this report is limited and is not intended to represent the final analyses of available data. Future efforts will include continuing analyses of available data to investigate defensible deviations from the conservative assumptions made to date. For each cylinder population considered, two basic types of analyses were conducted: (1) estimates were made of the number of cylinders as a function of time that will have a minimum wall thickness of either 0 mils (1 mil = 0.00 1 in.) or 250 mils and (2) the current minimum wall thickness distributions across cylinders were estimated for each cylinder population considered. Additional analyses were also performed investigating comparisons of the results for F and G yards with the results presented in Lyon (1995).

Lyon, B.F.

1996-02-01T23:59:59.000Z

250

Nuclear criticality safety controls for uranium deposits during D and D at the Oak Ridge Gaseous Diffusion Plant  

SciTech Connect

The US Department of Energy (DOE) Deputy Assistant Secretary of Energy for Environmental Management has issued a challenge to complete DOE environmental cleanup within a decade. The response for Oak Ridge facilities is in accordance with the DOE ten-year plan which calls for completion of > 95% of environmental management work by the year 2006. This will result in a 99% risk reduction and in a significant savings in base line costs in waste management (legacy waste); remedial action (groundwater, soil, etc.); and decontamination and decommissioning (D and D). It is assumed that there will be long-term institutional control of cascade equipment, i.e., there will be no walk away from sites, and that there will be firm radioactivity release limits by 1999 for recycle metals. An integral part of these plants is the removal of uranium deposits which pose nuclear criticality safety concerns in the shut down of the Oak Ridge Gaseous Diffusion Plant. DOE has initiated the Nuclear Criticality Stabilization Program to improve nuclear criticality safety by removing the larger uranium deposits from unfavorable geometry equipment. Nondestructive assay (NDA) measurements have identified the location of these deposits. The objective of the K-25 Site Nuclear Criticality Stabilization Program is to remove and place uranium deposits into safe geometry storage containers to meet the double contingency principle. Each step of the removal process results in safer conditions where multiple controls are present. Upon completion of the Program, nuclear criticality risks will be greatly reduced.

Haire, M.J.; Jordan, W.C. [Oak Ridge National Lab., TN (United States); Jollay, L.J. III; Dahl, T.L. [Oak Ridge K-25 Site, TN (United States)

1997-02-01T23:59:59.000Z

251

Investigation of Auxiliary Power Substation 95A4 fault and fire, Portsmouth Gaseous Diffusion Plant, March 24, 1982  

SciTech Connect

On March 24, 1982, an electrical fault and resultant fire in the 480 volt Auxiliary Power Substation 95A4 at the Portsmouth Gaseous Diffusion Plant destroyed that substation. There were no personal injuries, the overall loss was limited to the Substation, and the cost of replacing the Substation with repaired and new components has been estimated at $184,000. At the time of the incident, Goodyear was involved in a project to replace the obsolete 480 volt circuit breaker of the Auxiliary Power System. This project involved the disassembly, refurishing, and reassembly of 480 volt circuit breaker carriages by Goodyear personnel. The fault occurred in a circuit breaker upgraded under this project. The investigation of this accident is reported. The evidence suggests the fault resulted from the improper assembly of an upgraded 480 volt circuit breaker. Compounding the problem and leading to the extensive damage was the failure of the transformer secondary breaker to trip open as designed and interrupt the flow of power to the substation. It is surmised that inadequate testing during preventive maintenance contributed to this condition. Additional factors which may have contributed to the accident included: no requirements for assuring the competence of the electricians who installed the circuit breakers, no specific assembly instructions to the electricians, inadequate procedure instructions, and an inadequate procedure governing operational or load testing of the breaker. (LCL)

1982-06-01T23:59:59.000Z

252

Novel mass spectrometric instrument for gaseous and particulate characterization and monitoring. Technical progress report, July 1, 1993--September 30, 1993  

SciTech Connect

The goals of the Office of Technology Development as outlined by the director of the Environmental Restoration and Waste Management Program (EM), Leo Duffy, in 1991 appropriations hearings include conducting an aggressive technology development program for waste management, waste minimization, waste treatment, storage and disposal of waste. This will be done through the development of more effective remediation technology to reduce occupational and public exposure. We are developing a method to monitor airborne emissions from the TSCA plant at Oak Ridge which will provide real-time, accurate, and inexpensive data on the emission of hazardous organic and inorganic chemicals in both gaseous and particulate form, and to assist DOE in maintaining its ambitious schedules and overcoming significant scientific limitations of its current monitoring technologies. In May 1988 under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), Oak Ridge National Laboratory (ORNL) established a timetable remedial investigation/feasibility study, and a Federal Facility Agreement is being negotiated with the Environmental Protection Agency and the Tennessee Department of Health and Environment. As a result, work has begun on inactive waste sites at ORNL to excavate and isolate wastes in compliance with current standards. In addition, ORNL must comply with the Resource Conservation and Recovery Act (RCRA), which regulates generation, transportation, treatment, storage, and disposal of hazardous wastes and corrective action of releases to the environment of hazardous wastes from active facilities.

Coggiola, M.J.

1993-11-01T23:59:59.000Z

253

Characterization Activities Conducted at the 183-DR Site in Support of an In Situ Gaseous Reduction Demonstration  

Science Conference Proceedings (OSTI)

In Situ Gaseous Reduction (ISGR) is a technology developed by DOE for the remediation of soil waste sites contaminated with hexavalent chromium. This document presents information associated with characterization activities conducted at the 183-DR site at Hanford, which is associated with a significant groundwater contaminant plume and was formerly a water treatment facility that utilized chromate as a corrosion inhibitor. Geotechnical and chemical data were collected during the excavation of trenches and the drilling of two vadose zone boreholes to support a possible ISGR demonstration at 183-DR. Although elevated total chromium and trace levels of hexavalent chromium were identified from one of the trenches and one of the boreholes, it appears that the boreholes missed the vadose zone contaminant source responsible for the chromium groundwater plume located downgradient of the 183-DR site. Recommendations are provided, however, for future work at 183-DR that may serve to identify the source for the groundwater plume and possibly provide an opportunity for an ISGR demonstration.

Thornton, Edward C.; Gilmore, Tyler J.; Olsen, Khris B.; Schalla, Ronald; Cantrell, Kirk J.

2001-03-30T23:59:59.000Z

254

Gaseous mercury release during steam curing of aerated concretes that contain fly ash and activated carbon sorbent  

Science Conference Proceedings (OSTI)

Gaseous mercury released from aerated concrete during both presteam curing at 25{sup o}C and steam curing at 80{sup o}C was measured in controlled laboratory experiments. Mercury release originated from two major components in the concrete mixture: (1) class F coal fly ash and (2) a mixture of the fly ash and powdered activated carbon onto which elemental mercury was adsorbed. Mercury emitted during each curing cycle was collected on iodated carbon traps in a purge-and-trap arrangement and subsequently measured by cold-vapor atomic fluorescence spectrometry. Through 3 h of presteam curing, the release of mercury from the freshly prepared mixture was less than 0.03 ng/kg of concrete. Releases of total mercury over the 21 h steam curing process ranged from 0.4 to 5.8 ng of mercury/kg of concrete and depended upon mercury concentrations in the concrete. The steam-cured concrete had a higher mercury release rate (ng kg{sup -1} h{sup -1}) compared to air-cured concrete containing fly ash, but the shorter curing interval resulted in less total release of mercury from the steam-cured concrete. The mercury flux from exposed concrete surfaces to mercury-free air ranged from 0.77 to 11.1 ng m{sup -2} h{sup -1}, which was similar to mercury fluxes for natural soils to ambient air of 4.2 ng m{sup -2} h{sup -1} reported by others. Less than 0.022% of the total quantity of mercury present from all mercury sources in the concrete was released during the curing process, and therefore, nearly all of the mercury was retained in the concrete. 31 refs., 4 figs., 2 tabs.

Danold W. Golightly; Chin-Min Cheng; Ping Sun; Linda K. Weavers; Harold W. Walker; Panuwat Taerakul; William E. Wolfe [Ohio State University, Columbus, OH (United States). Department of Civil and Environmental Engineering and Geodetic Science

2008-09-15T23:59:59.000Z

255

Unattended Monitoring of HEU Production in Gaseous Centrifuge Enrichment Plants using Automated Aerosol Collection and Laser-based Enrichment Assay  

Science Conference Proceedings (OSTI)

Nuclear power is enjoying rapid growth as government energy policies and public demand shift toward low carbon energy production. Pivotal to the global nuclear power renaissance is the development and deployment of robust safeguards instrumentation that allows the limited resources of the IAEA to keep pace with the expansion of the nuclear fuel cycle. Undeclared production of highly enriched uranium (HEU) remains a primary proliferation concern for modern gaseous centrifuge enrichment plants (GCEPs), due to their massive separative work unit (SWU) processing power and comparably short cascade equilibrium timescale. The Pacific Northwest National Laboratory is developing an unattended safeguards instrument, combining continuous aerosol particulate collection with uranium isotope assay, to provide timely detection of HEU production within a GCEP. This approach is based on laser vaporization of aerosol particulates, followed by laser spectroscopy to characterize the uranium enrichment level. Our prior investigation demonstrated single-shot detection sensitivity approaching the femtogram range and relative isotope ratio uncertainty better than 10% using gadolinium as a surrogate for uranium. In this paper we present measurement results on standard samples containing traces of depleted, natural, and low enriched uranium, as well as measurements on aerodynamic size uranium particles mixed in background materials (e.g., dust, minerals, soils). Improvements and optimizations in the detection electronics, signal timing, calibration, and laser alignment have lead to significant improvements in detection sensitivity and enrichment accuracy, contributing to an overall reduction in the false alarm probability. The sample substrate media was also found to play a significant role in facilitating laser-induced vaporization and the production of energetic plasma conditions, resulting in ablation optimization and further improvements in the isotope abundance sensitivity.

Anheier, Norman C.; Bushaw, Bruce A.

2010-08-11T23:59:59.000Z

256

NGPL Production, Gaseous Equivalent  

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

Monthly Annual Monthly Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes Show Data By: Data Series Area 2007 2008 2009 2010 2011 2012 View History U.S. 930,320 953,451 1,024,082 1,066,366 1,134,473 1,250,340 1930-2012 Federal Offshore Gulf of Mexico 0 0 0 0 0 2007-2011 Alabama 19,831 17,222 17,232 19,059 17,271 1969-2011 Alaska 26,332 24,337 22,925 20,835 21,554 21,470 1969-2012 Arkansas 162 139 168 213 268 424 1967-2012 California 13,521 13,972 13,722 13,244 12,095 12,755 1967-2012 Colorado 38,180 53,590 67,607 82,637 90,801 1967-2011 Florida 132 22 0 0 0 0 1968-2012 Illinois 48 42 31 345 1,043 0 1967-2012 Indiana 0 0 0 0 0 0 1979-2012

257

Portsmouth Gaseous Diffusion Plant  

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

implement Cold Shutdown requirements; disposition of depleted uranium hexafluoride cylinders; and perform Decontamination and Decommissioning. Portsmouth D&D Project Portsmouth...

258

Gaseous Hydrogen Delivery Breakout  

E-Print Network (OSTI)

natural gas pipelines can be used for H2 without total loss of natural gas flow capability #12;Breakout technology #12;Breakout Session Name R&D Needs Advanced Compressors Survey existing and emerging compression, `invisible' flame Role of federal gov't vs industry for H2 research to address market failures #12;

259

Rate of Contamination Removal of Two Phyto-remediation Sites at the DOE Portsmouth Gaseous Diffusion Plant  

SciTech Connect

This paper describes applications of phyto-remediation at the Portsmouth Gaseous Diffusion Plant (PORTS), a Department of Energy (DOE) Facility that enriched uranium from the early 1950's until 2000. Phyto-remediation has been implemented to assist in the removal of TCE (trichloroethylene) in the groundwater at two locations at the PORTS facility: the X-740 area and the X-749/X-120 area. Phyto-remediation technology is based on the ability of certain plants species (in this case hybrid poplar trees) and their associated rhizo-spheric microorganisms to remove, degrade, or contain chemical contaminants located in the soil, sediment, surface water, groundwater, and possibly even the atmosphere. Phyto-remediation technology is a promising clean-up solution for a wide variety of pollutants and sites. Mature trees, such as the hybrid poplar, can consume up to 3,000 gallons of groundwater per acre per day. Organic compounds are captured in the trees' root systems. These organic compounds are degraded by ultraviolet light as they are transpired along with the water vapor through the leaves of the trees. The phyto-remediation system at the X-740 area encompasses 766 one-year old hybrid poplar trees (Populus nigra x nigra, Populus nigra x maximowiczii, and Populus deltoides x nigra) that were planted 10 feet apart in rows 10 feet to 20 feet apart, over an area of 2.6 acres. The system was installed to manage the VOC contaminant plume. At the X749/X-120 area, a phyto-remediation system of 2,640 hybrid poplar trees (Populus nigra x maximowiczii) was planted in seven areas/zones to manage the VOC contaminant plume. The objectives of these systems are to remove contamination from the groundwater and to prevent further migration of contaminants. The goal of these remediation procedures is to achieve completely mature and functional phyto-remediation systems within two years of the initial planting of the hybrid poplar trees at each planting location. There is a direct relationship between plant transpiration, soil moisture, and groundwater flow in a phyto-remediation system. The existing monitoring program was expanded in 2004 in order to evaluate the interactions among these processes. The purpose of this monitoring program was to determine the rate of contaminant removal and to more accurately predict the amount of time needed to remediate the contaminated groundwater. Initial planting occurred in 1999 at the X-740 area, with additional replanting in 2001 and 2002. In 2003, coring of selected trees and chemical analyses illustrated the presence of TCE; however, little impact was observed in groundwater levels, analytical monitoring, and periodic tree diameter monitoring at the X-740 area. To provide better understanding of how these phyto-remediation systems work, a portable weather station was installed at the X-740 area to provide data for estimating transpiration and two different systems for measuring sap flow and sap velocity were outfitted to numerous trees. After evaluating and refining the groundwater flow and contaminant transport models, the data gathered by these two inventive methods can be used to establish a rate of contaminant removal and to better predict the time required in order to meet remediation goals for the phyto-remediation systems located at the PORTS site. (authors)

Lewis, A.C.; Baird, D.R. [CDM Federal Services, P.O. Box 789, Piketon, OH 45661 (United States)

2006-07-01T23:59:59.000Z

260

TECHNICAL EVALUATION OF TEMPORAL GROUNDWATER MONITORING VARIABILITY IN MW66 AND NEARBY WELLS, PADUCAH GASEOUS DIFFUSION PLANT  

SciTech Connect

Evaluation of disposal records, soil data, and spatial/temporal groundwater data from the Paducah Gaseous Diffusion Plant (PGDP) Solid Waste Management Unit (SWMU) 7 indicate that the peak contaminant concentrations measured in monitoring well (MW) 66 result from the influence of the regional PGDP NW Plume, and does not support the presence of significant vertical transport from local contaminant sources in SWMU 7. This updated evaluation supports the 2006 conceptualization which suggested the high and low concentrations in MW66 represent different flow conditions (i.e., local versus regional influences). Incorporation of the additional lines of evidence from data collected since 2006 provide the basis to link high contaminant concentrations in MW66 (peaks) to the regional 'Northwest Plume' and to the upgradient source, specifically, the C400 Building Area. The conceptual model was further refined to demonstrate that groundwater and the various contaminant plumes respond to complex site conditions in predictable ways. This type of conceptualization bounds the expected system behavior and supports development of environmental cleanup strategies, providing a basis to support decisions even if it is not feasible to completely characterize all of the 'complexities' present in the system. We recommend that the site carefully consider the potential impacts to groundwater and contaminant plume migration as they plan and implement onsite production operations, remediation efforts, and reconfiguration activities. For example, this conceptual model suggests that rerouting drainage water, constructing ponds or basin, reconfiguring cooling water systems, capping sites, decommissioning buildings, fixing (or not fixing) water leaks, and other similar actions will potentially have a 'direct' impact on the groundwater contaminant plumes. Our conclusion that the peak concentrations in MW66 are linked to the regional PGDP NW Plume does not imply that there TCE is not present in SWMU 7. The available soil and groundwater data indicate that the some of the waste disposed in this facility contacted and/or were contaminated by TCE. In our assessment, the relatively small amount of TCE associated with SWMU 7 is not contributing detectable TCE to the groundwater and does not represent a significant threat to the environment, particularly in an area where remediation and/or management of TCE in the NW plume will be required for an extended timeframe. If determined to be necessary by the PGDP team and regulators, additional TCE characterization or cleanup activities could be performed. Consistent with the limited quantity of TCE in SWMU 7, we identify a range of low cost approaches for such activities (e.g., soil gas surveys for characterization or SVE for remediation). We hope that this information is useful to the Paducah team and to their regulators and stakeholders to develop a robust environmental management path to address the groundwater and soil contamination associated with the burial ground areas.

Looney, B.; Eddy-Dilek, C.

2012-08-28T23:59:59.000Z

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Three-electrode low pressure discharge apparatus and method for uniform ionization of gaseous media. [CO/sub 2/ laser oscillator and pulse smoother  

DOE Patents (OSTI)

Uniform, transverse electrical discharges are produced in gaseous media without the necessity of switching the main discharge voltage with an external device which carries the entire discharge current. A three-electrode low pressure discharge tube is charged across its anode and cathode to below breakdown voltage using a dc voltage source. An array of resistors or capacitors can be made to discharge to the wire screen anode by means of a low energy high voltage pulse circuit producing sufficient preionization in the region between the anode and cathode to initiate and control the main discharge. The invention has been demonstrated to be useful as a CO/sub 2/ laser oscillator and pulse-smoother. It can be reliably operated in the sealed-off mode.

McLellan, E.J.

1980-10-17T23:59:59.000Z

262

Integrated modeling of CO2 storage and leakage scenarios including transitions between super- and sub-critical conditions, and phase change between liquid and gaseous CO2  

SciTech Connect

Storage of CO{sub 2} in saline aquifers is intended to be at supercritical pressure and temperature conditions, but CO{sub 2} leaking from a geologic storage reservoir and migrating toward the land surface (through faults, fractures, or improperly abandoned wells) would reach subcritical conditions at depths shallower than 500-750 m. At these and shallower depths, subcritical CO{sub 2} can form two-phase mixtures of liquid and gaseous CO{sub 2}, with significant latent heat effects during boiling and condensation. Additional strongly non-isothermal effects can arise from decompression of gas-like subcritical CO{sub 2}, the so-called Joule-Thomson effect. Integrated modeling of CO{sub 2} storage and leakage requires the ability to model non-isothermal flows of brine and CO{sub 2} at conditions that range from supercritical to subcritical, including three-phase flow of aqueous phase, and both liquid and gaseous CO{sub 2}. In this paper, we describe and demonstrate comprehensive simulation capabilities that can cope with all possible phase conditions in brine-CO{sub 2} systems. Our model formulation includes: (1) an accurate description of thermophysical properties of aqueous and CO{sub 2}-rich phases as functions of temperature, pressure, salinity and CO{sub 2} content, including the mutual dissolution of CO{sub 2} and H{sub 2}O; (2) transitions between super- and subcritical conditions, including phase change between liquid and gaseous CO{sub 2}; (3) one-, two-, and three-phase flow of brine-CO{sub 2} mixtures, including heat flow; (4) non-isothermal effects associated with phase change, mutual dissolution of CO{sub 2} and water, and (de-) compression effects; and (5) the effects of dissolved NaCl, and the possibility of precipitating solid halite, with associated porosity and permeability change. Applications to specific leakage scenarios demonstrate that the peculiar thermophysical properties of CO{sub 2} provide a potential for positive as well as negative feedbacks on leakage rates, with a combination of self-enhancing and self-limiting effects. Lower viscosity and density of CO{sub 2} as compared to aqueous fluids provides a potential for self-enhancing effects during leakage, while strong cooling effects from liquid CO{sub 2} boiling into gas, and from expansion of gas rising towards the land surface, act to self-limit discharges. Strong interference between fluid phases under three-phase conditions (aqueous - liquid CO{sub 2} - gaseous CO{sub 2}) also tends to reduce CO{sub 2} fluxes. Feedback on different space and time scales can induce non-monotonic behavior of CO{sub 2} flow rates.

Pruess, K.

2011-05-15T23:59:59.000Z

263

Influences of gaseous environment on low growth-rate fatigue crack propagation in steels. Annual report No. 1, January 1980. Report No. FPL/R/80/1030  

DOE Green Energy (OSTI)

The influence of gaseous environment is examined on fatigue crack propagation behavior in steels. Specifically, a fully martensitic 300-M ultrahigh strength steel and a fully bainitic 2-1/4Cr-1Mo lower strength steel are investigated in environments of ambient temperature moist air and low pressure dehumidified hydrogen and argon gases over a wide range of growth rates from 10/sup -8/ to 10/sup -2/ mm/cycle, with particular emphasis given to behavior near the crack propagation threshold ..delta..K/sub 0/. It is found that two distinct growth rate regimes exist where hydrogen can markedly accelerate crack propagation rates compared to air, (1) at near-threshold levels below (5 x 10/sup -6/ mm/cycle) and (2) at higher growth rates, typically around 10/sup -5/ mm/cycle above a critical maximum stress intensity K/sub max//sup T/. Hydrogen-assisted crack propagation at higher growth rates is attributed to a hydrogen embrittlement mechanism, with K/sub max//sup T/ nominally equal to K/sub Iscc/ (the sustained load stress corrosion threshold) in high strength steels, and far below K/sub Iscc/ in the strain-rate sensitive lower strength steels. Hydrogen-assisted crack propagation at near-threshold levels is attributed to a new mechanism involving fretting-oxide-induced crack closure generated in moist (or oxygenated) environments. The absence of hydrogen embrittlement mechanisms at near-threshold levels is supported by tests showing that ..delta..K/sub 0/ values in dry gaseous argon are similar to ..delta..K/sub 0/ values in hydrogen. The potential ramifications of these results are examined in detail.

Ritchie, R.O.; Suresh, S.; Toplosky, J.

1980-01-01T23:59:59.000Z

264

Table Definitions, Sources, and Explanatory Notes  

Gasoline and Diesel Fuel Update (EIA)

Natural Gas Plant Net Stocks Natural Gas Plant Net Stocks Definitions Key Terms Definition Barrel A unit of volume equal to 42 U.S. gallons. Butylene (C4H8) An olefinic hydrocarbon recovered from refinery processes. Ethane (C2H6) A normally gaseous straight-chain hydrocarbon. It is a colorless paraffinic gas that boils at a temperature of -127.48º F. It is extracted from natural gas and refinery gas streams. Isobutane (C4H10) A normally gaseous branch-chain hydrocarbon. It is a colorless paraffinic gas that boils at a temperature of 10.9º F. It is extracted from natural gas or refinery gas streams. Liquefied Petroleum Gases (LPG) A group of hydrocarbon-based gases derived from crude oil refining or nautral gas fractionation. They include: ethane, ethylene, propane, propylene, normal butane, butylene, isobutane, and isobutylene. For convenience of transportation, these gases are liquefied through pressurization.

265

Table Definitions, Sources, and Explanatory Notes  

Gasoline and Diesel Fuel Update (EIA)

Plant Field Production Plant Field Production Definitions Key Terms Definition Barrel A unit of volume equal to 42 U.S. gallons. Butylene (C4H8) An olefinic hydrocarbon recovered from refinery processes. Ethane (C2H6) A normally gaseous straight-chain hydrocarbon. It is a colorless paraffinic gas that boils at a temperature of -127.48º F. It is extracted from natural gas and refinery gas streams. Field Production Represents crude oil production on leases, natural gas liquids production at natural gas processing plants, new supply of other hydrocarbons/oxygenates and motor gasoline blending components, and fuel ethanol blended into finished motor gasoline. Isobutane (C4H10) A normally gaseous branch-chain hydrocarbon. It is a colorless paraffinic gas that boils at a temperature of 10.9º F. It is extracted from natural gas or refinery gas streams.

266

Effects of gaseous NH{sub 3} and SO{sub 2} on the concentration profiles of PCDD/F in flyash under post-combustion zone conditions  

Science Conference Proceedings (OSTI)

Highlights: Black-Right-Pointing-Pointer Influence of NH{sub 3} and SO{sub 2} on 2378-PCDD/F in flyash and flue gases was investigated. Black-Right-Pointing-Pointer NH{sub 3} decreased the concentration of PCDD and PCDF by 34-75% in the flyash. Black-Right-Pointing-Pointer NH{sub 3} decreased the concentration of PCDD and PCDF by 21-40% from the flue gases. Black-Right-Pointing-Pointer SO{sub 2} led to 99% PCDD and 93% PCDF reductions in the flyash. Black-Right-Pointing-Pointer SO{sub 2} led to 89% PCDD and 76% PCDF reductions in the flue gases. - Abstract: The influence of gaseous ammonia and sulphur dioxide on the formation of 2378-substituted PCDD/F on a reference flyash from a municipal waste incinerator has been investigated using a laboratory scale fixed-bed reactor. The reference flyash samples (BCR-490) was reacted under a simulated flue gas stream at temperatures of 225 and 375 Degree-Sign C for 96 h. The experiments were carried out in two series: first with simulated flue gas alone, and then with injection of NH{sub 3} or SO{sub 2} gas into the flue gas just before the reactor inlet. It was found that the injection of gaseous ammonia into the flue gas could decrease the concentration of both PCDD and PCDF by 34-75% from the solid phase and by 21-40% from the gas phase. Converting the results to I-TEQ values, it could reduce the total I-TEQ values of PCDD and PCDF in the sum of the flyash and exhaust flue gas by 42-75% and 24-57% respectively. The application of SO{sub 2} led to 99% and 93% reductions in the PCDD and PCDF average congener concentrations, respectively in the solid phase. In the gas phase, the total reductions were 89% and 76% for PCDD and PCDF, respectively. Moreover, addition of SO{sub 2} reduced the total I-TEQ value of PCDD and PCDF in the flyash and exhaust flue gas together by 60-86% and 72-82% respectively. Sulphur dioxide was more effective than ammonia in suppressing PCDD/F formation in flyash under the conditions investigated.

Hajizadeh, Yaghoub; Onwudili, Jude A. [Energy Research Institute, University of Leeds, Leeds LS2 9JT (United Kingdom); Williams, Paul T., E-mail: p.t.williams@leeds.ac.uk [Energy Research Institute, University of Leeds, Leeds LS2 9JT (United Kingdom)

2012-07-15T23:59:59.000Z

267

Improved estimates of separation distances to prevent unacceptable damage to nuclear power plant structures from hydrogen detonation for gaseous hydrogen storage. Technical report  

DOE Green Energy (OSTI)

This report provides new estimates of separation distances for nuclear power plant gaseous hydrogen storage facilities. Unacceptable damage to plant structures from hydrogen detonations will be prevented by having hydrogen storage facilities meet separation distance criteria recommended in this report. The revised standoff distances are based on improved calculations on hydrogen gas cloud detonations and structural analysis of reinforced concrete structures. Also, the results presented in this study do not depend upon equivalencing a hydrogen detonation to an equivalent TNT detonation. The static and stagnation pressures, wave velocity, and the shock wave impulse delivered to wall surfaces were computed for several different size hydrogen explosions. Separation distance equations were developed and were used to compute the minimum separation distance for six different wall cases and for seven detonating volumes (from 1.59 to 79.67 lbm of hydrogen). These improved calculation results were compared to previous calculations. The ratio between the separation distance predicted in this report versus that predicted for hydrogen detonation in previous calculations varies from 0 to approximately 4. Thus, the separation distances results from the previous calculations can be either overconservative or unconservative depending upon the set of hydrogen detonation parameters that are used. Consequently, it is concluded that the hydrogen-to-TNT detonation equivalency utilized in previous calculations should no longer be used.

Not Available

1994-05-01T23:59:59.000Z

268

Thermal discharges from Paducah Gaseous Diffusion Plant outfalls: Impacts on stream temperatures and fauna of Little Bayou and Big Bayou Creeks  

SciTech Connect

The development of a biological monitoring plan for the receiving streams of the Paducah Gaseous Diffusion Plant (PGDP) began in the late 1980s, because of an Agreed Order (AO) issued in September 1987 by the Kentucky Division of Water (KDOW). Five years later, in September 1992, more stringent effluent limitations were imposed upon the PGDP operations when the KDOW reissued Kentucky Pollutant Discharge Elimination System permit No. KY 0004049. This action prompted the US Department of Energy (DOE) to request a stay of certain limits contained in the permit. An AO is being negotiated between KDOW, the US Enrichment Corporation (USEC), and DOE that will require that several studies be conducted, including this stream temperature evaluation study, in an effort to establish permit limitations. All issues associated with this AO have been resolved, and the AO is currently being signed by all parties involved. The proposed effluent temperature limit is 89 F (31.7 C) as a mean monthly temperature. In the interim, temperatures are not to exceed 95 F (35 C) as a monthly mean or 100 F (37.8 C) as a daily maximum. This study includes detailed monitoring of instream temperatures, benthic macroinvertebrate communities, fish communities, and a laboratory study of thermal tolerances.

Roy, W.K.; Ryon, M.G.; Hinzman, R.L. [Oak Ridge National Lab., TN (United States). Computer Science and Mathematics Div.

1996-03-01T23:59:59.000Z

269

A 40 Myr OLD GASEOUS CIRCUMSTELLAR DISK AT 49 CETI: MASSIVE CO-RICH COMET CLOUDS AT YOUNG A-TYPE STARS  

Science Conference Proceedings (OSTI)

The gaseous molecular disk that orbits the main-sequence A-type star 49 Ceti has been known since 1995, but the stellar age and the origin of the observed carbon monoxide molecules have been unknown. We now identify 49 Ceti as a member of the 40 Myr old Argus Association and present a colliding comet model to explain the high CO concentrations seen at 49 Ceti and the 30 Myr old A-type star HD 21997. The model suggests that massive-400 Earth mass-analogs of the Sun's Kuiper Belt are in orbit around some A-type stars, that these large masses are composed primarily of comet-like objects, and that these objects are rich in CO and perhaps also CO{sub 2}. We identify additional early-type members of the Argus Association and the Tucana/Horologium and Columba Associations; some of these stars display excess mid-infrared emission as measured with the Widefield Infrared Survey Explorer.

Zuckerman, B. [Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States); Song, Inseok, E-mail: ben@astro.ucla.edu, E-mail: song@physast.uga.edu [Department of Physics and Astronomy, University of Georgia, Athens, GA 30602-2451 (United States)

2012-10-20T23:59:59.000Z

270

Potential Hazards Relating to Pyrolysis of c-C{sub 4}F{sub 8} in Selected Gaseous Diffusion Plant Operations  

SciTech Connect

As part of a program intended to replace the present evaporative coolant at the gaseous diffusion plants (GDPs) with a non-ozone-depleting alternate, a series of investigations of the suitability of candidate substitutes in under way. One issue concerning a primary candidate, c-C4F8, is the possibility that it might produce the highly toxic perfluoroisobutylene (PFIB) in high temperature environments. This study was commissioned to determine the likelihood and severity of decomposition under two specific high temperature thermal environments, namely the use of a flame test for the presence of coolant vapors and welding in the presence of coolant vapors. The purpose of the study was to develop and evaluate available data to provide information that will allow the technical and industrial hygiene staff at the GDPs to perform appropriate safety evaluations and to determine the need for field testing or experimental work. The scope of this study included a literature search and an evaluation of the information developed therefrom. Part of that evaluation consists of chemical kinetics modeling of coolant decomposition in the two operational environments. The general conclusions are that PFIB formation is unlikely in either situation but that it cannot be ruled out completely under extreme conditions. The presence of oxygen, moisture, and combustion products will tend to lead to formation of oxidation products (COF2, CO, CO2, and HF) rather than PFIB.

Trowbridge, L.D.

1999-03-01T23:59:59.000Z

271

Verification experiment on the downblending of high enriched uranium (HEU) at the Portsmouth Gaseous Diffusion Plant. Digital video surveillance of the HEU feed stations  

SciTech Connect

As part of a Safeguards Agreement between the US and the International Atomic Energy Agency (IAEA), the Portsmouth Gaseous Diffusion Plant, Piketon, Ohio, was added to the list of facilities eligible for the application of IAEA safeguards. Currently, the facility is in the process of downblending excess inventory of HEU to low enriched uranium (LEU) from US defense related programs for commercial use. An agreement was reached between the US and the IAEA that would allow the IAEA to conduct an independent verification experiment at the Portsmouth facility, resulting in the confirmation that the HEU was in fact downblended. The experiment provided an opportunity for the DOE laboratories to recommend solutions/measures for new IAEA safeguards applications. One of the measures recommended by Sandia National Laboratories (SNL), and selected by the IAEA, was a digital video surveillance system for monitoring activity at the HEU feed stations. This paper describes the SNL implementation of the digital video system and its integration with the Load Cell Based Weighing System (LCBWS) from Oak Ridge National Laboratory (ORNL). The implementation was based on commercially available technology that also satisfied IAEA criteria for tamper protection and data authentication. The core of the Portsmouth digital video surveillance system was based on two Digital Camera Modules (DMC-14) from Neumann Consultants, Germany.

Martinez, R.L.; Tolk, K. [Sandia National Labs., Albuquerque, NM (United States); Whiting, N. [International Atomic Energy Agency, Vienna (Austria); Castleberry, K.; Lenarduzzi, R. [Oak Ridge National Lab., TN (United States)

1998-08-01T23:59:59.000Z

272

Applicable or relevant and appropriate requirements (ARARs) for remedial actions at the Paducah Gaseous Diffusion Plant: A compendium of environmental laws and guidance  

Science Conference Proceedings (OSTI)

Section 121 of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) of 1980 specifies that remedial actions for cleanup of hazardous substances found at sites placed on the National Priorities List (NPL) by the US Environmental Protection Agency (EPA) must comply with applicable or relevant and appropriate requirements (ARARs) or standards under federal and state environmental laws. To date, the US Department of Energy (DOE) Paducah Gaseous Diffusion Plant (PGDP) has not been on the NPL. Although DOE and EPA have entered into an Administrative Consent Order (ACO), the prime regulatory authority for cleanup at PGDP will be the Resource Conservation and Recovery Act (RCRA). This report supplies a preliminary list of available federal and state ARARs that might be considered for remedial response at PGDP in the event that the plant becomes included on the NPL or the ACO is modified to include CERCLA cleanup. A description of the terms applicable'' and relevant and appropriate'' is provided, as well as definitions of chemical-, location-, and action-specific ARARS. ARARs promulgated by the federal government and by the state of Kentucky are listed in tables. In addition, the major provisions of RCRA, the Safe Drinking Water Act, the Clean Water Act, the Clean Air Act, and other acts, as they apply to hazardous and radioactive waste cleanup, are discussed.

Etnier, E.L.; Eaton, L.A. (Oak Ridge National Lab., TN (United States))

1992-03-01T23:59:59.000Z

273

Applicable or relevant and appropriate requirements (ARARs) for remedial actions at the Paducah Gaseous Diffusion Plant: A compendium of environmental laws and guidance. Environmental Restoration Program  

Science Conference Proceedings (OSTI)

Section 121 of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) of 1980 specifies that remedial actions for cleanup of hazardous substances found at sites placed on the National Priorities List (NPL) by the US Environmental Protection Agency (EPA) must comply with applicable or relevant and appropriate requirements (ARARs) or standards under federal and state environmental laws. To date, the US Department of Energy (DOE) Paducah Gaseous Diffusion Plant (PGDP) has not been on the NPL. Although DOE and EPA have entered into an Administrative Consent Order (ACO), the prime regulatory authority for cleanup at PGDP will be the Resource Conservation and Recovery Act (RCRA). This report supplies a preliminary list of available federal and state ARARs that might be considered for remedial response at PGDP in the event that the plant becomes included on the NPL or the ACO is modified to include CERCLA cleanup. A description of the terms ``applicable`` and ``relevant and appropriate`` is provided, as well as definitions of chemical-, location-, and action-specific ARARS. ARARs promulgated by the federal government and by the state of Kentucky are listed in tables. In addition, the major provisions of RCRA, the Safe Drinking Water Act, the Clean Water Act, the Clean Air Act, and other acts, as they apply to hazardous and radioactive waste cleanup, are discussed.

Etnier, E.L.; Eaton, L.A. [Oak Ridge National Lab., TN (United States)

1992-03-01T23:59:59.000Z

274

Model of leaf photosynthesis and the effects of simple gaseous sulfur compounds (H/sub 2/S and SO/sub 2/)  

DOE Green Energy (OSTI)

A theoretical development is presented of a leaf model and the effects of simple sulfur compounds (H{sub 2}S and SO{sub 2}) on photosynthesis based upon biochemical mechanisms. The model is developed to interpret short-term fumigation experiments and to use with season-long fumigation experiments to assess the effects of these compounds on growth. The model is designed as a submodel in a growth-and-allocation model of the plant. Included in this development are an analysis of the diffusion of CO{sub 2} and sulfur compound into the leaf, enzymatic interactions of sulfur in dark and light reactions of photosynthesis, temperature dependence of the kinetics and denaturization of enzymes, metabolism of sulfur compounds, and a hypothesis for the long-term effects of sulfur compounds. Enhanced photosynthesis at low H{sub 2}S levels, depression of photosynthesis at high H/sub 2/S levels, threshold to effects of sulfur pollutants, and the nature of the temperature dependence of photosynthesis are explained. Parameters in the model for sugar beets from data in the literature and from experiments funded through LLL were used. The properties of the model were analyzed. Data and experiments still required, sensitivities of the model to parameters and variables, implications to assessments, and the setting of standards for gaseous pollutants, are discussed.

Kercher, J.R.

1978-08-10T23:59:59.000Z

275

Thermal Discharges from Paducah Gaseous Diffusion Plant Outfalls: Impacts on Stream Temperatures and Fauna of Little Bayou and Big Bayou Creeks  

SciTech Connect

The development of a biological monitoring plan for the receiving streams of the Paducah Gaseous Diffusion Plant (PGDP) began in the late 1980s, because of an Agreed Order (AO) issued in September 1987 by the Kentucky Division of Water (KDOW). Five years later, in September 1992, more stringent effluent limitations were imposed upon the PGDP operations when the KDOW reissued Kentucky Pollutant Discharge Elimination System permit No. KY 0004049. This action prompted the US Department of Energy (DOE) to request a stay of certain limits contained in the permit. An AO is being negotiated between KDOW, the United States Enrichment Corporation (USEC), and DOE that will require that several studies be conducted, including this stream temperature evaluation study, in an effort to establish permit limitations. All issues associated with this AO have been resolved, and the AO is currently being signed by all parties involved. The proposed effluent temperature limit is 89 F (31.7C) as a mean monthly temperature. In the interim, temperatures are not to exceed 95 F (35 C) as a monthly mean or 100 F (37.8 C) as a daily maximum. This study includes detailed monitoring of instream temperatures, benthic macroinvertebrate communities, fish communities, and a laboratory study of thermal tolerances.

Roy, W.K.

1999-01-01T23:59:59.000Z

276

Atmospheric mercury in Changbai Mountain area, northeastern China I. The seasonal distribution pattern of total gaseous mercury and its potential sources  

SciTech Connect

An intensive field campaign for the measurement of total gaseous mercury (TGM) concentrations in ambient air was conducted in Changbai Mountain area from 5 August 2005 to 5 July 2006 using an automatic atmospheric mercury analyzer (Tekran 2537A), which was the first time TGM was monitored at a remote area in northeastern China. 99% of the hourly TGM concentrations fell between 1.28 and 9.49 ng m{sup -3} with an annual arithmetic mean of 3.58{+-}1.78 ng m{sup -3}, which was significantly elevated compared to values obtained in remote areas of Europe and North America. Seasonal mean TGM concentrations displayed a descending trend as follows: winter, spring, fall, and summer. Compared to spring/winter, TGM concentrations were lower in the summer/fall but the standard deviation (SD) of TGM levels was higher and indicated a correlation with anthropogenic emissions. TGM concentrations showed seasonal differences with respect to meteorological parameters: TGM levels in spring/winter were most correlated with wind speed, and correlated with solar radiation only in the winter, while TGM levels in summer/fall periods were most correlated with air temperature. There was a strong diurnal variation of seasonal TGM with significantly higher concentrations in daytime/nighttime compared to the early morning. The seasonal diel TGM pattern indicated regional biofuel and coal combustion were the primary mercury sources.

Wan Qi [State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002 (China); Graduate University of Chinese Academy of Sciences, Beijing 100049 (China); Feng Xinbin [State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002 (China)], E-mail: fengxinbin@vip.skleg.cn; Lu, Julia [Department of Chemistry and Biology, Ryerson University, Toronto, Ont., M5B 2K3 (Canada)], E-mail: Julialu@ryerson.ca; Zheng Wei [State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002 (China); Graduate University of Chinese Academy of Sciences, Beijing 100049 (China); Song Xinjie [Department of Chemistry and Biology, Ryerson University, Toronto, Ont., M5B 2K3 (Canada); Han Shijie; Xu Hao [Open Research Station of Changbai Mountain Forest Ecosystems, Chinese Academy of Sciences, Yanbian 133613 (China)

2009-04-15T23:59:59.000Z

277

Review of the Department of Energy Office of Environmental Management Assessment of the Portsmouth/Paducah Project Office Oversight of the Portsmouth Gaseous Diffusion Plant Criticality Safety Program, May 2012  

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

Department of Energy Department of Energy Office of Environmental Management Assessment of the Portsmouth/Paducah Project Office Oversight of the Portsmouth Gaseous Diffusion Plant Criticality Safety Program May 2012 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy i Table of Contents 1.0 Purpose ................................................................................................................................................... 1 2.0 Background ............................................................................................................................................ 1 3.0 Scope ...................................................................................................................................................... 2

278

PUMP FOR GASEOUS WORKING FLUIDS  

DOE Patents (OSTI)

A gas pump having a substantially constant rate of flow and a relatively efficient punnping action is described. A number of flexible plates disposed longitudinally in and in contact with a duct are caused to oscillate transversly so as to produce wave-llke deformations of the plates. These deformations are mechanically produced by pushrods and an eccentric gearing arrangement, and are so synchronized that the waves travel from the inlet to the outlet of the duct, and, in so doing, move the gas by positive displacement.

Lipscomb, R.

1948-12-14T23:59:59.000Z

279

HIGH ENERGY GASEOUS DISCHARGE DEVICES  

DOE Patents (OSTI)

The high-energy electrical discharge device described comprises an envelope, a pair of main discharge electrodes supported in opposition in the envelope, and a metallic shell symmetrically disposed around and spaced from the discharge path between the electrodes. The metallic shell comprises a first element of spaced helical turns of metallic material and a second element of spaced helical turns of methllic material insulatedly supported in superposition outside the first element and with the turns overlapping the gap between the turns of the first element.

Josephson, V.

1960-02-16T23:59:59.000Z

280

ENZYME ACTIVITY PROBE AND GEOCHEMICAL ASSESSMENT FOR POTENTIAL AEROBIC COMETABOLISM OF TRICHLOROETHENE IN GROUNDWATER OF THE NORTHWEST PLUME, PADUCAH GASEOUS DIFFUSION PLANT, KENTUCKY  

Science Conference Proceedings (OSTI)

The overarching objective of the Paducah Gaseous Diffusion Plant (PGDP) enzyme activity probe (EAP) effort is to determine if aerobic cometabolism is contributing to the attenuation of trichloroethene (TCE) and other chlorinated solvents in the contaminated groundwater beneath PGDP. The site-specific objective for the EAP assessment is to identify if key metabolic pathways are present and expressed in the microbial community--namely the pathways that are responsible for degradation of methane and aromatic (e.g. toluene, benzene, phenol) substrates. The enzymes produced to degrade methane and aromatic compounds also break down TCE through a process known as cometabolism. EAPs directly measure if methane and/or aromatic enzyme production pathways are operating and, for the aromatic pathways, provide an estimate of the number of active organisms in the sampled groundwater. This study in the groundwater plumes at PGDP is a major part of a larger scientific effort being conducted by Interstate Technology and Regulatory Council (ITRC), U.S. Department of Energy (DOE) Office of Environmental Management (EM), Savannah River National Laboratory (SRNL), and North Wind Inc. in which EAPs are being applied to contaminated groundwater from diverse hydrogeologic and plume settings throughout the U.S. to help standardize their application as well as their interpretation. While EAP data provide key information to support the site specific objective for PGDP, several additional lines of evidence are being evaluated to increase confidence in the determination of the occurrence of biodegradation and the rate and sustainability of aerobic cometabolism. These complementary efforts include: (1) Examination of plume flowpaths and comparison of TCE behavior to 'conservative' tracers in the plume (e.g., {sup 99}Tc); (2) Evaluation of geochemical conditions throughout the plume; and (3) Evaluation of stable isotopes in the contaminants and their daughter products throughout the plume. If the multiple lines of evidence support the occurrence of cometabolism and the potential for the process to contribute to temporal and spatial attenuation of TCE in PGDP groundwater, then a follow-up enzyme probe microcosm study to better estimate biological degradation rate(s) is warranted.

Looney, B; M. Hope Lee, M; S. K. Hampson, S

2008-06-27T23:59:59.000Z

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Fissible Deposit Characterization at the Former Oak Ridge K-25 Gaseous Diffusion Plant by {sup 252}CF-Source-Driven Measurements  

Science Conference Proceedings (OSTI)

The Deposit Removal Project was undertaken with the support of the U. S. Department of Energy at the East Tennessee Technology Park (ETTP) formerly the Oak Ridge K-25 Site. The project team performed the safe removal of the hydrated uranyl fluoride (UO{sub 2}F{sub 2}) deposits from the K-29 Building of the former Oak Ridge Gaseous Diffusion Plant. The deposits had developed as a result of air leakage into UF{sub 6} gas process pipes; UO{sub 2}F{sub 2} became hydrated by moisture from the air and deposited inside the pipes. The mass, its distribution, and the hydrogen content [that is, the ratio of H to U (H/U)], were the key parameters that controlled the nuclear criticality safety of the deposits. Earlier gamma-ray spectrometry measurements in K-29 had identified the largest deposits in the building. The first and third largest deposits in the building were measured in this program. The first deposit, found in the Unit 2, Cell 7, B-Line Outlet process pipe (called the ''Hockey Stick'') was about 1,300 kg ({+-} 50% uncertainty) at 3.34 wt% {sup 235}U enrichment ({+-}50% uncertainty) and according to the gamma-ray spectroscopy was uniformly distributed. The second deposit (the third-largest deposit in the building), found in the Unit 2, Cell 6, A-Line Outlet process pipe (called the ''Tee-Pipe''), had a uranium deposit estimated to be about 240 kg ({+-} 50% uncertainty) at 3.4 wt % {sup 235}U enrichment ({+-} 20% uncertainty). Before deposit removal activities began, the Deposit Removal Project team needed to survey the inside of the pipes intrusively to assess the nuclear criticality safety of the deposits. Therefore, the spatial distribution of the deposits, the total uranium deposit mass, and the moderation level resulting from hydration of the deposits, all of which affect nuclear criticality safety were required. To perform the task safely and effectively, the Deposit Removal Project team requested that Oak Ridge National Laboratory (ORNL) characterize the two largest deposits with the {sup 252}Cf-source-driven transmission (CFSDT) technique, an active neutron interrogation method developed for use at the Oak Ridge Y-12 Plant to identify nuclear weapons components in containers. The active CFSDT measurement technique uses CFSDT time-of-flight measurements of prompt neutrons and gamma rays from an externally introduced {sup 252}Cf source.

Hannon, T.F.; Mihalczo, J.T.; Mullens, J.A.; Uckan, T.; Valentine, T.E.; Wyatt, M.S.

1998-05-01T23:59:59.000Z

282

A TECHNICAL ASSESSMENT OF THE CURRENT WATER POLICY BOUNDARY AT U.S. DEPARTMENT OF ENERGY, PADUCAH GASEOUS DIFFUSION PLANT, PADUCAH, KENTUCKY  

Science Conference Proceedings (OSTI)

In 1988, groundwater contaminated with trichloroethene (TCE) and technetium-99 (Tc-99) was identified in samples collected from residential water wells withdrawing groundwater from the Regional Gravel Aquifer (RGA) north of the Paducah Gaseous Diffusion Plant (PGDP) facility. In response, the U.S. Department of Energy (DOE) provided temporary drinking water supplies to approximately 100 potentially affected residents by initially supplying bottled water, water tanks, and water-treatment systems, and then by extending municipal water lines, all at no cost, to those persons whose wells could be affected by contaminated groundwater. The Water Policy boundary was established in 1993. In the Policy, DOE agreed to pay the reasonable monthly cost of water for homes and businesses and, in exchange, many of the land owners signed license agreements committing to cease using the groundwater via rural water wells. In 2012, DOE requested that Oak Ridge Associated Universities (ORAU), managing contractor of Oak Ridge Institute for Science and Education (ORISE), provide an independent assessment of the quality and quantity of the existing groundwater monitoring data and determine if there is sufficient information to support a modification to the boundary of the current Water Policy. As a result of the assessment, ORAU concludes that sufficient groundwater monitoring data exists to determine that a shrinkage and/or shift of the plume(s) responsible for the initial development of this policy has occurred. Specifically, there is compelling evidence that the TCE plume is undergoing shrinkage due to natural attenuation and associated degradation. The plume shrinkage (and migration) has also been augmented in local areas where large volumes of groundwater were recovered by pump-and treat remedial systems along the eastern and western boundaries of the Northwest Plume, and in other areas where pump-and-treat systems have been deployed by DOE to remove source contaminants. The available evidence supports adjusting the western and northwestern Water Policy boundary. Based on the historical and modeled hydrogeological data reflecting past flow and plume attenuation, along with associated plume migration toward the northeast, the establishment of a new boundary along the westernmost margin of the earliest indication of the TCE plume is proposed and justified on hydrogeological grounds. Approximately 30% of the original area would remain within the adjusted Water Policy area west and northwest of the PGDP facility. This modification would release about 70% of the area, although individual properties would overlap the new boundary.

None

2012-12-13T23:59:59.000Z

283

Dose Modeling Evaluations and Technical Support Document For the Authorized Limits Request for the DOE-Owned Property Outside the Limited Area, Paducah Gaseous Diffusion Plant Paducah, Kentucky  

SciTech Connect

Environmental assessments and remediation activities are being conducted by the U.S. Department of Energy (DOE) at the Paducah Gaseous Diffusion Plant (PGDP), Paducah, Kentucky. The Oak Ridge Institute for Science and Education (ORISE), a DOE prime contractor, was contracted by the DOE Portsmouth/Paducah Project Office (DOE-PPPO) to conduct radiation dose modeling analyses and derive single radionuclide soil guidelines (soil guidelines) in support of the derivation of Authorized Limits (ALs) for 'DOE-Owned Property Outside the Limited Area' ('Property') at the PGDP. The ORISE evaluation specifically included the area identified by DOE restricted area postings (public use access restrictions) and areas licensed by DOE to the West Kentucky Wildlife Management Area (WKWMA). The licensed areas are available without restriction to the general public for a variety of (primarily) recreational uses. Relevant receptors impacting current and reasonably anticipated future use activities were evaluated. In support of soil guideline derivation, a Conceptual Site Model (CSM) was developed. The CSM listed radiation and contamination sources, release mechanisms, transport media, representative exposure pathways from residual radioactivity, and a total of three receptors (under present and future use scenarios). Plausible receptors included a Resident Farmer, Recreational User, and Wildlife Worker. single radionuclide soil guidelines (outputs specified by the software modeling code) were generated for three receptors and thirteen targeted radionuclides. These soil guidelines were based on satisfying the project dose constraints. For comparison, soil guidelines applicable to the basic radiation public dose limit of 100 mrem/yr were generated. Single radionuclide soil guidelines from the most limiting (restrictive) receptor based on a target dose constraint of 25 mrem/yr were then rounded and identified as the derived soil guidelines. An additional evaluation using the derived soil guidelines as inputs into the code was also performed to determine the maximum (peak) dose for all receptors. This report contains the technical basis in support of the DOE?s derivation of ALs for the 'Property.' A complete description of the methodology, including an assessment of the input parameters, model inputs, and results is provided in this report. This report also provides initial recommendations on applying the derived soil guidelines.

Boerner, A. J. [Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN (United States). Independent Environmental Assessment and Verification Program; Maldonado, D. G. [Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN (United States). Independent Environmental Assessment and Verification Program; Hansen, Tom [Ameriphysics, LLC (United States)

2012-09-01T23:59:59.000Z

284

Computational Geosciences 1 (1997) 271288 271 Pulsing of multiple nutrients as a strategy to achieve large  

E-Print Network (OSTI)

Bioremediation of Petroleum Hydrocar- bon and Other Organic Compounds, Vol. 3 (pp 3­18). Battelle Press, Columbus sources of MTBE in groundwater in the United-States, 1993­1994. Environ. Sci. Technol. 30: 1721

Clement, Prabhakar

285

Process for producing enriched uranium having a {sup 235}U content of at least 4 wt. % via combination of a gaseous diffusion process and an atomic vapor laser isotope separation process to eliminate uranium hexafluoride tails storage  

DOE Patents (OSTI)

An uranium enrichment process capable of producing an enriched uranium, having a {sup 235}U content greater than about 4 wt. %, is disclosed which will consume less energy and produce metallic uranium tails having a lower {sup 235}U content than the tails normally produced in a gaseous diffusion separation process and, therefore, eliminate UF{sub 6} tails storage and sharply reduce fluorine use. The uranium enrichment process comprises feeding metallic uranium into an atomic vapor laser isotope separation process to produce an enriched metallic uranium isotopic mixture having a {sup 235} U content of at least about 2 wt. % and a metallic uranium residue containing from about 0.1 wt. % to about 0.2 wt. % {sup 235} U; fluorinating this enriched metallic uranium isotopic mixture to form UF{sub 6}; processing the resultant isotopic mixture of UF{sub 6} in a gaseous diffusion process to produce a final enriched uranium product having a {sup 235}U content of at least 4 wt. %, and up to 93.5 wt. % or higher, of the total uranium content of the product, and a low {sup 235}U content UF{sub 6} having a {sup 235}U content of about 0.71 wt. % of the total uranium content of the low {sup 235}U content UF{sub 6}; and converting this low {sup 235}U content UF{sub 6} to metallic uranium for recycle to the atomic vapor laser isotope separation process. 4 figs.

Horton, J.A.; Hayden, H.W. Jr.

1995-05-30T23:59:59.000Z

286

Process for producing enriched uranium having a .sup.235 U content of at least 4 wt. % via combination of a gaseous diffusion process and an atomic vapor laser isotope separation process to eliminate uranium hexafluoride tails storage  

DOE Patents (OSTI)

An uranium enrichment process capable of producing an enriched uranium, having a .sup.235 U content greater than about 4 wt. %, is disclosed which will consume less energy and produce metallic uranium tails having a lower .sup.235 U content than the tails normally produced in a gaseous diffusion separation process and, therefore, eliminate UF.sub.6 tails storage and sharply reduce fluorine use. The uranium enrichment process comprises feeding metallic uranium into an atomic vapor laser isotope separation process to produce an enriched metallic uranium isotopic mixture having a .sup.235 U content of at least about 2 wt. % and a metallic uranium residue containing from about 0.1 wt. % to about 0.2 wt. % .sup.235 U; fluorinating this enriched metallic uranium isotopic mixture to form UF.sub.6 ; processing the resultant isotopic mixture of UF.sub.6 in a gaseous diffusion process to produce a final enriched uranium product having a .sup.235 U content of at least 4 wt. %, and up to 93.5 wt. % or higher, of the total uranium content of the product, and a low .sup.235 U content UF.sub.6 having a .sup.235 U content of about 0.71 wt. % of the total uranium content of the low .sup.235 U content UF.sub.6 ; and converting this low .sup.235 U content UF.sub.6 to metallic uranium for recycle to the atomic vapor laser isotope separation process.

Horton, James A. (Livermore, CA); Hayden, Jr., Howard W. (Oakridge, TN)

1995-01-01T23:59:59.000Z

287

Table Definitions, Sources, and Explanatory Notes  

Gasoline and Diesel Fuel Update (EIA)

Production Production Definitions Key Terms Definition Asphalt A dark-brown-to-black cement-like material containing bitumens as the predominant constituent obtained by petroleum processing; used primarily for road construction. It includes crude asphalt as well as the following finished products: cements, fluxes, the asphalt content of emulsions (exclusive of water), and petroleum distillates blended with asphalt to make cutback asphalts. Note: The conversion factor for asphalt is 5.5 barrels per short ton. Barrel A unit of volume equal to 42 U.S. gallons. Butane (C4H10) A normally gaseous straight-chain or branch-chain hydrocarbon extracted from natural gas or refinery gas streams. It includes isobutane and normal butane and is designated in ASTM Specification D1835 and Gas Processors Association Specifications for commercial butane.

288

Table Definitions, Sources, and Explanatory Notes  

Gasoline and Diesel Fuel Update (EIA)

Receipts by Pipeline, Tanker, and Barge Between PAD Districts Receipts by Pipeline, Tanker, and Barge Between PAD Districts Definitions Key Terms Definition Asphalt A dark-brown-to-black cement-like material containing bitumens as the predominant constituent obtained by petroleum processing; used primarily for road construction. It includes crude asphalt as well as the following finished products: cements, fluxes, the asphalt content of emulsions (exclusive of water), and petroleum distillates blended with asphalt to make cutback asphalts. Note: The conversion factor for asphalt is 5.5 barrels per short ton. Barrel A unit of volume equal to 42 U.S. gallons. Butane (C4H10) A normally gaseous straight-chain or branch-chain hydrocarbon extracted from natural gas or refinery gas streams. It includes isobutane and normal butane and is designated in ASTM Specification D1835 and Gas Processors Association Specifications for commercial butane.

289

Transportation Impact Assessment for Shipment of Uranium Hexafluoride (UF<sub>6</sub>) Cylinders from the East Tennessee Technology Park to the Portsmouth and Paducah Gaseous Diffusion  

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

2 2 Transportation Impact Assessment for Shipment of Uranium Hexafluoride (UF 6 ) Cylinders from the East Tennessee Technology Park to the Portsmouth and Paducah Gaseous Diffusion Plants Environmental Assessment Division Argonne National Laboratory Operated by The University of Chicago, under Contract W-31-109-Eng-38, for the United States Department of Energy Argonne National Laboratory Argonne National Laboratory, with facilities in the states of Illinois and Idaho, is owned by the United States Government and operated by The University of Chicago under the provisions of a contract with the Department of Energy. This technical memorandum is a product of Argonne's Environmental Assessment Division (EAD). For information on the division's scientific and engineering

290

ECO2M: A TOUGH2 Fluid Property Module for Mixtures of Water, NaCl, and CO2, Including Super- and Sub-Critical Conditions, and Phase Change Between Liquid and Gaseous CO2  

SciTech Connect

ECO2M is a fluid property module for the TOUGH2 simulator (Version 2.0) that was designed for applications to geologic storage of CO{sub 2} in saline aquifers. It includes a comprehensive description of the thermodynamics and thermophysical properties of H{sub 2}O - NaCl - CO{sub 2} mixtures, that reproduces fluid properties largely within experimental error for temperature, pressure and salinity conditions in the range of 10 C {le} T {le} 110 C, P {le} 600 bar, and salinity from zero up to full halite saturation. The fluid property correlations used in ECO2M are identical to the earlier ECO2N fluid property package, but whereas ECO2N could represent only a single CO{sub 2}-rich phase, ECO2M can describe all possible phase conditions for brine-CO{sub 2} mixtures, including transitions between super- and sub-critical conditions, and phase change between liquid and gaseous CO{sub 2}. This allows for seamless modeling of CO{sub 2} storage and leakage. Flow processes can be modeled isothermally or non-isothermally, and phase conditions represented may include a single (aqueous or CO{sub 2}-rich) phase, as well as two-and three-phase mixtures of aqueous, liquid CO{sub 2} and gaseous CO{sub 2} phases. Fluid phases may appear or disappear in the course of a simulation, and solid salt may precipitate or dissolve. TOUGH2/ECO2M is upwardly compatible with ECO2N and accepts ECO2N-style inputs. This report gives technical specifications of ECO2M and includes instructions for preparing input data. Code applications are illustrated by means of several sample problems, including problems that had been previously solved with TOUGH2/ECO2N.

Pruess, K.

2011-04-01T23:59:59.000Z

291

Refurbishment of uranium hexafluoride cylinder storage yards C-745-K, L, M, N, and P and construction of a new uranium hexafluoride cylinder storage yard (C-745-T) at the Paducah Gaseous Diffusion Plant, Paducah, Kentucky  

Science Conference Proceedings (OSTI)

The Paducah Gaseous Diffusion Plant (PGDP) is a uranium enrichment facility owned by the US Department of Energy (DOE). A residual of the uranium enrichment process is depleted uranium hexafluoride (UF6). Depleted UF6, a solid at ambient temperature, is stored in 32,200 steel cylinders that hold a maximum of 14 tons each. Storage conditions are suboptimal and have resulted in accelerated corrosion of cylinders, increasing the potential for a release of hazardous substances. Consequently, the DOE is proposing refurbishment of certain existing yards and construction of a new storage yard. This environmental assessment (EA) evaluates the impacts of the proposed action and no action and considers alternate sites for the proposed new storage yard. The proposed action includes (1) renovating five existing cylinder yards; (2) constructing a new UF6 storage yard; handling and onsite transport of cylinders among existing yards to accommodate construction; and (4) after refurbishment and construction, restacking of cylinders to meet spacing and inspection requirements. Based on the results of the analysis reported in the EA, DOE has determined that the proposed action is not a major Federal action that would significantly affect the quality of the human environment within the context of the National Environmental Policy Act of 1969. Therefore, DOE is issuing a Finding of No Significant Impact. Additionally, it is reported in this EA that the loss of less than one acre of wetlands at the proposed project site would not be a significant adverse impact.

NONE

1996-07-01T23:59:59.000Z

292

Table Definitions, Sources, and Explanatory Notes  

U.S. Energy Information Administration (EIA)

... or through a Fischer-Tropsch type process, in which the straight-chained paraffin series predominates. This includes all marketable wax, ...

293

Controllable Nanometer-sized Valve Using a Zeolite Vaccine for ...  

easily allowing straight-chain than branched hydro-carbons to pass through, for example. When used for catalytic reactions, they can be intermediate or

294

INDEPENDENT TECHNICAL REVIEW OF THE FOCUSED FEASIBILITY STUDY AND PROPOSED PLAN FOR DESIGNATED SOLID WASTE MANAGEMENT UNITS CONTRIBUTING TO THE SOUTHWEST GROUNDWATER PLUME AT THE PADUCAH GASEOUS DIFFUSION PLANT  

SciTech Connect

The U. S. Department of Energy (DOE) is currently developing a Proposed Plan (PP) for remediation of designated sources of chlorinated solvents that contribute contamination to the Southwest (SW) Groundwater Plume at the Paducah Gaseous Diffusion Plant (PGDP), in Paducah, KY. The principal contaminants in the SW Plume are trichloroethene (TCE) and other volatile organic compounds (VOCs); these industrial solvents were used and disposed in various facilities and locations at PGDP. In the SW plume area, residual TCE sources are primarily in the fine-grained sediments of the Upper Continental Recharge System (UCRS), a partially saturated zone that delivers contaminants downward into the coarse-grained Regional Gravel Aquifer (RGA). The RGA serves as the significant lateral groundwater transport pathway for the plume. In the SW Plume area, the four main contributing TCE source units are: (1) Solid Waste Management Unit (SWMU) 1 / Oil Landfarm; (2) C-720 Building TCE Northeast Spill Site (SWMU 211A); (3) C-720 Building TCE Southeast Spill Site (SWMU 211B); and (4) C-747 Contaminated Burial Yard (SWMU 4). The PP presents the Preferred Alternatives for remediation of VOCs in the UCRS at the Oil Landfarm and the C-720 Building spill sites. The basis for the PP is documented in a Focused Feasibility Study (FFS) (DOE, 2011) and a Site Investigation Report (SI) (DOE, 2007). The SW plume is currently within the boundaries of PGDP (i.e., does not extend off-site). Nonetheless, reasonable mitigation of the multiple contaminant sources contributing to the SW plume is one of the necessary components identified in the PGDP End State Vision (DOE, 2005). Because of the importance of the proposed actions DOE assembled an Independent Technical Review (ITR) team to provide input and assistance in finalizing the PP.

Looney, B.; Eddy-Dilek, C.; Amidon, M.; Rossabi, J.; Stewart, L.

2011-05-31T23:59:59.000Z

295

Establishing Measurement Traceability for Gaseous Mercury ...  

Science Conference Proceedings (OSTI)

... NIST already provides mercury traceability to the SI for many solid- and liquid-matrix materials, including fossil fuels, through the SRM program, but ...

2012-10-01T23:59:59.000Z

296

NOVEL TECHNOLOGIES FOR GASEOUS CONTAMINANTS CONTROL  

Science Conference Proceedings (OSTI)

The overall objective of this project is to develop technologies for cleaning/conditioning the syngas from an integrated gasification combined cycle (IGCC) system to meet the tolerance limits for contaminants such as H{sub 2}S, COS, NH{sub 3}, HCN, HCl, and alkali for fuel cell and chemical production applications. RTI's approach is to develop a modular system that (1) removes reduced sulfur species to sub-ppm levels using a hybrid process consisting of a polymer membrane and a regenerable ZnO-coated monolith or a mixed metal oxide sorbent; (2) removes hydrogen chloride vapors to sub-ppm levels using an inexpensive, high-surface area material; and (3) removes NH{sub 3} with acidic adsorbents. RTI is working with MEDAL, Inc., and North Carolina State University (NCSU) to develop polymer membrane technology for bulk removal of H{sub 2}S from syngas. These membranes are being engineered to remove the acid gas components (H{sub 2}S, CO{sub 2}, NH{sub 3}, and H{sub 2}O) from syngas by focusing on the ''solubility selectivity'' of the novel polymer compositions. The desirable components of the syngas (H{sub 2} and CO) are maintained at high-pressure conditions as a non-permeate stream while the impurities are transported across the membrane to the low pressure side. RTI tested commercially available and novel materials from MEDAL using a high-temperature, high-pressure (HTHP) permeation apparatus. H{sub 2}S/H{sub 2} selectivities >30 were achieved, although there was a strong negative dependence with temperature. MEDAL believes that all the polymer compositions tested so far can be prepared as hollow fiber membrane modules using the existing manufacturing technology. For fuel cell and chemical applications, additional sulfur removal (beyond that achievable with the membranes) is required. To overcome limitations of conventional ZnO pellets, RTI is testing a monolith with a thin coating of high surface area zinc-oxide based materials. Alternatively, a regenerable sorbent developed by DOE/NETL (RVS-1) is being evaluated for this application. A multi-cycle test of 2-in. (5-cm) diameter monolith samples demonstrated that HCl vapors is being accomplished by low-cost materials that combine the known effectiveness of sodium carbonate as an active matrix used with enhanced surface area supports for greater reactivity and capacity at the required operating temperatures. RTI is working with SRI International on this task. Sorbents prepared using diatomaceous earth and sepiolite, impregnated with sodium carbonate achieved steady-state HCl level <100 ppb (target is 10 ppb). Research is continuing to optimize the impregnation and calcination procedures to provide an optimum pore size distribution and other properties. RTI and SRI International have established the feasibility of a process to selectively chemisorb NH3 from syngas on high surface area molecular sieve adsorbents at high temperatures by conducting a series of temperature-programmed reactions at 225 C (437 F). Significant levels of NH{sub 3} were adsorbed on highly acidic adsorbents; the adsorbed NH{sub 3} was subsequently recovered by heating the adsorbent and the regenerated adsorbent was reused. A comprehensive technical and economic evaluation of this modular gas cleaning process was conducted by Nexant to compare capital and operating cost with existing amine based processes. Nexant estimated a total installed cost of $42 million for the RTI process for a 500 MWe IGCC plant based on its current state of development. By comparison, Nexant estimated the installed cost for an equivalent sized plant based on the Rectisol process (which would achieve the same sulfur removal specification) to be $75 million. Thus the RTI process is economically competitive with a state-of-the-art process for syngas cleanup.

B.S. Turk; T. Merkel; A. Lopez-Ortiz; R.P. Gupta; J.W. Portzer; G.N. Krishnan; B.D. Freeman; G.K. Fleming

2001-09-30T23:59:59.000Z

297

GASEOUS REDUCTION OF AN ALLOY OXIDE  

DOE Green Energy (OSTI)

Ni(Al, Fe){sub 2}O{sub 4} ceramic alloys were reduced by hydrogen gas at a pressure of 1 atm, and at temperatures between 450 and 800 C. The reaction rate was determined from the rate of advance of the porous metal product layer-unreduced oxide interface. A simple analysis was presented permitting assessment of both the interface reaction resistance and the gas transport resistant through the porous product scales. The reaction was under mixed control in all conditions studied. In a range of temperatures and reaction times, preferred grain-boundary attack was observed. The conditions under which this was observed depended strongly on the Al{sup 3+} content of the ceramic alloy. Al{sup 3+} also lowered the interface reaction rate and inhibited scale coarsening by formation of dispersed unreduced phases in the product scales.

Allender, Jeffrey S.; DeJonghe, Lutgard C.

1980-09-01T23:59:59.000Z

298

Former Worker Medical Screening Program - Portsmouth Gaseous...  

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

Construction Workers Former Worker Medical Screening Program (FWP) Project Name: Building Trades National Medical Screening Program Covered DOE Site: Portsmouth Worker Population...

299

Gaseous Diffusion Plant Production Workers Needs Assessment  

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

been identified at Oak Ridge. The risk mapping sessions highlighted the instrument mechanics as a job classification with significant mercury exposure. Solvents Solvent...

300

Former Worker Medical Screening Program - Portsmouth Gaseous...  

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

Jim Frederick Co-Principal Investigator: Steven Markowitz, MD Toll-free Telephone: (888) 241-1199 Local Outreach Office: Jeanne Cisco 2288 Wakefield Mound Road Piketon, OH 45661...

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

NOVEL TECHNOLOGIES FOR GASEOUS CONTAMINANTS CONTROL  

SciTech Connect

The overall objective of this project is to develop technologies for cleaning/conditioning the syngas from an integrated gasification combined cycle (IGCC) system to meet the tolerance limits for contaminants such as H{sub 2}S, COS, NH{sub 3}, HCN, HCl, and alkali for fuel cell and chemical production applications. RTI's approach is to develop a modular system that (1) removes reduced sulfur species to sub-ppm levels using a hybrid process consisting of a polymer membrane and a regenerable ZnO-coated monolith or a mixed metal oxide sorbent; (2) removes hydrogen chloride vapors to sub-ppm levels using an inexpensive, high-surface area material; and (3) removes NH{sub 3} with acidic adsorbents. RTI is working with MEDAL, Inc., and North Carolina State University (NCSU) to develop polymer membrane technology for bulk removal of H{sub 2}S from syngas. These membranes are being engineered to remove the acid gas components (H{sub 2}S, CO{sub 2}, NH{sub 3}, and H{sub 2}O) from syngas by focusing on the ''solubility selectivity'' of the novel polymer compositions. The desirable components of the syngas (H{sub 2} and CO) are maintained at high-pressure conditions as a non-permeate stream while the impurities are transported across the membrane to the low pressure side. RTI tested commercially available and novel materials from MEDAL using a high-temperature, high-pressure (HTHP) permeation apparatus. H{sub 2}S/H{sub 2} selectivities >30 were achieved, although there was a strong negative dependence with temperature. MEDAL believes that all the polymer compositions tested so far can be prepared as hollow fiber membrane modules using the existing manufacturing technology. For fuel cell and chemical applications, additional sulfur removal (beyond that achievable with the membranes) is required. To overcome limitations of conventional ZnO pellets, RTI is testing a monolith with a thin coating of high surface area zinc-oxide based materials. Alternatively, a regenerable sorbent developed by DOE/NETL (RVS-1) is being evaluated for this application. A multi-cycle test of 2-in. (5-cm) diameter monolith samples demonstrated that <0.5 ppm sulfur can be achieved. Removal of HCl vapors is being accomplished by low-cost materials that combine the known effectiveness of sodium carbonate as an active matrix used with enhanced surface area supports for greater reactivity and capacity at the required operating temperatures. RTI is working with SRI International on this task. Sorbents prepared using diatomaceous earth and sepiolite, impregnated with sodium carbonate achieved steady-state HCl level <100 ppb (target is 10 ppb). Research is continuing to optimize the impregnation and calcination procedures to provide an optimum pore size distribution and other properties. RTI and SRI International have established the feasibility of a process to selectively chemisorb NH3 from syngas on high surface area molecular sieve adsorbents at high temperatures by conducting a series of temperature-programmed reactions at 225 C (437 F). Significant levels of NH{sub 3} were adsorbed on highly acidic adsorbents; the adsorbed NH{sub 3} was subsequently recovered by heating the adsorbent and the regenerated adsorbent was reused. A comprehensive technical and economic evaluation of this modular gas cleaning process was conducted by Nexant to compare capital and operating cost with existing amine based processes. Nexant estimated a total installed cost of $42 million for the RTI process for a 500 MWe IGCC plant based on its current state of development. By comparison, Nexant estimated the installed cost for an equivalent sized plant based on the Rectisol process (which would achieve the same sulfur removal specification) to be $75 million. Thus the RTI process is economically competitive with a state-of-the-art process for syngas cleanup.

B.S. Turk; T. Merkel; A. Lopez-Ortiz; R.P. Gupta; J.W. Portzer; G.N. Krishnan; B.D. Freeman; G.K. Fleming

2001-09-30T23:59:59.000Z

302

NOVEL TECHNOLOGIES FOR GASEOUS CONTAMINANTS CONTROL  

Science Conference Proceedings (OSTI)

Overall objective of this project was to develop a technology platform for cleaning/conditioning the syngas from an integrated gasification combined cycle (IGCC) system at elevated temperatures (500-1,000 F) and gasifier pressures to meet the tolerance limits for contaminants, including H{sub 2}S, COS, NH{sub 3}, HCl, Hg, and As. This technology development effort involved progressive development and testing of sorbent/catalytic materials and associated processes through laboratory, bench, pilot, and demonstration testing phases, coupled with a comprehensive systems analysis at various stages of development. The development of the regenerable RTI-3 desulfurization sorbent - a highly attrition-resistant, supported ZnO-based material - was the key discovery in this project. RTI-3's high attrition resistance, coupled with its high reactivity, effectively allowed its application in a high-velocity transport reactor system. Production of the RTI-3 sorbent was successfully scaled up to an 8,000-lb batch by Sued-Chemie. In October 2005, RTI obtained U.S Patent 6,951,635 to protect the RTI-3 sorbent technology and won the 2004 R&D 100 Award for development of this material. The RTI-3 sorbent formed the basis for the development of the High-Temperature Desulfurization System (HTDS), a dual-loop transport reactor system for removing the reduced sulfur species from syngas. An 83-foot-tall, pilot HTDS unit was constructed and commissioned first at ChevronTexaco's gasification site and later at Eastman's gasification plant. At Eastman, the HTDS technology was successfully operated with coal-derived syngas for a total of 3,017 hrs over a 12-month period and consistently reduced the sulfur level to <10 ppmv. The sorbent attrition rate averaged {approx}31 lb/MM lb of circulation. To complement the HTDS technology, which extracts the sulfur from syngas as SO{sub 2}, RTI developed the Direct Sulfur Recovery Process (DSRP). The DSRP, operating at high pressure and high temperature, uses a small slipstream of syngas to catalytically reduce the SO{sub 2} produced in the warm syngas desulfurization process to elemental sulfur. To demonstrate this process at Eastman, RTI constructed and commissioned a skid-mounted pilot DSRP unit. During its 117-h operation, the DSRP system achieved 90% to 98% removal of the inlet sulfur. The DSRP catalyst proved very robust, demonstrating consistent reaction rates in multiple experiments over a 3-year period. Sorbent materials for removing trace NH{sub 3}, Hg, and As impurities from syngas at high temperature and high pressure were developed and tested with real syngas. A Li{sub 4}SiO{sub 4} sorbent for removal of CO{sub 2} from syngas at high temperature was also developed and tested. The Li{sub 4}SiO{sub 4} material demonstrates excellent CO{sub 2} removal, but its regeneration was found to be technically challenging. Additionally, reverse-selective polymer membrane materials were investigated for the bulk removal of CO{sub 2} and H{sub 2}S from syngas. These materials exhibited adequate separation at ambient conditions for these acid gases. Field testing of these membrane modules with real syngas demonstrated potential use for acid-gas separation from syngas. The HTDS/DSRP technologies are estimated to have a significant economic advantage over conventional gas cleanup technologies such as Selexol{trademark} and Rectisol. From a number of system studies, use of HTDS/DSRP is expected to give a 2-3 percentage point increase in the overall IGCC thermal efficiency and a significant reduction in capital cost. Thus, there is significant economic incentive for adaptation of these warm gas cleanup technologies due to significantly increased thermal efficiency and reduction in capital and operating costs. RTI and Eastman are currently in discussions with a number of companies to commercialize this technology.

B. S. Turk; R. P. Gupta; S. Gangwal; L. G. Toy; J. R. Albritton; G. Henningsen; P. Presler-Jur; J. Trembly

2008-04-03T23:59:59.000Z

303

MUTUAL CHARGE NEUTRALIZATION OF GASEOUS IONS (thesis)  

DOE Green Energy (OSTI)

The problem of the bimolecular rate constant, alpha , for the mutual charge neutralization reaction (ion-ion recombination) for ions formed by the vacuum ultraviolet photolysis of nitric oxide is considered. The pressure dependence of alpha over a pressure range of 10 to 600 torr for mixtures of a few hundred microns of NO with He, Ar, Kr, Xe, H/sub 2/, D/sub 2/, and N/sub 2/ was measured. From the low-pressure limit of alpha , the rate constant for charge neutralization in the absence of a third body was found to be k/sub o/ = 2.1 plus or minus 0.4 x 10/sup -7/ cm/sup 3// sec. The high-pressure limit of alpha was estimated to be 2.0 plus or minus 0.5 x 10/sup -6/ cm/sup 3//sec. The third-body efficiencies for promoting the charge-neutralization reaction were measured. The results, relative to He as the third-body gas, are H/sub 2/= 1.4 plus or minus 0.4, D/sub 2/= 1.5 plus or minus 0.4, Ar =3.6 plus or minus 0.8, Kr =4.3 plus or min11.0, N/sub 2/ = 5.2 plus or minus 1.1, and Xe = 6.8 plus or minus 1.5. The average ionic mobility in the gas mixtures is estimated, and the mobilities indicate that at least some of the ions must be present as ion clusters. It is shown that the addition of NO/sub 2/ or H/sub 2/O further lowers the mobility. A detailed calculation of the three-body charge-neutralization process was made using a computer. This calculation considers that the rate of charge neutralization is the rate at which ion pairs are deactivated by collision with the neutral gas molecules to form ion pairs that cannot separate to large distances. The potential between the ions and the neutrals is assumed to be an ion-induced dipole potential with a hard-sphere core. The calculation involves an average over the various angles in the collisions. The predicted values of alpha depend on a parameter of the calculation, but over a wide range of this parameter the predicted relative third-body efficiencies are in reasonable agreement with the experimental values. (auth)

Person, J C

1963-07-11T23:59:59.000Z

304

Prospects for Barium Tagging in Gaseous Xenon  

DOE Green Energy (OSTI)

Tagging events with the coincident detection of a barium ion would greatly reduce the background for a neutrino-less double beta decay search in xenon. This paper describes progress towards realizing this goal. It outlines a source that can produce large quantities of Ba++ in gas, shows that this can be extracted to vacuum, and demonstrates a mechanism by which the Ba++ can be efficiently converted to Ba+ as required for laser identification. It is clear from this study that electrospray is a convenient mechanism for producing Ba++ is gas at atmospheric pressure. It is likely that the source will perform just as effectively at higher pressures. Even though the source region has water vapour and methanol vapour at the 0.3% level, there is no evidence for molecular formation. The use of TEA offers an effective method to achieve the charge state conversion. The overall design of the ion extraction from high pressure to vacuum is very similar to the scheme proposed for the final detector and this appears to work well although the efficiency is not yet determined.

Sinclair, D.; /Carleton U. /TRIUMF; Rollin, E.; /Carleton U.; Smith, J.; /Carleton U.; Mommers, A.; /Ottawa U.; Ackerman, N.; /SLAC; Aharmim, B.; /Laurentian U.; Auger, M.; /Bern U., LHEP; Barbeau, P.S.; /Stanford U., Phys. Dept.; Benitez-Medina, C.; /Colorado State U.; Breidenbach, M.; /SLAC; Burenkov, A.; /Moscow, ITEP; Cook, S.; /SLAC; Coppens, A.; /Carleton U.; Daniels, T.; /Massachusetts U., Amherst; DeVoe, R.; /Stanford U., Phys. Dept.; Dobi, A.; /Maryland U.; Dolinski, M.J.; Donato, K.; /Stanford U., Phys. Dept.; Fairbank, W., Jr.; /Colorado State U.; Farine, J.; /Laurentian U.; Giroux, G.; /Bern U., LHEP /Carleton U. /Stanford U., Phys. Dept. /Carleton U. /Laurentian U. /Carleton U. /SLAC /Indiana U. /Indiana U., CEEM /Korea U. /Stanford U., Phys. Dept. /SLAC /Alabama U. /Colorado State U. /Stanford U., Phys. Dept. /Alabama U. /SLAC /Stanford U., Phys. Dept. /Alabama U. /Massachusetts U., Amherst /SLAC /Alabama U. /SLAC /Maryland U. /Moscow, ITEP /Stanford U., Phys. Dept. /Maryland U. /Bern U., LHEP /Laurentian U. /SLAC /Maryland U.

2012-05-03T23:59:59.000Z

305

Gaseous Sulfate Solubility in Glass: Experimental Method  

SciTech Connect

Sulfate solubility in glass is a key parameter in many commercial glasses and nuclear waste glasses. This report summarizes key publications specific to sulfate solubility experimental methods and the underlying physical chemistry calculations. The published methods and experimental data are used to verify the calculations in this report and are expanded to a range of current technical interest. The calculations and experimental methods described in this report will guide several experiments on sulfate solubility and saturation for the Hanford Waste Treatment Plant Enhanced Waste Glass Models effort. There are several tables of sulfate gas equilibrium values at high temperature to guide experimental gas mixing and to achieve desired SO3 levels. This report also describes the necessary equipment and best practices to perform sulfate saturation experiments for molten glasses. Results and findings will be published when experimental work is finished and this report is validated from the data obtained.

Bliss, Mary

2013-11-30T23:59:59.000Z

306

Independent Oversight Inspection, Portsmouth Gaseous Diffusion...  

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

in August and September 2006. The coordination of emergency plans and procedures among USEC and DOE contractor organizations has successfully integrated the emergency management...

307

Bioelectrochemical Treatment of Gaseous By-products  

monoxide, and can reduce the overall cost of industrial operations. ... use the device for electricity production, the anode is in electrical communic ...

308

NGPL Production, Gaseous Equivalent at Processing Plants  

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

930,320 953,451 1,024,082 1,066,366 1,134,473 1,250,340 1930-2012 930,320 953,451 1,024,082 1,066,366 1,134,473 1,250,340 1930-2012 Alaska 26,332 24,337 22,925 20,835 21,554 21,470 1969-2012 Alaska Onshore 21,470 2012-2012 Alaska State Offshore NA 2012-2012 Federal Offshore Gulf of Mexico 0 0 0 0 0 2007-2011 Louisiana 110,745 94,785 95,359 102,448 95,630 1967-2011 Louisiana Onshore 32,212 2012-2012 Louisiana State Offshore 5,100 2012-2012 New Mexico 96,250 92,579 94,840 91,963 90,291 1967-2011 Oklahoma 96,643 104,689 112,891 120,631 134,032 1967-2011 Texas 387,349 401,503 424,042 433,622 481,308 1967-2011 Texas Onshore 580,033 2012-2012 Texas State Offshore NA 2012-2012 Wyoming 74,234 82,922 93,796 92,777 97,588 1967-2011 Other States Alabama 19,831 17,222 17,232 19,059 17,271 1969-2011

309

TESTING OF GASEOUS FIRE SUPPRESSANTS IN NARROW ...  

Science Conference Proceedings (OSTI)

... This allowed to determine a range of conditions suitable for operating the ... A nichrome wire, powered by a low voltage transformer, acts as igniter. ...

2011-10-18T23:59:59.000Z

310

Gaseous Hydrogen Embrittlement of Pipeline Steels  

Science Conference Proceedings (OSTI)

Abstract Scope, The tensile properties of x52, x65, x80 and x100 pipeline steels have been measured in a high pressure (13.6 MPa), high purity, hydrogen gas...

311

Potential Hazards Relating to Pyrolysis of c-C{sub 4}F{sub 8}O, n-C{sub 4}F{sub 10}, and c-C{sub 4}F{sub 8} in Selected Gaseous Diffusion Plant Operations  

SciTech Connect

As part of a program intended to replace the present evaporative coolant at the gaseous diffusion plants (GDPs) with a non-ozone-depleting alternate, a series of investigations of the suitability of candidate substitutes is under way. This report summarizes studies directed at estimating the chemical and thermal stability of three candidate coolants, c-C{sub 4}F{sub 8}, n-C{sub 4}F{sub 10}, and c-C{sub 4}F{sub 8}O, in a few specific environments to be found in gaseous diffusion plant operations. One issue concerning the new coolants is the possibility that they might produce the highly toxic compound perfluoroisobutylene (PFIB) in high-temperature environments. Two specific high-temperature thermal environments are examined, namely the use of a flame test for the presence of coolant vapors and welding in the presence of coolant vapors. A second issue relates to the thermal or chemical decomposition of the coolants in the gaseous diffusion process environment. The primary purpose of the study was to develop and evaluate available data to provide information that will allow the technical and industrial hygiene staff at the GDPs to perform appropriate safety evaluations and to determine the need for field testing or experimental work. The scope of this study included a literature search and an evaluation of the information developed therefrom. Part of that evaluation consists of chemical kinetics modeling of coolant decomposition in the two operational environments. The general conclusions are that PFIB formation is unlikely in either situation but that it cannot be ruled out completely under extreme conditions. The presence of oxygen, moisture, and combustion products will tend to lead to the formation of CF{sub 4} and oxidation products (COF{sub 2}, CO, CO{sub 2}, and HF) rather than PFIB.

Trowbridge, L.D.

2000-03-29T23:59:59.000Z

312

PROOF OF CONCEPT TEST OF A UNIQUE GASEOUS PERFLUROCARBON TRACER SYSTEM FOR VERIFICATION AND LONG TERM MONITORING OF CAPS AND COVER SYSTEMS CONDUCTED AT THE SAVANNAH RIVER SITE BENTONITE MAT TEST FACILITY.  

Science Conference Proceedings (OSTI)

Engineered covers have been placed on top of buried/subsurface wastes to minimize water infiltration and therefore, release of hazardous contaminants. In order for the cover to protect the environment it must remain free of holes and breaches throughout its service life. Covers are subject to subsidence, erosion, animal intrusion, plant root infiltration, etc., all of which will affect the overall performance of the cover. The U.S. Department of Energy Environmental Management (DOE-EM) Program 2006 Accelerated Cleanup Plan is pushing for rapid closure of many of the DOE facilities. This will require a great number of new cover systems. Some of these new covers are expected to maintain their performance for periods of up to 1000 years. Long-term stewardship will require monitoring/verification of cover performance over the course of the designed lifetime. In addition, many existing covers are approaching the end of their design life and will need validation of current performance (if continued use is desired) or replacement (if degraded). The need for a reliable method of verification and long-term monitoring is readily apparent. Currently, failure is detected through monitoring wells downstream of the waste site. This is too late as the contaminants have already left the disposal area. The proposed approach is the use of gaseous Perfluorocarbon tracers (PFT) to verify and monitor cover performance. It is believed that PFTs will provide a technology that can verify a cover meets all performance objectives upon installation, be capable of predicting changes in cover performance and failure (defined as contaminants leaving the site) before it happens, and be cost-effective in supporting stewardship needs. The PFTs are injected beneath the cover and air samples taken above (either air samples or soil gas samples) at the top of the cover. The location, concentrations, and time of arrival of the tracer(s) provide a direct measure of cover performance. PFT technology can be used as a non-invasive method (if injection ports are emplaced prior to cover emplacement) on new covers or a minimally invasive method on existing covers. PFT verification will be useful at all buried waste sites using a cover system (e.g., treated or untreated chemical waste landfills) including DOE, commercial, and private sector sites. This paper discusses the initial field trial of the PFT cover monitoring system performed at the Savannah River Site (SRS) in FY01. The experiments provided a successful proof-of-principle test of the PFT technology in monitoring caps and covers. An injection and sampling array was installed in the Bentomat test cap at the SRS Caps Test Facility. This system contained 6 feet of sandy soil beneath a 1/2 inch geosynthetic clay liner covered by an HDPE liner which was covered by 2 feet of clayey top soil. PFTs were injected into the sandy soil though a pre-existing system of access pipes below the cap and soil gas samples were taken on top of the cap. Mid-way into the injection period a series of 1 1/2 inch holes were punched into the cap (through the geomembrane) to provide a positive breach in the cap. Data will be presented that shows the initial cap was fairly tight and leak free and that the artificially induced leaks were detectable within two hours of occurrence.

HEISER,J.; SULLIVAN,T.; SERRATO,M.

2002-02-24T23:59:59.000Z

313

adVancing frontiers in energy and  

E-Print Network (OSTI)

. Carbon emissions threaten environmental quality worldwide. Growing cities wonder where they'll acquire, nuclear energy, improvements to the electricity infrastruc- ture, and energy efficiency and renewable from today's energy economy to renewable, nuclear, and near-zero-emission hydrocar- bon energy systems

314

Electromagnetic at Scripps Institution of Oceanography  

E-Print Network (OSTI)

dipole, 100-1000 amps 25-100 m CSEM Transmitter Oil, Gas (resistive) Seawater (very conductive) Air-receiver offset, km In-lineelectricfield,V/m/(Am) oil, gas no oil, gas 1000 m, 0.3 m 1000 m, 1 m 100 m, 100 m E of offshore hydrocar- bon exploration. Consortium support since 1996 has funded several marine EM graduate

Constable, Steve

315

Novel Regenerated Solvent Extraction Processes for the Recovery of Carboxylic Acids or Ammonia from Aqueous Solutions Part II. Recovery of Ammonia from Sour Waters  

E-Print Network (OSTI)

Coal 10. Neavel, R.C. , "Exxon Donor Solvent Liquefactionphosphonic acid in a Varsol (Exxon) diluent stability, their12 King Industries and Exxon Company, U.S.A. straight-chain

Poole, L.J.

2008-01-01T23:59:59.000Z

316

Microwave gaseous electrode development. Final report. [Plasma torch  

DOE Green Energy (OSTI)

A microwave plasma torch was developed and tested at bench scale using power inputs of up to 400 W at 2.45 GHz. The bench scale tests included: characterization of the plasma torch operating characteristics as gas composition, gas flow rate, and power input were varied; measuring the effects of magnetic fields on the plasma torch operation; measuring the effects on the plasma torch operation of an aerodynamic flow field past the exit of the torch (cold flow tests); and measurements were made to characterize the plasma gas temperature and electron temperature. Following these tests, the microwave plasma torch was installed in the anode wall of the RMC diagonal conducting wall MHD generator. Hot flow tests were conducted in the channel using unseeded combustion products. These were followed by MHD power generation tests using subsonic and supersonic flows seeded with up to 1.5 w/o potassium and magnetic fields up to 3.8 Tesla. For one series of tests the magnetic field was reversed so that the surface containing the microwave plasma torch operated as a cathode. Following the MHD generator tests, another concept using a microwave slot radiator to produce plasma in the MHD boundary layer was tested at the bench scale. Measurements were made of the parameters necessary to sustain a discharge with the slot radiator open, similar to the microwave plasma torch, with argon flowing through the slots; and with the slots closed with a castable ceramic, the argon flowing past the outside of the slot. The latter tests were extended to a slot configuration appropriate for use in a slagging channel which incorporated water cooling passages in the surface which would be in contact with the MHD channel working fluid. Results are presented and discussed. (WHK)

Jones, M.S. Jr.; Sathyanarayana, K.; Mallavarpu, R.; Thiagarajan, V.

1980-12-31T23:59:59.000Z

317

Detector for flow abnormalities in gaseous diffusion plant compressors  

DOE Patents (OSTI)

A detector detects a flow abnormality in a plant compressor which outputs a motor current signal. The detector includes a demodulator/lowpass filter demodulating and filtering the motor current signal producing a demodulated signal, and first, second, third and fourth bandpass filters connected to the demodulator/lowpass filter, and filtering the demodulated signal in accordance with first, second, third and fourth bandpass frequencies generating first, second, third and fourth filtered signals having first, second, third and fourth amplitudes. The detector also includes first, second, third and fourth amplitude detectors connected to the first, second, third and fourth bandpass filters respectively, and detecting the first, second, third and fourth amplitudes, and first and second adders connected to the first and fourth amplitude detectors and the second and third amplitude detectors respectively, and adding the first and fourth amplitudes and the second and third amplitudes respectively generating first and second added signals. Finally, the detector includes a comparator, connected to the first and second adders, and comparing the first and second added signals and detecting the abnormal condition in the plant compressor when the second added signal exceeds the first added signal by a predetermined value.

Smith, Stephen F. (Loudon, TN); Castleberry, Kim N. (Harriman, TN)

1998-01-01T23:59:59.000Z

318

The Effect of Trace Oxygen on Gaseous Hydrogen-Accelerated ...  

Science Conference Proceedings (OSTI)

Mechanical Behavior in Human Cortical Bone Across Multiple Length Scales: ... Hydrogen-Accelerated Fatigue Crack Growth in a Low-Strength Pipeline Steel.

319

Chapter 4 The Gaseous State Chemistry of Gases  

E-Print Network (OSTI)

.15 V = V0[1+(t/273.15oC)] Kelvin T = 273.15 + t(Celsius) #12;Boyle's Law · The stirling engine, a heat

Ihee, Hyotcherl

320

Orientation Visit to the Portsmouth Gaseous Diffusion Plant  

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

UF 6 Sampling Building, X-345 Special Nuclear Material Storage Facility, X-744G Bulk Non-Uranium Enrichment Service Activity (UESA) Storage Building and Associated Outside...

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Bioelectrochemical Treatment of Gaseous By-products - Energy ...  

Electricity or hydrogen can be reused for hydrotreatment processes; Operates by renewable means; Applications and Industries. Treatment of sulfide-containing gas streams;

322

Hybrid atomistic-continuum formulations for gaseous flows  

E-Print Network (OSTI)

Hybrid atomistic-continuum formulations allow the simulation of complex hydrodynamic phenomena at the nano and micro scales without the prohibitive cost of a fully atomistic approach. This is achieved through a domain ...

Wijesinghe, Hettithanthrige Sanith, 1974-

2003-01-01T23:59:59.000Z

323

Continuous Fiber Ceramic Composite (CFCC) Program: Gaseous Nitridation  

SciTech Connect

Textron has developed a mature process for the fabrication of continuous fiber ceramic composite (CFCC) tubes for application in the aluminum processing and casting industry. The major milestones in this project are System Composition; Matrix Formulation; Preform Fabrication; Nitridation; Material Characterization; Component Evaluation

R. Suplinskas G. DiBona; W. Grant

2001-10-29T23:59:59.000Z

324

Electron attachment fo halocarbons of interest in gaseous dielectrics  

Science Conference Proceedings (OSTI)

Total electron attachment rate constants and cross sections for halomethane and haloethane (freon) compounds are summarized and new results are reported for haloethylenes. The relationship between the electron attachment cross section and the breakdown strength of dielectric gases reported earlier is further discussed.

McCorkle, D.L.; Christodoulides, A.A.; Christophorou, L.G.

1984-01-01T23:59:59.000Z

325

The Gaseous Electronics Conference RF Reference CellAn ...  

Science Conference Proceedings (OSTI)

... The GEC Cell has proven to be well suited for plasma research due to its combination of simplicity and flexi- bility for diagnostic application. ...

1998-02-13T23:59:59.000Z

326

U.S. Natural Gas Plant Liquids Production, Gaseous Equivalent...  

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

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1973 79,000 79,000 77,000 73,000 77,000 74,000 76,000 77,000 74,000 76,000 75,000 78,000 1974 79,000 72,000 78,000 73,000...

327

U.S. Natural Gas Plant Liquids Production, Gaseous Equivalent...  

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

Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1930's 75 62 52 48 52 55 61 70 73 74 1940's 80 115 119 122 143 160 165 189 210 224 1950's 260 292 319...

328

U.S. Natural Gas Plant Liquids Production, Gaseous Equivalent...  

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

Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1930's 75,140 62,288 51,816 48,280 52,190 55,488 61,064 70,210 73,338 73,746 1940's 79,526 115,464...

329

Synthesis of thin films and materials utilizing a gaseous catalyst  

Science Conference Proceedings (OSTI)

A method for the fabrication of nanostructured semiconducting, photoconductive, photovoltaic, optoelectronic and electrical battery thin films and materials at low temperature, with no molecular template and no organic contaminants. High-quality metal oxide semiconductor, photovoltaic and optoelectronic materials can be fabricated with nanometer-scale dimensions and high dopant densities through the use of low-temperature biologically inspired synthesis routes, without the use of any biological or biochemical templates.

Morse, Daniel E; Schwenzer, Birgit; Gomm, John R; Roth, Kristian M; Heiken, Brandon; Brutchey, Richard

2013-10-29T23:59:59.000Z

330

Orientation Visit to the Portsmouth Gaseous Diffusion Plant  

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

Service Activity (UESA) Storage Building and Associated Outside Storage, and the DUF6 Conversion Facility. The tours gave the site lead the opportunity to interact with...

331

Orientation Visit to the Paducah Gaseous Diffusion Plant  

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

and Low-Level Waste Storage Facility (HC-2), C- 410 D&D Project Complex (HC-2), and DUF6 Conversion Project (HC-3). The tours gave the site lead the opportunity to interact...

332

DOE - Office of Legacy Management -- Paducah Gaseous Diffusion...  

Office of Legacy Management (LM)

Plant Historical documents may contain links which are no longer valid or to outside sources. LM can not attest to the accuracy of information provided by these links. Please see...

333

C-7: Gaseous Nitriding Process Control: Application of Customized ...  

Science Conference Proceedings (OSTI)

... investigation and this proves the utility of using thermodynamic database to .... the Asymptotic Grain Face Distribution in Terms of Tological Event Rates.

334

Devices capable of removing silicon and aluminum from gaseous atmospheres  

DOE Patents (OSTI)

An electrochemical device is made of a containment vessel (30) optional ceramic material within the containment vessel and including one or more electrochemical cells (10), the cells containing a porous exposed electrode (11) in contact with a solid electrolyte, where at least one of the exposed electrode, the containment vessel, and the optional ceramic material contains a deposit selected from metal oxide and metal salt capable of forming a metal oxide upon heating, where the metal is selected from the group consisting of Ce, Sm, Mg, Be, Ca, Sr, Ti, Zr, Hf, Y, La, Pr, Nb, Pm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Th, U, and their mixtures.

Spengler, Charles J. (Murrysville, PA); Singh, Prabhakar (Murrysville, PA)

1989-01-01T23:59:59.000Z

335

Former Worker Medical Screening Program - Oak Ridge K-25 Gaseous...  

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

Jim Frederick Co-Principal Investigator: Steven Markowitz, MD Toll-free Telephone: (888) 241-1199 Local Outreach Office: Bruce Lawson 133 Raleigh Road Oak Ridge, TN 37830 Local...

336

Former Worker Medical Screening Program - Paducah Gaseous Diffusion...  

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

Jim Frederick Co-Principal Investigator: Steven Markowitz, MD Toll-free Telephone: (888) 241-1199 Local Outreach Office: James Harbison 2525 Cairo Road Paducah, KY 42001 Website:...

337

CFD Model Development for Gaseous Reduction of Iron Ore Fines ...  

Science Conference Proceedings (OSTI)

Chemical Enrichment of Precious Metals in Iron Sulfides Using Microwave Energy Chloridizing ... Co-Gasification Behavior of Metallurgical Coke with High and Low Reactivity .... Thermal Plasma Torches for Metallurgical Applications.

338

Gaseous Emissions From Steamboat Springs, Brady'S Hot Springs...  

Open Energy Info (EERE)

used to explore for geothermal systems, characterize their lateral extent, or map the trends of concealed geologic structures that may provide important reservoir permeability at...

339

Construction of a Self-Contained Liquid/Gaseous ...  

Science Conference Proceedings (OSTI)

... for Transmission Electron Microscopy An In ... inside the Transmission Electron Microscope (TEM). ... high-vacuum transmission electron microscopes. ...

340

Surface Treatment of Carbon Fibers by Continuous Gaseous System  

SciTech Connect

The mechanical performance of carbon fiber-polymer composites strongly depends on interfacial adhesion, which is function of types of carbon fiber, surface chemistry, physical and chemical interactions, and mechanical interlocking. Untreated and unsized high strength carbon fibers were oxidized by continuous thermochemical and atmospheric plasma treatment. Surface properties were investigated before and after treatment (chemistry, topography), as well as their mechanical properties. X-ray photoelectron spectroscopy revealed a significant increase of the oxygen atomic content from 3% to around 20% and the analysis of the carbon peak showed that carboxylic acid functionalities and hydroxyl groups were generated. An observation of the fiber surface by scanning electron microscopy and atomic force microscopy did not show any dramatic change of the fiber morphology and surface topography. A Raman spectroscopy analysis exhibited that the weak boundary layers and debris remaining at the surface of untreated fibers were removed. No significant damage of the mechanical properties (tensile strength) was noticed. The influence of the changes of the surface properties on interfacial adhesion of carbon fiber-epoxy and -vinyl ester matrix was evaluated using 90 flexural and short beam shear tests with unidirectional coupons. A significant increase of the 90 flexural and short beam shear strength showed that the interfacial adhesion between carbon fibers and epoxy resins was improved. The observation of the fracture profile by scanning electron microcopy confirmed those results, as the rupture of the coupons after surface treatment was more cohesive.

Vautard, Frederic [ORNL; Paulauskas, Felix L [ORNL; Naskar, Amit K [ORNL; Warren, Charles David [ORNL; Meyer III, Harry M [ORNL; Ozcan, Soydan [ORNL

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Detector for flow abnormalities in gaseous diffusion plant compressors  

DOE Patents (OSTI)

A detector detects a flow abnormality in a plant compressor which outputs a motor current signal. The detector includes a demodulator/lowpass filter demodulating and filtering the motor current signal producing a demodulated signal, and first, second, third and fourth bandpass filters connected to the demodulator/lowpass filter, and filtering the demodulated signal in accordance with first, second, third and fourth bandpass frequencies generating first, second, third and fourth filtered signals having first, second, third and fourth amplitudes. The detector also includes first, second, third and fourth amplitude detectors connected to the first, second, third and fourth bandpass filters respectively, and detecting the first, second, third and fourth amplitudes, and first and second adders connected to the first and fourth amplitude detectors and the second and third amplitude detectors respectively, and adding the first and fourth amplitudes and the second and third amplitudes respectively generating first and second added signals. Finally, the detector includes a comparator, connected to the first and second adders, and comparing the first and second added signals and detecting the abnormal condition in the plant compressor when the second added signal exceeds the first added signal by a predetermined value. 6 figs.

Smith, S.F.; Castleberry, K.N.

1998-06-16T23:59:59.000Z

342

Aqueous and gaseous nitrogen losses induced by fertilizer application  

Science Conference Proceedings (OSTI)

In recent years concern has grown over the contribution of nitrogen (N) fertilizer use to nitrate (NO{sub 3}{sup -}) water pollution and nitrous oxide (N{sub 2}O), nitric oxide (NO), and ammonia (NH{sub 3}) atmospheric pollution. Characterizing soil N effluxes is essential in developing a strategy to mitigate N leaching and emissions to the atmosphere. In this paper, a previously described and tested mechanistic N cycle model (TOUGHREACT-N) was successfully tested against additional observations of soil pH and N{sub 2}O emissions after fertilization and irrigation, and before plant emergence. We used TOUGHREACT-N to explain the significantly different N gas emissions and nitrate leaching rates resulting from the different N fertilizer types, application methods, and soil properties. The N{sub 2}O emissions from NH{sub 4}{sup +}-N fertilizer were higher than from urea and NO{sub 3}{sup -}-N fertilizers in coarse-textured soils. This difference increased with decreases in fertilization application rate and increases in soil buffering capacity. In contrast to methods used to estimate global terrestrial gas emissions, we found strongly non-linear N{sub 2}O emissions as a function of fertilizer application rate and soil calcite content. Speciation of predicted gas N flux into N{sub 2}O and N{sub 2} depended on pH, fertilizer form, and soil properties. Our results highlighted the need to derive emission and leaching factors that account for fertilizer type, application method, and soil properties.

Gu, C.; Maggi, F.; Riley, W.J.; Hornberger, G.M.; Xu, T.; Oldenburg, C.M.; Spycher, N.; Miller, N.L.; Venterea, R.T.; Steefel, C.

2009-01-15T23:59:59.000Z

343

Aqueous and gaseous nitrogen losses induced by fertilizer application  

E-Print Network (OSTI)

and E. R. Hunt. (2005). Biome-BGC: Terrestrial EcosystemLeonard et al, 1987], BIOME-BGC [Running and Gower, 1994;

Gu, C.

2009-01-01T23:59:59.000Z

344

Review of the Portsmouth Gaseous Diffusion Plant Integrated Safety...  

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

Criteria, Review and Approach Document DNFSB Defense Nuclear Facilities Safety Board DOE U.S. Department of Energy ESH&Q Environment, Safety, Health, and Quality FBP...

345

Effects of Gaseous Hydrogen Exposure and Temperature on ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, Materials Science & Technology 2011. Symposium, Environmentally Assisted Cracking of Materials. Presentation Title, Effects of...

346

Tensile and Fatigue Testing of 304 Stainless Steel after Gaseous ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Samples of 304 stainless steel were subjected to a range of hydrogen exposure conditions including 1 week at 1 atm, and up to 3 weeks at...

347

FEDERAL FACILITY AGREEMENT FOR THE PADUCAH GASEOUS DIFFUSION...  

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

Conservation and Recovery Act, 42 U.S.C. 6901, et seq., as amended. 98-616. II. RCRA closure and post-closure care shall mean closure and post-closure care of hazardous...

348

Catalytic Cracking of Gaseous Heavy Hydrocarbons by Ceramic Filters  

DOE Green Energy (OSTI)

The use of syngas from waste or biomass gasification to generate electricity is a way which is attracting increasing attention especially with regard to the demands of regenerable energy consumption and to the reduction of waste disposal. In order to feed the syngas to a gas motor or a gas turbine the gas has to be cleaned. In future also the coupling of biomass gasification with a fuel cell will be applied, which needs a very efficient gas cleaning. The decomposition of tars and the removal of particles from the gas are the key issues of gas cleaning. Up to now these two steps are performed in two separate units. Normally, the tars are decomposed in catalytic beds or honeycomb structures. The catalytic decomposition is achieved at temperatures between 750 C and 900 C depending on the catalyst used. Particles are removed by filtration of the hot gas. Filtration at high temperatures and with high efficiencies is possible when using ceramic filter elements. Ceramic hot gas filters are well established in advanced coal gasification, such as the integrated gasification combined cycle process, as well as in waste and biomass gasification and pyrolysis processes. Since the catalytic reaction requires high temperatures the gas has to be reheated after the particles are removed in the filter or the hot unfiltered gas has to flow through the catalytic unit. If the gas is filtered first, reheating of the gas stream is an additional cost factor. Furthermore, pipes downstream of the filter can be plugged, if the temperature of the gas falls below the condensation temperature of the heavy hydrocarbons. Using the second way of hot unfiltered gas flows through the catalytic unit, there is the problem of deactivation of the catalyst by deposition of dust at higher dust concentrations. At worst the catalytic unit can be plugged by dust deposition.

Heidenreich, S.; Nacken, M.; Walch, A.; Chudzinski, S.

2002-09-19T23:59:59.000Z

349

MEASURING GASEOUS EMISSIONS FROM STORED PIG SLURRY S. Espagnol1  

E-Print Network (OSTI)

11, with higher fossil fuel prices, coal IGCC with CCS and biogas CHP are the preferred technologies

Paris-Sud XI, Université de

350

U.S. Supplemental Gaseous Fuels (Billion Cubic Feet)  

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

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1973 NA NA NA NA NA NA NA NA NA NA NA NA 1974 NA NA NA NA NA NA NA NA NA NA NA NA 1975 NA NA NA NA NA NA NA NA NA NA NA NA 1976 NA NA NA NA NA NA NA NA NA NA NA NA 1977 NA NA NA NA NA NA NA NA NA NA NA NA 1978 NA NA NA NA NA NA NA NA NA NA NA NA 1979 NA NA NA NA NA NA NA NA NA NA NA NA 1980 17 16 16 12 11 10 10 10 10 12 14 16 1981 20 17 17 14 13 12 12 12 12 14 15 19 1982 19 16 15 12 9 9 9 9 9 11 13 14 1983 16 12 12 10 8 8 8 10 10 10 13 16 1984 13 10 10 8 7 7 7 8 8 8 11 13 1985 13 9 8 11 11 10 12 12 9 12 9 13 1986 12 11 11 8 8 8 8 8 8 9 10 15

351

Embrittlement of Pipeline Steels by Gaseous and Cathodic Hydrogen  

Science Conference Proceedings (OSTI)

Abstract Scope, The commercialization of hydrogen fuel-based technologies will require ... This paper reports on the results of this work to date comparing the effects of ... Return on Investment of Structural Health Monitoring Systems for Wind...

352

Carbon K-shell excitation of gaseous and condensed cyclic hydrocarbons: C/sub 3/H/sub 6/, C/sub 4/H/sub 8/, C/sub 5/H/sub 8/, C/sub 5/H/sub 10/, C/sub 6/H/sub 10/, C/sub 6/H/sub 12/, and C/sub 8/H/sub 8/  

SciTech Connect

The carbon K-shell excitation spectra of gaseous cyclic hydrocarbons, both saturated (cyclopropane, cyclobutane, cyclopentane, cyclohexane) and unsaturated (cyclopentene, cyclohexene, and cyclooctatetraene), have been recorded by electron energy loss spectroscopy under dipole-dominated conditions. These are compared to the NEXAFS spectra of multilayers and monolayers of C/sub 4/H/sub 8/, C/sub 5/H/sub 8/, C/sub 6/H/sub 12/, and C/sub 8/H/sub 8/ on Pt(111). Multiple scattering X..cap alpha.. calculations of the spectra of cyclopropane, cyclobutane, and cyclohexane are also reported. In most cases the gas and solid spectra are essentially the same indicating that intramolecular transitions dominate in the condensed phase. The NEXAFS polarization dependence of the condensed phases has assisted spectral assignments and the determination of the molecular orientation in the monolayer phase. In the saturated species a sharp feature about 3 eV below the carbon 1s ionization threshold is identified as a transition to a state of mixed Rydberg/valence character with the ..pi..*(CH/sub 2/) valence component dominating. Except for cyclopropane the positions of the main sigma * resonances correlate with the C-C bond lengths in a manner similar to that reported previously for noncyclic aliphatic molecules. In the spectra of monolayer C/sub 6/H/sub 12/, C/sub 5/H/sub 8/, and C/sub 8/H/sub 8/ spectral broadening and weak additional features are observed which are attributed to molecule-surface interactions.

Hitchcock, A.P.; Newbury, D.C.; Ishii, I.; Stoehr, J.; Horsley, J.A.; Redwing, R.D.; Johnson, A.L.; Sette, F.

1986-11-01T23:59:59.000Z

353

Method for measuring Particulate and Gaseous Metals in a fluid stream, Device for measuring Particulate and Gaseous Metals in a fluid stream  

DOE Patents (OSTI)

A method for analyzing metal in a fluid is provided comprising maintaining a first portion of a continuous filter media substrate at a temperature coinciding with the phase in which the metal is to be analyzed; contacting the fluid to a first portion of said substrate to retain the metal on the first portion of said substrate; preventing further contact of the fluid to the first portion of substrate; and contacting the fluid to a second portion of said substrate to retain metal on the second portion of the said substrate while simultaneously analyzing the first portion for metal. Also provided is a device for the simultaneous monitoring and analysis of metal in a fluid comprising a continuous filter media substrate; means for maintaining a first portion of said filter media substrate at a temperature coinciding with the phase in which the metal is to be analyzed; a means for contacting the fluid to the first portion of said substrate; a means for preventing further contact of the fluid to the first portion of substrate; a means for contacting the fluid to a second portion of said substrate to retain metal on the second portion of the said substrate; and means for analyzing the first portion for metal.

Farber, Paul S.; Huang, Hann-Shen

1998-10-21T23:59:59.000Z

354

RADIOLYSIS OF ORGANIC COMPOUNDS IN THE ADSORBED STATE  

DOE Patents (OSTI)

>A method of forming branch chained hydrocarbons by means of energetic penetrating radiation is described. A solid zeolite substrate is admixed with a cobalt ion and is irradiated with a hydrocarbon adsorbed therein. Upon irradiation with gamma rays, there is an increased yield of branched and lower molecular straight chain compounds. (AEC)

Sutherland, J.W.; Allen, A.O.

1961-10-01T23:59:59.000Z

355

Presentation 2.4: Forest biorefining and implications for future wood energy scenarios Jack N. Saddler  

E-Print Network (OSTI)

of the synthetic fuels examined in the journal paper, namely Fischer-Tropsch fuels (diesel and gasoline blendstocks processes included in our analysis. 2 Synthetic Fuels Included in the Analysis 2.1 Fischer-Tropsch Fuels The product of Fischer-Tropsch (FT) synthesis is a mixture of straight-chain hydrocarbons (olefins

356

Applied reaction dynamics: Efficient synthesis gas production via single collision partial oxidation of methane to CO on Rh,,111...  

E-Print Network (OSTI)

of the synthetic fuels examined in the journal paper, namely Fischer-Tropsch fuels (diesel and gasoline blendstocks processes included in our analysis. 2 Synthetic Fuels Included in the Analysis 2.1 Fischer-Tropsch Fuels The product of Fischer-Tropsch (FT) synthesis is a mixture of straight-chain hydrocarbons (olefins

Sibener, Steven

357

Characterization of the gaseous companion {\\kappa} Andromedae b: New Keck and LBTI high-contrast observations  

E-Print Network (OSTI)

We previously reported the direct detection of a low mass companion at a projected separation of 55+-2 AU around the B9 type star {\\kappa} Andromedae. The properties of the system (mass ratio, separation) make it a benchmark for the understanding of the formation and evolution of gas giant planets and brown dwarfs on wide-orbits. We present new angular differential imaging (ADI) images of the Kappa Andromedae system at 2.146 (Ks), 3.776 (L'), 4.052 (NB 4.05) and 4.78 {\\mu}m (M') obtained with Keck/NIRC2 and LBTI/LMIRCam, as well as more accurate near-infrared photometry of the star with the MIMIR instrument. We derive a more accurate J = 15.86 +- 0.21, H = 14.95 +- 0.13, Ks = 14.32 +- 0.09 mag for {\\kappa} And b. We redetect the companion in all our high contrast observations. We confirm previous contrasts obtained at Ks and L' band. We derive NB 4.05 = 13.0 +- 0.2 and M' = 13.3 +- 0.3 mag and estimate Log10(L/Lsun) = -3.76 +- 0.06. We build the 1-5 microns spectral energy distribution of the companion and co...

Bonnefoy, M; Marleau, G -D; Schlieder, J E; Wisniewski, J; Carson, J; Covey, K R; Henning, T; Biller, B; Hinz, P; Klahr, H; Boyer, A N Marsh; Zimmerman, N; Janson, M; McElwain, M; Mordasini, C; Skemer, A; Bailey, V; Defrre, D; Thalmann, C; Skrutskie, M; Allard, F; Homeier, D; Tamura, M; Feldt, M; Cumming, A; Grady, C; Brandner, W; Kandori, R; Kuzuhara, M; Fukagawa, M; Kwon, J; Kudo, T; Hashimoto, J; Kusakabe, N; Abe, L; Brandt, T; Egner, S; Guyon, O; Hayano, Y; Hayashi, M; Hayashi, S; Hodapp, K; Ishii, M; Iye, M; Knapp, G; Matsuo, T; Mede, K; Miyama, M; Morino, J -I; Moro-Martin, A; Nishimura, T; Pyo, T; Serabyn, E; Suenaga, T; Suto, H; Suzuki, R; Takahashi,; Takami, M; Takato, N; Terada, H; Tomono, D; Turner, E; Watanabe, M; Yamada, T; Takami, H; Usuda, T

2013-01-01T23:59:59.000Z

358

Implications of the formation of cloud condensation nuclei from gaseous precursors  

SciTech Connect

The question of the derivation of the characteristic shape of the cloud condensation nucleus (CCN) spectrum from commonly used aerosol size distributions is examined. The shape of the CCN spectrum is important since it determines if the cloud droplets are controlled by the number of CCN or cloud dynamics. It is found that both a Junge and a Whitby size distribution of soluble particles over-predict the exponent of the CCN spectrum, and the situation is made worse by considering the fraction of soluble material to be particle size dependent. Approximate agreement is obtained from a model that assumes the number of CCN to be proportional to the surface area of the ambient aerosol as might be the case if the particle surface catalysts a chemical reaction to form the soluble material.

Williams, A.

1990-01-01T23:59:59.000Z

359

Method and apparatus for treating gaseous effluents from waste treatment systems  

SciTech Connect

Effluents from a waste treatment operation are incinerated and oxidized by passing the gases through an inductively coupled plasmas arc torch. The effluents are transformed into plasma within the torch. At extremely high plasma temperatures, the effluents quickly oxidize. The process results in high temperature oxidation of the gases without addition of any mass flow for introduction of energy.

Flannery, Philip A. (Ramsey, MT); Kujawa, Stephan T. (Butte, MT)

2000-01-01T23:59:59.000Z

360

Backward-Time Lagrangian Stochastic Dispersion Models and Their Application to Estimate Gaseous Emissions  

Science Conference Proceedings (OSTI)

Backward Lagrangian stochastic models calculate an ensemble of fluid element (particle) trajectories that are distinguished by each passing through an observation point. As shown, they can be faster and more flexible in calculating short-range ...

Thomas K. Flesch; John D. Wilson; Eugene Yee

1995-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Portsmouth Gaseous Diffusion Plant Director's Final Findings and Orders, March 18, 1999 Summary  

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

Integrated Units) Integrated Units) State Ohio Agreement Type Federal Facility Agreement Legal Driver(s) Ohio EPA Scope Summary Integrating the PORTS on-site closure work required by various sources in order to avoid duplication of effort, and efficiently perform sitewide ground water monitoring and surveillance and maintenance activities Parties DOE; Bechtel Jacobs Company LLC; State of Ohio Environmental Protection Agency Date 3/18/1999 SCOPE * Integrate the on-site closure work required for specific units to avoid duplication of effort, and efficiently perform sitewide ground water monitoring and surveillance and maintenance activities at PORTS. * Recognize that a substantial portion of the tasks required under existing approved closure plans have been completed and incorporate the remaining tasks into the

362

Portsmouth Gaseous Diffusion Plant Director's Final Findings and Orders, February 24, 1998 Summary  

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

DUF DUF 6 and LiOH) State Ohio Agreement Type Director's Final Findings and Orders Legal Driver(s) RCRA Scope Summary Establish Compliance Orders and schedules regarding the LiOH Storage Plan/LiOH removal, and the DUF 6 Management Plan. Parties DOE; Ohio Environmental Protection Agency; Lockheed Martin Energy Systems, Inc. Date 2/24/1998 SCOPE * Establish Compliance Orders and schedules regarding the LiOH Storage Plan/LiOH removal, and the DUF 6 Management Plan. * Exempt Respondents from 1) the requirement to evaluate the LiOH, according to OAC rule 3745-52-11, and 2) evaluate the DUF 6 that is both generated and stored at the facility, according to OAC rule 3745-52-11. ESTABLISHING MILESTONES * DOE shall submit to Ohio EPA on or before 31 December of each year until DOE's

363

Liquid and Gaseous Waste Operations Project Annual Operating Report CY 1999  

SciTech Connect

A total of 5.77 x 10 7 gallons (gal) of liquid waste was decontaminated by the Process Waste Treatment Complex (PWTC) - Building 3544 ion exchange system during calendar year (CY) 1999. This averaged to 110 gpm throughout the year. An additional 3.94 x 10 6 gal of liquid waste (average of 8 gpm throughout the year) was decontaminated using the zeolite treatment system due to periods of high Cesium levels in the influent wastewater. A total of 6.17 x 10 7 gal of liquid waste (average of 118 gpm throughout the year) was decontaminated at Building 3544 during the year. During the year, the regeneration of the ion exchange resins resulted in the generation of 8.00 x 10 3 gal of Liquid Low-Level Waste (LLLW) concentrate and 9.00 x 10 2 gal of LLLW supernate. See Table 1 for a monthly summary of activities at Building 3544. Figure 1 shows a diagram of the Process Waste Collection and Transfer System and Figure 2 shows a diagram of the Building 3544 treatment process. Figures 3, 4 5, and 6 s how a comparison of operations at Building 3544 in 1997 with previous years. Figure 7 shows a comparison of annual rainfall at Oak Ridge National Laboratory (ORNL) since 1995.

Maddox, J.J.; Scott, C.B.

2000-03-01T23:59:59.000Z

364

Pressure Relief Devices for High-Pressure Gaseous Storage Systems: Applicability to Hydrogen Technology  

DOE Green Energy (OSTI)

Pressure relief devices (PRDs) are viewed as essential safety measures for high-pressure gas storage and distribution systems. These devices are used to prevent the over-pressurization of gas storage vessels and distribution equipment, except in the application of certain toxic gases. PRDs play a critical role in the implementation of most high-pressure gas storage systems and anyone working with these devices should understand their function so they can be designed, installed, and maintained properly to prevent any potentially dangerous or fatal incidents. As such, the intention of this report is to introduce the reader to the function of the common types of PRDs currently used in industry. Since high-pressure hydrogen gas storage systems are being developed to support the growing hydrogen energy infrastructure, several recent failure incidents, specifically involving hydrogen, will be examined to demonstrate the results and possible mechanisms of a device failure. The applicable codes and standards, developed to minimize the risk of failure for PRDs, will also be reviewed. Finally, because PRDs are a critical component for the development of a successful hydrogen energy infrastructure, important considerations for pressure relief devices applied in a hydrogen gas environment will be explored.

Kostival, A.; Rivkin, C.; Buttner, W.; Burgess, R.

2013-11-01T23:59:59.000Z

365

ESTIMATING HISTORICAL TRICHLOROETHYLENE EXPOSURE IN A URANIUM ENRICHMENT, GASEOUS DIFFUSION PLANT.  

E-Print Network (OSTI)

??Previous studies at two uranium enrichment plants have looked at radiation exposures, but not an extensive list of chemical exposures, limiting evaluation of potential interactions. (more)

MOSER, ADRIANE

2005-01-01T23:59:59.000Z

366

Method and apparatus for fast laser pulse detection using gaseous plasmas  

SciTech Connect

The method and device of the instant invention is a detector of pulsed laser radiation which utilizes the electromotive force generated by the plasma formed when such radiation is focused onto a surface (1). Measurements are made with a 10.6 .mu.m CO.sub.2 laser capable of producing peak intensities of 10.sup.13 W/cm.sup.2 when directed through a converging lens (2). Evacuated detector response to such laser intensity is 1 kV signal peak amplitude and subnanosecond risetimes into a 50.OMEGA. load (3). Detector performance is found to be greatly altered with the introduction of a background gas (4). For example, with one atmosphere of air, the detector produces prompt signals of the order of 1 V with subnanosecond response for pulse trains lasting 100 ns. With argon, krypton, or zenon at pressures of the order of 10 torr, the detector generates "trigger pulses" of about 250 V amplitude and 0.2 ns risetimes. Such detectors are quite robust when irradiated with high intensity laser radiation and are useful for qualitative laser beam monitoring.

McLellan, Edward J. (Los Alamos, NM); Webb, John A. (Albuquerque, NM)

1984-01-01T23:59:59.000Z

367

Liquid and Gaseous Waste Operations Department annual operating report, CY 1992  

SciTech Connect

A total of 6.05 x 10{sup 7} gal of liquid waste was decontaminated by the Process Waste Treatment Plant (PWTP) ion exchange system during CY 1992. This averaged to 115 gpm throughout the year. When necessary, a wastewater sidestream of 50--80 gpm was treated through the use of a natural zeolite treatment system. An additional 8.00 x 10{sup 6} gal (average of 15 gpm throughout the year) were treated by the zeolite system. Therefore, the average total flow treated at the PWTP for CY 1992 was 130 gpm. In mid-June, the zeolite system was repiped to allow it the capability to treat the ion exchange system`s discharge due to rising Cs problems in the wastewater. While being used to treat the ion exchange system`s discharge, it cannot treat a sidestream of wastewater. During the year, the regeneration of the cation exchange resins resulted in the generation of 7.83 x 10{sup 3} gal of liquid low-level waste (LLLW) concentrate and 1.15 x 10{sup 4} gal of LLLW evaporator feed. The head-end softening process (precipitation/clarification) generated 604 drums (4.40 x 10{sup 3} ft{sup 3}) of solid low-level waste sludge. The zeolite treatment system generated approximately 8.40 x 10{sup 2} ft{sup 3} of spent zeolite resin, which was turned over to the Solid Waste Operations Department for disposal. See Table 1 for a monthly summary of activities at the PWTP. Figures 1, 2, 3, and 4 show a comparison of operations at the PWTP in 1992 with previous years. Figure 5 shows a comparison of annual rainfall at Oak Ridge National Laboratory (ORNL) since 1987. A total of 1.55 x 10{sup 8} gal of liquid waste (average of 294 gpm throughout the year) was treated at the Nonradiological Wastewater Treatment Plant (NRWTP). Of this amount, 1.40 x 10{sup 7} gal were treated by the precipitation/clarification process for removal of heavy metals. Twenty-five boxes (1.60 x 10{sup 3} ft{sup 3}) of solid sludge generated by the precipitation/clarification process were removed from the filter press room.

Gillespie, M.A.; Maddox, J.J.; Scott, C.B.

1993-03-01T23:59:59.000Z

368

A toolkit for groundwater mean residence time interpretation with gaseous tracers  

Science Conference Proceedings (OSTI)

An analytical Excel-based toolkit called Gas-Tracer-Interpretation (GTI) was developed for determining mean residence time (MRT) of groundwater samples and for validating conceptual model assumptions. This novel data interpretation toolkit improves data ... Keywords: Environmental tracer, Environmental tracers concentrations in water, Groundwater dating, Lumped-parameter modeling, Water age

Pablo Fernando Dvila, Christoph Klls, Markus Weiler

2013-12-01T23:59:59.000Z

369

Application of gaseous disinfectants ozone and chlorine dioxide for inactivation of Bacillus subtilis spores  

E-Print Network (OSTI)

An assessment of ozone and chlorine dioxide for treatment ofAston, R. ; Synan, J. , Chlorine dioxide as a bactericide62, 80. 14. Keane, T. , Chlorine dioxide why all the

Aydogan, Ahmet

2006-01-01T23:59:59.000Z

370

Final environmental impact assessment of the Paducah Gaseous Diffusion Plant site, Paducah, Kentucky  

SciTech Connect

This document considers: the need for uranium enrichment facilities; site location; plant description; and describes the power generating facilities in light of its existing environment. The impacts from continuing operations are compared with alternatives of shutdown, relocation, and alternative power systems. (PSB)

Not Available

1982-08-01T23:59:59.000Z

371

Laser utilizing a gaseous lasing medium and method for operating the same  

DOE Patents (OSTI)

The invention relates to an improvement in gas lasers and a method of operating the same. In one aspect, the invention is an improved method for operating a high-power gas laser. The improvement comprises introducing the gas lasing medium tangentially to the laser tube at a pressure establishing a forced vortex in the tube. The vortex defines an axially extending core region characterized by a low pressure and temperature relative to the gas inlet and the exterior of the vortex. An electrical discharge is established in the core region to initiate lasing of the gas. The gas discharge from the tube is passed through a diffuser. As in conventional gas lasers, firing results in a very abrupt increase in gas temperature and in severe disruption of the gas. However, the gas vortex almost immediately restores the gas to its pre-firing condition. That is, almost all of the waste heat is transferred radially to the laser wall, and the original gas-flow pattern is restored. As a result, the power output of the laser is increased significantly, and the laser firing repetition rate is markedly increased.

Zerr, Bruce A. (Harriman, TN)

1986-01-01T23:59:59.000Z

372

Laser utilizing a gaseous lasing medium and method for operating the same  

DOE Patents (OSTI)

The invention relates to an improvement in gas lasers and a method of operating the same. In one aspect, the invention is an improved method for operating a high-power gas laser. The improvement comprises introducing the gas lasing medium tangentially to the laser tube at a pressure establishing a forced vortex in the tube. The vortex defines an axially extending core region characterized by a low pressure and temperature relative to the gas inlet and the exterior of the vortex. An electrical discharge is established in the core region to initiate lasing of the gas. The gas discharge from the tube is passed through a diffuser. As in conventional gas lasers, firing results in a very abrupt increase in gas temperature and in severe disruption of the gas. However, the gas vortex, almost immediately restores the gas to its prefiring condition. That is, almost all of the waste heat is transferred radially to the laser wall, and the original gas-flow pattern is restored. As a result, the power output of the laser is increased significantly, and the laser firing repetition rate is markedly increased.

Zerr, B.A.

1983-10-18T23:59:59.000Z

373

Ab initio modeling of complex aqueous and gaseous systems containing nitrogen  

E-Print Network (OSTI)

Nitrogen chemistry is ubiquitous in everyday life, from biological processes at ambient conditions to atmospheric chemistry at low pressures and temperatures to high-temperature combustion. Understanding the chemical ...

Ashcraft, Robert Wilson

2008-01-01T23:59:59.000Z

374

Report on the Biological Monitoring Program at Paducah Gaseous Diffusion Plant, January--December 1995  

Science Conference Proceedings (OSTI)

The BMP for PGDP consists of three major tasks: (1) effluent and ambient toxicity monitoring, (2) bioaccumulation studies, and (3) ecological surveys of stream communities (benthic macroinvertebrates, fish). This report focuses on ESD activities occurring from Jan. 1995 to Dec. 1995, although activities conducted outside this period are included as appropriate.

Kszos, L.A. [ed.

1996-04-01T23:59:59.000Z

375

Prevention of Porosity Formation and Other Effects of Gaseous Elements in Iron Castings  

SciTech Connect

Iron foundries have observed porosity primarily as interdendritic porosity in large freezing range alloys such as Ni-Hard I and hypoeutectic high Cr alloys or pinholes and fissure defects in gray and ductile irons. For most iron foundries, porosity problems occur sporadically, but even occasional outbreaks can be costly since even a very small amount of porosity can significantly reduce the mechanical properties of the castings. As a result when porosity is detected, the castings are scrapped and remelted, or when the porosity is undetected, defective parts are shipped to the consumer. Neither case is desirable. This project was designed to examine various factors contributing to the porosity formation in iron castings. Factors such as solubility of gases in liquid and solid iron alloys, surface tension of liquid iron alloys, and permeability of dendritic structures were investigated in terms of their effect on the porosity formation. A method was developed to predict how much nitrogen the molten alloy picks up from air after a given amount of holding time for a given melting practice. It was shown that small batches of iron melts in an induction furnace can end up with very high concentration of nitrogen (near solubility limit). Surface tension of liquid iron alloys was measured as a function of temperature. Effect of minor additions of S, Ti, and Al on the surface tension of liquid iron alloys was investigated. Up to 18% change in surface tension was detected by minor element additions. This translates to the same amount of change in gas pressure required in a bubble of a given size to keep the bubble stable. A new method was developed to measure the permeability of dendritic structures in situ. The innovative aspect of these experiments, with respect to previous interdendritic permeability measurements, was the fact that the dendritic structure was allowed to form in situ and was not cooled and re-heated for permeability tests. A permeability model was developed and tested using the results of the permeability experiments. The permeability model for flow parallel to the columnar dendrites predicted the experimental permeability results closely when the liquid volume fraction data from equilibrium calculations were used. The permeability gradient model was constructed in order to test the impact of interdendritic channel constriction on the flow of liquid through the mushy zone of a casting. The model examines two different regimes: (i) Dendritic solidification regime where the permeability is dominated by changes in liquid volume fraction and dendrite arm spacing, and (ii) Eutectic solidification regime where the permeability is dominated by changes in viscosity of eutectic mixture. It is assumed that the eutectic mixture behaves like a slurry whose viscosity increases with increasing solid fraction. It is envisioned that this model can be developed into a tool that can be very useful for metal casters.

Albany Research Center

2005-04-01T23:59:59.000Z

376

The Gaseous ISM: Observations with the Wisconsin H-alpha Mapper (WHAM)  

E-Print Network (OSTI)

The Wisconsin H-Alpha Mapper (WHAM) is a new facility dedicated to the study of faint optical emission lines from diffuse interstellar gas. During its first 18 months of operation, WHAM carried out a survey of the interstellar H-alpha emission associated with the warm, ionized component of the interstellar medium. The observations consisted of 37,000 spectra obtained with a one degree diameter beam on a 0.98 X 0.85 degree grid (lxb), covering the sky above declination -30 degrees. This survey provides for the first time a detailed picture of the distribution and kinematics of the diffuse ionized hydrogen through the H-alpha line comparable to surveys of the neutral hydrogen obtained through the 21 cm line. Preliminary reduction of the data from selected portions of the sky reveal that the interstellar H II has a complex distribution, with long filaments and loop-like structures extending to high Galactic latitudes and superposed on a more diffuse background. Apart from the H-alpha sky survey, WHAM has also detected for the first time faint diagnostic emission lines in selected directions, [O I] 6300, [O III] 5007, and He I 5876, which provide information about the physical state of the gas and clues about the source of the ionization. Maps of [S II] 6716 and [N II] 6584 over limited regions of the sky are providing information about variations in the temperature and ionization conditions within the Galactic disk, and the detection of faint optical emission lines from high velocity clouds is probing conditions in the halo.

R. J. Reynolds; L. M. Haffner; S. L. Tufte

1998-11-19T23:59:59.000Z

377

The Gaseous ISM Observations with the Wisconsin $H-\\alpha$ Mapper (WHAM)  

E-Print Network (OSTI)

The Wisconsin H-Alpha Mapper (WHAM) is a new facility dedicated to the study of faint optical emission lines from diffuse interstellar gas. During its first 18 months of operation, WHAM carried out a survey of the interstellar H-alpha emission associated with the warm, ionized component of the interstellar medium. The observations consisted of 37,000 spectra obtained with a one degree diameter beam on a 0.98 X 0.85 degree grid (lxb), covering the sky above declination -30 degrees. This survey provides for the first time a detailed picture of the distribution and kinematics of the diffuse ionized hydrogen through the H-alpha line comparable to surveys of the neutral hydrogen obtained through the 21 cm line. Preliminary reduction of the data from selected portions of the sky reveal that the interstellar H II has a complex distribution, with long filaments and loop-like structures extending to high Galactic latitudes and superposed on a more diffuse background. Apart from the H-alpha sky survey, WHAM has also de...

Reynolds, R J; Tufte, S L

1998-01-01T23:59:59.000Z

378

Origin of gaseous hydrocarbons from Upper Cretaceous and Tertiary strata in the Piceance basin, western Colorado  

E-Print Network (OSTI)

Natural gas samples were collected for geochemical analyses from Upper Cretaceous and Tertiary strata of the Piceance basin in western Colorado to: 1) determine the origin of gases (i.e., microbial versus thermogenic), 2) determine the thermogenic source rock(s) for the gas-rich Williams Fork Formation, and 3) assess the nature of gas migration. Mud logging gases were sampled approximately every 60 m between 350 and 2800 m and analyzed for "C compositions and CI/C,-3 ratios. Samples collected from low gas content intervals above 1950 m define two parallel trends of increasing "Cc, content with depth. Data from the first trend are based on eighteen analyses and range from-69.9 to-38.3%o (R 2 = 0.92). These data suggest a microbial and mixed microbial/thermogenic origin for methane. Only one sample from above 1950 m contained sufficient amounts of C2for isotopic analysis (813 CC2 =-27.0%o at 1718 m). Data from the second trend are based on seven analyses and are offset by approximately +20%o compared with the primary trend at comparable depths. These data range from-65.0 to-38.5%0 (R' = 0.84). 813c ci and C,/CI-3data from both trends are similar when viewed on a crossplot, thus suggesting that large-scale, vertical gas migration has occurred. Migration was probably aided by fractures that formed during maximum burial and peak gas generation. Except for one sample collected at 1718 m, "CC2compositions above 1950 m were not determined due to insufficient sample sizes. Below 1950 m, gas contents abruptly increase and approach 10-4' gas units. These gases have "C compositions indicative of thermogenic origin. Gases between 1950 and 2450 m have relatively uniform geochemistries (8"Cc, =-39.9 0?.3%ol 613C C2 =-27.4 I?.i%ol CI/Cl-3 = 0-91 0?.03), and are chemically distinct and therefore Renetically different from gases between 2450 and 2791 M (513C ci =-37.9 +-O.2%og 813C C2 =-26.4 0?.5%09 CI/Cl-3 = 0.88 0?.01). Gases of the latter group were probably derived from coalbeds that comprise the Cameo Group, as abundant coals are found between 2450 and 2630 m. Only three thin coalbeds occur within the Coal Ridge Group between 1950 and 2450 m, so gases from this interval were probably derived from interbedded shales. Core and cuttings samples were also collected and sealed in cans from several intervals for geochemical analyses. Canned methanes at or above 858 m are "C-enriched by 13 to 33%o compared with logging methanes at equivalent intervals. Below 1934 m, however, 813C ci values for core and cuttings are comparable to logging gas values. This observation suggests that 813 Cc, discrepancies above 858 m are related to low gas contents in the core and cutting samples. Therefore, geochemical data from core and cuttings were not used to assess migration or to interpret gas origin.

Katz, David Jonathan

1997-01-01T23:59:59.000Z

379

Proposed On-Site Disposal Facility (OSDF) at the Paducah Gaseous...  

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

range from low intensity applications such as a nature park with walking trails to high intensity applications such as athletic facilities (e.g., soccer fields, baseball park,...

380

Gaseous Laser Targets and Optical Dignostics for Studying Compressible Turbulent Hydrodynamic Instabilities  

Science Conference Proceedings (OSTI)

The possibility of studying compressible turbulent flows using gas targets driven by high power lasers and diagnosed with optical techniques is investigated. The potential advantage over typical laser experiments that use solid targets and x-ray diagnostics is more detailed information over a larger range of spatial scales. An experimental system is described to study shock - jet interactions at high Mach number. This consists of a mini-chamber full of nitrogen at a pressure {approx} 1 atms. The mini-chamber is situated inside a much larger vacuum chamber. An intense laser pulse ({approx}100J in {approx} 5ns) is focused on to a thin {approx} 0.3{micro}m thick silicon nitride window at one end of the mini-chamber. The window acts both as a vacuum barrier, and laser entrance hole. The ''explosion'' caused by the deposition of the laser energy just inside the window drives a strong blast wave out into the nitrogen atmosphere. The spherical shock expands and interacts with a jet of xenon introduced though the top of the mini-chamber. The Mach number of the interaction is controlled by the separation of the jet from the explosion. The resulting flow is visualized using an optical schlieren system using a pulsed laser source at a wavelength of 0.53 {micro}m. The technical path leading up to the design of this experiment is presented, and future prospects briefly considered. Lack of laser time in the final year of the project severely limited experimental results obtained using the new apparatus.

Edwards, M J; Hansen, J; Miles, A R; Froula, D; Gregori, G; Glenzer, S; Edens, A; Dittmire, T

2005-02-08T23:59:59.000Z

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Characterization of gaseous and particulate emissions from combustion of algae based methyl ester biodiesel.  

E-Print Network (OSTI)

??The advantages to using biodiesel in place of petroleum diesel are also accompanied by disadvantages. Biodiesel is usually made from crops that are also used (more)

Fisher, Bethany Cheryl

2009-01-01T23:59:59.000Z

382

Process and system for producing high-density pellets from a gaseous medium  

DOE Patents (OSTI)

A process and system for producing pellets of high density carbon dioxide or other gases utilize a chamber containing a plurality of cell-like freezing compartments within which ice is to be formed. A gas desired to be frozen into ice is introduced into the chamber while the internal pressure of the chamber is maintained at a level which is below the equilibrium triple pressure of the gas. The temperature of the freezing compartments is lowered to a temperature which is below the equilibrium vapor pressure temperature of the gas at the chamber pressure so that the gas condenses into ice within the compartments. The temperature of the freezing compartments is thereafter raised so that the ice is thereby released from and falls out of the compartments as pellets for collection.

Foster, Christopher A. (Clinton, TN)

1999-01-01T23:59:59.000Z

383

Experimental simulation of a gaseous divertor: Measurements of neutral density inside the plasma  

DOE Green Energy (OSTI)

Direct measurements of the neutral density in the core of hydrogen plasma with a density of 3--4{times}10{sup 14} cm{sup {minus}3} and electron temperature of 15--20 eV in a magnetic field of 0.2 T, injected into hydrogen neutral gas at a pressure of 0.1--2 Torr are performed with plasma emission spectroscopy. The data are in agreement with the results of measured plasma decay (Phys. Fluids B {bold 2}, 837 (1990)) and can be explained by radial pressure balance between fast neutrals inside the plasma and cold background gas.

Fiksel, G.; Kishinevsky, M.; Hershkowitz, N. (Department of Nuclear Engineering and Engineering Physics, University of Wisconsin, Madison, Wisconsin 53706-1687 (US))

1991-03-01T23:59:59.000Z

384

Emission and Long-Range Transport of Gaseous Mercury from a  

E-Print Network (OSTI)

Forest [Petersham, MA, U.S.A. (42°54 N, 72°18 W)] during early July 2002 show clear evidence of long Petersham, MA (42°54 N, 72°18 W). This is a rural site lo- cated >100 km from Boston, MA and Hartford, CT

Lee, Xuhui

385

Effects of Gaseous Impurities in Hydrogen on the Long Term Cycling ...  

Science Conference Proceedings (OSTI)

Symposium, Hydrogen Storage in Materials: Theory and Experiment ... the Gibbs energies of formation of Li3N (?Go=-100.16 kJ/mol)...

386

Method and apparatus for rapid adjustment of process gas inventory in gaseous diffusion cascades  

DOE Patents (OSTI)

This invention relates to an improved method and system for making relatively large and rapid adjustments in the process gas

Dyer, Robert H. (Oak Ridge, TN); Fowler, Andrew H. (Oak Ridge, TN); Vanstrum, Paul R. (Oak Ridge, TN)

1977-01-01T23:59:59.000Z

387

LITERATURE SURVEY OF GASEOUS HYDROGEN EFFECTS ON THE MECHANICAL PROPERTIES OF CARBON AND LOW ALLOY STEELS  

DOE Green Energy (OSTI)

Literature survey has been performed for a compendium of mechanical properties of carbon and low alloy steels following hydrogen exposure. The property sets include yield strength, ultimate tensile strength, uniform elongation, reduction of area, threshold stress intensity factor, fracture toughness, and fatigue crack growth. These properties are drawn from literature sources under a variety of test methods and conditions. However, the collection of literature data is by no means complete, but the diversity of data and dependency of results in test method is sufficient to warrant a design and implementation of a thorough test program. The program would be needed to enable a defensible demonstration of structural integrity of a pressurized hydrogen system. It is essential that the environmental variables be well-defined (e.g., the applicable hydrogen gas pressure range and the test strain rate) and the specimen preparation be realistically consistent (such as the techniques to charge hydrogen and to maintain the hydrogen concentration in the specimens).

Lam, P; Andrew Duncan, A; Robert Sindelar, R; Thad Adams, T

2009-04-27T23:59:59.000Z

388

GASEOUS HYDROGEN EFFECTS ON THE MECHANICAL PROPERTIES OF CARBON AND LOW ALLOY STEELS (U)  

DOE Green Energy (OSTI)

This report is a compendium of sets of mechanical properties of carbon and low alloy steels following the short-term effects of hydrogen exposure. The property sets include the following: Yield Strength; Ultimate Tensile Strength; Uniform Elongation; Reduction of Area; Threshold Cracking, K{sub H} or K{sub th}; Fracture Toughness (K{sub IC}, J{sub IC}, and/or J-R Curve); and Fatigue Crack Growth (da/dN). These properties are drawn from literature sources under a variety of test methods and conditions. However, the collection of literature data is by no means complete, but the diversity of data and dependency of results in test method is sufficient to warrant a design and implementation of a thorough test program. The program would be needed to enable a defensible demonstration of structural integrity of a pressurized hydrogen system. It is essential that the environmental variables be well-defined (e.g., the applicable hydrogen gas pressure range and the test strain rate) and the specimen preparation be realistically consistent (such as the techniques to charge hydrogen and to maintain the hydrogen concentration in the specimens).

Lam, P

2006-06-08T23:59:59.000Z

389

LITERATURE SURVEY OF GASEOUS HYDROGEN EFFECTS ON THE MECHANICAL PROPERTIES OF CARBON AND LOW ALLOY STEELS  

DOE Green Energy (OSTI)

Literature survey has been performed for a compendium of mechanical properties of carbon and low alloy steels following hydrogen exposure. The property sets include yield strength, ultimate tensile strength, uniform elongation, reduction of area, threshold stress intensity factor, fracture toughness, and fatigue crack growth. These properties are drawn from literature sources under a variety of test methods and conditions. However, the collection of literature data is by no means complete, but the diversity of data and dependency of results in test method is sufficient to warrant a design and implementation of a thorough test program. The program would be needed to enable a defensible demonstration of structural integrity of a pressurized hydrogen system. It is essential that the environmental variables be well-defined (e.g., the applicable hydrogen gas pressure range and the test strain rate) and the specimen preparation be realistically consistent (such as the techniques to charge hydrogen and to maintain the hydrogen concentration in the specimens).

Lam, P; Robert Sindelar, R; Thad Adams, T

2007-04-18T23:59:59.000Z

390

Use in combustion processes for a new type of gaseous fuel based on hydrogen  

Science Conference Proceedings (OSTI)

The paper approaches a very actual problem worldwide, concerning the replacing, in combustion processes, of classical fossil fuels by clean energy sources, in order to reduce the greenhouse effect gases, as well as for fossil fuels' saving. The experiments ... Keywords: burner, clean energy, energy saving, flame, greenhouse effect gases, hydrogen

Lucian Paunescu; Gheorghe Surugiu; Ion Melinte; Corneliu Dica; Paul Dan Stanescu; Gheorghe Iorga; Horia Necula

2007-05-01T23:59:59.000Z

391

Numerical estimation on free electrons generated by shielded radioactive materials under various gaseous environments  

SciTech Connect

We report simulation results on generation of free electrons due to the presence of radioactive materials under controlled pressure and gases using a general Monte Carlo transport code (MCNPX). A radioactive material decays to lower atomic number, simultaneously producing high energy gamma rays that can generate free electrons via various scattering mechanisms. This paper shows detailed simulation works for answering how many free electrons can be generated under the existence of shielded radioactive materials as a function of pressure and types of gases.

Kim, D. S. [Department of Physics, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798 (Korea, Republic of); Lee, W. S.; So, J. H. [Agency for Defence Development (ADD), Daejeon 305-152 (Korea, Republic of); Choi, E. M. [Department of Physics, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798 (Korea, Republic of); School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798 (Korea, Republic of)

2013-06-15T23:59:59.000Z

392

Integrated Advanced Reciprocating Internal Combustion Engine System for Increased Utilization of Gaseous Opportunity Fuels  

SciTech Connect

The project is addressing barriers to or opportunities for increasing distributed generation (DG)/combined heat and power (CHP) use in industrial applications using renewable/opportunity fuels. This project brings together novel gas quality sensor (GQS) technology with engine management for opportunity fuels such as landfill gas, digester gas and coal bed methane. By providing the capability for near real-time monitoring of the composition of these opportunity fuels, the GQS output can be used to improve the performance, increase efficiency, raise system reliability, and provide improved project economics and reduced emissions for engines used in distributed generation and combined heat and power.

Pratapas, John; Zelepouga, Serguei; Gnatenko, Vitaliy; Saveliev, Alexei; Jangale, Vilas; Li, Hailin; Getz, Timothy; Mather, Daniel

2013-08-31T23:59:59.000Z

393

Kinetically driven helix formation during the homopolymer collapse process  

E-Print Network (OSTI)

Using Langevin simulations, we find that simple 'generic' bead-and-spring homopolymer chains in a sufficiently bad solvent spontaneously develop helical order during the process of collapsing from an initially stretched conformation. The helix formation is initiated by the unstable modes of the straight chain, which drive the system towards a long-lived metastable transient state. The effect is most pronounced if hydrodynamic interactions are screened.

Sid Ahmed Sabeur; Fatima Hamdache; Friederike Schmid

2008-03-07T23:59:59.000Z

394

Conversion of waste organic material to gasoline  

DOE Green Energy (OSTI)

The present status of a development project to convert organic waste material to gasoline has been described. The method is based on the Fischer-Tropsch synthesis of straight-chain hydrocarbons from the pyrolysis gas with the subsequent reforming of these hydrocarbons to gasoline. The concept appears technically feasible. Implementation on a large scale is dependent on refinements in process performance and demonstrated operational reliability. If these objectives are achieved, the process economics could be attractive.

Kuester, J.L.

1976-01-01T23:59:59.000Z

395

Original article: Analytical solution of gaseous slip flow between two parallel plates described by the Oseen equation  

Science Conference Proceedings (OSTI)

This paper is focused on the derivation of analytical solution describing the development of gas pressure driven microflow in a gap between two parallel plates. The gas flow is assumed to be steady, laminar and incompressible. For the mathematical description ... Keywords: Analytical solution, Oseen equation, Pressure driven microflow, Slip flow regime, Velocity profile development

Jan Vimmr; Hynek KlTerka; Marek Hajman

2012-06-01T23:59:59.000Z

396

Environmental assessment for the construction and operation of waste storage facilities at the Paducah Gaseous Diffusion Plant, Paducah, Kentucky  

Science Conference Proceedings (OSTI)

DOE is proposing to construct and operate 3 waste storage facilities (one 42,000 ft{sup 2} waste storage facility for RCRA waste, one 42,000 ft{sup 2} waste storage facility for toxic waste (TSCA), and one 200,000 ft{sup 2} mixed (hazardous/radioactive) waste storage facility) at Paducah. This environmental assessment compares impacts of this proposed action with those of continuing present practices aof of using alternative locations. It is found that the construction, operation, and ultimate closure of the proposed waste storage facilities would not significantly affect the quality of the human environment within the meaning of NEPA; therefore an environmental impact statement is not required.

NONE

1994-06-01T23:59:59.000Z

397

Direct Energy Conversion Fission Reactor, Gaseous Core Reactor with Magnetohydrodynamic (MHD) Generator; Final Report - Part I and Part II  

SciTech Connect

This report focuses on the power conversion cycle and efficiency. The technical issues involving the ionization mechanisms, the power management and distribution and radiation shielding and safety will be discussed in future reports.

Samim Anghaie; Blair Smith; Travis Knight

2002-11-12T23:59:59.000Z

398

High voltage research (breakdown strengths of gaseous and liquid insulators). Semiannual report, April 1--September 30, 1977  

DOE Green Energy (OSTI)

Direct current breakdown strength measurements on a large number of multicomponent gas mixtures at low (approximately less than 1 atm) and high (approximately less than 5 atm) pressures led to the discovery of many gas mixtures of electron-attaching gases and strongly electron-attaching gases with N/sub 2/ and C/sub 3/F/sub 8/ which are superior to SF/sub 6/. Of special significance are mixtures containing C/sub 4/F/sub 6/ (perfluoro-2-butyne). The breakdown strength of one such mixture (20 percent C/sub 4/F/sub 6/ to 80 percent SF/sub 6/) is approximately 30 percent higher than pure SF/sub 6/ under identical conditions, both at low (approximately 0.7 atm) and high (4.6 atm) pressures. Perfluorocyclohexene (C/sub 6/F/sub 10/) and C/sub 5/F/sub 8/ (perfluorocyclopentene) were found at low pressure (approximately 0.2 atm) to be, respectively, approximately 2.1 and 2.2 times better than SF/sub 6/ under comparable conditions; they both have a potential as additives in gas mixtures. The effect of the inelastic electron scattering properties of a gas via negative ion resonances in the low-energy range (1 to approximately 4 eV) on the breakdown strength has been demonstrated for H/sub 2/, N/sub 2/, and CO and binary mixtures of these with SF/sub 6/ and C/sub 4/F/sub 6/ (perfluoro-2-butyne). The construction of a new high pressure (to approximately 11 atm), variable temperature (-50/sup 0/C to + 150/sup 0/C) apparatus has been completed and a practical test facility utilizing cylindrical electrode geometries has been put into operation; the first results on the latter apparatus were on SF/sub 6/-N/sub 2/ and c-C/sub 4/F/sub 8/--N/sub 2/ mixtures. Studies of environmental effects of dielectric gases via their electron-impact-induced decompositions and analysis of their breakdown products have begun using mass spectrometry and gas chromatography; C/sub 4/F/sub 6/ (perfluoro-2-butyne) seems to be resistant to electron-impact-induced decomposition indicating long-term stability.

Christophorou, L. G.; James, D. R.; Pai, R. Y.; Mathis, R. A.; Pace, M. O.; Bouldin, D. W.; Christodoulides, A. A.; Chan, C. C.

1977-11-01T23:59:59.000Z

399

Characterization and analysis of Devonian shales as related to release of gaseous hydrocarbons. Well R-109, Washington County, Ohio  

DOE Green Energy (OSTI)

Coring of Well R-109 (Washington County, Ohio) was accomplished in August 1976. A total of 25 samples were collected. Hydrocarbon gas analyses indicate that higher chain hydrocarbon gases (C/sub 2/-C/sub 5/) make up a significant portion of total hydrocarbons in the shales, but methane is still the dominant single gas. Distinct relationships exist between the carbon and hydrocarbon gas contents, showing increase in hydrocarbon gas contents with increasing carbon. Similar relationships between hydrogen and hydrocarbon gas contents exist, though they are not as pronounced. Gas contents appear not to be related to the bulk densities in any quantitative manner, though organic contents (carbon and hydrogen) seem to be related to bulk density values much more clearly. R-109 shales are virtually impermeable to gases and other fluids, as attempted helium gas permeability measurements indicated extremely small (< 10/sup -12/ Darcy) permeability values.

Kalyoncu, R.S.; Boyer, J.P.; Snyder, M.J.

1979-06-20T23:59:59.000Z

400

Effect of Gaseous Impurities on Long-Term Thermal Cycling and Aging Properties of Complex Hydrides for Hydrogen Storage  

DOE Green Energy (OSTI)

This program was dedicated to understanding the effect of impurities on Long-Term Thermal Cycling and aging properties of Complex Hydrides for Hydrogen Storage. At the start of the program we found reversibility between Li2NH+LiH ? LiH+LiNH2 (yielding ~5.8 wt.%H capacity). Then we tested the effect of impurity in H2 gas by pressure cycling at 255oC; first with industrial gas containing ppm levels of O2 and H2O as major impurities. Both these impurities had a significant impact on the reversibility and decreased the capacity by 2.65 wt.%H. Further increase in number of cycles from 500 to 1100 showed only a 0.2 wt%H more weight loss, showing some capacity is still maintained after a significant number of cycles. The loss of capacity is attributed to the formation of ~55 wt% LiH and ~30% Li2O, as major contaminant phases, along with the hydride Li2NH phase; suggesting loss of nitrogen during cycling. The effect of 100 ppm H2O in H2 also showed a decrease of ~2.5 wt.%H (after 560 cycles), and 100ppm O2 in H2; a loss of ~4.1 wt.%. Methane impurity (100 ppm, 100cycles), showed a very small capacity loss of 0.9 wt.%H under similar conditions. However, when Li3N was pressure cycled with 100ppmN2-H2 there were beneficial effects were observed (255oC); the reversible capacity increased to 8.4wt.%H after 853 cycles. Furthermore, with 20 mol.%N2-H2 capacity increased to ~10 wt.%H after 516 cycles. We attribute this enhancement to the reaction of nitrogen with liquid lithium during cycling as the Gibbs free energy of formation of Li3N (?Go = -98.7 kJ/mol) is more negative than that of LiH (?Go = -50.3 kJ/mol). We propose that the mitigation of hydrogen capacity losses is due to the destabilization of the LiH phase that tends to accumulate during cycling. Also more Li2NH phase was found in the cycled product. Mixed Alanates (3LiNH2:Li3AlH6) showed that 7 wt% hydrogen desorbed under dynamic vacuum. Equilibrium experiments (maximum 12 bar H2) showed up to 4wt% hydrogen reversibly stored in the material after the first desorption. The activation energy was found to be 51 kJ/mol, as compared to 81 kJ/mol for pure lithium alanate. It is proposed that based on the data obtained and CALPHAD modeling that the improvement in cycling is due to the formation of pure lithium (liquid at 255oC), which is able to react with nitrogen specifically forming Li3N. The presence of nitrogen in the 80/20 molar mixtures in a hydride bed along with hydrogen causes Li to form Li3N rather than LiH, and subsequently regenerates the Li2NH phase and yields a ~10 wt.%H reversibly.

Chandra, Dhanesh (Primary Contact); Lamb, Joshua; Chien, Wen-Ming; Talekar, Anjali; and Pal, Narendra.

2011-03-28T23:59:59.000Z

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

ENERGY AND UTILITIES - Oak Ridge National Laboratory  

Summary: Problem Gaseous streams emanating from industrial processes often contain numerous gaseous byproducts that are processed as waste or directly

402

An investigation of two homologous series of carboxylic acids in Black Trona Water from the Green River Basin  

SciTech Connect

Two series of carboxylic acids were identified in the dialysate from a sample of Black Trona Water from the Green River Basin of Wyoming. One of the series consists of straight-chain dicarboxylic acids ranging in carbon number from four to fourteen. This series had been observed by previous workers. The other series, much less abundant than the dicarboxylic acids, appears to be a series of homologous tricarboxylic acids that are derivatives of succinic acid. The structures of these compounds were determined by analysis of the mass spectra of their methyl esters and trideuteromethyl esters. Definitive biological precursors of this unusual class of compounds could not be assigned.

Branthaver, J.F.; Thomas, K.P.; Logan, E.R.; Barden, R.E.

1988-01-01T23:59:59.000Z

403

Use of 2,5-dimethyl-2,5-hexane diamine as a curing agent for epoxy resins  

DOE Patents (OSTI)

Primary diamines of the formula ##STR1## wherein R is a straight chain saturated hydrocarbon of 2 to 4 carbons, a disubstituted benzene ring, or disubstituted dibenzo methane for use as a curing agent for epoxy resins. These curing agents can be used to form epoxy resin mixtures useful in filament winding and pre-impregnated fiber molding and in formulating film adhesives, powder coatings and molding powders. The epoxy mixtures form for such uses as room temperature non-reacting, intermediate stable state which has a latent cross-linking capability.

Rinde, James A. (Livermore, CA); Newey, Herbert A. (Lafayette, CA)

1981-01-01T23:59:59.000Z

404

Use of 2,5-dimethyl-2,5-hexane diamine as a curing agent for epoxy resins  

DOE Patents (OSTI)

Primary diamines are disclosed of the formula shown in a diagram wherein R is a straight chain saturated hydrocarbon of 2 to 4 carbons, a disubstituted benzene ring, or disubstituted dibenzomethane for use as a curing agent for epoxy resins. These curing agents can be used to form epoxy resin mixtures useful in filament winding and pre-impregnated fiber molding and in formulating film adhesives, powder coatings and molding powders. The epoxy mixtures form for such uses as room temperature non-reacting, intermediate stable state which has a latent cross-linking capability.

Rinde, J.A.; Newey, H.A.

1981-02-24T23:59:59.000Z

405

Notice of Availability of the Draft Environmental Assessment Addendum for Disposition of Additional Waste at the Paducah Gaseous Diffusion Plant (DOE/EA-1339A) (April 30, 2003)  

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

117 117 Federal Register / Vol. 68, No. 83 / Wednesday, April 30, 2003 / Notices Corp., Club Affiliation, Disability, Hobbies, Military Affiliation, National Merit, Athletics, Union Affiliation, Misc., Career Objective, or Programs of Study)) * ParentVeteran? (Is either parent a Veteran) * ParentDisabledInMilitary? * ParentKilledInMilitary? * HouseholdIncome (Annual) Financial Aid Wizard For each School tracked in the user's EDpack * Tuition * RoomBoard * Fees * Books * OtherExpense Used in the EFC calculation * StOfResidence * Veteran? * SchoolsOfAttendance * ChildSupport? * OtherDependants? * Orphan? * PeopleInHousehold * CollegeStudentIn House * CompletedTaxReturn? * 1040EZ Able to file 1040A or 1040EZ) * AGI (Adjusted Gross Income) * IncomeTax * Exemptions * YouWages * SpouseWages

406

Development of High Pressure Hydrogen Storage Tank for Storage and Gaseous Truck Delivery - DOE Hydrogen and Fuel Cells Program FY 2012 Annual Progress Report  

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

2 2 DOE Hydrogen and Fuel Cells Program FY 2012 Annual Progress Report Jon Knudsen (Primary Contact), Don Baldwin Lincoln Composites 5117 N.W. 40 th Street Lincoln, NE 68524 Phone: (402) 470-5039 Email: jknudsen@lincolncomposites.com DOE Managers HQ: Erika Sutherland Phone: (202) 586-3152 Email: Erika.Sutherland@ee.doe.gov GO: Katie Randolph Phone: (720) 356-1759 Email: Katie.Randolph@go.doe.gov Contract Number: DE-FG36-08GO18062 Project Start Date: July 1, 2008 Project End Date: April 30, 2013 Fiscal Year (FY) 2012 Objectives The objective of this project is to design and develop the most effective bulk hauling and storage solution for hydrogen in terms of: Cost * Safety * Weight * Volumetric Efficiency * Technical Barriers This project addresses the following technical barriers

407

Investigation of the radiological safety concerns and medical history of the late Joseph T. Harding, former employee of the Paducah Gaseous Diffusion Plant  

E-Print Network (OSTI)

An ex-employee's claims that inadequate enforcement of radiation safety regulations allowed excess radiation exposure thereby causing his deteriorating health was not substantiated by a thorough investigation.

Vallario, E J

1981-01-01T23:59:59.000Z

408

Anaerobic Digestion of Algal Biomass Residues with Nutrient Recycle Microalgae are currently considered as a renewable source of liquid and gaseous biofuels and  

E-Print Network (OSTI)

#12;1 Anaerobic Digestion of Algal Biomass Residues with Nutrient Recycle Background Microalgae a lower- value use and simpler processing approach representative of anaerobic digestion (AD) (Sialve et-in replacements of gasoline, diesel, and jet fuel (Jones & Mayfield, 2012; Regalbuto, 2009), and anaerobically

Collins, Gary S.

410

Low Cost Solar Array Project. Task I. Silicon material. Gaseous melt replenishment system. Fifth quarterly progress report, 17 April-17 July 1980  

DOE Green Energy (OSTI)

The objective of this program is to develop an improved silicon production reactor with periodic batch delivery of product to either a casting or shotting process or through a liquid silicon transfer system directly to a crystal growth system. Progress is reported. The processes and equipment are scaled such that a modest investment can make available to the Czochralski crystal grower a low cost source of silicon. In addition, the smaller scale of operation means that the systems can be put into operation without large capital investments, guarantees of markets, etc. The chemical reactions are those in commercial usage now: deposition from a hydrogen - chlorosilane mixture. The major innovation is in reactor design which allows a high productivity of silicon. The reactor has been conservatively sized on the basis of epitaxial deposition rates. The conclusion of this calculation is that a reasonably sized system can produce rapidly enough to keep pace with either 10cm or 12cm diameter Czochralski crystal growth operating in a semi-continuous mode. (WHK)

Jewett, D.N.; Bates, H.E.; Hill, D.M.

1980-01-01T23:59:59.000Z

411

Environmental site description for a Uranium Atomic Vapor Laser Isotope Separation (U-AVLIS) production plant at the Oak Ridge Gaseous Diffusion Plant Site  

Science Conference Proceedings (OSTI)

In January 1990, the Secretary of Energy approved a plan for the demonstration and deployment of the Uranium Atomic Vapor Laser Isotope Separation (U-AVLIS) technology, with the near-term goal to provide the necessary information to make a deployment decision by November 1992. The U-AVLIS process is based on electrostatic extraction of photoionized U-235 atoms from an atomic vapor stream created by electron-beam vaporization of uranium metal alloy. A programmatic document for use in screening DOE sites to locate the U-AVLIS production plant was developed and implemented in two parts (Wolsko et al. 1991). The first part consisted of a series of screening analyses, based on exclusionary and other criteria, that identified a reasonable number of candidate sites. These sites were then subjected to a more rigorous and detailed comparative analysis for the purpose of developing a short list of reasonable alternative sites for later environmental examination. This environmental site description (ESD) provides a detailed description of the ORGDP site and vicinity suitable for use in an environmental impact statement (EIS). The report is based on existing literature, data collected at the site, and information collected by Argonne National Laboratory (ANL) staff during a site visit. The organization of the ESD is as follows. Topics addressed in Sec. 2 include a general site description and the disciplines of geology, water resources, biotic resources, air resources, noise, cultural resources, land use, socioeconomics, and waste management. Identification of any additional data that would be required for an EIS is presented in Sec. 3. Following the site description and additional data requirements, Sec. 4 provides a short, qualitative assessment of potential environmental issues. 37 refs., 20 figs., 18 tabs.

Not Available

1991-09-01T23:59:59.000Z

412

Environmental site description for a Uranium Atomic Vapor Laser Isotope Separation (U-AVLIS) production plant at the Paducah Gaseous Diffusion Plant site  

Science Conference Proceedings (OSTI)

Uranium enrichment in the United States has utilized a diffusion process to preferentially enrich the U-235 isotope in the uranium product. The U-AVLIS process is based on electrostatic extraction of photoionized U-235 atoms from an atomic vapor stream created by electron-beam vaporization of uranium metal alloy. The U-235 atoms are ionized when precisely tuned laser light -- of appropriate power, spectral, and temporal characteristics -- illuminates the uranium vapor and selectively photoionizes the U-235 isotope. A programmatic document for use in screening DOE site to locate a U-AVLIS production plant was developed and implemented in two parts. The first part consisted of a series of screening analyses, based on exclusionary and other criteria, that identified a reasonable number of candidate sites. These sites were subjected to a more rigorous and detailed comparative analysis for the purpose of developing a short list of reasonable alternative sites for later environmental examination. This environmental site description (ESD) provides a detailed description of the PGDP site and vicinity suitable for use in an environmental impact statement (EIS). The report is based on existing literature, data collected at the site, and information collected by Argonne National Laboratory (ANL) staff during a site visit. 65 refs., 15 tabs.

Marmer, G.J.; Dunn, C.P.; Moeller, K.L.; Pfingston, J.M.; Policastro, A.J.; Yuen, C.R.; Cleland, J.H. (ed.)

1991-09-01T23:59:59.000Z

413

Analysis of criticality alarm system response to an accidental criticality outside the cascade process buildings at the Portsmouth Gaseous Diffusion Plant  

SciTech Connect

Neutron dose rates at detector positions within the X-326, X-330, and X-333 buildings were evaluated for an accidental criticality outside of each building. As fissile material bearing equipment and containers are moved to and from each building, the possibility exists for a criticality accident to occur. This analysis demonstrates that a criticality accident which occurs at any position on the access roads alongside a process building can be detected. The detectable area includes all points within the access road boundary along each face of each building. This analysis also demonstrates that the criticality alarm systems of the process buildings will respond to criticality events occurring within the tie lines connecting the process buildings. This analysis was performed using the MCNP Monte Carlo neutron-proton transport code. The radiation source is the neutron leakage spectrum of a critical solution of 4.95 percent enriched UO{sub 2}F{sub 2}-H{sub 2}O at a power level corresponding to the ANSI ANS 8.3. Standard minimum accident of concern. The evaluated neutron fluxes were converted to neutron dose rates by use of the Henderson free-in-air response functions. Critical source positions correspond to the farthest source to detector distances on the access roads along each face of the three buildings, and the centerpoint of the building tie lines. This report contains the methodology used for this study, a background on the data used, and a section about the assumptions and limits to all conclusions.

Negron, S.B.; Tayloe, R.W. Jr.; Dobelbower, M.C. [Battelle, Columbus, OH (United States)

1994-07-01T23:59:59.000Z

414

Characterization and analysis of Devonian shales as related to release of gaseous hydrocarbons. Quarterly technical progress report, April--June 1978  

DOE Green Energy (OSTI)

Objective is to determine the relationships between the shale characteristics, hydrocarbon gas contents, and well location, for assessing the productive capacity of the Eastern Devonian Gas Shale deposits and guiding research, development, and demonstration projects to enhance the recovery of natural gas from the shale deposits. One well was sampled during this reporting period. Another well from Monongalia County, WV (M-1) was cored in April. 31 samples were obtained for Battelle with additional 55 samples canned for other DOE contractors. Characterization tasks on shale samples from R-146 (Mason County, WV.) and M-1 wells (Monongalia) have been completed. In the preliminary analysis correlations were observed between the hydrocarbon gas contents and can pressure, propane content, well location, oxygen content CO/sub 2/ content, bulk density and carbon contents. Higher pressures are attributed to higher hydrocarbon gas contents. For high gas pressures, propane content is an important indication of hydrocarbon gas content. At low gas pressure, butane contents more accurately predict the hydrocarbon gas contents. High CO/sub 2/ and carbon contents indicate high hydrocarbon gas values, whereas oxygen contents are inversely related to hydrocarbon gas contents. Analysis of the limited wire-line log data shows that correlations between the laboratory and well log data can be utilized to predict potential hydrocarbon gas contents of the wells. 15 tables, 27 figures.

Kalyoncu, R.S.; Snyder, M.J.

1978-08-08T23:59:59.000Z

415

Dose Modeling Evaluations and Technical Support Document for the Authorized Limits Request for the C-746-U Landfill at the Paducah Gaseous Diffusion Plant, Paducah, Kentucky  

SciTech Connect

This report contains the technical basis in support of the DOE?s derivation of Authorized Limits (ALs) for the DOE Paducah C-746-U Landfill. A complete description of the methodology, including an assessment of the input parameters, model inputs, and results is provided in this report. This report also provides initial recommendations on applying the derived soil guidelines. The ORISE-derived soil guidelines are specifically applicable to the Landfill at the end of its operational life. A suggested 'upper bound' multiple of the derived soil guidelines for individual shipments is provided.

Boerner, A. J. [IEAVP, ORISE, Oak Ridge, TN (United States); Maldonado, D. G. [IEAVP, ORISE, Oak Ridge, TN (United States; Hansen, Tom [Ameriphysics, LLC (United States)

2012-06-01T23:59:59.000Z

416

Geochemical assessment of gaseous hydrocarbons: mixing of bacterial and thermogenic methane in the deep subsurface petroleum system, Gulf of Mexico continental slope  

E-Print Network (OSTI)

Mixtures of bacterial and thermogenic methane are found both at vents at the seafloor and in reservoirs in the deep subsurface of the Gulf of Mexico continental slope. The C1-C5 gas that most recently charged reservoirs of Jolliet (GC 184), Genesis (GC 160/161) and Petronius (VK 786) fields is estimated to include 17%-28%, 31%-51%, 31%-49% bacterial methane, respectively. Geochemical assessment of the reservoir gas in the fields show that the gas may be the product of thermal cracking of Upper Jurassic crude oil before final migration to the reservoirs. The gas from three different fields is of similar thermal maturity levels. In contrast to oil in reservoirs in the fields, which shows biodegradation effects, the C1-C5 reservoir gas is unaltered by biodegradation. Late gas migration may have occurred at or near present burial depth and flushed the reservoir system of previously biodegraded hydrocarbon gas to include any previous bacterial methane. Molecular and isotopic properties of reservoir gas and oil suggest that bacterial methane mixed with thermogenic hydrocarbon gas before entering the reservoirs. Thus the source of the bacterial methane is logically deeper than the present depth (>~4 km) and temperatures of the reservoirs. High sedimentation rate and low geothermal gradient may offer conditions favorable for generation and preservation of bacterial methane in deep subsurface petroleum system of the Gulf slope. Bacterial methane dispersed across the large drainage areas of the deep subsurface petroleum system may have been swept by migrating fluids at >4 km, and then charged both vents (GC 185, GC 233 and GC 286) at the seafloor and reservoirs in the deep subsurface. The volume of bacterial methane from geologically significant depth in rapidly subsiding basins may be underestimated.

Ozgul, Ercin

2002-08-01T23:59:59.000Z

417

Organic constituents in sour condensates from shale-oil and petroleum-crude runs at Sohio's Toledo refinery: identification and wastewater-control-technology considerations  

SciTech Connect

Samples of sour condensate generated from the continuous processing of both crude shale oil and petroleum crude were collected and extracted with methylene chloride. The extracts were analyzed using capillary-column gas chromatography/mass spectrometry at Argonne National Laboratory and Radian Corporation. Qualitatively, the predominant types of organic compounds present in the shale-oil sour condensate were pyridines and anilines; semiquantitatively, these compounds were present at a concentration of 5.7 ppM, or about 78% of the total concentration of components detected. In contrast, straight-chain alkanes were the predominant types of compounds found in the sour condensate produced during isocracking of conventional crude oil. The approximate concentration of straight-chain alkanes, 8.3 ppM, and of other branched and/or unsaturated hydrocarbons, 6.8 ppM, amounted to 88% of the total concentration of components detected in the sour condensate from the petroleum-crude run. Nitrogen compounds in the shale-oil sour condensate may necessitate alterations of the sour water and refinery wastewater-treatment facilities to provide for organics degradation and to accommodate the potentially greater ammonia loadings. This would include use of larger amounts of caustic to enhance ammonia removal by steam stripping. Possible problems associated with biological removal of organic-nitrogen compounds should be investigated in future experimental shale-oil refining runs.

Wingender, R J; Harrison, W; Raphaelian, L A

1981-02-01T23:59:59.000Z

418

Microsoft Word - RealTimeRadsWPIFINALFeb06.doc  

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

training was provided by BNL, and was essential for the successful deployment of ISOCS at NTS. G.9 PADUCAH GASEOUS DIFFUSION PLANT, KENTUCKY The Paducah Gaseous Diffusion Plant's...

419

Hydrogen Fuel Purity Guidelines  

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

Metallic, non-metallic, chemical media chemical media Bulk Storage Bulk Storage steel steel composite composite Delivery Delivery Cryogenic Cryogenic Gaseous Gaseous ...

420

High Temperature Chemical Kinetic Combustion Modeling of Lightly Methylated Alkanes  

DOE Green Energy (OSTI)

Conventional petroleum jet and diesel fuels, as well as alternative Fischer-Tropsch (FT) fuels and hydrotreated renewable jet (HRJ) fuels, contain high molecular weight lightly branched alkanes (i.e., methylalkanes) and straight chain alkanes (n-alkanes). Improving the combustion of these fuels in practical applications requires a fundamental understanding of large hydrocarbon combustion chemistry. This research project presents a detailed high temperature chemical kinetic mechanism for n-octane and three lightly branched isomers octane (i.e., 2-methylheptane, 3-methylheptane, and 2,5-dimethylhexane). The model is validated against experimental data from a variety of fundamental combustion devices. This new model is used to show how the location and number of methyl branches affects fuel reactivity including laminar flame speed and species formation.

Sarathy, S M; Westbrook, C K; Pitz, W J; Mehl, M

2011-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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.


421

Lubricants or lubricant additives composed of ionic liquids containing ammonium cations  

Science Conference Proceedings (OSTI)

A lubricant or lubricant additive is an ionic liquid alkylammonium salt. The alkylammonium salt has the structure R.sub.xNH.sub.(4-x).sup.+,[F.sub.3C(CF.sub.2).sub.yS(O).sub.2].sub.2N.sup- .- where x is 1 to 3, R is independently C.sub.1 to C.sub.12 straight chain alkyl, branched chain alkyl, cycloalkyl, alkyl substituted cycloalkyl, cycloalkyl substituted alkyl, or, optionally, when x is greater than 1, two R groups comprise a cyclic structure including the nitrogen atom and 4 to 12 carbon atoms, and y is independently 0 to 11. The lubricant is effective for the lubrication of many surfaces including aluminum and ceramics surfaces.

Qu, Jun (Knoxville, TN); Truhan, Jr.,; John J. (Cookeville, TN); Dai, Sheng (Knoxville, TN); Luo, Huimin (Knoxville, TN); Blau, Peter J. (Knoxville, TN)

2010-07-13T23:59:59.000Z

422

Modeling the motion of a hot, turbulent gas  

Science Conference Proceedings (OSTI)

Keywords: animation, convection, gas simulations, gaseous phenomena, physics-based modeling, smoke, steam, turbulent flow

Nick Foster; Dimitris Metaxas

1997-08-01T23:59:59.000Z

423

EINDHOVEN UNIVERSITY OF TECHNOLOGY Department of Mathematics and Computer Science  

E-Print Network (OSTI)

processes. For instance, in the study of combustion phenomena in premixed gaseous substances, oil shale

Eindhoven, Technische Universiteit

424

Alternative Energy Development and China's Energy Future  

E-Print Network (OSTI)

gaseous diffusion or gas centrifuge, the mass differencesenrichment processes, the gas centrifuge process was first

Zheng, Nina

2012-01-01T23:59:59.000Z

425

EA-1599: Disposition of Radioactively Contaminated Nickel Located at the East Tennessee Technology Park, Oak Ridge, Tennessee, and the Paducah Gaseous Diffusion Plant, Paducah, Kentucky, for Controlled Radiological Applications  

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

This EA was being prepared to evaluate potential environmental impacts of a proposal to dispose of nickel scrap that is volumetrically contaminated with radioactive materials and that DOE recovered from equipment it had used in uranium enrichment. This EA is on hold.

426

High voltage research (breakdown strengths of gaseous and liquid insulators) and environmental effects of dielectric gases. Semiannual report, April 1, 1979-September 30, 1979. [Health and Safety Research Div. , ORNL  

Science Conference Proceedings (OSTI)

A number of gas mixtures are suggested for industrial-scale testing. Electron attachment rates were measured and unfolded to give attachment cross section functions for CCl/sub 3/F, CCl/sub 2/F/sub 2/, and CClF/sub 3/ each in N/sub 2/, and for CCl/sub 3/F in Ar. Electron attachment rates were measured also for n-C/sub 6/F/sub 14/ in both Ar and N/sub 2/. The effects of molecular structure on energy, cross section, and lifetime of negative ion states of organic molecules were considered. A study was made of the potential role of electron detachment in breakdown. The role of dipolar scattering of electrons in inhibiting breakdown was investigated. The nature of synergisms among constituents of a gas dielectric mixture is discussed. Examples are cited from recent breakdown measurements. Breakdown measurements in plane-plane geometry were made for CF/sub 4/, 1,1,1-CH/sub 3/CF/sub 3/, and CHF/sub 3/. Similar measurements were conducted with binary mixtures containing one of (c-C/sub 4/F/sub 8/, SF/sub 6/) and one of (CF/sub 4/, CH/sub 2/F/sub 2/, 1,1,1-CH/sub 3/CF/sub 3/, CH/sub 2/F/sub 2/). Of special interest in these results were observed synergisms and the effect of dipole moment on the breakdown strengths. The initial fragmentation of 1,1,2-C/sub 2/Cl/sub 3/F/sub 3/ under electron impact was studied. Final decomposition products of sparked SF/sub 6//2-C/sub 4/F/sub 6/ mixtures were identified and quantified. The breakdown products of SF/sub 6/ were studied. Impulse measurements concentrated on c-C/sub 4/F/sub 8//SF/sub 6/ mixtures. Values of V/sub 50/, V/sub NO/, and V/sub 10x/ were obtained and evaluated. In the practical conditions of cylindrical geometry with and without surface roughness, many multicomponent mixtures of the gases SF/sub 6/, c-C/sub 4/F/sub 8/, 2-C/sub 4/F/sub 8/, N/sub 2/, and 1,1,1-CH/sub 3/CF/sub 3/ were tested, at both 1 and 4.4 atmospheres. The electric fields were calculated. In the study of liquid dielectrics n-hexane and perfluoro-n-hexane were tested. 35 figures, 20 tables.

Christophorou, L.G.; James, D.R.; Pai, R.Y.; Mathis, R.A.; Sauers, I.; Frees, L.; Pace, M.O.; Bouldin, D.W.; Chan, C.C.

1980-01-01T23:59:59.000Z

427

Assessment of the technical and economic feasibility of converting wood residues to liquid and gaseous fuel products using state-of-the-art and advanced coal conversion technology. Third quarterly report, December 1, 1978--February 28, 1979  

DOE Green Energy (OSTI)

The approach to be used in evaluating coal gasification technologies for gasification of wood is outlined. The coal gasification technologies to be evaluated and their status are tabulated. The parameters critical to the development of wood gasification (technical risk, economics, institutional factors, and environmental impacts) are briefly discussed. (JSR)

Not Available

1979-05-01T23:59:59.000Z

428

Photodissociation Dynamics of Gaseous CpCo(CO)2 and Ligand Exchange Reactions of CpCoH2 with C3H4, C3H6, and NH3  

E-Print Network (OSTI)

of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States *S Supporting CpCoH2 collisions with methane or propane (L = CH4 or C3H8), a molecular beam containing CpCoCH4 state electronic configuration. A large potential energy barrier prevents access to the reactive excited

Davis, H. Floyd

429

www.eia.gov  

U.S. Energy Information Administration (EIA)

200 Mile Electric Vehicle TST004:ca_Plug-inGasoli Plug-in 10 Gasoline Hybrid TST004: ... Electric Hybrid TST004:ta_GassyGaseous Gaseous (Propane and ...

430

Method of recovering uranium hexafluoride  

DOE Patents (OSTI)

A method of recovering uranium hexafluoride from gaseous mixtures which comprises adsorbing said uranium hexafluoride on activated carbon is described.

Schuman, S.

1975-12-01T23:59:59.000Z

431

NIST Physics Lab: Tech. Activities 2000 - Introduction  

Science Conference Proceedings (OSTI)

... electrons and photons transfer energy to gaseous ... data support for national needs in ... plasmas, spectrochemistry, illumination technology, and laser ...

432

Print  

Science Conference Proceedings (OSTI)

OVERVIEW. Pot emissions; Environmental regulations and permits; History of GTCs. FLUORIDE EMISSIONS. The Gaseous and Particulate Forms of Fluorides ...

433

xml version="1.0" encoding="UTF-8"?>

Note: This page contains sample records for the topic "gaseous straight-chain hydrocar" 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

Generation, Detection and Characterization of Gas-phase Transition Metal Containing Molecules  

SciTech Connect

The reactive products of laser ablated metals with simple gaseous reagents were characterized using high resolution molecular beam optical spectroscopy.

Timothy C. Steimle

2005-06-28T23:59:59.000Z

442

Technical Plan --Codes and Standards 3.7 Hydrogen Codes and Standards  

E-Print Network (OSTI)

as a chemical feedstock, but its use as an energy carrier on a large-scale commercial basis remains largely by the International Organization for Standardization (ISO) for gaseous hydrogen refueling (TS 20012) and Multi standards for on-board liquid- (ISO 13985) and gaseous- or gaseous blend- (ISO 15869) hydrogen storage

443

Reaction products of aquatic humic substances with chlorine. Environ. Health Perspect. 46  

E-Print Network (OSTI)

A major concern of the chlorination of aquatic humic materials is the ubiquitous production of trihalomethanes. A large number of other chlorinated organic compounds, however, have been shown to be formed by chlorine's reaction with humic substances. In this study, humic material was concentrated from a coastal North Carolina lake and chlorinated at a chlorine to carbon mole ratio of 1.5 at pH 12. A high pH was necessary for complete dissolution of the humic material and for production of adequate quantities of oxidation and chlorination products for extraction, separation and mass spectrometric identification. After concentration in ether, samples were methylated, separated with a 50-m OV-17 glass capillary column or a 25 m SP-2100 fused-silica column and identified. A Hewlett-Packard 5710A gas chromatograph interfaced to a VG Micromass 7070F double-focusing mass spectrometer was used. Low resolution, accurate mass measurements were made with a combined EI-CI source. The ability to do low resolution, accurate mass measurements made possible a rapid scan function necessary for capillary column gas chromatography. Accurate mass measurements allowed increased confidence in the identification of compounds, most of which are not available as standards. The products identified in these studies were chlorinated aliphatic straight-chain acids dominated by di- and trichloroacetic acid and the chlorinated dicarboxylic acids: succinic, fumaric and maleic acids. Chlorinated and unchlorinated aliphatic mono- and dicarboxylic acids and unchlorinated polycarboxylic aromatic acids comprise the remaining bulk of the compounds identified.

J. D. Johnson; R. F. Christman; D. L. Norwood; D. S. Millington

1982-01-01T23:59:59.000Z

444

Low severity upgrading of F-T waxes with solid superacids. Progress report, March 1, 1992--May 30, 1992  

SciTech Connect

We have previously reported the isomerization and hydrocracking of n-hexadecane and a n-C{sub 32} straight chain paraffin with a Pt/ZrO{sub 2}/SO{sub 4} catalyst at 170{degrees}C and 350 psig of hydrogen. This study has now been extended to the treatment of a Fisher-Tropsch wax with a carbon number range from C{sub 55}-C{sub 62}. The results reported in Table 1 show that the Pt/ZrO{sub 2}/SO{sub 4} catalyst is active for the isomerization and hydrocracking of this substrate. At an 88.6 wt% conversion level, an 86.1% selectivity to isoparaffins was achieved. The products consisted mainly of C{sub 4}-C{sub 9} and C{sub 10}-C{sub 14} fractions, suitable as gasoline and diesel fuels. A feed/catalyst ratio of 6:1 was used; there was no evidence of catalytic deactivation. The melted wax is viscous and there was a decrease in conversion with time, indicating that diffusion might be a limitation for chains of very high molecular weight.

Wender, I.; Tierney, J.W.

1992-07-20T23:59:59.000Z

445

Low severity upgrading of F-T waxes with solid superacids  

SciTech Connect

We have previously reported the isomerization and hydrocracking of n-hexadecane and a n-C{sub 32} straight chain paraffin with a Pt/ZrO{sub 2}/SO{sub 4} catalyst at 170{degrees}C and 350 psig of hydrogen. This study has now been extended to the treatment of a Fisher-Tropsch wax with a carbon number range from C{sub 55}-C{sub 62}. The results reported in Table 1 show that the Pt/ZrO{sub 2}/SO{sub 4} catalyst is active for the isomerization and hydrocracking of this substrate. At an 88.6 wt% conversion level, an 86.1% selectivity to isoparaffins was achieved. The products consisted mainly of C{sub 4}-C{sub 9} and C{sub 10}-C{sub 14} fractions, suitable as gasoline and diesel fuels. A feed/catalyst ratio of 6:1 was used; there was no evidence of catalytic deactivation. The melted wax is viscous and there was a decrease in conversion with time, indicating that diffusion might be a limitation for chains of very high molecular weight.

Wender, I.; Tierney, J.W.

1992-07-20T23:59:59.000Z

446

Expanding the scope of the nucleophile catalyzed aldol lactonization (NCALl) process and transformations of the resulting beta-lactones  

E-Print Network (OSTI)

Expanding the uses of the NCAL and finding the spectrum of substrates best suited for such a transformation has been the main effort of my research. Previous studies had focused on aldedydes as the requisite functionality that would provide the needed electrophilicity in order to complete the aldol; however, recent advancements have introduced ketones as a viable carbonyl. With an established protocol in hand, I set out to explore various substrates that could yield Beta-lactones in good to moderate yields such as amino acid derivatives, diones, and large cyclic formations as well as simple, straight chain acids with varying groups Alpha to the ketone. In general, I was able to establish a basic framework of substrates that are highly and/or moderately susceptible towards the NCAL and current studies continue to further expand the scope. In addition to making Beta-lactones, I investigated alkyl cuprates as soft nucleophiles to afford addition at the Beta carbon yielding a variety of acids. Substrates for cuprate additions have been expanded to bulkier and multi-cyclic Beta-lactones and applied to the synthesis of a Merck IND intermediate. Additions to bi- and tri-chloro Beta-lactones due to the presence of the resulting moity in natural products are currently being studied.

Matla, Andrea Slava

2008-05-01T23:59:59.000Z

447

Natural organic compounds as tracers for biomass combustion in aerosols  

SciTech Connect

Biomass combustion is an important primary source of carbonaceous particles in the global atmosphere. Although various molecular markers have already been proposed for this process, additional specific organic tracers need to be characterized. The injection of natural product organic tracers to smoke occurs primarily by direct volatilization/steam stripping and by thermal alteration based on combustion temperature. The degree of alteration increases as the burn temperature rises and the moisture content of the fuel decreases. Although the molecular composition of organic matter in smoke particles is highly variable, the molecular structures of the tracers are generally source specific. The homologous compound series and biomarkers present in smoke particles are derived directly from plant wax, gum and resin by volatilization and secondarily from pyrolysis of biopolymers, wax, gum and resin. The complexity of the organic components of smoke aerosol is illustrated with examples from controlled burns of temperate and tropical biomass fuels. Burning of biomass from temperate regions (i.e., conifers) yields characteristic tracers from diterpenoids as well as phenolics and other oxygenated species, which are recognizable in urban airsheds. The major organic components of smoke particles from tropical biomass are straight-chain, aliphatic and oxygenated compounds and triterpenoids. The precursor-to-product approach of organic geochemistry can be applied successfully to provide tracers for studying smoke plume chemistry and dispersion.

Simoneit, B.R.T. [Brookhaven National Lab., Upton, NY (United States)]|[Oregon State Univ., Corvallis, OR (United States). Coll. of Oceanic and Atmospheric Sciences; Abas, M.R. bin [Brookhaven National Lab., Upton, NY (United States)]|[Univ. of Malaya, Kuala Lumpur (Malaysia); Cass, G.R. [Brookhaven National Lab., Upton, NY (United States)]|[California Inst. of Tech., Pasadena, CA (United States). Environmental Engineering Science Dept.; Rogge, W.F. [Brookhaven National Lab., Upton, NY (United States)]|[Florida International Univ., University Park, FL (United States). Dept. of Civil and Environmental Engineering; Mazurek, M.A. [Brookhaven National Lab., Upton, NY (United States); Standley, L.J. [Academy of Natural Sciences, Avondale, PA (United States). Stroud Water Research Center; Hildemann, L.M. [Stanford Univ., CA (United States). Dept. of Civil Engineering

1995-08-01T23:59:59.000Z

448

Comprehensive chemical kinetic modeling of the oxidation of C8 and larger n-alkanes and 2-methylalkanes  

DOE Green Energy (OSTI)

Conventional petroleum jet and diesel fuels, as well as alternative Fischer-Tropsch (FT) fuels and hydrotreated renewable jet (HRJ) fuels, contain high molecular weight lightly branched alkanes (i.e., methylalkanes) and straight chain alkanes (n-alkanes). Improving the combustion of these fuels in practical applications requires a fundamental understanding of large hydrocarbon combustion chemistry. This research project presents a detailed and reduced chemical kinetic mechanism for singly methylated iso-alkanes (i.e., 2-methylalkanes) ranging from C{sub 8} to C{sub 20}. The mechanism also includes an updated version of our previously published C{sub 8} to C{sub 16} n-alkanes model. The complete detailed mechanism contains approximately 7,200 species 31,400 reactions. The proposed model is validated against new experimental data from a variety of fundamental combustion devices including premixed and nonpremixed flames, perfectly stirred reactors and shock tubes. This new model is used to show how the presence of a methyl branch affects important combustion properties such as laminar flame propagation, ignition, and species formation.

Sarathy, S M; Westbrook, C K; Pitz, W J; Mehl, M; Togbe, C; Dagaut, P; Wang, H; Oehlschlaeger, M; NIemann, U; Seshadri, K; Veloo, P S; Ji, C; Egolfopoulos, F; Lu, T

2011-03-16T23:59:59.000Z

449

Transportation fuels from synthetic gas  

DOE Green Energy (OSTI)

Twenty-five experimental Fischer-Tropsch synthesis runs were made with 14 different catalysts or combinations of catalysts using a Berty reactor system. Two catalysts showed increased selectivity to transportation fuels compared to typical Fischer-Tropsch catalysts. With a catalyst consisting of 5 wt % ruthenium impregnated on a Y zeolite (run number 24), 63 to 70 wt % of the hydrocarbon product was in the gasoline boiling range. Using a 0.5 wt % ruthenium on alumina catalyst (run number 22), 64 to 78 wt % of the hydrocarbon product was in the diesel fuel boiling range. Not enough sample was produced to determine the octane number of the gasoline from run number 24, but it is probably somewhat better than typical Fischer-Tropsch gasoline (approx. 50) and less than unleaded gasoline (approx. 88). The diesel fuel produced in run number 22 consisted of mostly straight chained paraffins and should be an excellent transportation fuel without further refining. The yield of transportation fuels from biomass via gasification and the Fischer-Tropsch synthesis with the ruthenium catalysts identified in the previous paragraph is somewhat less, on a Btu basis, than methanol (via gasification) and wood oil (PERC and LBL processes) yields from biomass. However, the products of the F-T synthesis are higher quality transportation fuels. The yield of transportation fuels via the F-T synthesis is similar to the yield of gasoline via methanol synthesis and the Mobil MTG process.

Baker, E.G.; Cuello, R.

1981-08-01T23:59:59.000Z

450

Assessment of the technical and economic feasibility of converting wood residues to liquid and gaseous fuel products using state-of-the-art and advanced coal conversion technology. Second quarterly report, No. DOE-8, GL-10290, September 1, 1978--November 30, 1978  

DOE Green Energy (OSTI)

The following are reviewed briefly: goal and objectives, contract task schedule, project status, second quarter activity and results, summary, and third quarter plans. The systems under analysis at the current time are summarized as follows: name, status, operating units, product form, coal feedstock size, and other feedstocks tested. (MHR)

Not Available

1979-01-01T23:59:59.000Z

451

Gas withdrawal from an in situ oil shale retort  

SciTech Connect

Liquid and gaseous products are recovered from oil shale in an in situ oil shale retort containing a fragmented permeable mass of particles containing oil shale by retorting oil shale in the fragmented mass to produce gaseous and liquid products. The liquid products are withdrawn from the retort to a first level in unfragmented formation below the elevation of the bottom boundary of the retort. Gaseous products are withdrawn from the retort to a second level below the elevation of the first level.

Mills, E.A.

1979-02-20T23:59:59.000Z

452

Method and apparatus for implementing a thermodynamic cycle with intercooling  

SciTech Connect

A method is described for implementing a thermodynamic cycle comprising the steps of: expanding a gaseous working fluid to transform its energy into usable form; cooling the expanded gaseous working fluid; expanding the cooled working fluid to a spent low pressure level to transform its energy into usable form; condensing the spent working fluid; and evaporating the condensed working fluid using heat transferred during cooling from the expanded gaseous working fluid.

Kalina, A.I.

1986-08-12T23:59:59.000Z

453

EA-1856: Conveyance of Land and Facilities at the Portsmouth...  

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

56: Conveyance of Land and Facilities at the Portsmouth Gaseous Diffusion Plant for Economic Development Purposes, Piketon, Ohio EA-1856: Conveyance of Land and Facilities at the...

454

Slide 1  

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

pressure processes Can use syngas, gaseous or other fuel to make pure oxygen, power and steam - Does not consume electric power - Produces net power and steam as desired...

455

Microsoft PowerPoint - Proceedings Cover Sheets  

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

mixture of gaseous impurities which must be removed (via amine absorption) from natural gas or oil before it can be transported - Generally no longer acceptable to discharge...

456

A look back at Union Carbides [first] 20 Years in Nuclear Energy...  

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

first 20 Years in Nuclear Energy The Gaseous Diffusion Plants Note: Union Carbide Nuclear Division, which started out as Carbide and Carbon Chemicals Company, operated the...

457

Early Stage R&D Technologies - Energy Innovation Portal  

electron transport properties of a ... Ethylene is the most produced gaseous organic compound in the chemical industry and future demand is forecasted ...

458

Paducah | Department of Energy  

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

Paducah Paducah Paducah Below are compliance agreements for the Paducah site, and summaries of the agreements are included. These agreements help in promoting cooperation between EM, Department organizations, and state agencies. Federal Facility Agreement for the Paducah Gaseous Diffusion Plant Federal Facility Agreement for the Paducah Gaseous Diffusion Plant Summary Toxic Substances Control Act Uranium Enrichment Federal Facilities Compliance Agreement, February 20, 1992 Toxic Substances Control Act Uranium Enrichment Federal Facilities Compliance Agreement, February 20, 1992 Summary Paducah Gaseous Diffusion Plant Compliance Order, September 10, 1997 Paducah Gaseous Diffusion Plant Compliance Order, September 10, 1997 Summary More Documents & Publications Closure Sites

459

U.S. Energy Information Administration (EIA)  

U.S. Energy Information Administration (EIA)

The Petroleum Code outlines the regulations for exploration, production, and transportation of liquid, as well as solid and gaseous hydrocarbons in Madagascar.

460