National Library of Energy BETA

Sample records for tower modifications changing

  1. Convection towers

    DOE Patents [OSTI]

    Prueitt, Melvin L.

    1995-01-01

    Convection towers which are capable of cleaning the pollution from large quantities of air, of generating electricity, and of producing fresh water utilize the evaporation of water sprayed into the towers to create strong airflows and to remove pollution from the air. Turbines in tunnels at the skirt section of the towers generate electricity, and condensers produce fresh water.

  2. Convection towers

    DOE Patents [OSTI]

    Prueitt, Melvin L.

    1994-01-01

    Convection towers which are capable of cleaning the pollution from large quantities of air and of generating electricity utilize the evaporation of water sprayed into the towers to create strong airflows and to remove pollution from the air. Turbines in tunnels at the skirt section of the towers generate electricity. Other embodiments may also provide fresh water, and operate in an updraft mode.

  3. Convection towers

    DOE Patents [OSTI]

    Prueitt, Melvin L.

    1996-01-01

    Convection towers which are capable of cleaning the pollution from large quantities of air, of generating electricity, and of producing fresh water utilize the evaporation of water sprayed into the towers to create strong airflows and to remove pollution from the air. Turbines in tunnels at the skirt section of the towers generate electricity, and condensers produce fresh water.

  4. Convection towers

    DOE Patents [OSTI]

    Prueitt, M.L.

    1996-01-16

    Convection towers which are capable of cleaning the pollution from large quantities of air, of generating electricity, and of producing fresh water utilize the evaporation of water sprayed into the towers to create strong airflows and to remove pollution from the air. Turbines in tunnels at the skirt section of the towers generate electricity, and condensers produce fresh water. 6 figs.

  5. Convection towers

    DOE Patents [OSTI]

    Prueitt, M.L.

    1994-02-08

    Convection towers which are capable of cleaning the pollution from large quantities of air and of generating electricity utilize the evaporation of water sprayed into the towers to create strong airflows and to remove pollution from the air. Turbines in tunnels at the skirt section of the towers generate electricity. Other embodiments may also provide fresh water, and operate in an updraft mode. 5 figures.

  6. Tower Camera Handbook

    SciTech Connect (OSTI)

    Moudry, D

    2005-01-01

    The tower camera in Barrow provides hourly images of ground surrounding the tower. These images may be used to determine fractional snow cover as winter arrives, for comparison with the albedo that can be calculated from downward-looking radiometers, as well as some indication of present weather. Similarly, during spring time, the camera images show the changes in the ground albedo as the snow melts. The tower images are saved in hourly intervals. In addition, two other cameras, the skydeck camera in Barrow and the piling camera in Atqasuk, show the current conditions at those sites.

  7. Armor Tower, Inc.

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

    Edward Rosenbloom Chief Executive Officer Armor Tower, Inc. P.O. Box 49779 Charlotte, ... an electrical shock incident involving an Armor Tower, Inc. (Armor Tower) employee at the ...

  8. Contract DE-AC02-07CH11358 Modifications Language Changes

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AC02-07CH11358 Modifications Language Changes Modification 183 October 23, 2015 Part I, Section H - Special Contract Requirements (replace Mod 171) Part II, Section I - Contract...

  9. Phase Change Material Tower

    Broader source: Energy.gov [DOE]

    This presentation was delivered at the SunShot Concentrating Solar Power (CSP) Program Review 2013, held April 23–25, 2013 near Phoenix, Arizona.

  10. Phase Change Material Tower

    Office of Environmental Management (EM)

    Peter B. Lyons About Us Dr. Peter B. Lyons - Assistant Secretary for Nuclear Energy Photo of Assistant Secretary Lyons Dr. Peter B. Lyons was confirmed as the Assistant Secretary for Nuclear Energy on April 14, 2011 after serving as the Acting Assistant Secretary since November 2010. Dr. Lyons was appointed to his previous role as Principal Deputy Assistant Secretary of the Office of Nuclear Energy (NE) in September 2009. Under Dr. Lyons' leadership, the Office has made great strides in

  11. Solar power tower

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    The solar power tower section of the Renewable Energy Technology Characterizations describes the technical and economic status of this emerging renewable energy option for electricity supply.

  12. Department of Energy (DOE) Contract Change Order Modification Template

    Broader source: Energy.gov [DOE]

    This Flash forwards a template for executing contract changes within the general scope of the contract. The template will be incorporated in a forthcoming Acquisition Guide Chapter on changes orders, but is being issued to make it available immediately. The template will be available in the STRIPES Library.

  13. Wind tower service lift

    DOE Patents [OSTI]

    Oliphant, David; Quilter, Jared; Andersen, Todd; Conroy, Thomas

    2011-09-13

    An apparatus used for maintaining a wind tower structure wherein the wind tower structure may have a plurality of legs and may be configured to support a wind turbine above the ground in a better position to interface with winds. The lift structure may be configured for carrying objects and have a guide system and drive system for mechanically communicating with a primary cable, rail or other first elongate member attached to the wind tower structure. The drive system and guide system may transmit forces that move the lift relative to the cable and thereby relative to the wind tower structure. A control interface may be included for controlling the amount and direction of the power into the guide system and drive system thereby causing the guide system and drive system to move the lift relative to said first elongate member such that said lift moves relative to said wind tower structure.

  14. China Solar Tower Development | Open Energy Information

    Open Energy Info (EERE)

    Tower Development Jump to: navigation, search Name: China Solar Tower Development Place: China Sector: Solar Product: Joint venture for development of solar towers in China,...

  15. Composite Tower Solutions | Open Energy Information

    Open Energy Info (EERE)

    needs, including meteorological towers, weather towers, and data collection and instrumentation towers. Coordinates: 40.233765, -111.668509 Show Map Loading map......

  16. Power Towers for Utilities

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Towers for Utilities - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste Management Programs Advanced

  17. Cooling Towers: Understanding Key Components of Cooling Towers...

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

    More Documents & Publications Guidelines for Estimating Unmetered Industrial Water Use Side Stream Filtration for Cooling Towers Install an Automatic Blowdown-Control

  18. How to Build a Tower

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Volunteers - Sign Up About Science Bowl Curriculum and Activities How to Build a Motor The Great Marble Drop How to Build a Turbine How to Build a Tower Classroom...

  19. Tower Temperature and Humidity Sensors (TWR) Handbook

    SciTech Connect (OSTI)

    Cook, DR

    2010-02-01

    Three tall towers are installed at the Atmospheric Radiation Measurement (ARM) Climate Research Facility: a 60-meter triangular tower at the Southern Great Plains (SGP) Central Facility (CF), a 21-meter walkup scaffolding tower at the SGP Okmulgee forest site (E21), and a 40-meter triangular tower at the North Slope of Alaska (NSA) Barrow site. The towers are used for meteorological, radiological, and other measurements.

  20. SMUD Kokhala Power Tower Study

    SciTech Connect (OSTI)

    Price, Henry W.; Whitney, Daniel D.; Beebe, H.I.

    1997-06-01

    Kokhala is the name of a new hybridized power tower design which integrates a nitrate-salt solar power tower with a gas turbine combined-cycle power plant. This integration achieves high value energy, low costs, and lower investor risk than a conventional solar only power tower plant. One of the primary advantages of this system is that it makes small power tower plants much more economically competitive with conventional power generation technologies. This paper is an overview of a study that performed a conceptual evaluation of a small (30 MWe) commercial plant suitable for the Sacramento Municipal Utility District`s (SMUD) Rancho Seco power plant site near Sacramento, California. This paper discusses the motivation for using a small hybrid solar plant and provides an overview of the analysis methodology used in the study. The results indicate that a power tower integrated with an advanced gas turbine, combined with Sacramento`s summer solar resource, could produce a low- risk, economically viable power generation project in the near future.

  1. CSP Tower Air Brayton Combustor

    Broader source: Energy.gov [DOE]

    This fact sheet describes a concentrating solar power tower air Brayton combustor project awarded under the DOE's 2012 SunShot CSP R&D award program. The team, led by the Southwest Research Institute, is working to develop an external combustor that allows for the mixing of CSP-heated air with natural gas in hybridized power plants. This project aims to increase the temperature capabilities of the CSP tower air receiver and gas turbine to 1,000ºC and achieve energy conversion efficiencies greater than 50%.

  2. Power Tower System Concentrating Solar Power Basics

    Broader source: Energy.gov [DOE]

    In power tower concentrating solar power systems, a large number of flat, sun-tracking mirrors, known as heliostats, focus sunlight onto a receiver at the top of a tall tower.

  3. Conversion Tower for Dispatchable Solar Power: High-Efficiency Solar-Electric Conversion Power Tower

    SciTech Connect (OSTI)

    2012-01-11

    HEATS Project: Abengoa Solar is developing a high-efficiency solar-electric conversion tower to enable low-cost, fully dispatchable solar energy generation. Abengoa’s conversion tower utilizes new system architecture and a two-phase thermal energy storage media with an efficient supercritical carbon dioxide (CO2) power cycle. The company is using a high-temperature heat-transfer fluid with a phase change in between its hot and cold operating temperature. The fluid serves as a heat storage material and is cheaper and more efficient than conventional heat-storage materials, like molten salt. It also allows the use of a high heat flux solar receiver, advanced high thermal energy density storage, and more efficient power cycles.

  4. Best Management Practice #10: Cooling Tower Management

    Broader source: Energy.gov [DOE]

    Cooling towers dissipate heat from recirculating water used to cool chillers, air conditioners, or other process equipment to the ambient air. Heat is rejected to the environment from cooling towers through the process of evaporation. Therefore, by design, cooling towers use significant amounts of water.

  5. Cooling Towers: Understanding Key Components of Cooling Towers and How to

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

    Improve Water Efficiency | Department of Energy Cooling Towers: Understanding Key Components of Cooling Towers and How to Improve Water Efficiency Cooling Towers: Understanding Key Components of Cooling Towers and How to Improve Water Efficiency Fact sheet covers the key components of cooling towers and how to improve water efficiency. PDF icon waterfs_coolingtowers.pdf More Documents & Publications Guidelines for Estimating Unmetered Industrial Water Use Side Stream Filtration for

  6. 2004 Savannah River Cooling Tower Collection (U)

    SciTech Connect (OSTI)

    Garrett, Alfred; Parker, Matthew J.; Villa-Aleman, E.

    2005-05-01

    The Savannah River National Laboratory (SRNL) collected ground truth in and around the Savannah River Site (SRS) F-Area cooling tower during the spring and summer of 2004. The ground truth data consisted of air temperatures and humidity inside and around the cooling tower, wind speed and direction, cooling water temperatures entering; inside adn leaving the cooling tower, cooling tower fan exhaust velocities and thermal images taken from helicopters. The F-Area cooling tower had six cells, some of which were operated with fans off during long periods of the collection. The operating status (fan on or off) for each of the six cells was derived from operations logbooks and added to the collection database. SRNL collected the F-Area cooling tower data to produce a database suitable for validation of a cooling tower model used by one of SRNL's customer agencies. SRNL considers the data to be accurate enough for use in a model validation effort. Also, the thermal images of the cooling tower decks and throats combined with the temperature measurements inside the tower provide valuable information about the appearance of cooling towers as a function of fan operating status and time of day.

  7. Vortex-augmented cooling tower - windmill combination

    DOE Patents [OSTI]

    McAllister, J.E. Jr.

    1982-09-02

    A cooling tower for cooling large quantities of effluent water from a production facility by utilizing natural wind forces includes the use of a series of helically directed air inlet passages extending outwardly from the base of the tower to introduce air from any direction in a swirling vortical pattern while the force of the draft created in the tower makes it possible to place conventional power generating windmills in the air passage to provide power as a by-product.

  8. ARM - Campaign Instrument - aerosol-tower-eml

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    (AEROSOL-TOWER-EML) Instrument Categories Aerosols Campaigns Remote Cloud Sensing (RCS) Field Evaluation Download Data Southern Great Plains, 1994.04.01 - 1994.05.31...

  9. GreenTower | Open Energy Information

    Open Energy Info (EERE)

    Sector: Solar Product: Developer of a solar chimney technology, with greenhouses for food production. Hopes to deploy this in Namibia. References: GreenTower1 This article...

  10. Wind turbine tower for storing hydrogen and energy

    DOE Patents [OSTI]

    Fingersh, Lee Jay

    2008-12-30

    A wind turbine tower assembly for storing compressed gas such as hydrogen. The tower assembly includes a wind turbine having a rotor, a generator driven by the rotor, and a nacelle housing the generator. The tower assembly includes a foundation and a tubular tower with one end mounted to the foundation and another end attached to the nacelle. The tower includes an in-tower storage configured for storing a pressurized gas and defined at least in part by inner surfaces of the tower wall. In one embodiment, the tower wall is steel and has a circular cross section. The in-tower storage may be defined by first and second end caps welded to the inner surface of the tower wall or by an end cap near the top of the tower and by a sealing element attached to the tower wall adjacent the foundation, with the sealing element abutting the foundation.

  11. Tower Water-Vapor Mixing Ratio

    SciTech Connect (OSTI)

    Guastad, Krista; Riihimaki, Laura; none,

    2013-04-01

    The purpose of the Tower Water-Vapor Mixing Ratio (TWRMR) value-added product (VAP) is to calculate water-vapor mixing ratio at the 25-meter and 60-meter levels of the meteorological tower at the Southern Great Plains (SGP) Central Facility.

  12. Cooling tower environmental considerations for cogeneration projects

    SciTech Connect (OSTI)

    Weaver, K.L.; Putnam, R.A.; Schott, G.A.

    1994-12-31

    Careful consideration must be given to the potential environmental impacts resulting from cooling tower operations in cogeneration projects. Concerns include visible plumes, fogging and icing of nearby roadways, emissions, water use, aesthetics, and noise. These issues must be properly addressed in order to gain public acceptance and allow for easier permitting of the facility. This paper discusses the various evaporative type cooling tower technologies from an environmental standpoint. In addition, typical concerns and questions raised by the public are presented, along with suggested guidelines for addressing these concerns. The use of modeling to predict the potential environmental impacts from cooling tower operations is sometimes required by regulatory agencies as a condition for obtaining approval for the facility. This paper discusses two of the models that are currently available for predicting cooling tower environmental impacts such as fogging, icing, salt deposition, and visible plumes. The lack of standardized models for cooling tower noise predictions, and the means by which the modeling requirements may be achieved are also addressed. An overview of the characteristics of cooling tower noise, the various measures used for noise control and the interdependency of the control measures and other cooling tower performance parameters are presented. Guidance is provided to design cost effective, low noise installations. The requirements for cooling tower impact assessments to support permitting of a cogeneration facility are also presented.

  13. Tower Temperature and Humidity Sensors (TWR) Handbook (Technical Report) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Tower Temperature and Humidity Sensors (TWR) Handbook Citation Details In-Document Search Title: Tower Temperature and Humidity Sensors (TWR) Handbook Three tall towers are installed at the Atmospheric Radiation Measurement (ARM) Climate Research Facility: a 60-meter triangular tower at the Southern Great Plains (SGP) Central Facility (CF), a 21-meter walkup scaffolding tower at the SGP Okmulgee forest site (E21), and a 40-meter triangular tower at the North Slope of Alaska

  14. Best Management Practice #10: Cooling Tower Management | Department of

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

    Energy 0: Cooling Tower Management Best Management Practice #10: Cooling Tower Management Cooling towers dissipate heat from recirculating water used to cool chillers, air conditioners, or other process equipment to the ambient air. Heat is rejected to the environment from cooling towers through the process of evaporation. Therefore, by design, cooling towers use significant amounts of water. Overview The thermal efficiency and longevity of the cooling tower and equipment depend on the

  15. Technical Evaluation of Side Stream Filtration for Cooling Towers...

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

    Technical Evaluation of Side Stream Filtration for Cooling Towers Technical Evaluation of Side Stream Filtration for Cooling Towers Fact sheet provides an overview of side stream ...

  16. Enforcement Letter, Armor Tower, Inc. | Department of Energy

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

    Letter (WEL-2015-06) to Armor Tower, Inc., relating to a worker electrical shock that occurred while working on a meteorological tower at DOE's Brookhaven National Laboratory. ...

  17. Project Profile: Solar Power Tower Improvements with the Potential...

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

    Solar Power Tower Improvements with the Potential to Reduce Costs Project Profile: Solar Power Tower Improvements with the Potential to Reduce Costs Pratt Whitney Rocketdyne logo ...

  18. Hydrogen Storage in Wind Turbine Towers: Cost Analysis and Conceptual...

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

    in Wind Turbine Towers: Cost Analysis and Conceptual Design Hydrogen Storage in Wind Turbine Towers: Cost Analysis and Conceptual Design Preprint PDF icon 34851.pdf More Documents ...

  19. Assessment of Parabolic Trough and Power Tower Solar Technology...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of Parabolic Trough and Power Tower Solar Technology Cost and Performance Forecasts ... of Parabolic Trough and Power Tower Solar Technology Cost and Performance Forecasts ...

  20. Executive Summary: Assessment of Parabolic Trough and Power Tower...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of Parabolic Trough and Power Tower Solar Technology Cost and Performance Forecasts ... of Parabolic Trough and Power Tower Solar Technology Cost and Performance Forecasts ...

  1. Use of nanofiltration to reduce cooling tower water consumption...

    Office of Scientific and Technical Information (OSTI)

    Use of nanofiltration to reduce cooling tower water consumption. Citation Details In-Document Search Title: Use of nanofiltration to reduce cooling tower water consumption. ...

  2. Coagulation chemistries for silica removal from cooling tower...

    Office of Scientific and Technical Information (OSTI)

    Coagulation chemistries for silica removal from cooling tower water. Citation Details In-Document Search Title: Coagulation chemistries for silica removal from cooling tower water. ...

  3. Coagulation chemistries for silica removal from cooling tower...

    Office of Scientific and Technical Information (OSTI)

    removal from cooling tower water. Citation Details In-Document Search Title: Coagulation chemistries for silica removal from cooling tower water. You are accessing a ...

  4. Cooling tower water treatment and reuse. (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Cooling tower water treatment and reuse. Citation Details In-Document Search Title: Cooling tower water treatment and reuse. No abstract prepared. Authors: Brady, Patrick Vane ; ...

  5. Flue gas injection control of silica in cooling towers. (Technical...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Flue gas injection control of silica in cooling towers. Citation Details In-Document Search Title: Flue gas injection control of silica in cooling towers. ...

  6. Modification of pK values caused by change in H-bond geometry

    SciTech Connect (OSTI)

    Scheiner, S.; Hillenbrand, E.A.

    1985-05-01

    The competition between various groups for a proton is studied by ab initio molecular orbital methods. It is found that reorientations of the two groups involved in a H-bond can reverse the equilibrium position of the proton shared between them. Specifically, the carbonyl and hydroxyl groups were modeled by H/sub 2/CO and HOH. In the H-bond between these two groups, association of the proton with the carbonyl is favored over the hydroxyl when the latter group is situated along a lone pair of the carbonyl oxygen. However, displacement of the water to the carbon-oxygen axis between the two carbonyl lone pairs reverses the situation and the hydroxyl is more stable. A similar reversal of stability is observed in the H-bond involving a Schiff base (modeled by CH/sub 2/NH) and amine (NH/sub 3/). These shifts in stability correspond to reversal of relative pK of the groups involved. A fundamental principle emerging from the calculations is that ion-dipole electrostatic interactions favor transfer of a proton to the group that is positioned as closely as possible to the negative end of the dipole moment vector of the other. The ideas developed here suggest a number of means by which conformational changes may be utilized to shift protons from residue to residue within a protein molecule such as an enzyme or bacteriorhodopsin.

  7. Cooling Tower Report, October 2008 | Department of Energy

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

    Cooling Tower Report, October 2008 Cooling Tower Report, October 2008 Electricity Reliability Impacts of a Mandatory Cooling Tower Rule for Existing Steam Generation Units PDF icon Cooling Tower Report, October 2008 More Documents & Publications 2011: Air Quality Regulations Report 2011 Air Quality Regulations Report Cooling Water Issues and Opportunities at U.S. Nuclear Power Plants, December 2010

  8. Microsoft Word - Cooling Tower Report.doc

    Energy Savers [EERE]

    Electricity Reliability Impacts of a Mandatory Cooling Tower Rule for Existing Steam Generation Units U.S. Department of Energy Office of Electricity Delivery and Energy Reliability October 2008 ii iii TABLE OF CONTENTS EXECUTIVE SUMMARY ........................................................................................................................... i

  9. Side Stream Filtration for Cooling Towers

    Broader source: Energy.gov [DOE]

    Report assesses side stream filtration options for cooling towers with an objective to assess key attributes that optimize energy and water savings and provide information about specific technology and implementation options.

  10. American Tower Company | Open Energy Information

    Open Energy Info (EERE)

    Company Jump to: navigation, search Name: American Tower Company Address: P.O. Box 29 Place: Shelby, Ohio Zip: 44875 Sector: Wind energy Product: Agriculture;Business and legal...

  11. Project Profile: Brayton Cycle Baseload Power Tower

    Broader source: Energy.gov [DOE]

    Wilson Solarpower, under the Baseload CSP FOA, is validating a proposed utility-scale, Brayton cycle baseload power tower system with a capacity factor of at least 75% and LCOE of $0.09/kWh.

  12. Seismic response of offshore guyed towers

    SciTech Connect (OSTI)

    Jain, A.K.; Bisht, R.S.

    1993-12-31

    Seismic stresses in the offshore Guyed Tower assumes importance because of its flexural modes having smaller periods (in the range of 1 to 3 sec), which may attract considerable seismic forces. Since the displacement of the offshore Guyed Tower is generally guided by the rigid body mode corresponding to the fundamental period which lies between 20 to 40 sec., seismic excitation is relatively unimportant in relation to the towers` overall displacement behavior. The response of offshore Guyed Tower to ransom ground motion (E1 Centro earthquake, 1940) is investigated. The guyed tower is modeled as a uniform shear beam with a rotational spring at the base of the tower. The guylines are represented by a linearized spring whose force-excursion relationship is derived from a separate static analysis of the guylines. The dynamic equation of motion duly takes into account the pressure-drag effect produced due to fluid-structure interaction. The response is obtained in tim- domain using Newmark`s {beta} Time Integration Scheme.

  13. Visionary Solutions Contract Modifications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Visionary Soultions LLC Contract DE-EM0001840 Modifications Modification 001 Modification 0001 DE-DT0004203 Modification 0001 DE-DT0007810 Modification 0001 DE-DT0005972 Modification 002 Modification 0003 Modification 0004 Modification 0006

  14. ARM: Three Meter Tower: video camera (Dataset) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ARM: Three Meter Tower: video camera Citation Details In-Document Search Title: ARM: Three Meter Tower: video camera Three Meter Tower: video camera Authors: Scott Smith ; Martin...

  15. ARM: Three Meter Tower: video camera (Dataset) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Three Meter Tower: video camera Citation Details In-Document Search Title: ARM: Three Meter Tower: video camera Three Meter Tower: video camera Authors: Scott Smith ; Martin...

  16. ARM: Forty Meter Tower: video camera (Dataset) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Forty Meter Tower: video camera Citation Details In-Document Search Title: ARM: Forty Meter Tower: video camera Forty Meter Tower: video camera Authors: Scott Smith ; Martin...

  17. Fill fouling experiences on both mechanical and natural draft towers

    SciTech Connect (OSTI)

    Fraze, R.O. )

    1992-01-01

    Fouling of the film fill in cooling towers is becoming an increasingly serious problem in the Utility Industry. This paper discusses Florida Power Corporation's experience with fouling of film type fill in two mechanical draft and two natural draft towers. The two mechanical draft towers were placed in service as helper towers at the Anclote Plant in 1981. The two natural draft towers went into service at the Crystal River North Site in 1982 and 1984 for closed cycle cooling. All the towers are on salt water systems.

  18. Lifting system and apparatus for constructing wind turbine towers

    DOE Patents [OSTI]

    Livingston, Tracy; Schrader, Terry; Goldhardt, James; Lott, James

    2011-02-01

    The disclosed invention is utilized for mounting a wind turbine and blade assembly on the upper end of a wind turbine tower. The invention generally includes a frame or truss that is pivotally secured to the top bay assembly of the tower. A transverse beam is connected to the frame or truss and extends fore of the tower when the frame or truss is in a first position and generally above the tower when in a second position. When in the first position, a wind turbine or blade assembly can be hoisted to the top of the tower. The wind turbine or blade assembly is then moved into position for mounting to the tower as the frame or truss is pivoted to a second position. When the turbine and blade assembly are secured to the tower, the frame or truss is disconnected from the tower and lowered to the ground.

  19. Utility-Scale Power Tower Solar Systems: Performance Acceptance...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Utility-Scale Power Tower Solar Systems: Performance Acceptance Test Guidelines David ... DE-AC36-08GO28308 Utility-Scale Power Tower Solar Systems: Performance Acceptance Test ...

  20. Flue gas injection control of silica in cooling towers. (Technical...

    Office of Scientific and Technical Information (OSTI)

    Flue gas injection control of silica in cooling towers. Citation Details In-Document Search Title: Flue gas injection control of silica in cooling towers. You are accessing a ...

  1. New North Dakota Factory to Produce Wind Towers, Jobs

    Broader source: Energy.gov [DOE]

    Wind tower factory could bring back some of the jobs lost when a machine manufacturing plant closed.

  2. Boise Air Traffic Control Tower: High Performance and sustainable Building Guiding Principles Technical Assistance

    SciTech Connect (OSTI)

    Fowler, Kimberly M.; Goel, Supriya; Henderson, Jordan W.

    2013-09-01

    Overview of energy efficiency opportunities for new FAA tower construction using the Boise Air Traffic Control Tower as an example.

  3. Portage Contract Modifications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Portage, Inc. Contract DE-DT0001674 Modifications Portage Modification 001 Portage Modification 002 Portage Modification 003 Portage Modification 004 Portage Modification 005 Portage Modification 006 Portage Modification 007 Portage Modification 008 Portage Modification 065 Portage Modification 066 Portage Modification 067

  4. Concentrating Solar Power Tower System Basics | Department of Energy

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

    Tower System Basics Concentrating Solar Power Tower System Basics August 20, 2013 - 5:06pm Addthis In power tower concentrating solar power systems, numerous large, flat, sun-tracking mirrors, known as heliostats, focus sunlight onto a receiver at the top of a tall tower. A heat-transfer fluid heated in the receiver is used to generate steam, which, in turn, is used in a conventional turbine generator to produce electricity. Some power towers use water/steam as the heat-transfer fluid. Other

  5. Side Stream Filtration for Cooling Towers

    SciTech Connect (OSTI)

    2012-10-20

    This technology evaluation assesses side stream filtration options for cooling towers, with an objective to assess key attributes that optimize energy and water savings along with providing information on specific technology and implementation options. This information can be used to assist Federal sites to determine which options may be most appropriate for their applications. This evaluation provides an overview of the characterization of side stream filtration technology, describes typical applications, and details specific types of filtration technology.

  6. Wet/dry cooling tower and method

    DOE Patents [OSTI]

    Glicksman, Leon R.; Rohsenow, Warren R.

    1981-01-01

    A wet/dry cooling tower wherein a liquid to-be-cooled is flowed along channels of a corrugated open surface or the like, which surface is swept by cooling air. The amount of the surface covered by the liquid is kept small compared to the dry part thereof so that said dry part acts as a fin for the wet part for heat dissipation.

  7. Nuclear Waste Partnership Contract Modifications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Waste Partnership Contract DE-EM0001971 Modifications NWP Modification Index Description Modification 001 Modification 002 Modification 003 Modification 004 Modification 005...

  8. Vortex-augmented cooling tower-windmill combination

    DOE Patents [OSTI]

    McAllister, Jr., John E.

    1985-01-01

    A cooling tower for cooling large quantities of effluent water from a production facility by utilizing natural wind forces includes the use of a series of helically directed air inlet passages extending outwardly from the base of the tower to introduce air from any direction in a swirling vortical pattern while the force of the draft created in the tower makes it possible to place conventional power generating windmills in the air passages to provide power as a by-product.

  9. Water-Efficient Technology Opportunity: Advanced Cooling Tower Controls |

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

    Department of Energy Advanced Cooling Tower Controls Water-Efficient Technology Opportunity: Advanced Cooling Tower Controls The Federal Energy Management Program (FEMP) identified advanced cooling tower controls as a water-saving technology that is relevant to the federal sector, is commercially available, and offers significant water-savings potential. This overview provides agencies with key information to deploy innovative products and systems that may otherwise be overlooked. It also

  10. Integrated Layout and Optimization Tool for Solar Power Towers |

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Concentrating Solar Power | NREL Integrated Layout and Optimization Tool for Solar Power Towers The Solar Power Tower Integrated Layout and Optimization Tool (SolarPILOT(tm)) generates and characterizes power tower (central receiver) systems. This software was developed by the National Renewable Energy Laboratory (NREL). SolarPILOT consists of a graphical user interface (GUI) and an application programming interface (API) through which external programs can access SolarPILOT's functionality.

  11. Technical Evaluation of Side Stream Filtration for Cooling Towers

    SciTech Connect (OSTI)

    2012-10-01

    Cooling towers are an integral component of many refrigeration systems, providing comfort or process cooling across a broad range of applications. Cooling towers represent the point in a cooling system where heat is dissipated to the atmosphere through evaporation. Cooling towers are commonly used in industrial applications and in large commercial buildings to release waste heat extracted from a process or building system through evaporation of water.

  12. The Damaging Effects of Earthquake Excitation on Concrete Cooling Towers

    SciTech Connect (OSTI)

    Abedi-Nik, Farhad; Sabouri-Ghomi, Saeid

    2008-07-08

    Reinforced concrete cooling towers of hyperbolic shell configuration find widespread application in utilities engaged in the production of electric power. In design of critical civil infrastructure of this type, it is imperative to consider all the possible loading conditions that the cooling tower may experience, an important loading condition in many countries is that of the earthquake excitation, whose influence on the integrity and stability of cooling towers is profound. Previous researches have shown that the columns supporting a cooling tower are sensitive to earthquake forces, as they are heavily loaded elements that do not possess high ductility, and understanding the behavior of columns under earthquake excitation is vital in structural design because they provide the load path for the self weight of the tower shell. This paper presents the results of a finite element investigation of a representative 'dry' cooling tower, using realistic horizontal and vertical acceleration data obtained from the recent and widely-reported Tabas, Naghan and Bam earthquakes in Iran. The results of both linear and nonlinear analyses are reported in the paper, the locations of plastic hinges within the supporting columns are identified and the ramifications of the plastic hinges on the stability of the cooling tower are assessed. It is concluded that for the (typical) cooling tower configuration analyzed, the columns that are instrumental in providing a load path are influenced greatly by earthquake loading, and for the earthquake data used in this study the representative cooling tower would be rendered unstable and would collapse under the earthquake forces considered.

  13. Don Ana Sun Tower Solar Power Plant | Open Energy Information

    Open Energy Info (EERE)

    Don Ana Sun Tower Sector Solar Facility Type Concentrating Solar Power Developer NRG EnergyeSolar Location Dona Ana County, New Mexico Coordinates 32.485767,...

  14. Oak Ridge's EM Program Demolishes North America's Tallest Water Tower |

    Energy Savers [EERE]

    Department of Energy EM Program Demolishes North America's Tallest Water Tower Oak Ridge's EM Program Demolishes North America's Tallest Water Tower August 27, 2013 - 12:00pm Addthis Oak Ridge’s K-1206 F Fire Water Tower falls into an empty field during a recent demolition project. Oak Ridge's K-1206 F Fire Water Tower falls into an empty field during a recent demolition project. OAK RIDGE, Tenn. - Oak Ridge's EM program recently demolished one of the most iconic structures at the East

  15. NASA's Solar Tower Test of the 1-Meter Aeroshell

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    NASA's Solar Tower Test of the 1-Meter Aeroshell - Sandia Energy Energy Search Icon Sandia ... Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power ...

  16. Building a Better Transmission Tower | Department of Energy

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

    Better Transmission Tower Building a Better Transmission Tower May 20, 2011 - 9:41am Addthis A helicopter hoists platforms for linemen during the construction of this single-circuit 500-kilovolt tower – one of hundreds on the McNary-John Day line saving BPA big bucks. | Photo courtesy of Bonneville Power Administration A helicopter hoists platforms for linemen during the construction of this single-circuit 500-kilovolt tower - one of hundreds on the McNary-John Day line saving BPA big

  17. Meteorological Towers Display for Windows NT

    Energy Science and Technology Software Center (OSTI)

    1999-05-20

    The Towers Display Program provides a convenient means of graphically depicting current wind speed and direction from a network of meteorological monitoring stations. The program was designed primarily for emergency response applications and, therefore, plots observed wind directions as a transport direction, i.e., the direction toward which the wind would transport a release of an atmospheric contaminant. Tabular summaries of wind speed and direction as well as temperature, relative humidity, and atmospheric turbulence measured atmore » each monitoring station can be displayed. The current implementation of the product at SRS displays data from eight Weather INformation and Display (WIND) System meteorological towers at SRS, meteorological stations established jointly by SRS/WSRC and the Augusta/Richmond County Emergency Management Agency in Augusta, GA, and National Weather Service stations in Augusta, GA. Wind speed and direction are plotted in a Beaufort scale format at the location of the station on a geographic map of the area. A GUI provides for easy specification of a desired date and time for the data to be displayed.« less

  18. Tower Water-Vapor Mixing Ratio (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Tower Water-Vapor Mixing Ratio Citation Details In-Document Search Title: Tower Water-Vapor Mixing Ratio The purpose of the Tower Water-Vapor Mixing Ratio (TWRMR) value-added ...

  19. Optimizing the CSP Tower Air Brayton Cycle System to Meet the...

    Broader source: Energy.gov (indexed) [DOE]

    More Documents & Publications Final Report - Optimizing the CSP Tower Air Brayton Cycle System to Meet the SunShot Objectives CSP Tower Air Brayton Combustor - FY12 Q4 CSP Tower ...

  20. Purification of water from cooling towers and other heat exchange systems

    DOE Patents [OSTI]

    Sullivan; Enid J. , Carlson; Bryan J. , Wingo; Robert M. , Robison; Thomas W.

    2012-08-07

    The amount of silica in cooling tower water is reduced by passing cooling tower water through a column of silica gel.

  1. Property:CoolingTowerWaterUseSummerGross | Open Energy Information

    Open Energy Info (EERE)

    Property Name CoolingTowerWaterUseSummerGross Property Type Number Description Cooling Tower Water use (summer average) (afday) Gross. Retrieved from "http:en.openei.orgw...

  2. Property:CoolingTowerWaterUseAnnlAvgConsumed | Open Energy Information

    Open Energy Info (EERE)

    Property Name CoolingTowerWaterUseAnnlAvgConsumed Property Type Number Description Cooling Tower Water use (annual average) (afday) Consumed. Retrieved from "http:...

  3. Property:CoolingTowerWaterUseSummerConsumed | Open Energy Information

    Open Energy Info (EERE)

    Property Name CoolingTowerWaterUseSummerConsumed Property Type Number Description Cooling Tower Water use (summer average) (afday) Consumed. Retrieved from "http:...

  4. Property:CoolingTowerWaterUseWinterConsumed | Open Energy Information

    Open Energy Info (EERE)

    gTowerWaterUseWinterConsumed Property Type Number Description Cooling Tower Water use (winter average) (afday) Consumed. Retrieved from "http:en.openei.orgw...

  5. Tower reactors for bioconversion of lignocellulosic material

    DOE Patents [OSTI]

    Nguyen, Quang A.

    1998-01-01

    An apparatus for enzymatic hydrolysis and fermentation of pretreated lignocellulosic material, in the form of a tower bioreactor, having mixers to achieve intermittent mixing of the material. Precise mixing of the material is important for effective heat and mass transfer requirements without damaging or denaturing the enzymes or fermenting microorganisms. The pretreated material, generally in the form of a slurry, is pumped through the bioreactor, either upwards of downwards, and is mixed periodically as it passes through the mixing zones where the mixers are located. For a thin slurry, alternate mixing can be achieved by a pumping loop which also serves as a heat transfer device. Additional heat transfer takes place through the reactor heat transfer jackets.

  6. Tower reactors for bioconversion of lignocellulosic material

    DOE Patents [OSTI]

    Nguyen, Quang A.

    1999-01-01

    An apparatus for enzymatic hydrolysis and fermentation of pretreated lignocellulosic material, in the form of a tower bioreactor, having mixers to achieve intermittent mixing of the material. Precise mixing of the material is important for effective heat and mass transfer requirements without damaging or denaturing the enzymes or fermenting microorganisms. The pretreated material, generally in the form of a slurry, is pumped through the bioreactor, either upwards or downwards, and is mixed periodically as it passes through the mixing zones where the mixers are located. For a thin slurry, alternate mixing can be achieved by a pumping loop which also serves as a heat transfer device. Additional heat transfer takes place through the reactor heat transfer jackets.

  7. Tower reactors for bioconversion of lignocellulosic material

    DOE Patents [OSTI]

    Nguyen, Q.A.

    1998-03-31

    An apparatus is disclosed for enzymatic hydrolysis and fermentation of pretreated lignocellulosic material. The apparatus consists of a tower bioreactor which has mixers to achieve intermittent mixing of the material. Precise mixing of the material is important for effective heat and mass transfer requirements without damaging or denaturing the enzymes or fermenting microorganisms. The pretreated material, generally in the form of a slurry, is pumped through the bioreactor, either upwards or downwards, and is mixed periodically as it passes through the mixing zones where the mixers are located. For a thin slurry, alternate mixing can be achieved by a pumping loop which also serves as a heat transfer device. Additional heat transfer takes place through the reactor heat transfer jackets. 5 figs.

  8. Tower reactors for bioconversion of lignocellulosic material

    DOE Patents [OSTI]

    Nguyen, Q.A.

    1999-03-30

    An apparatus is described for enzymatic hydrolysis and fermentation of pretreated lignocellulosic material, in the form of a tower bioreactor, having mixers to achieve intermittent mixing of the material. Precise mixing of the material is important for effective heat and mass transfer requirements without damaging or denaturing the enzymes or fermenting microorganisms. The pretreated material, generally in the form of a slurry, is pumped through the bioreactor, either upwards or downwards, and is mixed periodically as it passes through the mixing zones where the mixers are located. For a thin slurry, alternate mixing can be achieved by a pumping loop which also serves as a heat transfer device. Additional heat transfer takes place through the reactor heat transfer jackets. 5 figs.

  9. Power Tower Technology Roadmap and cost reduction plan.

    SciTech Connect (OSTI)

    Mancini, Thomas R.; Gary, Jesse A.; Kolb, Gregory J.; Ho, Clifford Kuofei

    2011-04-01

    Concentrating solar power (CSP) technologies continue to mature and are being deployed worldwide. Power towers will likely play an essential role in the future development of CSP due to their potential to provide dispatchable solar electricity at a low cost. This Power Tower Technology Roadmap has been developed by the U.S. Department of Energy (DOE) to describe the current technology, the improvement opportunities that exist for the technology, and the specific activities needed to reach the DOE programmatic target of providing competitively-priced electricity in the intermediate and baseload power markets by 2020. As a first step in developing this roadmap, a Power Tower Roadmap Workshop that included the tower industry, national laboratories, and DOE was held in March 2010. A number of technology improvement opportunities (TIOs) were identified at this workshop and separated into four categories associated with power tower subsystems: solar collector field, solar receiver, thermal energy storage, and power block/balance of plant. In this roadmap, the TIOs associated with power tower technologies are identified along with their respective impacts on the cost of delivered electricity. In addition, development timelines and estimated budgets to achieve cost reduction goals are presented. The roadmap does not present a single path for achieving these goals, but rather provides a process for evaluating a set of options from which DOE and industry can select to accelerate power tower R&D, cost reductions, and commercial deployment.

  10. DOE - NNSA/NFO -- News & Views Bren Tower

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    At 1,527 Feet, BREN Tower Dominates Nevada National Security Site Skyline Photo - 1,527-foot BREN Tower The BREN Tower 1,527 feet tall, has been a focal point of attention ever since it was erected on the Nevada National Security Site in 1962. During its 30 years, it has been part of the Yucca and Jackass Flat skylines, and a platform for two important experiments --Bare Reactor Experiment, Nevada (BREN), and the High Energy Neutron Reactions Experiment (HENRE). It was built by the Dresser-Ideco

  11. Use of nanofiltration to reduce cooling tower water usage.

    SciTech Connect (OSTI)

    Sanchez, Andres L.; Everett, Randy L.; Jensen, Richard Pearson; Cappelle, Malynda A.; Altman, Susan Jeanne

    2010-09-01

    Nanofiltration (NF) can effectively treat cooling-tower water to reduce water consumption and maximize water usage efficiency of thermoelectric power plants. A pilot is being run to verify theoretical calculations. A side stream of water from a 900 gpm cooling tower is being treated by NF with the permeate returning to the cooling tower and the concentrate being discharged. The membrane efficiency is as high as over 50%. Salt rejection ranges from 77-97% with higher rejection for divalent ions. The pilot has demonstrated a reduction of makeup water of almost 20% and a reduction of discharge of over 50%.

  12. WIPP Hazardous Waste Permit - Incorporated Class 1 Modifications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Modifications Submitted for Incorporation into the Permit Class 1 Permit Modification - Change in Department of Energy, Carlsbad Field Office Manager, October 12, 2010 Class 1 Permit Modification - Revise Panel Figures to Include Panel 6, October 14, 2010

  13. Microsoft Word - PowerTower_work_2009.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    R&D to support the development of electricity- generating power towers had been suspended by DOE for ... the construction of the Solar One steam receiver and Solar Two salt receiver. ...

  14. Ewiiaapaayp Band of Kumeyaay Indians - Wind Meteorological Tower...

    Energy Savers [EERE]

    * The extreme and frequent icing experienced at the site during the winter. * Such icing may prove to be a significant productivity loss to any array. * NRG 50m HD towers. ...

  15. CDX 4608, Guard Tower Power and Fiber Reroute (4608)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Guard Tower Power and Fiber Reroute (4608) Y-12 Site Office Oak Ridge, Anderson County, Tennessee The proposed action is to design and re-route power and fiber to 9949-AR (Guard...

  16. Alpine SunTower Solar Power Plant | Open Energy Information

    Open Energy Info (EERE)

    www.renewableenergyfocus.comview2513pge-and-nrg-energy-collaborate-on-92-mw-solar-thermal-power Retrieved from "http:en.openei.orgwindex.php?titleAlpineSunTowerSola...

  17. Upcoming Funding Opportunity for Tower Manufacturing and Installation...

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

    Scaling to taller towers allows wind turbines to capture less turbulent and often stronger wind resources, thereby increasing the amount of U.S. land area that can cost-effectively ...

  18. Flow Distortion Study Completed for the Chesapeake Light Tower...

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

    With the light tower similar in profile to offshore oil platforms, one concern was whether its bulky cross section would disturb the wind blowing around it so that measurements on ...

  19. Wind Turbine Tower for Storing Hydrogen and Energy - Energy Innovation...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Wind Energy Wind Energy Hydrogen and Fuel Cell Hydrogen and Fuel Cell Energy Storage Energy Storage Find More Like This Return to Search Wind Turbine Tower for Storing Hydrogen and ...

  20. The 200 ft. Solar Tower at Sandia National

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    200 ft. Solar Tower at Sandia National Laboratories provides 218 computer-controlled heliostats to reflect concentrated solar energy onto the tower, producing a total thermal capacity of 6 MW and peak flux to 300 W/cm 2 . The NSTTF offers a complete testing environment for a variety of activities, including: * Thermal flash simulation * Thermal performance testing and thermophysical properties measurement * Space technology systems testing * Solar array and solar applications testing *

  1. Environmental Impacts from the Operation of Cooling Towers at SRP

    SciTech Connect (OSTI)

    Smith, F.G. III

    2001-06-26

    An assessment has been made of the environmental effects that would occur from the operation of cooling towers at the SRP reactors. A more realistic numerical model of the cooling tower plume has been used to reassess the environmental impacts. The following effects were considered: (1) the occurrence of fog and ice and their impact on nearby structures, (2) drift and salt deposition from the plume, (3) the length and height of the visible plume, and (4) the possible dose from tritium.

  2. The Tower Shielding Facility: Its glorious past

    SciTech Connect (OSTI)

    Muckenthaler, F.J.

    1997-05-07

    The Tower Shielding Facility (TSF) is the only reactor facility in the US that was designed and built for radiation-shielding studies in which both the reactor source and shield samples could be raised into the air to allow measurements to be made without interference from ground scattering or other spurious effects. The TSF proved its usefulness as many different programs were successfully completed. It became active in work for the Defense Atomic Support Agency (DASA) Space Nuclear Auxiliary Power, Defense Nuclear Agency, Liquid Metal Fast Breeder Reactor Program, the Gas-Cooled and High-Temperature Gas-Cooled Reactor programs, and the Japanese-American Shielding Program of Experimental Research, just to mention a few of the more extensive ones. The history of the TSF as presented in this report describes the various experiments that were performed using the different reactors. The experiments are categorized as to the programs which they supported and placed in corresponding chapters. The experiments are described in modest detail, along with their purpose when appropriate. Discussion of the results is minimal, but references are given to more extensive topical reports.

  3. Molten Salt Power Tower Cost Model for the System Advisor Model (SAM)

    SciTech Connect (OSTI)

    Turchi, C. S.; Heath, G. A.

    2013-02-01

    This report describes a component-based cost model developed for molten-salt power tower solar power plants. The cost model was developed by the National Renewable Energy Laboratory (NREL), using data from several prior studies, including a contracted analysis from WorleyParsons Group, which is included herein as an Appendix. The WorleyParsons' analysis also estimated material composition and mass for the plant to facilitate a life cycle analysis of the molten salt power tower technology. Details of the life cycle assessment have been published elsewhere. The cost model provides a reference plant that interfaces with NREL's System Advisor Model or SAM. The reference plant assumes a nominal 100-MWe (net) power tower running with a nitrate salt heat transfer fluid (HTF). Thermal energy storage is provided by direct storage of the HTF in a two-tank system. The design assumes dry-cooling. The model includes a spreadsheet that interfaces with SAM via the Excel Exchange option in SAM. The spreadsheet allows users to estimate the costs of different-size plants and to take into account changes in commodity prices. This report and the accompanying Excel spreadsheet can be downloaded at https://sam.nrel.gov/cost.

  4. AmeriFlux US-Ho1 Howland Forest (main tower)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Hollinger, David [USDA Forest Service; Hollinger, David [USDA Forest Service

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-Ho1 Howland Forest (main tower). Site Description - Closed conifer forest, minimal disturbance. References: Fernandez et al. (1993), Canadian Journal of Soil Science 73 317-328. Hollinger et al. (1999), Global Change Biology 5: 891-902. Savage KE, Davidson EA (2001), Global Biogeochemical Cycles 15 337-350. Scott et al. (2004), Environmental Management, Vol. 33, Supplement 1, pp. S9-S22. Hollinger et al. (2004), Global Change Biology 10: 1689-1706.

  5. AmeriFlux US-Ho2 Howland Forest (west tower)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Hollinger, David [USDA Forest Service; Hollinger, David [USDA Forest Service

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-Ho2 Howland Forest (west tower). Site Description - Closed conifer forest, minimal disturbance. References: Fernandez et al. (1993), Canadian Journal of Soil Science 73 317-328. Hollinger et al. (1999), Global Change Biology 5: 891-902. Savage KE, Davidson EA (2001), Global Biogeochemical Cycles 15 337-350. Scott et al. (2004), Environmental Management, Vol. 33, Supplement 1, pp. S9-S22. Hollinger et al. (2004), Global Change Biology 10: 1689-1706.

  6. Penser Contract Modifications (EM0003383) - Hanford Site

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract Modifications (EM0003383) DOE-RL Contracts/Procurements RL Contracts & Procurements Home Prime Contracts Current Solicitations Other Sources DOE RL Contracting Officers DOE RL Contracting Officer Representatives Penser Contract Modifications (EM0003383) Email Email Page | Print Print Page |Text Increase Font Size Decrease Font Size Listing of all contract modifications 014 This is an administrative action modification to change the Contracting Officer from Linda Jarnagin to Marcy

  7. Utility-Scale Power Tower Solar Systems: Performance Acceptance Test Guidelines

    SciTech Connect (OSTI)

    Kearney, D.

    2013-03-01

    The purpose of these Guidelines is to provide direction for conducting performance acceptance testing for large power tower solar systems that can yield results of a high level of accuracy consistent with good engineering knowledge and practice. The recommendations have been developed under a National Renewable Energy Laboratory (NREL) subcontract and reviewed by stakeholders representing concerned organizations and interests throughout the concentrating solar power (CSP) community. An earlier NREL report provided similar guidelines for parabolic trough systems. These Guidelines recommend certain methods, instrumentation, equipment operating requirements, and calculation methods. When tests are run in accordance with these Guidelines, we expect that the test results will yield a valid indication of the actual performance of the tested equipment. But these are only recommendations--to be carefully considered by the contractual parties involved in the Acceptance Tests--and we expect that modifications may be required to fit the particular characteristics of a specific project.

  8. Workers Safely Tear Down Towers at Manhattan Project Site | Department of

    Office of Environmental Management (EM)

    Energy Safely Tear Down Towers at Manhattan Project Site Workers Safely Tear Down Towers at Manhattan Project Site August 21, 2014 - 12:00pm Addthis Workers observe the demolition of the West Water Tower at Los Alamos National Laboratory. Workers observe the demolition of the West Water Tower at Los Alamos National Laboratory. The East Water Tower falls. The East Water Tower falls. EM’s federal team for the demolition project, from left, Fire Coordinator Allan Trujillo, DOE Intern Kathy

  9. Conversion of Solar Two to a Kokhala hybrid power tower

    SciTech Connect (OSTI)

    Price, H.W.

    1997-06-01

    The continued drop in energy prices and restructuring of the utility industry have reduced the likelihood that a follow-on commercial 100-MW, power tower project will be built immediately following the Solar Two demonstration project. Given this, it would be desirable to find a way to extend the life of the Solar Two project to allow the plant to operate as a showcase for future power tower projects. This paper looks at the possibility of converting Solar Two into a commercial Kokhala hybrid power tower plant at the end of its demonstration period in 1998. The study identifies two gas turbines that could be integrated into a Kokhala cycle at Solar Two and evaluates the design, expected performance, and economics of each of the systems. The study shows that a commercial Kokhala project at Solar Two could produce power at a cost of less than 7 e/kWhr.

  10. 2010sr27[cooling_tower_complete].doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Friday, September 17, 2010 james-r.giusti@srs.gov Paivi Nettamo, SRNS, (803) 952-6938 paivi.nettamo@srs.gov K Cooling Tower Project Reaches Completion Aiken, S.C. - One of the most visual milestones of cleanup projects underway within the Department of Energy's Office of Environmental Management was the demolition of the K-Reactor Cooling Tower at the Savannah River Site (SRS). Now, this American Recovery and Reinvestment Act project has been completed one month ahead of schedule, with debris

  11. Solar Two: A successful power tower demonstration project

    SciTech Connect (OSTI)

    REILLY,HUGH E.; PACHECO,JAMES E.

    2000-03-02

    Solar Two, a 10MWe power tower plant in Barstow, California, successfully demonstrated the production of grid electricity at utility-scale with a molten-salt solar power tower. This paper provides an overview of the project, from inception in 1993 to closure in the spring of 1999. Included are discussions of the goals of the Solar Two consortium, the planned-vs.-actual timeline, plant performance, problems encountered, and highlights and successes of the project. The paper concludes with a number of key results of the Solar Two test and evaluation program.

  12. Modifications to Replacement Costs System

    SciTech Connect (OSTI)

    Godec, M. [ICF Resources, Inc., Fairfax, VA (United States)

    1989-05-18

    The purpose of this memorandum is to document the improvements and modifications made to the Replacement Costs of Crude Oil (REPCO) Supply Analysis System. While some of this work was performed under our previous support contract to DOE/ASFE, we are presenting all modifications and improvements are presented here for completeness. The memo primarily documents revisions made to the Lower-48 Onshore Model. Revisions and modifications made to other components and models in the REPCO system which are documented elsewhere are only highlighted in this memo. Generally, the modifications made to the Lower-48 Onshore Model reflect changes that have occurred in domestic drilling, oil field costs, and reserves since 1982, the date of the most recent available data used for the original Replacement Costs report, published in 1985.

  13. Property:CoolingTowerWaterUseAnnlAvgGross | Open Energy Information

    Open Energy Info (EERE)

    Property Name CoolingTowerWaterUseAnnlAvgGross Property Type Number Description Cooling Tower Water use (annual average) (afday) Gross. Retrieved from "http:en.openei.orgw...

  14. Property:CoolingTowerWaterUseWinterGross | Open Energy Information

    Open Energy Info (EERE)

    lingTowerWaterUseWinterGross Property Type Number Description Cooling Tower Water use (winter average) (afday) Gross. Retrieved from "http:en.openei.orgwindex.php?titleProper...

  15. Executive Summary: Assessment of Parabolic Trough and Power Tower Solar Technology Cost and Performance Forecasts

    SciTech Connect (OSTI)

    Not Available

    2003-10-01

    Sargent& Lundy LLC conducted an independent analysis of parabolic trough and power tower solar technology cost and performance.

  16. Assessment of Parabolic Trough and Power Tower Solar Technology Cost and Performance Forecasts

    SciTech Connect (OSTI)

    Not Available

    2003-10-01

    Sargent and Lundy LLC conducted an independent analysis of parabolic trough and power tower solar technology cost and performance.

  17. Add helper cooling towers to control discharge temperatures

    SciTech Connect (OSTI)

    Lander, J.; Christensen, G.

    1993-04-01

    This article describes the retrofitting of helper cooling towers to the Crystal River energy complex to reduce thermal pollution to the Gulf of Mexico. The topics of the article include the design concept, evaluation of design alternatives, a project description, economic evaluation, marine organism control, power requirements, and auxiliary systems.

  18. Solar Power Tower Design Basis Document, Revision 0

    SciTech Connect (OSTI)

    ZAVOICO,ALEXIS B.

    2001-07-01

    This report contains the design basis for a generic molten-salt solar power tower. A solar power tower uses a field of tracking mirrors (heliostats) that redirect sunlight on to a centrally located receiver mounted on top a tower, which absorbs the concentrated sunlight. Molten nitrate salt, pumped from a tank at ground level, absorbs the sunlight, heating it up to 565 C. The heated salt flows back to ground level into another tank where it is stored, then pumped through a steam generator to produce steam and make electricity. This report establishes a set of criteria upon which the next generation of solar power towers will be designed. The report contains detailed criteria for each of the major systems: Collector System, Receiver System, Thermal Storage System, Steam Generator System, Master Control System, and Electric Heat Tracing System. The Electric Power Generation System and Balance of Plant discussions are limited to interface requirements. This design basis builds on the extensive experience gained from the Solar Two project and includes potential design innovations that will improve reliability and lower technical risk. This design basis document is a living document and contains several areas that require trade-studies and design analysis to fully complete the design basis. Project- and site-specific conditions and requirements will also resolve open To Be Determined issues.

  19. Class 1 Permit Modification Notifications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Class 1 Permit Modification Notifications Editorial Changes in Monitoring Records Text in Part 1 Editorial Changes in Attachment C6 and Attachment C3 Update Table L-4 and List of Active Environmental Permits Clarify Text Related to Marking and Labeling Packages in Part 3 Clarify Table E-1a Revise Table 4.1.1 Revise Table G-1 Waste Isolation Pilot Plant Carlsbad, New Mexico NM4890139088-TSDF February 2014 Table of Contents Transmittal Letter Table of Contents

  20. NREL: MIDC/National Wind Technology Center M2 Tower (39.91 N, 105.235 W,

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1855 m, GMT-7) National Wind Technology Center M2 Tower

  1. Brayton-Cycle Baseload Power Tower CSP System

    SciTech Connect (OSTI)

    Anderson, Bruce

    2013-12-31

    The primary objectives of Phase 2 of this Project were: 1. Engineer, fabricate, and conduct preliminary testing on a low-pressure, air-heating solar receiver capable of powering a microturbine system to produce 300kWe while the sun is shining while simultaneously storing enough energy thermally to power the system for up to 13 hours thereafter. 2. Cycle-test a high-temperature super alloy, Haynes HR214, to determine its efficacy for the system’s high-temperature heat exchanger. 3. Engineer the thermal energy storage system This Phase 2 followed Wilson’s Phase 1, which primarily was an engineering feasibility study to determine a practical and innovative approach to a full Brayton-cycle system configuration that could meet DOE’s targets. Below is a summary table of the DOE targets with Wilson’s Phase 1 Project results. The results showed that a Brayton system with an innovative (low pressure) solar receiver with ~13 hours of dry (i.e., not phase change materials or molten salts but rather firebrick, stone, or ceramics) has the potential to meet or exceed DOE targets. Such systems would consist of pre-engineered, standardized, factory-produced modules to minimize on-site costs while driving down costs through mass production. System sizes most carefully analyzed were in the range of 300 kWe to 2 MWe. Such systems would also use off-the-shelf towers, blowers, piping, microturbine packages, and heliostats. Per DOE’s instructions, LCOEs are based on the elevation and DNI levels of Daggett, CA, for a 100 MWe power plant following 2 GWe of factory production of the various system components. Success criteria DOE targets Wilson system LCOE DOE’s gas price $6.75/MBtu 9 cents/kWh 7.7 cents/kWh LCOE Current gas price $4.71/MBtu NA 6.9 cents/kWh Capacity factor 75% (6500hr) 75-100% Solar fraction 85% (5585hr) >5585hr Receiver cost $170/kWe $50/kWe Thermal storage cost $20/kWhth $13/kWhth Heliostat cost $120/m2 $89.8/m2

  2. Solar Power Tower Integrated Layout and Optimization Tool Background |

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Concentrating Solar Power | NREL Solar Power Tower Integrated Layout and Optimization Tool Background SolarPILOT(tm) offers several unique capabilities compared to other software tools. Unlike exclusively ray-tracing tools, SolarPILOT runs the analytical simulation engine that uses a modified Gaussian series expansion to characterize the image generated by each heliostat. Rather than construct the model of the image using a large number of rays that eventually approach a Gaussian-form image

  3. ICP Contract Modifications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SPECTRA TECH INC (STI) Modifications to Contract No. DE-EM0003976 You are here: DOE-ID Home > Contracts, Financial Assistance & Solicitations > STI Contract > STI Modifications Blue Line Free Acrobat Reader Link The documents listed below represent an electronic copy of modifications to the contract for the Spectra Tech, Inc. (STI). These documents are in PDF format. The Adobe Reader is required to access them. If you do not currently have the Acrobat Reader, you may download the

  4. AMWTP Contract Modifications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    PROJECT (AMWTP) Idaho Treatment Group, LLC (ITG) Modifications to Contract No. DE-EM0001467 You are here: DOE-ID Home > Contracts, Financial Assistance & Solicitations > AMWTP Contract > AMWTP Modifications Blue Line Free Acrobat Reader Link The documents listed below represent an electronic copy of modifications to the contract for the AMWTP. These documents are in PDF format. The Adobe Reader is required to access them. If you do not currently have the Acrobat Reader, you may

  5. NREL: Technology Deployment - Resource Maps for Taller Towers Reveal New

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Areas for Wind Project Development Resource Maps for Taller Towers Reveal New Areas for Wind Project Development News Mapping the Frontier of New Wind Power Potential Publications Southeastern Wind Coalition fact sheets Southeast Wind Energy Fact Sheet Enabling Wind Power Nationwide Wind Vision: A New Era for Wind Power in the United States Sponsors AWS Truepower Southeastern Wind Coalition Key Partners U.S. Department of Energy Contact Ian Baring-Gould, 303-384-7021 A picture of a tall wind

  6. Permit application modifications

    SciTech Connect (OSTI)

    1995-11-01

    This document contains the Permit Application Modifications for the Y-12 Industrial Landfill V site on the Oak Ridge Reservation. These modifications include the assessment of stability of the proposed Landfill V under static and loading conditions. Analyses performed include the general slope stability, veneer stability of the bottom liner and cover system, and a liquefaction potential assessment of the foundation soils.

  7. ON THE STRUCTURE AND STABILITY OF MAGNETIC TOWER JETS

    SciTech Connect (OSTI)

    Huarte-Espinosa, M.; Frank, A.; Blackman, E. G.; Ciardi, A.; Hartigan, P.; Lebedev, S. V.; Chittenden, J. P.

    2012-09-20

    Modern theoretical models of astrophysical jets combine accretion, rotation, and magnetic fields to launch and collimate supersonic flows from a central source. Near the source, magnetic field strengths must be large enough to collimate the jet requiring that the Poynting flux exceeds the kinetic energy flux. The extent to which the Poynting flux dominates kinetic energy flux at large distances from the engine distinguishes two classes of models. In magneto-centrifugal launch models, magnetic fields dominate only at scales {approx}< 100 engine radii, after which the jets become hydrodynamically dominated (HD). By contrast, in Poynting flux dominated (PFD) magnetic tower models, the field dominates even out to much larger scales. To compare the large distance propagation differences of these two paradigms, we perform three-dimensional ideal magnetohydrodynamic adaptive mesh refinement simulations of both HD and PFD stellar jets formed via the same energy flux. We also compare how thermal energy losses and rotation of the jet base affects the stability in these jets. For the conditions described, we show that PFD and HD exhibit observationally distinguishable features: PFD jets are lighter, slower, and less stable than HD jets. Unlike HD jets, PFD jets develop current-driven instabilities that are exacerbated as cooling and rotation increase, resulting in jets that are clumpier than those in the HD limit. Our PFD jet simulations also resemble the magnetic towers that have been recently created in laboratory astrophysical jet experiments.

  8. Method and system for simulating heat and mass transfer in cooling towers

    DOE Patents [OSTI]

    Bharathan, Desikan; Hassani, A. Vahab

    1997-01-01

    The present invention is a system and method for simulating the performance of a cooling tower. More precisely, the simulator of the present invention predicts values related to the heat and mass transfer from a liquid (e.g., water) to a gas (e.g., air) when provided with input data related to a cooling tower design. In particular, the simulator accepts input data regarding: (a) cooling tower site environmental characteristics; (b) cooling tower operational characteristics; and (c) geometric characteristics of the packing used to increase the surface area within the cooling tower upon which the heat and mass transfer interactions occur. In providing such performance predictions, the simulator performs computations related to the physics of heat and mass transfer within the packing. Thus, instead of relying solely on trial and error wherein various packing geometries are tested during construction of the cooling tower, the packing geometries for a proposed cooling tower can be simulated for use in selecting a desired packing geometry for the cooling tower.

  9. System and method for aligning heliostats of a solar power tower

    DOE Patents [OSTI]

    Convery, Mark R.

    2013-01-01

    Disclosed is a solar power tower heliostat alignment system and method that includes a solar power tower with a focal area, a plurality of heliostats that each reflect sunlight towards the focal area of the solar power tower, an off-focal area location substantially close to the focal area of the solar power tower, a communication link between the off-focal area location and a misaligned heliostat, and a processor that interprets the communication between the off-focal area location and the misaligned heliostat to identify the misaligned heliostat from the plurality of heliostats and that determines a correction for the identified misaligned heliostat to realign the misaligned heliostat to reflect sunlight towards the focal area of the solar power tower.

  10. ICP Contract Modifications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Modifications to Contract No. DE-AC07-05ID14516 You are here: DOE-ID Home > Contracts, Financial Assistance & Solicitations > ICP Contract > ICP Modifications Blue Line Free Acrobat Reader Link The documents listed below represent an electronic copy of modifications to the contract for the Idaho Cleanup Project (ICP). These documents are in PDF format. The Adobe Reader is required to access them. If you do not currently have the Acrobat Reader, you may download the Reader FREE by

  11. ICP Contract Modifications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Core Modifications to Contract No. DE-EM0004083 You are here: DOE-ID Home > Contracts, Financial Assistance & Solicitations > ICP-Core Contract > ICP-Core Modifications Blue Line Free Acrobat Reader Link The documents listed below represent an electronic copy of modifications to the contract for the Idaho Cleanup Project (ICP) Core. These documents are in PDF format. The Adobe Reader is required to access them. If you do not currently have the Acrobat Reader, you may download the

  12. INL Contract Modifications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Modifications to Contract No. DE-AC07-05ID14517 You are here: DOE-ID Home > Contracts, Financial Assistance & Solicitations > INL Contract > INL Basic Modifications Blue Line Free Acrobat Reader Link The documents listed below represent an electronic copy of modifications to the contract for the Management and Operation of the INL awarded to Battelle Energy Alliance, LLC. These documents are in PDF format. The Adobe Reader is required to access them. If you do not currently have the

  13. WRPS Contract Modifications - Hanford Site

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract Modifications Office of River Protection ORP Contracts & Procurements Home DOE-ORP Contract Management Plans DOE-ORP Prime Contracts BNI Contract BNI Contract Modifications ATL Contract ATL Contract Modifications WRPS Contract WRPS Contract Modifications CH2M Contract CH2M Contract Modifications WAI Contract WAI Contract Mods DOE-ORP Contracting Officers DOE ORP Contracting Officer Representatives DOE ORP Purchase Card Buyers WRPS Contract Modifications Email Email Page | Print

  14. ATL Contract Modifications - Hanford Site

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract Modifications Office of River Protection ORP Contracts & Procurements Home DOE-ORP Contract Management Plans DOE-ORP Prime Contracts BNI Contract BNI Contract Modifications ATL Contract ATL Contract Modifications WRPS Contract WRPS Contract Modifications CH2M Contract CH2M Contract Modifications WAI Contract WAI Contract Mods DOE-ORP Contracting Officers DOE ORP Contracting Officer Representatives DOE ORP Purchase Card Buyers ATL Contract Modifications Email Email Page | Print Print

  15. BNI Contract Modifications - Hanford Site

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract Modifications Office of River Protection ORP Contracts & Procurements Home DOE-ORP Contract Management Plans DOE-ORP Prime Contracts BNI Contract BNI Contract Modifications ATL Contract ATL Contract Modifications WRPS Contract WRPS Contract Modifications CH2M Contract CH2M Contract Modifications WAI Contract WAI Contract Mods DOE-ORP Contracting Officers DOE ORP Contracting Officer Representatives DOE ORP Purchase Card Buyers BNI Contract Modifications Email Email Page | Print Print

  16. The Cryogenic Dark Matter Search: First 5-Tower Data and Improved Understanding of Ionization Collection

    SciTech Connect (OSTI)

    Bailey, Catherine N.

    2010-01-01

    The Cryogenic Dark Matter Search (CDMS) is searching for Weakly Interacting Massive Particles (WIMPs) with cryogenic particle detectors. These detectors have the ability to discriminate between nuclear recoil candidate and electron recoil background events by collecting both phonon and ionization energy from recoils in the detector crystals. The CDMS-II experiment has completed analysis of the first data runs with 30 semiconductor detectors at the Soudan Underground Laboratory, resulting in a world leading WIMP-nucleon spin-independent cross section limit for WIMP masses above 44 GeV/c{sup 2}. As CDMS aims to achieve greater WIMP sensitivity, it is necessary to increase the detector mass and discrimination between signal and background events. Incomplete ionization collection results in the largest background in the CDMS detectors as this causes electron recoil background interactions to appear as false candidate events. Two primary causes of incomplete ionization collection are surface and bulk trapping. Recent work has been focused on reducing surface trapping through the modification of fabrication methods for future detectors. Analyzing data taken with test devices has shown that hydrogen passivation of the amorphous silicon blocking layer worsens surface trapping. Additional data has shown that the iron-ion implantation used to lower the critical temperature of the tungsten transition-edge sensors causes a degradation of the ionization collection. Using selective implantation on future detectors may improve ionization collection for events near the phonon side detector surface. Bulk trapping is minimized by neutralizing ionized lattice impurities. Detector investigations at testing facilities and in situ at the experimental site have provided methods to optimize the neutralization process and monitor running conditions to maintain full ionization collection. This work details my contribution to the 5-tower data taking, monitoring, and analysis effort as well as the SuperCDMS detector development with the focus on monitoring and improving ionization collection in the detectors.

  17. Towering oak, the sun - porch house winner of the ''1982 German research award''

    SciTech Connect (OSTI)

    Berndt, G.W.P.

    1983-12-01

    The design for this energy-efficient house was developed to suit a benign climate with much rain, wind, and fog. The building's basic construction guarantees the most limited energy-use possible. This is achieved through a unique houseform, which encloses and warms the living spaces with a thick thermal coat: walls = 6'' semi-rigid glass fiber boards, R-19; roof = 10'' foil faced fiber glass, R = 30. Windows are located only on the south side, to ensure optimal sun-ray capture. The housefront consists of a ''sun-porch'' (Sonnenhof), which is a further development of the well-known German ''Wintergarten'' (winter garden). In this climate region, one can only expect a yearly average of five days with a summer temperature of over 25/sup 0/C (77/sup 0/F); however, with a ''sun-porch'' the summer can make itself at home. In winter, the ''sun-porch'' protects against storms and always offers temperatures above the 7/sup 0/C (45/sup 0/F) minimum, a product of the compact roof and double glass with selective coating. On sunny winter days, one may even dine on the balconies. The estimation technique represented here is based on a procedure devised at the Los Alamos Scientific Laboratory, New Mexico, (Passive Solar Handbook, Vol. 2, J.D. Balcomb). ''Towering Oak's'' solar savings fraction = 49.0%; heating load = 2.56 BTU/sq. ft. Better results have yet to be achieved in Germany. In the USA, this could be increased to a solar fraction of up to 90%. Some modifications would, however, be necessary to suit the local climate (sun control devices, etc.).

  18. AmeriFlux US-Skr Shark River Slough (Tower SRS-6) Everglades (Dataset) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Dataset: AmeriFlux US-Skr Shark River Slough (Tower SRS-6) Everglades Citation Details In-Document Search Title: AmeriFlux US-Skr Shark River Slough (Tower SRS-6) Everglades This is the AmeriFlux version of the carbon flux data for the site US-Skr Shark River Slough (Tower SRS-6) Everglades. Site Description - The Florida Everglades Shark River Slough Mangrove Forest site is located along the Shark River in the western region of Everglades National Park. Also referred to as

  19. Simulations on Head-Tail Radio Galaxies Using Magnetic Tower Model

    SciTech Connect (OSTI)

    Gan, Zhaoming; Li, Hui; Li, Shengtai; Yuan, Feng

    2015-08-19

    The presentation is a series of slides showing diagrams, equations, and various photographs. In summary, a detailed comparison was carried out between hydrodynamic jet and MHD jet models (the magnetic tower jet, more precisely), in an effort to understand the underlying physics of observed radio galaxies, and also its possible indications for jet feedback. It was found that the results of magnetic tower model usually lie in a reasonable regime, and in several aspects, the magnetic tower jet seems more preferred than pure hydrodynamic jet models.

  20. Towers Help Determine the Impact of 2012 U.S. Drought on the Carbon Cycle

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Towers Help Determine the Impact of 2012 U.S. Drought on the Carbon Cycle In 2012, the U.S. experienced the warmest spring on record, and severest drought since the Dust Bowl. Scientists - interested in the carbon flux between vegetation and the atmosphere during extreme climate events - used a network of 22 carbon-sensing towers to map flux across the nation during 2012.

  1. Tall Tower Wind Energy Monitoring and Numerical Model Validation in Northern Nevada

    SciTech Connect (OSTI)

    Koracin, D.; Kaplan, M.; Smith, C.; McCurdy, G.; Wolf, A.; McCord, T.; King, K.; Belu, R.; Horvath, K.

    2015-10-01

    The main objectives of this project were to conduct a tall-tower and sodar field campaign in complex terrain, investigate wind properties relevant to wind energy assessment, and evaluate high-resolution models with fixed and adaptive grid structures. Two 60-m towers at Virginia Peak ridges near Washoe Valley, Nevada, were instrumented with cup and vane anemometers as well as sonic anemometers, and an acoustic sounder (hereafter sodar) was installed near one of the towers. The towers were located 2,700 m apart with a vertical distance of 140 m elevation between their bases. Each tower had a downhill exposure of rolling complex terrain, with the nearby valley floor 3,200 m to the west and 800 m below the summit. Cup anemometers were installed at both towers at 20, 40, and 60 m, wind vanes at 20 and 60 m, and sonic anemometers at 20 and 60 m. The sodar measurements were nominally provided every 10 m in vertical distance from 40 to 200 m with the quality of the data generally decreasing with height. Surface air temperature, atmospheric pressure, and radiation measurements were conducted at 1.5 m AGL at both of the towers. Although the plan was to conduct a 1-year period of data collection, we extended the period (October 5, 2012 through February 24, 2014) to cover for possible data loss from instrument or communication problems. We also present a preliminary analysis of the towers and sodar data, including a detailed inventory of available and missing data as well as outliers. The analysis additionally includes calculation of the Weibull parameters, turbulence intensity, and initial computation of wind power density at various heights.

  2. Cooling tower and plume modeling for satellite remote sensing applications

    SciTech Connect (OSTI)

    Powers, B.J.

    1995-05-01

    It is often useful in nonproliferation studies to be able to remotely estimate the power generated by a power plant. Such information is indirectly available through an examination of the power dissipated by the plant. Power dissipation is generally accomplished either by transferring the excess heat generated into the atmosphere or into bodies of water. It is the former method with which we are exclusively concerned in this report. We discuss in this report the difficulties associated with such a task. In particular, we primarily address the remote detection of the temperature associated with the condensed water plume emitted from the cooling tower. We find that the effective emissivity of the plume is of fundamental importance for this task. Having examined the dependence of the plume emissivity in several IR bands and with varying liquid water content and droplet size distributions, we conclude that the plume emissivity, and consequently the plume brightness temperature, is dependent upon not only the liquid water content and band, but also upon the droplet size distribution. Finally, we discuss models dependent upon a detailed point-by-point description of the hydrodynamics and thermodynamics of the plume dynamics and those based upon spatially integrated models. We describe in detail a new integral model, the LANL Plume Model, which accounts for the evolution of the droplet size distribution. Some typical results obtained from this model are discussed.

  3. An Evaluation of Molten-Salt Power Towers Including Results of the Solar Two Project

    SciTech Connect (OSTI)

    REILLY, HUGH E.; KOLB, GREGORY J.

    2001-11-01

    This report utilizes the results of the Solar Two project, as well as continuing technology development, to update the technical and economic status of molten-salt power towers. The report starts with an overview of power tower technology, including the progression from Solar One to the Solar Two project. This discussion is followed by a review of the Solar Two project--what was planned, what actually occurred, what was learned, and what was accomplished. The third section presents preliminary information regarding the likely configuration of the next molten-salt power tower plant. This section draws on Solar Two experience as well as results of continuing power tower development efforts conducted jointly by industry and Sandia National Laboratories. The fourth section details the expected performance and cost goals for the first commercial molten-salt power tower plant and includes a comparison of the commercial performance goals to the actual performance at Solar One and Solar Two. The final section summarizes the successes of Solar Two and the current technology development activities. The data collected from the Solar Two project suggest that the electricity cost goals established for power towers are reasonable and can be achieved with some simple design improvements.

  4. CSC Contract Modifications - Hanford Site

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract Modifications DOE-RL Contracts/Procurements RL Contracts & Procurements Home Prime Contracts Current Solicitations Other Sources DOE RL Contracting Officers DOE RL Contracting Officer Representatives CSC Contract Modifications Email Email Page | Print Print Page |Text Increase Font Size Decrease Font Size 172 - This modification de-obligates unused funds. 171 - The purpose of this modification is to deobliigate funds, as this contract is in closeout status. 170 - The purpose of this

  5. 24 m meteorological tower data report period: January through December, 1996

    SciTech Connect (OSTI)

    Freeman, D.; Bowen, J.; Egami, R.; Coulombe, W.; Crow, D.; Cristani, B.; Schmidt, S.

    1997-12-01

    This report was prepared by the Desert Research Institute (DRI) for the US Department of Energy (DOE). It summarizes meteorological data collected at the 24 meter tower at the Nevada Test Site Hazardous Material Spill Center (HAZMAT) located at Frenchman Flat near Mercury, Nevada, approximately 75 miles northwest of Las Vegas, Nevada. The tower was originally installed in July, 1993 to characterize baseline conditions for an EPA sponsored experimental research program at the HAZMAT. This report presents results of the monitoring for January--December, 1996, providing: a status of the measurement systems during the report period and a summary of the meteorological conditions at the HAZMAT during the report period. The scope of the report is limited to summary data analyses and does not include extensive meteorological analysis. The tower was instrumented at 8 levels. Wind speed, wind direction, and temperature were measured at all 8 levels. Relative humidity was measured at 3 levels. Solar and net radiation were measured at 2 meters above the ground. Barometric pressure was measured at the base of the tower and soil temperature was measured near the base of the tower.

  6. Modification No. M074

    National Nuclear Security Administration (NNSA)

    No. M074 Page 2 of 2 BWXT Pantex, LLC Contract No. DE-AC-04AL:66620 1. Appendix D, "Key Personnel," dated October 13, 2003, that is currently in Section J of the Contract is hereby deleted in its entirety and replaced with Appendix D, "Key Personnel," dated August 23, 2004 (Attachment 1 of this Modification). 2. Section C of the Contract is modified to add paragraph 6.5, "Workers Compensation Matters ." This paragraph is stated below in its entirety. 6.5 Workers

  7. Change Number

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    6-02-01 Federal Facility Agreement and Consent Order Change Control Form Do not use blue ink. Type or print using black ink. Date 2/11/2002 Originator Phone P. M. Knollmeyer, Assistant Manager Central Plateau 376-7435 Class of Change [X] I - Signatories [ ] II - Executive Manager [ ] III - Project Manager Change Title Modification of the M-016 Series Milestones Description/Justification of Change The Hanford Federal Facility Agreement and Consent Order (TPA) contains commitments for the U.S.

  8. Design review report for modifications to RMCS safety class equipment

    SciTech Connect (OSTI)

    Corbett, J.E.

    1997-05-30

    This report documents the completion of the formal design review for modifications to the Rotary Mode Core Sampling (RMCS) safety class equipment. These modifications are intended to support core sampling operations in waste tanks requiring flammable gas controls. The objective of this review was to approve the Engineering Change Notices affecting safety class equipment used in the RMCS system. The conclusion reached by the review committee was that these changes are acceptable.

  9. Characteristics study of Transmission Line Mechanical Research Center (TLMRC) wind tower data

    SciTech Connect (OSTI)

    Shan, L. )

    1992-10-01

    To initiate and develop EPRI's wind loading research program, an experimental wind tower was erected at the TLMRC site. A number of anemometers were placed at different elevation levels of the wind tower. Strain gages were also mounted on the leg posts of the tower. The purposes of this experiment were to establish the wind characteristics at the TLMRC site, and to gain experience using different types of instrumentation and data acquisition techniques in field-wind loading experiments. Three sets of wind data collected from the TLMRC wind tower were validated and analyzed in this study. Since the characteristics of wind and response data can be described in different terms and by various methods, the study describes the concept, Identifies the focal point, and discusses the results of each method used in this report. In addition, some comments are provided on how to conduct the field-wind loading experiments as well as how to analyze the wind and response data. The results of this study show that: (1) the magnitudes of wind velocity and direction can vary considerably during a short period of time; (2) the mean vertical wind profile does not hold constant as usually assumed; (3) the turbulence intensity and the gust factor increase as the height above ground decreases; (4) the averaging time can greatly influence the results of wind data analysis; (5) although wind contains lime energy beyond 1 Hz, structural responses above 1 Hz can be excited; (6) strong relationships exist between the wind velocity and the responses in the leg posts of the wind tower. System identification, a tool for establishing models of dynamic systems based in observed data, is successfully used in a trial application which estimates the relationship between the wind velocity and the responses in the wind tower.

  10. AmeriFlux US-Ha1 Harvard Forest EMS Tower (HFR1)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Munger, J. William [Harvard University

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-Ha1 Harvard Forest EMS Tower (HFR1). Site Description - The Harvard Forest tower is on land owned by Harvard University. The site is designated as an LTER site. Most of the surrounding area was cleared for agrigulture during European settlement in 1600-1700. The site has been regrowing since before 1900 (based on tree ring chronologies) and is now predominantly red oak and red maple, with patches of mature hemlock stand and individual white pine. Overstory trees were uprooted by hurricane in 1938. Climate measurements have been made at Harvard Forest since 1964.

  11. Lawrence Livermore National Laboratory (LLNL) Experimental Test Site (Site 300) Salinity Evaluation and Minimization Plan for Cooling Towers and Mechanical Equipment Discharges

    SciTech Connect (OSTI)

    Daily III, W D

    2010-02-24

    This document was created to comply with the Central Valley Regional Water Quality Control Board (CVRWQCB) Waste Discharge Requirement (Order No. 98-148). This order established new requirements to assess the effect of and effort required to reduce salts in process water discharged to the subsurface. This includes the review of technical, operational, and management options available to reduce total dissolved solids (TDS) concentrations in cooling tower and mechanical equipment water discharges at Lawrence Livermore National Laboratory's (LLNL's) Experimental Test Site (Site 300) facility. It was observed that for the six cooling towers currently in operation, the total volume of groundwater used as make up water is about 27 gallons per minute and the discharge to the subsurface via percolation pits is 13 gallons per minute. The extracted groundwater has a TDS concentration of 700 mg/L. The cooling tower discharge concentrations range from 700 to 1,400 mg/L. There is also a small volume of mechanical equipment effluent being discharged to percolation pits, with a TDS range from 400 to 3,300 mg/L. The cooling towers and mechanical equipment are maintained and operated in a satisfactory manner. No major leaks were identified. Currently, there are no re-use options being employed. Several approaches known to reduce the blow down flow rate and/or TDS concentration being discharged to the percolation pits and septic systems were reviewed for technical feasibility and cost efficiency. These options range from efforts as simple as eliminating leaks to implementing advanced and innovative treatment methods. The various options considered, and their anticipated effect on water consumption, discharge volumes, and reduced concentrations are listed and compared in this report. Based on the assessment, it was recommended that there is enough variability in equipment usage, chemistry, flow rate, and discharge configurations that each discharge location at Site 300 should be considered separately when deciding on an approach for reducing the salt discharge to the subsurface. The smaller units may justify moderate changes to equipment, and may benefit from increased cleaning frequencies, more accurate and suitable chemical treatment, and sources of make up water and discharge re-use. The larger cooling towers would be more suitable for automated systems where they don't already exist, re-circulation and treatment of blow down water, and enhanced chemical dosing strategies. It may be more technically feasible and cost efficient for the smaller cooling towers to be replaced by closed loop dry coolers or hybrid towers. There are several potential steps that could be taken at each location to reduce the TDS concentration and/or water use. These include: sump water filtration, minimization of drift, accurate chemical dosing, and use of scale and corrosion coupons for chemical calibration. The implementation of some of these options could be achieved by a step-wise approach taken at two representative facilities. Once viable prototype systems have been proven in the field, systematic implementation should proceed for the remaining systems, with cost, desired reduction, and general feasibility taken into consideration for such systems.

  12. Conceptual Design of a 100 MWe Modular Molten Salt Power Tower Plant

    SciTech Connect (OSTI)

    James E. Pacheco; Carter Moursund, Dale Rogers, David Wasyluk

    2011-09-20

    A conceptual design of a 100 MWe modular molten salt solar power tower plant has been developed which can provide capacity factors in the range of 35 to 75%. Compared to single tower plants, the modular design provides a higher degree of flexibility in achieving the desired customer's capacity factor and is obtained simply by adjusting the number of standard modules. Each module consists of a standard size heliostat field and receiver system, hence reengineering and associated unacceptable performance uncertainties due to scaling are eliminated. The modular approach with multiple towers also improves plant availability. Heliostat field components, receivers and towers are shop assembled allowing for high quality and minimal field assembly. A centralized thermal-storage system stores hot salt from the receivers, allowing nearly continuous power production, independent of solar energy collection, and improved parity with the grid. A molten salt steam generator converts the stored thermal energy into steam, which powers a steam turbine generator to produce electricity. This paper describes the conceptual design of the plant, the advantages of modularity, expected performance, pathways to cost reductions, and environmental impact.

  13. Impact of environmental concerns on cooling-tower design and operation

    SciTech Connect (OSTI)

    Hensley, J.C.

    1981-01-01

    New and sometimes unexpected environmental concerns surface from time to time, and each has its special effect on the selection, pricing, and operation of cooling towers. This paper discusses the following concerns, which are either current or are becoming significant: water conservation, energy conservation, noise, drift, blowdown, visual impact, and construction materials that are environmentally sensitive. 3 refs.

  14. Experimental optimization of cooling-tower-fan control based on field data. Master's thesis

    SciTech Connect (OSTI)

    Herman, D.L.

    1991-04-01

    Energy costs continue to play an important role in the decision-making process for building design and operation. Since the chiller, cooling tower fans, and associated pumps consume the largest fraction of energy in a heating, ventilating, and air-conditioning (HVAC) system, the control of these components is of major importance in determining building energy use. A significant control parameter for the chilled water system is the minimum entering condenser water set point temperature at which the cooling tower fans are cycled on and off, several studies have attempted to determine the optimum value for this minimum set point temperature, but direct measurements are not available to validate these studies. The purpose of this study was to experimentally determine the optimum minimum entering condenser water set point temperature from field data based on minimum energy consumption and to validate a chilled water system analytical model previously developed in earlier work. The total chiller system electrical consumption (chiller and cooling tower fan energy) was measured for four entering condensor water set point temperatures (70, 75, 80, and 85 deg F). The field results were compared to results obtained using an analytical model previously developed in a thesis entitled Optimized Design of a Commercial Building Chiller/Cooling Tower System, written by Joyce.

  15. Biocide usage in cooling towers in the electric power and petroleum refining industries

    SciTech Connect (OSTI)

    Veil, J.; Rice, J.K.; Raivel, M.E.S.

    1997-11-01

    Cooling towers users frequently apply biocides to the circulating cooling water to control growth of microorganisms, algae, and macroorganisms. Because of the toxic properties of biocides, there is a potential for the regulatory controls on their use and discharge to become increasingly more stringent. This report examines the types of biocides used in cooling towers by companies in the electric power and petroleum refining industries, and the experiences those companies have had in dealing with agencies that regulate cooling tower blowdown discharges. Results from a sample of 67 electric power plants indicate that the use of oxidizing biocides (particularly chlorine) is favored. Quaternary ammonia salts (quats), a type of nonoxidizing biocide, are also used in many power plant cooling towers. The experience of dealing with regulators to obtain approval to discharge biocides differs significantly between the two industries. In the electric power industry, discharges of any new biocide typically must be approved in writing by the regulatory agency. The approval process for refineries is less formal. In most cases, the refinery must notify the regulatory agency that it is planning to use a new biocide, but the refinery does not need to get written approval before using it. The conclusion of the report is that few of the surveyed facilities are having any difficulty in using and discharging the biocides they want to use.

  16. A STUDY ON LEGIONELLA PNEUMOPHILA, WATER CHEMISTRY, AND ATMOSPHERIC CONDITIONS IN COOLING TOWERS AT THE SAVANNAH RIVER SITE

    SciTech Connect (OSTI)

    Smith, C.; Brigmon, R.

    2009-10-20

    Legionnaires disease is a pneumonia caused by the inhalation of the bacterium Legionella pneumophila. The majority of illnesses have been associated with cooling towers since these devices can harbor and disseminate the bacterium in the aerosolized mist generated by these systems. Historically, Savannah River Site (SRS) cooling towers have had occurrences of elevated levels of Legionella in all seasons of the year and in patterns that are difficult to predict. Since elevated Legionella in cooling tower water are a potential health concern a question has been raised as to the best control methodology. In this work we analyze available chemical, biological, and atmospheric data to determine the best method or key parameter for control. The SRS 4Q Industrial Hygiene Manual, 4Q-1203, 1 - G Cooling Tower Operation and the SRNL Legionella Sampling Program, states that 'Participation in the SRNL Legionella Sampling Program is MANDATORY for all operating cooling towers'. The resulting reports include L. pneumophila concentration information in cells/L. L. pneumophila concentrations >10{sup 7} cells/L are considered elevated and unsafe so action must be taken to reduce these densities. These remedial actions typically include increase biocide addition or 'shocking'. Sometimes additional actions are required if the problem persists including increase tower maintenance (e.g. cleaning). Evaluation of 14 SRS cooling towers, seven water quality parameters, and five Legionella serogroups over a three-plus year time frame demonstrated that cooling tower water Legionella densities varied widely though out this time period. In fact there was no one common consistent significant variable across all towers. The significant factors that did show up most frequently were related to suspended particulates, conductivity, pH, and dissolved oxygen, not chlorine or bromine as might be expected. Analyses of atmospheric data showed that there were more frequent significant elevated Legionella concentrations when the dew point temperature was high--a summertime occurrence. However, analysis of the three years of Legionella monitoring data of the 14 different SRS Cooling Towers demonstrated that elevated concentrations are observed at all temperatures and seasons. The objective of this study is to evaluate the ecology of L. pneumophila including serogroups and population densities, chemical, and atmospheric data, on cooling towers at SRS to determine whether relationships exist among water chemistry, and atmospheric conditions. The goal is to more fully understand the conditions which inhibit or encourage L. pneumophila growth and supply this data and associated recommendations to SRS Cooling Tower personnel for improved management of operation. Hopefully this information could then be used to help control L. pneumophila growth more effectively in SRS cooling tower water.

  17. WIPP Hazardous Waste Permit - Approved Modifications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Approved Modifications Class 1 Permit Modification Notification to Update Contingency Plan, March 2006 Class 1 RCRA Permit Modification Correcting Typographical Error in Table B-10, October 24, 2005 Class 1 RCRA Permit Modification, Update Contingency Plan, October 16, 2006 Class 1 RCRA Permit Modification, Correct References, Inconsistencies and Figures, October 16, 2006 Class 1 Permit Modification, Correct Inconsistencies, November 30, 2006 Class 1 Permit Modification Panel 4 Figures January

  18. Class 1 Permit Modification Notification

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Waste Bureau New Mexico Environment Department 2905 Rodeo Park Drive East, Bu il ding 1 Santa Fe, New Mexico 87505-6303 JUL 0 5 2011 Subject: Notification of a Class 1 Permit Modification to the Hazardous Waste Facility Permit, Permit Number: NM4890139088-TSDF Dear Mr. Kieling : Enclosed is a Class 1 Permit Modification Notification 1 0: * Update Emergency Coordinator list We certify under penalty of law that this document and the enclosure were prepared under our direction or supervision in

  19. Modifications improve waterflood performance model

    SciTech Connect (OSTI)

    El-Banbi, A.H.; Abdel Wally, A.; Abd-el Fattah, K.A.; Sayyouh, M.H.

    1996-01-01

    Modifications to the Craig-Geffen-Morse (CGM) waterflooding model improve reservoir performance predictions and allow for the inclusion of pressure drop variations with time. The modified model was validated against numerical simulation results. The paper describes the CGM model, the hypothetical data set, the simulation technique, comparisons between the CGM model and the simulation, and modifications to the CGM model relating to pressure drop variation and water production.

  20. Current and Future Costs for Parabolic Trough and Power Tower Systems in the US Market: Preprint

    SciTech Connect (OSTI)

    Turchi, C.; Mehos, M.; Ho, C. K.; Kolb, G. J.

    2010-10-01

    NREL's Solar Advisor Model (SAM) is employed to estimate the current and future costs for parabolic trough and molten salt power towers in the US market. Future troughs are assumed to achieve higher field temperatures via the successful deployment of low melting-point, molten-salt heat transfer fluids by 2015-2020. Similarly, it is assumed that molten salt power towers are successfully deployed at 100MW scale over the same time period, increasing to 200MW by 2025. The levelized cost of electricity for both technologies is predicted to drop below 11 cents/kWh (assuming a 10% investment tax credit and other financial inputs outlined in the paper), making the technologies competitive in the marketplace as benchmarked by the California MPR. Both technologies can be deployed with large amounts of thermal energy storage, yielding capacity factors as high as 65% while maintaining an optimum LCOE.

  1. The trigger and data acquisition for the NEMO-Phase 2 tower

    SciTech Connect (OSTI)

    Pellegrino, C.; Biagi, S.; Fusco, L. A.; Margiotta, A.; Spurio, M.; Chiarusi, T.; and others

    2014-11-18

    In the framework of the Phase 2 of the NEMO neutrino telescope project, a tower with 32 optical modules is being operated since march 2013. A new scalable Trigger and Data Acquisition System (TriDAS) has been developed and extensively tested with the data from this tower. Adopting the all-data-to-shore concept, the NEMO TriDAS is optimized to deal with a continuous data-stream from off-shore to on-shore with a large bandwidth. The TriDAS consists of four computing layers: (i) data aggregation of isochronal hits from all optical modules; (ii) data filtering by means of concurrent trigger algorithms; (iii) composition of the filtered events into post-trigger files; (iv) persistent data storage. The TriDAS implementation is reported together with a review of dedicated on-line monitoring tools.

  2. Design considerations for concentrating solar power tower systems employing molten salt.

    SciTech Connect (OSTI)

    Moore, Robert Charles; Siegel, Nathan Phillip; Kolb, Gregory J.; Vernon, Milton E.; Ho, Clifford Kuofei

    2010-09-01

    The Solar Two Project was a United States Department of Energy sponsored project operated from 1996 to 1999 to demonstrate the coupling of a solar power tower with a molten nitrate salt as a heat transfer media and for thermal storage. Over all, the Solar Two Project was very successful; however many operational challenges were encountered. In this work, the major problems encountered in operation of the Solar Two facility were evaluated and alternative technologies identified for use in a future solar power tower operating with a steam Rankine power cycle. Many of the major problems encountered can be addressed with new technologies that were not available a decade ago. These new technologies include better thermal insulation, analytical equipment, pumps and values specifically designed for molten nitrate salts, and gaskets resistant to thermal cycling and advanced equipment designs.

  3. Current and future costs for parabolic trough and power tower systems in the US market.

    SciTech Connect (OSTI)

    Turchi, Craig; Kolb, Gregory J.; Mehos, Mark Steven; Ho, Clifford Kuofei

    2010-08-01

    NREL's Solar Advisor Model (SAM) is employed to estimate the current and future costs for parabolic trough and molten salt power towers in the US market. Future troughs are assumed to achieve higher field temperatures via the successful deployment of low melting-point, molten-salt heat transfer fluids by 2015-2020. Similarly, it is assumed that molten salt power towers are successfully deployed at 100MW scale over the same time period, increasing to 200MW by 2025. The levelized cost of electricity for both technologies is predicted to drop below 11 cents/kWh (assuming a 10% investment tax credit and other financial inputs outlined in the paper), making the technologies competitive in the marketplace as benchmarked by the California MPR. Both technologies can be deployed with large amounts of thermal energy storage, yielding capacity factors as high as 65% while maintaining an optimum LCOE.

  4. Final Report- Optimizing the CSP Tower Air Brayton Cycle System to Meet the SunShot Objectives

    Broader source: Energy.gov [DOE]

    Awardee: Southwest Research InstituteLocation: San Antonio, TXSubprogram: Concentrating Solar PowerFunding Program: SunShot Concentrating Solar Power R&DProject: Optimizing the CSP Tower Air...

  5. Validation of SWAY Wind Turbine Response in FAST, with a Focus on the Influence of Tower Wind Loads: Preprint

    SciTech Connect (OSTI)

    Koh, J. H.; Robertson, A.; Jonkman, J.; Driscoll, R.; Yin Kwee Ng, E.

    2015-04-23

    Need to modify simulated system behavior to the measured data, but the tower wind loads improved the comparison for nonoperating conditions. the SWAY system in both turbine operating and nonoperating conditions. Mixed results were observed when comparing the simulated system behavior to the measured data, but the tower wind loads improved the comparison for nonoperating conditions. without the new tower-load capability to examine its influence on the response characteristics of the system. This is important in situations when the turbine is parked in survival conditions. The simulation results were then compared to measured data from the SWAY system in both turbine operating and nonoperating conditions. Mixed results were observed when comparing the simulated system behavior to the measured data, but the tower wind loads improved the comparison for nonoperating conditions.

  6. Oregon Modification Application Geothermal Wells Form | Open...

    Open Energy Info (EERE)

    Modification Application Geothermal Wells Form Jump to: navigation, search OpenEI Reference LibraryAdd to library Form: Oregon Modification Application Geothermal Wells Form Form...

  7. Particle Distribution Modification by Low Amplitude Modes

    SciTech Connect (OSTI)

    White, R. B.; Gorelenkov, N.; Heidbrink, W. W.; Van Zeeland, M. A.

    2009-08-28

    Modification of a high energy particle distribution by a spectrum of low amplitude modes is investigated using a guiding center code. Only through resonance are modes effective in modifying the distribution. Diagnostics are used to illustrate the mode-particle interaction and to find which effects are relevant in producing significant resonance, including kinetic Poincare plots and plots showing those orbits with time averaged mode-particle energy transfer. Effects of pitch angle scattering and drag are studied, as well as plasma rotation and time dependence of the equilibrium and mode frequencies. A specific example of changes observed in a DIII-D deuterium beam distribution in the presence of low amplitude experimentally validated Toroidal Alfven (TAE) eigenmodes and Reversed Shear Alfven (RSAE) eigenmodes is examined in detail. Comparison with experimental data shows that multiple low amplitude modes can account for significant modification of high energy beam particle distributions. It is found that there is a stochastic threshold for beam profile modification, and that the experimental amplitudes are only slightly above this threshold.

  8. DOE/SC-ARM/TR-128 Tower Water-Vapor Mixing Ratio Value-Added

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    8 Tower Water-Vapor Mixing Ratio Value-Added Product April 2013 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights.

  9. List of Approved Changes - Hanford Site

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Changes Tri-Party Agreement The Agreement Announcements List of Approved Changes TPA Project Manager's Lists Modifications for Public Comment Data Management MP-14 WIDS...

  10. NREL National Wind Technology Center (NWTC): M2 Tower; Boulder, Colorado (Data)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jager, D.; Andreas, A.

    The National Wind Technology Center (NWTC), located at the foot of the Rocky Mountains near Boulder, Colorado, is a world-class research facility managed by NREL for the U.S. Department of Energy. NWTC researchers work with members of the wind energy industry to advance wind power technologies that lower the cost of wind energy through research and development of state-of-the-art wind turbine designs. NREL's Measurement and Instrument Data Center provides data from NWTC's M2 tower which are derived from instruments mounted on or near an 82 meter (270 foot) meteorological tower located at the western edge of the NWTC site and about 11 km (7 miles) west of Broomfield, and approximately 8 km (5 miles) south of Boulder, Colorado. The data represent the mean value of readings taken every two seconds and averaged over one minute. The wind speed and direction are measured at six heights on the tower and air temperature is measured at three heights. The dew point temperature, relative humidity, barometric pressure, totalized liquid precipitation, and global solar radiation are also available.

  11. Economic evaluation of solar-only and hybrid power towers using molten salt technology

    SciTech Connect (OSTI)

    Kolb, G.J.

    1996-12-01

    Several hybrid and solar-only configurations for molten-salt power towers were evaluated with a simple economic model, appropriate for screening analysis. The solar specific aspects of these plants were highlighted. In general, hybrid power towers were shown to be economically superior to solar-only plants with the same field size. Furthermore, the power-booster hybrid approach was generally preferred over the fuel-saver hybrid approach. Using today`s power tower technology, economic viability for the solar power-boost occurs at fuel costs in the neighborhood of $2.60/MBtu to $4.40/ MBtu (low heating value) depending on whether coal-based or gas-turbine-based technology is being offset. The cost Of CO[sub 2] avoidance was also calculated for solar cases in which the fossil fuel cost was too low for solar to be economically viable. The avoidance costs are competitive with other proposed methods of removing CO[sub 2] from fossil-fired power plants.

  12. NREL National Wind Technology Center (NWTC): M2 Tower; Boulder, Colorado (Data)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jager, D.; Andreas, A.

    1996-09-24

    The National Wind Technology Center (NWTC), located at the foot of the Rocky Mountains near Boulder, Colorado, is a world-class research facility managed by NREL for the U.S. Department of Energy. NWTC researchers work with members of the wind energy industry to advance wind power technologies that lower the cost of wind energy through research and development of state-of-the-art wind turbine designs. NREL's Measurement and Instrument Data Center provides data from NWTC's M2 tower which are derived from instruments mounted on or near an 82 meter (270 foot) meteorological tower located at the western edge of the NWTC site and about 11 km (7 miles) west of Broomfield, and approximately 8 km (5 miles) south of Boulder, Colorado. The data represent the mean value of readings taken every two seconds and averaged over one minute. The wind speed and direction are measured at six heights on the tower and air temperature is measured at three heights. The dew point temperature, relative humidity, barometric pressure, totalized liquid precipitation, and global solar radiation are also available.

  13. WIPP Hazardous Waste Permit - Class 1* (star) Modifications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    * (star) Modifications Submitted for NMED Approval

  14. High temperature performance of high-efficiency, multi-layer solar selective coatings for tower applications

    SciTech Connect (OSTI)

    Gray, M. H.; Tirawat, R.; Kessinger, K. A.; Ndione, P. F.

    2015-05-01

    The roadmap to next-generation concentrating solar power plants anticipates a progression to central towers with operating temperatures in excess of 650C. These higher temperatures are required to drive higher power-cycle efficiencies, resulting in lower cost energy. However, these conditions also place a greater burden on the materials making up the receiver. Any novel absorber material developed for next-generation receivers must be stable in air, cost effective, and survive thousands of heating and cooling cycles. The collection efficiency of a power tower plant can be increased if the energy absorbed by the receiver is maximized while the heat loss from the receiver to the environment is minimized. Thermal radiation losses can be significant (>7% annual energy loss) with receivers at temperatures above 650C. We present progress toward highly efficient and durable solar selective absorbers (SSAs) intended for operating temperatures from 650C to 1000C. Selective efficiency (?sel) is defined as the energy retained by the absorber, accounting for both absorptance and emittance, relative to the energy incident on the surface. The low emittance layers of multilayer SSAs are binary compounds of refractory metals whose material properties indicate that coatings formed of these materials should be oxidation resistant in air to 800-1200C. On this basis, we initially developed a solar selective coating for parabolic troughs. This development has been successfully extended to meet the absorptance and emittance objectives for the more demanding, high temperature regime. We show advancement in coating materials, processing and designs resulting in the initial attainment of target efficiencies ?sel > 0.91 for proposed tower conditions. Additionally, spectral measurements show that these coatings continue to perform at targeted levels after cycling to temperatures of 1000C in environments of nitrogen and forming gas.

  15. A Single Tower Configuration of the Modular Gamma Box Counter System - 13392

    SciTech Connect (OSTI)

    Morris, K.; Nakazawa, D.; Francalangia, J.; Gonzalez, H.

    2013-07-01

    Canberra's Standard Gamma Box Counter System is designed to perform accurate quantitative assays of gamma emitting nuclides for a wide range of large containers including B-25 crates and ISO shipping containers. Using a modular building-block approach, the system offers tremendous flexibility for a variety of measurement situations with wide ranges of sample activities and throughput requirements, as well as the opportunity to modify the configuration for other applications at a later date. The typical configuration consists of two opposing towers each equipped with two high purity germanium detectors, and an automated container trolley. This paper presents a modified configuration, consisting of a single tower placed inside a measurement trailer with three detector assemblies, allowing for additional vertical segmentation as well as a viewing a container outside the trailer through the trailer wall. An automatic liquid nitrogen fill system is supplied for each of the detectors. The use of a forklift to move the container for horizontal segmentation is accommodated by creating an additional operational and calibration set-up in the NDA 2000 software to allow for the operator to rotate the container and assay the opposite side, achieving the same sensitivity as a comparable two-tower system. This Segmented Gamma Box Counter System retains the core technologies and design features of the standard configuration. The detector assemblies are shielded to minimize interference from environmental and plant background, and are collimated to provide segmentation of the container. The assembly positions can also be modified in height and distance from the container. The ISOCS calibration software provides for a flexible approach to providing the calibrations for a variety of measurement geometries. The NDA 2000 software provides seamless operation with the current configuration, handling the data acquisition and analysis. In this paper, an overview of this system is discussed, along with the measured performance results, calibration methodology and verification, and minimum detectable activity levels. (authors)

  16. High temperature performance of high-efficiency, multi-layer solar selective coatings for tower applications

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Gray, M. H.; Tirawat, R.; Kessinger, K. A.; Ndione, P. F.

    2015-05-01

    The roadmap to next-generation concentrating solar power plants anticipates a progression to central towers with operating temperatures in excess of 650°C. These higher temperatures are required to drive higher power-cycle efficiencies, resulting in lower cost energy. However, these conditions also place a greater burden on the materials making up the receiver. Any novel absorber material developed for next-generation receivers must be stable in air, cost effective, and survive thousands of heating and cooling cycles. The collection efficiency of a power tower plant can be increased if the energy absorbed by the receiver is maximized while the heat loss from themore » receiver to the environment is minimized. Thermal radiation losses can be significant (>7% annual energy loss) with receivers at temperatures above 650°C. We present progress toward highly efficient and durable solar selective absorbers (SSAs) intended for operating temperatures from 650°C to 1000°C. Selective efficiency (ηsel) is defined as the energy retained by the absorber, accounting for both absorptance and emittance, relative to the energy incident on the surface. The low emittance layers of multilayer SSAs are binary compounds of refractory metals whose material properties indicate that coatings formed of these materials should be oxidation resistant in air to 800-1200°C. On this basis, we initially developed a solar selective coating for parabolic troughs. This development has been successfully extended to meet the absorptance and emittance objectives for the more demanding, high temperature regime. We show advancement in coating materials, processing and designs resulting in the initial attainment of target efficiencies ηsel > 0.91 for proposed tower conditions. Additionally, spectral measurements show that these coatings continue to perform at targeted levels after cycling to temperatures of 1000°C in environments of nitrogen and forming gas.« less

  17. High temperature performance of high-efficiency, multi-layer solar selective coatings for tower applications

    SciTech Connect (OSTI)

    Gray, M. H.; Tirawat, R.; Kessinger, K. A.; Ndione, P. F.

    2015-05-01

    The roadmap to next-generation concentrating solar power plants anticipates a progression to central towers with operating temperatures in excess of 650°C. These higher temperatures are required to drive higher power-cycle efficiencies, resulting in lower cost energy. However, these conditions also place a greater burden on the materials making up the receiver. Any novel absorber material developed for next-generation receivers must be stable in air, cost effective, and survive thousands of heating and cooling cycles. The collection efficiency of a power tower plant can be increased if the energy absorbed by the receiver is maximized while the heat loss from the receiver to the environment is minimized. Thermal radiation losses can be significant (>7% annual energy loss) with receivers at temperatures above 650°C. We present progress toward highly efficient and durable solar selective absorbers (SSAs) intended for operating temperatures from 650°C to 1000°C. Selective efficiency (ηsel) is defined as the energy retained by the absorber, accounting for both absorptance and emittance, relative to the energy incident on the surface. The low emittance layers of multilayer SSAs are binary compounds of refractory metals whose material properties indicate that coatings formed of these materials should be oxidation resistant in air to 800-1200°C. On this basis, we initially developed a solar selective coating for parabolic troughs. This development has been successfully extended to meet the absorptance and emittance objectives for the more demanding, high temperature regime. We show advancement in coating materials, processing and designs resulting in the initial attainment of target efficiencies ηsel > 0.91 for proposed tower conditions. Additionally, spectral measurements show that these coatings continue to perform at targeted levels after cycling to temperatures of 1000°C in environments of nitrogen and forming gas.

  18. Comparison of Triton SODAR Data to Meteorological Tower Wind Measurement Data in Hebei Province, China

    SciTech Connect (OSTI)

    Yuechun, Y.; Jixue, W.; Hongfang, W.; Guimin, L.; Bolin, Y.; Scott, G.; Elliott, D.; Kline, D.

    2012-01-01

    With the increased interest in remote sensing of wind information in recent years, it is important to determine the reliability and accuracy of new wind measurement technologies if they are to replace or supplement conventional tower-based measurements. In view of this, HydroChina Corporation and the United States National Renewable Energy Laboratory (NREL) conducted a comparative test near a wind farm in Hebei Province, China. We present the results of an analysis characterizing the measurement performance of a state-of-the-art Sound Detection and Ranging (sodar) device when compared to a traditional tower measurement program. NREL performed the initial analysis of a three-month period and sent the results to HydroChina. When another month of data became available, HydroChina and their consultant Beijing Millenium Engineering Software (MLN) repeated NREL's analysis on the complete data set, also adding sensitivity analysis for temperature, humidity, and wind speed (Section 6). This report presents the results of HydroChina's final analysis of the four-month period.

  19. AmeriFlux US-Skr Shark River Slough (Tower SRS-6) Everglades

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Barr, Jordan G. [Everglades National Park; Fuentes, Jose [Pennsylvania State University

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-Skr Shark River Slough (Tower SRS-6) Everglades. Site Description - The Florida Everglades Shark River Slough Mangrove Forest site is located along the Shark River in the western region of Everglades National Park. Also referred to as site SRS6 of the Florida Coastal Everglades LTER program, freshwater in the mangrove riverine floods the forest floor under a meter of water twice per day. Transgressive discharge of freshwater from the Shark river follows annual rainfall distributions between the wet and dry seasons. Hurricane Wilma struck the site in October of 2005 causing significant damage. The tower was offline until the following October in order to continue temporally consistent measurements. In post-hurricane conditions, ecosystem respiration rates and solar irradiance transfer increased. 2007- 2008 measurements indicate that these factors led to an decline in both annual -NEE and daily NEE from pre-hurricane conditions in 2004-2005.

  20. An evaluation of possible next-generation high temperature molten-salt power towers.

    SciTech Connect (OSTI)

    Kolb, Gregory J.

    2011-12-01

    Since completion of the Solar Two molten-salt power tower demonstration in 1999, the solar industry has been developing initial commercial-scale projects that are 3 to 14 times larger. Like Solar Two, these initial plants will power subcritical steam-Rankine cycles using molten salt with a temperature of 565 C. The main question explored in this study is whether there is significant economic benefit to develop future molten-salt plants that operate at a higher receiver outlet temperature. Higher temperatures would allow the use of supercritical steam cycles that achieve an improved efficiency relative to today's subcritical cycle ({approx}50% versus {approx}42%). The levelized cost of electricity (LCOE) of a 565 C subcritical baseline plant was compared with possible future-generation plants that operate at 600 or 650 C. The analysis suggests that {approx}8% reduction in LCOE can be expected by raising salt temperature to 650 C. However, most of that benefit can be achieved by raising the temperature to only 600 C. Several other important insights regarding possible next-generation power towers were also drawn: (1) the evaluation of receiver-tube materials that are capable of higher fluxes and temperatures, (2) suggested plant reliability improvements based on a detailed evaluation of the Solar Two experience, and (3) a thorough evaluation of analysis uncertainties.

  1. Characteristics study of Transmission Line Mechanical Research Center (TLMRC) wind tower data. Notes on field-wind loading experiments

    SciTech Connect (OSTI)

    Shan, L.

    1992-10-01

    To initiate and develop EPRI`s wind loading research program, an experimental wind tower was erected at the TLMRC site. A number of anemometers were placed at different elevation levels of the wind tower. Strain gages were also mounted on the leg posts of the tower. The purposes of this experiment were to establish the wind characteristics at the TLMRC site, and to gain experience using different types of instrumentation and data acquisition techniques in field-wind loading experiments. Three sets of wind data collected from the TLMRC wind tower were validated and analyzed in this study. Since the characteristics of wind and response data can be described in different terms and by various methods, the study describes the concept, Identifies the focal point, and discusses the results of each method used in this report. In addition, some comments are provided on how to conduct the field-wind loading experiments as well as how to analyze the wind and response data. The results of this study show that: (1) the magnitudes of wind velocity and direction can vary considerably during a short period of time; (2) the mean vertical wind profile does not hold constant as usually assumed; (3) the turbulence intensity and the gust factor increase as the height above ground decreases; (4) the averaging time can greatly influence the results of wind data analysis; (5) although wind contains lime energy beyond 1 Hz, structural responses above 1 Hz can be excited; (6) strong relationships exist between the wind velocity and the responses in the leg posts of the wind tower. System identification, a tool for establishing models of dynamic systems based in observed data, is successfully used in a trial application which estimates the relationship between the wind velocity and the responses in the wind tower.

  2. Nanoparticle modifications of photodefined nanostructures for...

    Office of Scientific and Technical Information (OSTI)

    Country of Publication: United States Language: English Subject: 77 NANOSCIENCE AND NANOTECHNOLOGY; CARBON; ELECTRODES; FABRICATION; MODIFICATIONS; NANOSTRUCTURES; POLYMERS Word ...

  3. WIPP - Information on Proposed Permit Modifications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    WIPP Hazardous Waste Facility Permit RCRA Proposed Permit Modifications (Drafts) Draft Class 2 Permit Modification Request Active Room Ventilation Flow Rate dated February 23, 2016 Draft Class 2 Permit Modification Request Revise the RCRA Contingency Plan and Associated Emergency Response Personnel Training dated February 23, 2016 Fact Sheets Public Notices Please forward comments to the following email address: Draft.ModificationResponse@. These Documents are NOT FINAL and have not been

  4. Energy conservation potential of surface modification technologies

    SciTech Connect (OSTI)

    Le, H.K.; Horne, D.M.; Silberglitt, R.S.

    1985-09-01

    This report assesses the energy conservation impact of surface modification technologies on the metalworking industries. The energy conservation impact of surface modification technologies on the metalworking industries is assessed by estimating their friction and wear tribological sinks and the subsequent reduction in these sinks when surface modified tools are used. Ion implantation, coatings, and laser and electron beam surface modifications are considered.

  5. AMENDMENT OF SOLICITATION/MODIFICATION

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    OF CONTRACT 1.CNRTIDOEPAE1 FI G 4 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE (MD Y) 4. REQUISITONPURC1-ASE REQ NO. 5. PROJECT NO. (ijappiceubc) 277 See Block 16C 6. ISSUED BY CODE 7. ADMINISTERED BY (If ther than Item 6) CODE U.S. Department of Energy Office of River Protection P. 0. Box 450, MIS 1-6-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No. street, county, State and ZiI' code) 9A AMENDMENT OF SOLICITATION NO. Bechtel National, Inc. 9B. DATED 1 'SEE 171AM )) 2435 Stevens

  6. Environmental assessment of air quality, noise and cooling tower drift from the Jersey City Total Energy Demonstration

    SciTech Connect (OSTI)

    Davis, W.T.; Kolb, J.O.

    1980-06-01

    This assessment covers three specific effects from the operation of the Total Energy (TE) demonstration: (1) air quality from combustion emissions of 600 kW diesel engines and auxiliary boilers fueled with No. 2 distillate oil, (2) noise levels from TE equipment operation, (3) cooling tower drift from two, 2220 gpm, forced-draft cooling towers. For the air quality study, measurements were performed to determine both the combustion emission rates and ground-level air quality at the Demonstration site. Stack analysis of NO/sub x/, SO/sub 2/, CO, particulates, and total hydrocarbons characterized emission rates over a range of operating conditions. Ground-level air quality was monitored during two six-week periods during the summer and winter of 1977. The noise study was performed by measuring sound levels in db(A) in the area within approximately 60 m of the CEB. The noise survey investigated the effects on noise distribution of different wind conditions, time of day or night, and condition of doors - open or closed - near the diesel engines in the CEB. In the cooling tower study, drift emission characteristics were measured to quantify the drift emission before and after cleaning of the tower internals to reduce fallout of large drift droplets in the vicinity of the CEB.

  7. AUTOMATED DEAD-END ULTRAFILTRATION FOR ENHANCED SURVEILLANCE OF LEGIONELLA 2 PNEUMOPHILA AND LEGIONELLA SPP. IN COOLING TOWER WATERS

    SciTech Connect (OSTI)

    Brigmon, R.; Leskinen, S.; Kearns, E.; Jones, W.; Miller, R.; Betivas, C.; Kingsley, M.; Lim, D.

    2011-10-10

    Detection of Legionella pneumophila in cooling towers and domestic hot water systems involves concentration by centrifugation or membrane filtration prior to inoculation onto growth media or analysis using techniques such as PCR or immunoassays. The Portable Multi-use Automated Concentration System (PMACS) was designed for concentrating microorganisms from large volumes of water in the field and was assessed for enhancing surveillance of L. pneumophila at the Savannah River Site, SC. PMACS samples (100 L; n = 28) were collected from six towers between August 2010 and April 2011 with grab samples (500 ml; n = 56) being collected before and after each PMACS sample. All samples were analyzed for the presence of L. pneumophila by direct fluorescence immunoassay (DFA) using FITC-labeled monoclonal antibodies targeting serogroups 1, 2, 4 and 6. QPCR was utilized for detection of Legionella spp. in the same samples. Counts of L. pneumophila from DFA and of Legionella spp. from qPCR were normalized to cells/L tower water. Concentrations were similar between grab and PMACS samples collected throughout the study by DFA analysis (P = 0.4461; repeated measures ANOVA). The same trend was observed with qPCR. However, PMACS concentration proved advantageous over membrane filtration by providing larger volume, more representative samples of the cooling tower environment, which led to reduced variability among sampling events and increasing the probability of detection of low level targets. These data highlight the utility of the PMACS for enhanced surveillance of L. pneumophila by providing improved sampling of the cooling tower environment.

  8. Life Cycle Greenhouse Gas Emissions of Trough and Tower Concentrating Solar Power Electricity Generation: Systematic Review and Harmonization

    SciTech Connect (OSTI)

    Burkhardt, J. J.; Heath, G.; Cohen, E.

    2012-04-01

    In reviewing life cycle assessment (LCA) literature of utility-scale concentrating solar power (CSP) systems, this analysis focuses on reducing variability and clarifying the central tendency of published estimates of life cycle greenhouse gas (GHG) emissions through a meta-analytical process called harmonization. From 125 references reviewed, 10 produced 36 independent GHG emissions estimates passing screens for quality and relevance: 19 for parabolic trough (trough) technology and 17 for power tower (tower) technology. The interquartile range (IQR) of published estimates for troughs and towers were 83 and 20 grams of carbon dioxide equivalent per kilowatt-hour (g CO2-eq/kWh),1 respectively; median estimates were 26 and 38 g CO2-eq/kWh for trough and tower, respectively. Two levels of harmonization were applied. Light harmonization reduced variability in published estimates by using consistent values for key parameters pertaining to plant design and performance. The IQR and median were reduced by 87% and 17%, respectively, for troughs. For towers, the IQR and median decreased by 33% and 38%, respectively. Next, five trough LCAs reporting detailed life cycle inventories were identified. The variability and central tendency of their estimates are reduced by 91% and 81%, respectively, after light harmonization. By harmonizing these five estimates to consistent values for global warming intensities of materials and expanding system boundaries to consistently include electricity and auxiliary natural gas combustion, variability is reduced by an additional 32% while central tendency increases by 8%. These harmonized values provide useful starting points for policy makers in evaluating life cycle GHG emissions from CSP projects without the requirement to conduct a full LCA for each new project.

  9. SF-30 Block 14 (Continued) DE-AC27-08 RV14800, Modification 074

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SF-30 Block 14 (Continued) DE-AC27-08 RV14800, Modification 074 Page 2 of 3 1. The purpose of this contract modification is to definitize the remaining $478,204 of ARRA funding obligated to the contract in previous contract change orders. This modification changes the funding source for work that is already priced in the contract and moves FY 2011 base funded scope to ARRA funded scope for two projects that will be partially funded with ARRA funds (previously undefinitized), and partially funded

  10. Mediating Biofuel Complexity through "Mediator" Modification...

    Office of Science (SC) Website

    Mediating Biofuel Complexity through "Mediator" Modification Basic Energy Sciences (BES) ... to more efficient and lower cost routes to high-yield biomass-derived renewable fuels. ...

  11. CXD_4603, Enclosure Modification Project (4603)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Enclosure Modification Project (4603) Y-12 Site Office Oak Ridge, Anderson County, Tennessee The proposed action is to convert the temporary enclosure to a permanent enclosure....

  12. Modifications for Public Comment - Hanford Site

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    MP-14 WIDS Information Hanford Site Waste Management Units Report Hanford Public Involvement Plan Administrative Record (AR) Related Links Modifications for Public Comment...

  13. Simple modification of Compton polarimeter to redirect synchrotron radiation

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Benesch, Jay F.; Franklin, Gregg B.; Quinn, Brian P.; Paschke, Kent D.

    2015-11-30

    Synchrotron radiation produced as an electron beam passes through a bending magnet is a significant source of background in many experiments. Using modeling, we show that simple modifications of the magnet geometry can reduce this background by orders of magnitude in some circumstances. Specifically, we examine possible modifications of the four dipole magnets used in Jefferson Labs Hall A Compton polarimeter chicane. This Compton polarimeter has been a crucial part of experiments with polarized beams and the next generation of experiments will utilize increased beam energies, up to 11 GeV, requiring a corresponding increase in Compton dipole field to 1.5moreT. In consequence, the synchrotron radiation (SR) from the dipole chicane will be greatly increased. Three possible modifications of the chicane dipoles are studied; each design moves about 2% of the integrated bending field to provide a gentle bend in critical regions along the beam trajectory which, in turn, greatly reduces the synchrotron radiation within the acceptance of the Compton polarimeter photon detector. Each of the modifications studied also softens the SR energy spectrum at the detector sufficiently to allow shielding with 5 mm of lead. Simulations show that these designs are each capable of reducing the background signal due to SR by three orders of magnitude. The three designs considered vary in their need for vacuum vessel changes and in their effectiveness.less

  14. Historic American engineering record. Nevada national security site, Bren Tower Complex. Written historical and descriptive data and field records

    SciTech Connect (OSTI)

    Edwards, Susan R.; Goldenberg, Nancy

    2013-08-01

    The BREN (Bare Reactor Experiment, Nevada) Tower Complex is significant for its role in the history of nuclear testing, radiation dosimetry studies, and early field testing of the Strategic Missile Defense System designs. At the time it was built in 1962, the 1,527 ft (465 m) BREN Tower was the tallest structure west of the Mississippi River and exceeded the height of the Empire State Building by 55 ft (17 m). It remains the tallest ever erected specifically for scientific purposes and was designed and built to facilitate the experimental dosimetry studies necessary for the development of accurate radiation dose rates for the survivors of Hiroshima and Nagasaki. The tower was a key component of the Atomic Bomb Casualty Commission’s (ABCC) mission to predict the health effects of radiation exposure. Moved to its current location in 1966, the crucial dosimetry studies continued with Operation HENRE (High Energy Neutron Reactions Experiment). These experiments and the data they generated became the basis for a dosimetry system called the Tentative 1965 Dose or more commonly the T65D model. Used to estimate radiation doses received by individuals, the T65D model was applied until the mid-1980s when it was replaced by a new dosimetry system known as DS86 based on the Monte Carlo method of dose rate calculation. However, the BREN Tower data are still used for verification of the validity of the DS86 model. In addition to its importance in radiation heath effects research, the BREN Tower Complex is also significant for its role in the Brilliant Pebbles research project, a major component of the Strategic Defense Initiative popularly known as the “Star Wars” Initiative. Instigated under the Reagan Administration, the program’s purpose was to develop a system to shield the United States and allies from a ballistic missile attack. The centerpiece of the Strategic Defense System was space-based, kinetic-kill vehicles. In 1991, BREN Tower was used for the tether tests of the Brilliant Pebbles prototype vehicle at the earth’s surface prior to the more costly space testing program. The success of these tests established the Brilliant Pebbles program as an essential component of America’s space-based missile defense system even after the dismantling of the Soviet Union. Data from the Brilliant Pebbles research program continues to inspire current missile defense system research (Independent Working Group 2009).

  15. DE-AC27-10RV15051 Modification A001

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    DE-AC27-10RV15051 Modification A001 Page 2 of 12 The purpose of this change order is to (1) add American Recovery and Reinvestment Act (ARRA) tasks (2) obligate ARRA funding, (3) incorporate applicable ARRA clauses. 1. CHANGE ORDER This change order modification is issued pursuant to contract clause I-75, entitled FAR 52.243-2 - Changes - Cost-Reimbursement (Aug 1987), Alternate I (Apr 1984). Under this authority the contractor is directed to proceed with performance of ARRA tasks as outlined

  16. Session: What have studies of communications towers suggested regarding the impact of guy wires and lights on birds and bats

    SciTech Connect (OSTI)

    Kerlinger, Paul

    2004-09-01

    This session at the Wind Energy and Birds/Bats workshop consisted of one presentation followed by a discussion/question and answer period. The paper ''Wind turbines and Avian Risk: Lessons from Communications Towers'' was given by Paul Kerlinger. The presenter outlined lessons that have been learned from research on communications (not cell) towers and about the impacts of guy wires and lights on birds and bats and how they could be useful to wind energy developers. The paper also provided specific information about a large 'fatality' event that occurred at the Mountaineer, WC wind energy site in May 2003, and a table of Night Migrant Carcass search findings for various wind sites in the US.

  17. ARRA FEMP Technical Assistance -- Federal Aviation Administration Project 209 -- Control Tower and Support Building, Palm Springs, CA

    SciTech Connect (OSTI)

    Arends, J.; Sandusky, William F.

    2010-03-31

    This report represents findings of a design review team that evaluated construction documents (at the 100% level) and operating specifications for a new control tower and support building that will be built in Palm Springs, California by the Federal Aviation Administration (FAA). The focus of the review was to identify measures that could be incorporated into the final design and operating specifications that would result in additional energy savings for the FAA that would not have otherwise occurred.

  18. Structural Design Considerations for Tubular Power Tower Receivers Operating at 650 Degrees C: Preprint

    SciTech Connect (OSTI)

    Neises, T. W.; Wagner, M. J.; Gray, A. K.

    2014-04-01

    Research of advanced power cycles has shown supercritical carbon dioxide power cycles may have thermal efficiency benefits relative to steam cycles at temperatures around 500 - 700 degrees C. To realize these benefits for CSP, it is necessary to increase the maximum outlet temperature of current tower designs. Research at NREL is investigating a concept that uses high-pressure supercritical carbon dioxide as the heat transfer fluid to achieve a 650 degrees C receiver outlet temperature. At these operating conditions, creep becomes an important factor in the design of a tubular receiver and contemporary design assumptions for both solar and traditional boiler applications must be revisited and revised. This paper discusses lessons learned for high-pressure, high-temperature tubular receiver design. An analysis of a simplified receiver tube is discussed, and the results show the limiting stress mechanisms in the tube and the impact on the maximum allowable flux as design parameters vary. Results of this preliminary analysis indicate an underlying trade-off between tube thickness and the maximum allowable flux on the tube. Future work will expand the scope of design variables considered and attempt to optimize the design based on cost and performance metrics.

  19. CONFIGURATION CHANGE PROPOSAL FORM | Department of Energy

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

    CONFIGURATION CHANGE PROPOSAL FORM CONFIGURATION CHANGE PROPOSAL FORM This form is used for sharing information on Domain Name Server (DNS) changes, new requirements, modifications or enhancements within the DOE Headquarters Programmatic and Office Management Areas. Microsoft Office document icon This form is used for sharing information on Domain Name Server (DNS) changes, new requirements, modifications or enhancements within the DOE Headquarters Programmatic and Office Management Areas. More

  20. Firearms Modifications List- June 13, 2012

    Broader source: Energy.gov [DOE]

    This document contains the currently-approved protective force "Firearms Modification List" referred to in Department of Energy Order 473.3, Protection Program Operations. This supersedes any previous versions of this document

  1. Nanoparticle modifications of photodefined nanostructures for energy

    Office of Scientific and Technical Information (OSTI)

    applications. (Technical Report) | SciTech Connect Nanoparticle modifications of photodefined nanostructures for energy applications. Citation Details In-Document Search Title: Nanoparticle modifications of photodefined nanostructures for energy applications. The advancement of materials technology towards the development of novel 3D nanostructures for energy applications has been a long-standing challenge. The purpose of this project was to explore photolithographically defineable pyrolyzed

  2. Modification264 - Signed, 15Mar2012.pdf

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Biofuels From Poplar (Technical Report) | SciTech Connect Modification of Lignin by Protein Cross-linking to Facilitate Production of Biofuels From Poplar Citation Details In-Document Search Title: Modification of Lignin by Protein Cross-linking to Facilitate Production of Biofuels From Poplar The limited supply of fossil fuels and the associated environmental issues associated with their utilization has resulted in much effort put forth to promote renewable resources of energy. Switching to

  3. Incorporating supercritical steam turbines into molten-salt power tower plants : feasibility and performance.

    SciTech Connect (OSTI)

    Pacheco, James Edward; Wolf, Thorsten; Muley, Nishant

    2013-03-01

    Sandia National Laboratories and Siemens Energy, Inc., examined 14 different subcritical and supercritical steam cycles to determine if it is feasible to configure a molten-salt supercritical steam plant that has a capacity in the range of 150 to 200 MWe. The effects of main steam pressure and temperature, final feedwater temperature, and hot salt and cold salt return temperatures were determined on gross and half-net efficiencies. The main steam pressures ranged from 120 bar-a (subcritical) to 260 bar-a (supercritical). Hot salt temperatures of 566 and 600%C2%B0C were evaluated, which resulted in main steam temperatures of 553 and 580%C2%B0C, respectively. Also, the effects of final feedwater temperature (between 260 and 320%C2%B0C) were evaluated, which impacted the cold salt return temperature. The annual energy production and levelized cost of energy (LCOE) were calculated using the System Advisory Model on 165 MWe subcritical plants (baseline and advanced) and the most promising supercritical plants. It was concluded that the supercritical steam plants produced more annual energy than the baseline subcritical steam plant for the same-size heliostat field, receiver, and thermal storage system. Two supercritical steam plants had the highest annual performance and had nearly the same LCOE. Both operated at 230 bar-a main steam pressure. One was designed for a hot salt temperature of 600%C2%B0C and the other 565%C2%B0C. The LCOEs for these plants were about 10% lower than the baseline subcritical plant operating at 120 bar-a main steam pressure and a hot salt temperature of 565%C2%B0C. Based on the results of this study, it appears economically and technically feasible to incorporate supercritical steam turbines in molten-salt power tower plants.

  4. Technology to Facilitate the Use of Impaired Waters in Cooling Towers

    SciTech Connect (OSTI)

    Colborn, Robert

    2012-04-30

    The project goal was to develop an effective silica removal technology and couple that with existing electro-dialysis reversal (EDR) technology to achieve a cost effective treatment for impaired waters to allow for their use in the cooling towers of coal fired power plants. A quantitative target of the program was a 50% reduction in the fresh water withdrawal at a levelized cost of water of $3.90/Kgal. Over the course of the program, a new molybdenum-modified alumina was developed that significantly outperforms existing alumina materials in silica removal both kinetically and thermodynamically. The Langmuir capacity is 0.11g silica/g adsorbent. Moreover, a low cost recycle/regeneration process was discovered to allow for multiple recycles with minimal loss in activity. On the lab scale, five runs were carried out with no drop in performance between the second and fifth run in ability to absorb the silica from water. The Mo-modified alumina was successfully prepared on a multiple kilogram scale and a bench scale model column was used to remove 100 ppm of silica from 400 liters of simulated impaired water. Significant water savings would result from such a process and the regeneration process could be further optimized to reduce water requirements. Current barriers to implementation are the base cost of the adsorbent material and the fine powder form that would lead to back pressure on a large column. If mesoporous materials become more commonly used in other areas and the price drops from volume and process improvements, then our material would also lower in price because the amount of molybdenum needed is low and no additional processing is required. There may well be engineering solutions to the fine powder issue; in a simple concept experiment, we were able to pelletize our material with Boehmite, but lost performance due to a dramatic decrease in surface area.

  5. DOE IDIQ ESPC Contract Modifications | Department of Energy

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

    IDIQ ESPC Contract Modifications DOE IDIQ ESPC Contract Modifications Amendment of Solicitation/Modification of Contract forms for the U.S. Department of Energy (DOE) indefinite-delivery, indefinite-quantity (IDIQ) energy savings performance contract (ESPC). Modifications in these forms apply to all energy service companies (ESCOs). Individual ESCO modifications are not included. The date the modifications were signed are in parentheses below. See the DOE IDIQ ESPC Contract Sample. PDF icon

  6. Modifications of the cell wall of yeasts grown on hexadecane...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Modifications of the cell wall of yeasts grown on hexadecane and under starvation conditions Title Modifications of the cell wall of yeasts grown on hexadecane and under starvation...

  7. Modifications and Optimization of the Organic Rankine Cycle ...

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

    Modifications and Optimization of the Organic Rankine Cycle Modifications and Optimization of the Organic Rankine Cycle organicrankinecycle.pdf More Documents & Publications A...

  8. Acquisition Guide Chapter 43.1, Contract Modifications

    Broader source: Energy.gov [DOE]

    This Policy Flash transmits the new Acquisition Guide Chapter 43.1, Contract Modifications, which provides a consistent approach for processing and executing modifications.

  9. Modifications to WRFs dynamical core to improve the treatment...

    Office of Scientific and Technical Information (OSTI)

    Modifications to WRFs dynamical core to improve the treatment of moisture for large-eddy simulations Citation Details In-Document Search Title: Modifications to WRFs dynamical core ...

  10. Modifications to WRFs dynamical core to improve the treatment...

    Office of Scientific and Technical Information (OSTI)

    Modifications to WRFs dynamical core to improve the treatment of moisture for large-eddy simulations Title: Modifications to WRFs dynamical core to improve the treatment of ...

  11. Controlled Covalent Modification of Epitaxial Single Layer Graphene...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Controlled Covalent Modification of Epitaxial Single Layer Graphene on ... Title: Controlled Covalent Modification of Epitaxial Single Layer Graphene on 6H-SiC ...

  12. Generator modification and characterization of the Ranchero explosive generator

    SciTech Connect (OSTI)

    Oona, Henn; Goforth, James H; Tasker, Douglas G

    2008-01-01

    Magnetic Flux Compression Generators (FCG) have been used as a power source for plasma and metal liner implosions over several decades. We have used the cost effective Ranchero generator to study hydrodynamic effects and instability growth in aluminium liners. Sometimes it is useful to tailor the shape of the current and voltage pulse. Modifications to the geometry can facilitate this task. Changes in the geometrical features of the generator can be used to allow the desired current waveform to be delivered to the load region.

  13. Protein Modifications as Potential Biomarkers in Breast Cancer

    SciTech Connect (OSTI)

    Jin, Hongjun; Zangar, Richard C.

    2009-11-30

    A variety of post-translational protein modifications (PTMs) are known to be altered as a result of cancer development. Thus, these PTMs are potentially useful biomarkers for breast cancer. Mass spectrometry, antibody microarrays and immunohistochemistry techniques have shown promise for identifying changes in PTMs. In this review, we summarize the current literature on PTMs identified in the plasma and tumor tissue of breast-cancer patients or in breast cell lines. We also discuss some of the analytical techniques currently being used to evaluate PTMs.

  14. Major Modification Determination Process Utilized for Proposed Idaho National Laboratory Projects

    SciTech Connect (OSTI)

    Michael A. Lehto, Ph.D.; Boyd D. Christensen

    2008-05-01

    Over the past three years, several new projects with the potential for major modifications to existing facilities have been considered for implementation at the Idaho National Laboratory (INL). These projects were designated to take place in existing nuclear facilities with existing documented safety analyses. 10 CFR 830.206 requires the contractor for a major modification to a Hazard Category 1, 2, or 3 nuclear facility to obtain Department of Energy (DOE) approval for the nuclear facility design criteria to be used for preparation of a preliminary documented safety analysis (PDSA), as well as creation and approval of the PDSA, before the contractor can procure materials or components or begin construction on the project. Given the significant effort and expense of preparation and approval of a PDSA, a major modification determination for new projects is warranted to determine if the rigorous requirements of a major modification are actually required. Furthermore, performing a major modification determination helps to ensure that important safety aspects of a project are appropriately considered prior to modification construction or equipment procurement. The projects considered for major modification status at the INL included: treatment and packaging of unirradiated, sodium-bonded highly enriched uranium (HEU) fuel and miscellaneous casting scrap in the Materials and Fuels Complex (MFC) Fuel Manufacturing Facility (FMF); post irradiation examination of Advance Fuel Cycle Initiative (AFCI) fuel in the MFC Analytical Laboratory (AL); the Advanced Test Reactor (ATR) gas test loop (GTL); and the hydraulic shuttle irradiation system (HSIS) at ATR. The major modification determinations for three of the proposed projects resulted in a negative major modification. On the other hand, the major modification determination for the GTL project concluded that the project would require a major modification. This paper discusses the process, methods, and considerations used by the INL for the four major modification determinations. Three of the four major modification determinations discussed herein were completed using the guidance specified in the draft of DOE STD-1189, “Integration of Safety into the Design Process.” DOE-STD-1189 was released as a draft document in March 2007 and provides guidance for integrating safety considerations into the early design activities for constructing new facilities or making modifications to existing nuclear facilities. The fourth major modification determination was prepared prior to the existence of DOE STD-1189 and was evaluated solely by the definition of a major modification given in 10 CFR 830.206. For all four projects, consideration was given to: • Facility hazard categorization change and material inventory • Facility footprint change with the potential to adversely affect credited safety function • New or changed processes resulting in a change to the safety basis • The use of new technology or equipment not approved for use in the facility • The need for new or revised safety basis controls • Hazards not previously evaluated in the safety basis.

  15. Surface modification to prevent oxide scale spallation

    DOE Patents [OSTI]

    Stephens, Elizabeth V; Sun, Xin; Liu, Wenning; Stevenson, Jeffry W; Surdoval, Wayne; Khaleel, Mohammad A

    2013-07-16

    A surface modification to prevent oxide scale spallation is disclosed. The surface modification includes a ferritic stainless steel substrate having a modified surface. A cross-section of the modified surface exhibits a periodic morphology. The periodic morphology does not exceed a critical buckling length, which is equivalent to the length of a wave attribute observed in the cross section periodic morphology. The modified surface can be created using at least one of the following processes: shot peening, surface blasting and surface grinding. A coating can be applied to the modified surface.

  16. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    9 11. CONTRACT 10 CODE 1PAGE OF PAGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1 I 25 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ . NO . 5 PROJECT NO. (If applicab/e) See Bl ock 1 6C 1 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE 105007 NNSA / Pantex Site Office 05007 NNSA/Pantex Site Office U.S. Department of Energy U.S. Department of Energy Nt SA/ Pantex S it e Offi ce NNSA/Pantex Site Office P.O. Box 30030 P . O . Box 30030

  17. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 11. CONTRACT ID <!;ODE 1 PAGE 1 OF 3 I PAGES 2. AMENDMENT/MODIFICATION NO. I 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE IS. P1ROJECT NO. (If applicable) M528 See Block 16C REQ. NO. 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy National Nuclear Security Administration I Sandia Site Office (MS 0184) P.O. Box 5400 Albuquerque, NM 87185-5400 I 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county,

  18. A new code for the design and analysis of the heliostat field layout for power tower system

    SciTech Connect (OSTI)

    Wei, Xiudong; Lu, Zhenwu; Yu, Weixing; Wang, Zhifeng

    2010-04-15

    A new code for the design and analysis of the heliostat field layout for power tower system is developed. In the new code, a new method for the heliostat field layout is proposed based on the edge ray principle of nonimaging optics. The heliostat field boundary is constrained by the tower height, the receiver tilt angle and size and the heliostat efficiency factor which is the product of the annual cosine efficiency and the annual atmospheric transmission efficiency. With the new method, the heliostat can be placed with a higher efficiency and a faster response speed of the design and optimization can be obtained. A new module for the analysis of the aspherical heliostat is created in the new code. A new toroidal heliostat field is designed and analyzed by using the new code. Compared with the spherical heliostat, the solar image radius of the field is reduced by about 30% by using the toroidal heliostat if the mirror shape and the tracking are ideal. In addition, to maximize the utilization of land, suitable crops can be considered to be planted under heliostats. To evaluate the feasibility of the crop growth, a method for calculating the annual distribution of sunshine duration on the land surface is developed as well. (author)

  19. Modifications to the FCHART/SLR version 2. 0 program

    SciTech Connect (OSTI)

    Hill, J. M.

    1981-07-01

    A number of errors have been detected in the FCHART/SLR computer code as it pertains to the thermal performance of passive solar energy systems. Along with minor coding changes, major revisions in the code have been made to improve the computer models used to predict the effects of overhangs on incident solar radiation and the radiation absorbed in attached sunspaces. Modifications to the code were also made to improve the handling of mullions and to reduce the effort required to describe the placement of overhangs. The theoretical basis of these changes, along with the associated alterations to the code, are given. For the cases examined, the program as modified now agrees to within 15% of published LANL passive system performance correlations. This new code has been designated as Version 2.1 and is presently operational at SSEC.

  20. Surface modification of multilayer graphene using Ga ion irradiation

    SciTech Connect (OSTI)

    Wang, Quan; Shao, Ying; Ge, Daohan; Ren, Naifei; Yang, Qizhi

    2015-04-28

    The effect of Ga ion irradiation intensity on the surface of multilayer graphene was examined. Using Raman spectroscopy, we determined that the irradiation caused defects in the crystal structure of graphene. The density of defects increased with the increase in dwell times. Furthermore, the strain induced by the irradiation changed the crystallite size and the distance between defects. These defects had the effect of doping the multilayer graphene and increasing its work function. The increase in work function was determined using contact potential difference measurements. The surface morphology of the multilayer graphene changed following irradiation as determined by atomic force microscopy. Additionally, the adhesion between the atomic force microscopy tip and sample increased further indicating that the irradiation had caused surface modification, important for devices that incorporate graphene.

  1. Verification survey report of the south waste tank farm training/test tower and hazardous waste storage lockers at the West Valley demonstration project, West Valley, New York

    SciTech Connect (OSTI)

    Weaver, Phyllis C.

    2012-08-29

    A team from ORAU's Independent Environmental Assessment and Verification Program performed verification survey activities on the South Test Tower and four Hazardous Waste Storage Lockers. Scan data collected by ORAU determined that both the alpha and alpha-plus-beta activity was representative of radiological background conditions. The count rate distribution showed no outliers that would be indicative of alpha or alpha-plus-beta count rates in excess of background. It is the opinion of ORAU that independent verification data collected support the site?s conclusions that the South Tower and Lockers sufficiently meet the site criteria for release to recycle and reuse.

  2. Contract Modification Awarded for Legal Support

    Broader source: Energy.gov [DOE]

    Cincinnati - The Department of Energy today awarded a contract modification to A R Biddle & Associates, Inc. of Peachtree City, GA to add scope for the contractor to analyze contract claims that are appealed to the Civilian Board of Contract Appeals (CBCA).

  3. Change Number

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Tank Space Evaluation and Milestone M-46-01 for Ecology concurrence of Additional Tank Acquisition and incorporates those requirements into modifications pursuant to Milestone...

  4. Advanced Design Mixer Pump Tank 18 Design Modifications Summary Report

    SciTech Connect (OSTI)

    Adkins, B.J.

    2002-12-03

    The Westinghouse Savannah River Company (WSRC) is preparing to retrieve high level waste (HLW) from Tank 18 in early FY03 to provide feed for the Defense Waste Processing Facility (DWPF) and to support tank closure in FY04. As part of the Tank 18 project, WSRC will install a single Advanced Design Mixer Pump (ADMP) in the center riser of Tank 18 to mobilize, suspend, and mix radioactive sludge in preparation for transfer to Tank 7. The use of a single ADMP is a change to the current baseline of four (4) standard slurry pumps used during previous waste retrieval campaigns. The ADMP was originally conceived by Hanford and supported by SRS to provide a more reliable and maintainable mixer pump for use throughout the DOE complex. The ADMP underwent an extensive test program at SRS between 1998 and 2002 to assess reliability and hydraulic performance. The ADMP ran for approximately 4,200 hours over the four-year period. A detailed tear down and inspection of the pump following the 4,2 00-hour run revealed that the gas mechanical seals and anti-friction bearings would need to be refurbished/replaced prior to deployment in Tank 18. Design modifications were also needed to meet current Authorization Basis safety requirements. This report documents the modifications made to the ADMP in support of Tank 18 deployment. This report meets the requirements of Tanks Focus Area (TFA) Milestone 3591.4-1, ''Issue Report on Modifications Made to the ADMP,'' contained in Technical Task Plan (TTP) SR16WT51, ''WSRC Retrieval and Closure.''

  5. Validation of Simplified Load Equations through Loads Measurement and Modeling of a Small Horizontal-Axis Wind Turbine Tower; NREL (National Renewable Energy Laboratory)

    SciTech Connect (OSTI)

    Dana, S.; Damiani, R.; vanDam, J.

    2015-05-18

    As part of an ongoing effort to improve the modeling and prediction of small wind turbine dynamics, NREL tested a small horizontal axis wind turbine in the field at the National Wind Technology Center (NWTC). The test turbine was a 2.1-kW downwind machine mounted on an 18-meter multi-section fiberglass composite tower. The tower was instrumented and monitored for approximately 6 months. The collected data were analyzed to assess the turbine and tower loads and further validate the simplified loads equations from the International Electrotechnical Commission (IEC) 61400-2 design standards. Field-measured loads were also compared to the output of an aeroelastic model of the turbine. Ultimate loads at the tower base were assessed using both the simplified design equations and the aeroelastic model output. The simplified design equations in IEC 61400-2 do not accurately model fatigue loads. In this project, we compared fatigue loads as measured in the field, as predicted by the aeroelastic model, and as calculated using the simplified design equations.

  6. Modification of silica gel by organotitanium compounds

    SciTech Connect (OSTI)

    Khrustaleva, E.A.; Abramova, V.I.; Suvorov, A.L.; Fridman, L.I.

    1988-05-10

    The study of the modification of silica gels by various organotitanium compounds (OTC) is of interest in connection with their possible use as specific adsorbents, catalysts in the preparation of filled polymeric materials. The authors studied the modification of silica gel by OTC of different types in order to obtain reactive functional organic groups bound to titanium atoms on its surface. During treatment of silica gel with organotitanium compounds of different types in an organic solvent, these react chemically with the hydroxylic groups of silica gel to form Si-O-Ti groups on the surface, containing organic radicals bound to the titanium atom. In the case of coordinatively unsaturated OTC, increase in the time of interaction of the components on heating and excess OTC lead to partial splitting of the Si-O-Ti bonds, which is not observed for coordinatively saturated OTC.

  7. Restriction/modification polypeptides, polynucleotides, and methods

    DOE Patents [OSTI]

    Westpheling, Janet; Chung, DaeHwan; Huddleston, Jennifer; Farkas, Joel A

    2015-02-24

    The present invention relates to the discovery of a novel restriction/modification system in Caldicellulosiruptor bescii. The discovered restriction enzyme is a HaeIII-like restriction enzyme that possesses a thermophilic activity profile. The restriction/modification system also includes a methyltransferase, M.CbeI, that methylates at least one cytosine residue in the CbeI recognition sequence to m.sup.4C. Thus, the invention provides, in various aspects, isolated CbeI or M.CbeI polypeptides, or biologically active fragments thereof; isolated polynucleotides that encode the CbeI or M.CbeI polypeptides or biologically active fragments thereof, including expression vectors that include such polynucleotide sequences; methods of digesting DNA using a CbeI polypeptide; methods of treating a DNA molecule using a M.CbeI polypeptide; and methods of transforming a Caldicellulosiruptor cell.

  8. Regioselective chemical modification of monoclonal antibodies

    DOE Patents [OSTI]

    Ranadive, G.; Rozenzweig, H.S.; Epperly, M.; Bloomer, W.

    1993-05-04

    A method is presented of selectively modifying an immunoglobulin having at least one Fab region and at least one Fc region. Each region has an isoelectric point where the isoelectric point of the Fab fragment of the immunoglobulin is different from the isoelectric point of the Fc fragment of the immunoglobulin. The method comprises of a modification of the immunoglobulin at a pH between the respective isoelectric points of the Fab and Fc fragments of the immunoglobulin.

  9. Regioselective chemical modification of monoclonal antibodies

    DOE Patents [OSTI]

    Ranadive, Girish; Rosenzweig, Howard S.; Epperly, Michael; Bloomer, William

    1993-01-01

    A method of selectively modifying an immunoglobulin having at least one Fab region and at least one Fc region, each region having an isoelectric point wherein said isoelectric point of the Fab fragment of said immunoglobulin is different than the isoelectric point of the Fc fragment of the immunoglobulin, said method comprising modification of the immunoglobulin at a pH between the respective isoelectric points of the Fab and Fc fragments of the immunoglobulin.

  10. MODIFICATIONS TO THE WIPP PANEL CLOSURE

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    9 Panel Closure ATTACHMENT 1 NMED COMMENTS ITEM 1 - MODIFICATIONS TO THE WIPP PANEL CLOSURE Page 2 of 29 Panel Closure 1-1: PMR Overview, Section 1, "Revision to the PCS Design" This section needs to explicitly explain which Attachment G1 Appendices are being deleted and which new appendices contain relevant information from old appendices. For example, Appendix B appears to include consolidated relevant information from the previous Appendices B through F; the new Appendix A replaces

  11. Surface modification: advantages, techniques, and applications

    SciTech Connect (OSTI)

    Natesan, K.

    2000-03-01

    Adequate performance of materials at elevated temperatures is a potential problem in many systems within the chemical, petroleum, process, and power-generating industries. Degradation of materials occurs because of interaction between the structural material and the exposure environment. These interactions are generally undesired chemical reactions that can lead to accelerated wastage and alter the functional requirements and/or structural integrity of the materials. Therefore, material selection for high-temperature applications must be based not only on a material strength properties but also on resistance to the complex environments prevalent in the anticipated exposure environment. As plants become larger, the satisfactory performance and reliability of components play a greater role in plant availability and economics. However, system designers are becoming increasingly concerned with finding the least expensive material that will satisfactorily perform the design function for the desired service life. This present paper addresses the benefits of surface modification and identified several criteria for selection and application of modified surfaces in the power sector. A brief review is presented on potential methods for modification of surfaces, with the emphasis on coatings. In the final section of the paper, several examples address the requirements of different energy systems and surface modification avenues that have been applied to resolve the issues.

  12. Comment re DOE's NOI re continuation or modification of Price...

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

    NOI re continuation or modification of Price-Anderson Act Comment re DOE's NOI re continuation or modification of Price-Anderson Act Comments of Kerr-McGee Corporation to the ...

  13. DOE to Hold Public Information Meetings on Permit Modifications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Meetings On Permit Modifications CARLSBAD, N.M., May 8, 2001 - The public is invited to comment on two proposed modifications to the Hazardous Waste Facility Permit for the Waste Isolation Pilot Plant (WIPP). Submittal of the proposed modifications to the New Mexico Environment Department (NMED) by the U.S. Department of Energy (DOE) begins a formal review process that includes a 60-day public comment period and two separate public information meetings. The proposed modifications would support

  14. Consequences of proposed changes to Clean Water Act thermal discharge requirements

    SciTech Connect (OSTI)

    Veil, J.A.; Moses, D.O.

    1995-12-31

    This paper summarizes three studies that examined the economic and environmental impact on the power industry of (1) limiting thermal mixing zones to 1,000 feet, and (2) eliminating the Clean Water Act (CWA) {section}316(1) variance. Both of these proposed changes were included in S. 1081, a 1991 Senate bill to reauthorize the CWA. The bill would not have provided for grandfathering plants already using the variance or mixing zones larger than 1000 feet. Each of the two changes to the existing thermal discharge requirements were independently evaluated. Power companies were asked what they would do if these two changes were imposed. Most plants affected by the proposed changes would retrofit cooling towers and some would retrofit diffusers. Assuming that all affected plants would proportionally follow the same options as the surveyed plants, the estimated capital cost of retrofitting cooling towers or diffusers at all affected plants ranges from $21.4 to 24.4 billion. Both cooling towers and diffusers exert a 1%-5.8% energy penalty on a plant`s output. Consequently, the power companies must generate additional power if they install those technologies. The estimated cost of the additional power ranges from $10 to 18.4 billion over 20 years. Generation of the extra power would emit over 8 million tons per year of additional carbon dioxide. Operation of the new cooling towers would cause more than 1.5 million gallons per minute of additional evaporation. Neither the restricted mixing zone size nor the elimination of the {section}316(1) variance was adopted into law. More recent proposed changes to the Clean Water Act have not included either of these provisions, but in the future, other Congresses might attempt to reintroduce these types of changes.

  15. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    , 1. CONTRACT ID CODE I PAGE OF PAGES 1 I 2 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4 . REQUISITION/PURCHASE REQ. NO. 15 PROJECT NO. (ff applicable) 0250 See Block 16C 6. ISSUED BY CODE 05003 7. ADMINISTERED BY (ff other than Item 6) coDE jo5003 NNSA/Los Alamos Site Off ice NNSA/Los Alamos Site Office U.S. Department of Energy U.S. Department of Energy NNSA/Los Alamos Site Office Los Alamos Site Off ice 3747 West Jemez Road 3747 West Jemez Road Los Alamos NM 87544 Los Alamos NM 87544 8.

  16. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    1 OF30 PAGES 2. AMENDMENT/MODIFICATION NO. 13. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. I 5. PROJECT NO. (If applicable) 192 See Block 16 C G. ISSUED BY CODE 05003 7. ADMINISTERED BY (If other than Item 6) CODE 05003 NNSA/Los Alamos Site Office NNSA/Los Alamos Site Office U.S. Department of Energy U.S. Department of Energy Los Alamos Site Office Los Alamos Site Office 3747 West Jemez Road 3747 West Jemez Road Los Alamos, NM 87544 Los Alamos, NM 87544 8. NAME AND ADDRESS OF CONTRACTOR

  17. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    CONTRACT ID CODE j PAGE OF PAGES 1 I 2 2 AMENDMENT/MODIFICATION NO 3. EFFECTIVE DATE 4 REQUISITION/PURCHASE REO NO. 15. PROJECT NO. (II applicable) 220 See Block 16C 6 ISSUED BY CODE 05003 7 ADMINISTERED BY (lfolherthan Item 6) CODE 105003 NNSA/Los Alamos Sile Office NNSA/Los Alamos Site Office u.s. Department of Energy u.s. Department of Energy Los Alamos Site Office Los Alamos Site Office 3747 West Jemez Road 3747 West Jemez Road Los Alamos Los Alamos NM 87544 NM 87544 8. NAME AND ADDRESS OF

  18. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    AMENDMENT/MODIFICATION NO . 3. EFFECTIVE DATE 0232 See Block 16C 6. ISSUED BY CODE 05003 NNSA/Los Al amos Si t e Office U. S . Dep a rtme nt of Ene r gy Los Alamo s Sit e Off i ce 3747 We st Jemez Road Los Al a mos NM 87544 8. NAME AND ADDRESS OF CONTRACTOR (No. , street, county, State and ZIP Code) L A OS ALAMOS NAT I ONAL SECURI TY, ttn : STEVE K. SHOOK P.O . BOX 1663 , M S P222 L OS ALAMOS NM 875450001 CODE 175252894 LLC FACILITY CODE 11 . CONTRACT ID CODE I PAGE OF PAGES 1 I 2 4.

  19. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    Page 1 of 4 PAGES 2. AMENDMENT/MODIFICATION NO. M0538 3. EFFECTIVE DATE See Block 16C 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE U.S. Department of Energy National Nuclear Security Administration Sandia Site Office (MS 0184) P.O. Box 5400 Albuquerque, NM 87185-5400 7. ADMINISTERED BY (If other than Item 6) CODE 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, state, ZIP Code) Sandia Corporation P. O. Box 5800 Albuquerque, NM 87185 9A. AMENDMENT OF

  20. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    AC04-94AL85000 Modification No. M344 Page 2 of 19 1. Section B, Clause B-2, Contract Type and Value is amended as follows: a. Paragraph (b) is revised as follows to set forth the Estimated Cost for FY 2010 and to reflect the Total Estimated Cost, exclusive of Contractor's Fees: Contract Period Estimated Cost October 1, 2009 through September 30, 2010 $ 2,549,525,767 October 1, 2010 through $ To be negotiated annually September 30, 2012 TOTAL through FY10 $31,589,840,857 b. Paragraph (c) is

  1. 2D MODIFICATION OF A CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2 2. AMENDMENT/MODIFICATION NO. M145 3. EFFECTIVE DATE (M/D/Y) See Block 16C 4. REQUISITION/PURCHASE REQ. NO. N/A 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy Office of River Protection P. O. Box 450, MS H6-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP code) 9A. AMENDMENT OF SOLICITATION NO. Bechtel National, Inc. 2435 Stevens Center Place 9B. DATED (SEE ITEM 11) Richland,

  2. 2D MODIFICATION OF A CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    A150 3. EFFECTIVE DATE (M/D/Y) See Block 16C 4. REQUISITION/PURCHASE REQ. NO. 27-09RV14136.004 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy Office of River Protection P. O. Box 450, MS H6-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP code) 9A. AMENDMENT OF SOLICITATION NO. Bechtel National, Inc. 50 Beale St. 9B. DATED (SEE ITEM 11) San Francisco, CA 94105 10A. MODIFICATION

  3. 2D MODIFICATION OF A CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    8 3. EFFECTIVE DATE (M/D/Y) See Block 16C 4. REQUISITION/PURCHASE REQ. NO. 04RV14136.006 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy Office of River Protection P. O. Box 450, MS H6-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP code) 9A. AMENDMENT OF SOLICITATION NO. Bechtel National, Inc. 2435 Stevens Center Place 9B. DATED (SEE ITEM 11) Richland, WA 99352 10A. MODIFICATION

  4. 2D MODIFICATION OF A CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    0 3. EFFECTIVE DATE (M/D/Y) See Block 16C 4. REQUISITION/PURCHASE REQ. NO. 04RV14136.006 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy Office of River Protection P. O. Box 450, MS H6-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP code) 9A. AMENDMENT OF SOLICITATION NO. Bechtel National, Inc. 2435 Stevens Center Place 9B. DATED (SEE ITEM 11) Richland, WA 99352 10A. MODIFICATION

  5. 2D MODIFICATION OF A CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2 3. EFFECTIVE DATE (M/D/Y) See Block 16C 4. REQUISITION/PURCHASE REQ. NO. 04RV14136.006 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy Office of River Protection P. O. Box 450, MS H6-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP code) 9A. AMENDMENT OF SOLICITATION NO. Bechtel National, Inc. 2435 Stevens Center Place 9B. DATED (SEE ITEM 11) Richland, WA 99352 10A. MODIFICATION

  6. 2D MODIFICATION OF A CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    3 3. EFFECTIVE DATE (M/D/Y) See Block 16C 4. REQUISITION/PURCHASE REQ. NO. 04RV14136.009 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy Office of River Protection P. O. Box 450, MS H6-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP code) 9A. AMENDMENT OF SOLICITATION NO. Bechtel National, Inc. 2435 Stevens Center Place 9B. DATED (SEE ITEM 11) Richland, WA 99352 10A. MODIFICATION

  7. 2D MODIFICATION OF A CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    4 3. EFFECTIVE DATE (M/D/Y) See Block 16C 4. REQUISITION/PURCHASE REQ. NO. 05RV14136.001 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy Office of River Protection P. O. Box 450, MS H6-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP code) 9A. AMENDMENT OF SOLICITATION NO. Bechtel National, Inc. 2435 Stevens Center Place 9B. DATED (SEE ITEM 11) Richland, WA 99352 10A. MODIFICATION

  8. 2D MODIFICATION OF A CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    5 3. EFFECTIVE DATE (M/D/Y) See Block 16C 4. REQUISITION/PURCHASE REQ. NO. 05RV14136.002 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy Office of River Protection P. O. Box 450, MS H6-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP code) 9A. AMENDMENT OF SOLICITATION NO. Bechtel National, Inc. 2435 Stevens Center Place 9B. DATED (SEE ITEM 11) Richland, WA 99352 10A. MODIFICATION

  9. 2D MODIFICATION OF A CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    6 3. EFFECTIVE DATE (M/D/Y) See Block 16C 4. REQUISITION/PURCHASE REQ. NO. 05RV14136.003 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy Office of River Protection P. O. Box 450, MS H6-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP code) 9A. AMENDMENT OF SOLICITATION NO. Bechtel National, Inc. 2435 Stevens Center Place 9B. DATED (SEE ITEM 11) Richland, WA 99352 10A. MODIFICATION

  10. 2D MODIFICATION OF A CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    8 3. EFFECTIVE DATE (M/D/Y) See Block 16C 4. REQUISITION/PURCHASE REQ. NO. See Block 14 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy Office of River Protection P. O. Box 450, MS H6-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP code) 9A. AMENDMENT OF SOLICITATION NO. Bechtel National, Inc. 2435 Stevens Center Place 9B. DATED (SEE ITEM 11) Richland, WA 99352 10A. MODIFICATION

  11. 2D MODIFICATION OF A CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    17 2. AMENDMENT/MODIFICATION NO. A015 3. EFFECTIVE DATE (M/D/Y) 04/07/09 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy Office of River Protection P. O. Box 450, MS H6-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP code) 9A. AMENDMENT OF SOLICITATION NO. Washington River Protection Solutions LLC P.O. Box 73 9B. DATED (SEE ITEM 11) 720 Park Blvd

  12. 2D MODIFICATION OF A CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    8 3. EFFECTIVE DATE (M/D/Y) See Block 16C 4. REQUISITION/PURCHASE REQ. NO. 03RV14136.005 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy Office of River Protection P. O. Box 450, MS H6-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP code) 9A. AMENDMENT OF SOLICITATION NO. Bechtel National, Inc. 2435 Stevens Center 9B. DATED (SEE ITEM 11) Richland, WA 99352 10A. MODIFICATION OF

  13. 2D MODIFICATION OF A CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    29 3. EFFECTIVE DATE (M/D/Y) See Block 16C 4. REQUISITION/PURCHASE REQ. NO. AN-NOPR 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) COD U.S. Department of Energy Office of River Protection P. O. Box 450, MS H6-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP code) 9A. AMENDMENT OF SOLICITATION NO. Bechtel National, Inc. 2435 Stevens Center Place 9B. DATED (SEE ITEM 11) Richland, WA 99352 10A. MODIFICATION OF

  14. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    1 PAGE 1 of2 AC PAGES 2. AMENDMENT/MODIFICATION NO. 13. EFFECTIVE DATE 4. REQUISITION/PURCHASE , 5. PROJECT NO (If applicab/e) A193 See Block 16C REQ. NO. NOPR 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than /tern 6) CODE U.S. Department of Energy National Nuclear Security Administration P.O. Box 2050 Oak Ridge, TN 37831 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, state, ZIP Code) Babcock & Wilcox Technical Services Y-12, LLC P.O. Box 2009 MS 8014 Oak Ridge, TN 37831-8014

  15. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    /D CODE 1 PAGE 1 OF 2 PAGES 2. AMENDMENT/MODIFICATION NO. r 3. EFFECTIVE DATE M190 See Block 16C 6.ISSUED BY CODE U.S. Department of Energy National Nuclear Security Administration Service Center Property and M&O Contract Support Department P.O. Box 5400 Albuquerque, NM 87185-5400 4. REQUISITION/PURCHASE 15. PROJECT NO. (If applicable) REQ. NO. 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy National Nuclear Security Administration Manager, Pantex Site Office P.O.

  16. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    I PAGlE 01 PAGES 1 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REO. NO. I' PROJECT NO. (If applicable) 04 94 See Block 16C No PR 6. ISSUED BY CODE 00516 7. ADMINISTERED BY (If other than Item 6) CODE I u.s. Department of Energy ORNL Site Office P.O. Box 2008 Oak Ridge TN 37831 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, state and ZIP Code) ~ 9A. AMENDMENT OF SOLICITATION NO. 0 AK RIDGE ASSOCIATED UNIVERSITIES, INC. P.O. BOX 117 98. DATED (SEE ITEM 11) 0

  17. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. r' PROJECT NO. (If applicable) 235 See Block 16C 6. ISSUED BY CODE 00518 7. ADMINISTERED BY (If other than 110m 6) CODE 100518 Oak Ridge Oak Ridge U.S. Department of Energy U.S. Department of Energy P.O. Box 2001 P.O. Box 2001 Oak Ridge TN 37831 Oak Ridge TN 37831 8. NAME AND ADDRESS OF CONTRACTOR (No .. street. county. State and ZIP Code) (x) 9A. AMENDMENT OF SOLICITATION NO. I - OAK RIDGE ASSOCIATED

  18. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 15. PROJECT NO. (If app/icable) 331 See Block 16C 6. ISSUED BY CODE 00518 7. ADMINISTERED BY (If other than Item 6) CODE 100518 Oak Ridge Oak Ridge U.S. Department of Energy U.S. Department of Energy P.O. Box 2001 P.O. Box 2001 Oak Ridge TN 37831 Oak Ridge TN 37831 8. NAME AND ADDRESS OF CONTRACTOR (No .. slreet, county, State and ZIP Code) (x) 9A. AMENDMENT OF SOLICITATION NO. - OAK RIDGE ASSOCIATED UNIVERSITIES, INC.

  19. AMENDMENT OF SOLICITATIONlMODIFICATION OF CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SOLICITATIONlMODIFICATION OF CONTRACT 11. CONTRACT 10 CODE 1 PAGE OF PAGES 1 I 2 2. AMENDMENTIMODIFICATION NO. 3. EFFECTIVE DATE 4. REOUISITIONJPURCHASE REO. NO. 15. PROJECT NO. (If applicable) 355 See Block 16C 12SC001876 Item 6 6. ISSUED BY CODE 00518 7. ADMINISTERED BY (If other than Item 6) CODE \00518 Oak Ridge Oak Ridge U.S. Department of Energy U.S. Department of Energy P.O. Box 2001 P.O. Box 2001 Oak Ridge TN 37831 Oak Ridge TN 37831 8. NAME AND ADDRESS OF CONTRACTOR (No .* slffHIl.

  20. Reduction of Glass Surface Reflectance by Ion Beam Surface Modification

    SciTech Connect (OSTI)

    Mark Spitzer

    2011-03-11

    This is the final report for DOE contract DE-EE0000590. The purpose of this work was to determine the feasibility of the reduction of the reflection from the front of solar photovoltaic modules. Reflection accounts for a power loss of approximately 4%. A solar module having an area of one square meter with an energy conversion efficiency of 18% generates approximately 180 watts. If reflection loss can be eliminated, the power output can be increased to 187 watts. Since conventional thin-film anti-reflection coatings do not have sufficient environmental stability, we investigated the feasibility of ion beam modification of the glass surface to obtain reduction of reflectance. Our findings are generally applicable to all solar modules that use glass encapsulation, as well as commercial float glass used in windows and other applications. Ion implantation of argon, fluorine, and xenon into commercial low-iron soda lime float glass, standard float glass, and borosilicate glass was studied by implantation, annealing, and measurement of reflectance. The three ions all affected reflectance. The most significant change was obtained by argon implantation into both low-iron and standard soda-lime glass. In this way samples were formed with reflectance lower than can be obtained with a single-layer coatings of magnesium fluoride. Integrated reflectance was reduced from 4% to 1% in low-iron soda lime glass typical of the glass used in solar modules. The reduction of reflectance of borosilicate glass was not as large; however borosilicate glass is not typically used in flat plate solar modules. Unlike conventional semiconductor ion implantation doping, glass reflectance reduction was found to be tolerant to large variations in implant dose, meaning that the process does not require high dopant uniformity. Additionally, glass implantation does not require mass analysis. Simple, high current ion implantation equipment can be developed for this process; however, before the process can be employed on full scale solar modules, equipment must be developed for ion implanting large sheets of glass. A cost analysis shows that the process can be economical. Our finding is that the reduction of reflectance by ion beam surface modification is technically and economically feasible. The public will benefit directly from this work by the improvement of photovoltaic module efficiency, and indirectly by the greater understanding of the modification of glass surfaces by ion beams.

  1. 327 Building liquid waste handling options modification project plan

    SciTech Connect (OSTI)

    Ham, J.E.

    1998-03-28

    This report evaluates the modification options for handling radiological liquid waste (RLW) generated during decontamination and cleanout of the 327 Building. The overall objective of the 327 Facility Stabilization Project is to establish a passively safe and environmentally secure configuration of the 327 Facility. The issue of handling of RLW from the 327 Facility (assuming the 34O Facility is not available to accept the RLW) has been conceptually examined in at least two earlier engineering studies (Parsons 1997a and Hobart l997). Each study identified a similar preferred alternative that included modifying the 327 Facility RLWS handling systems to provide a truck load-out station, either within the confines of the facility or exterior to the facility. The alternatives also maximized the use of existing piping, tanks, instrumentation, controls and other features to minimize costs and physical changes. An issue discussed in each study involved the anticipated volume of the RLW stream. Estimates ranged between 113,550 and 387,500 liters in the earlier studies. During the development of the 324/327 Building Stabilization/Deactivation Project Management Plan, the lower estimate of approximately 113,550 liters was confirmed and has been adopted as the baseline for the 327 Facility RLW stream. The goal of this engineering study is to reevaluate the existing preferred alternative and select a new preferred alternative, if appropriate. Based on the new or confirmed preferred alternative, this study will also provide a conceptual design and cost estimate for required modifications to the 327 Facility to allow removal of RLWS and treatment of the RLW generated during deactivation.

  2. American Recovery and Reinvestment Act (ARRA) FEMP Technical Assistance Federal Aviation Administration Project 209 Control Tower and Support Building Oakland, CA

    SciTech Connect (OSTI)

    Arends, J.; Sandusky, William F.

    2010-03-01

    This report represents findings of a design review team that evaluated construction documents (at the 70% level) and operating specifications for a new control tower and support building that will be build at Oakland, California by the Federal Aviation Administration (FAA). The focus of the review was to identify measures that could be incorporated into the final design and operating specification that would result in additional energy savings for the FAA that would not have otherwise occurred.

  3. American Recovery and Reinvestment Act (ARRA) FEMP Technical Assistance Federal Aviation Administration Project 209 - Control Tower and Support Building, Las Vegas, NV

    SciTech Connect (OSTI)

    Arends, J.; Sandusky, William F.

    2010-03-31

    This report represents findings of a design review team that evaluated construction documents (at the 70% level) and operating specifications for a new control tower and support building that will be built in Las Vegas, Nevada by the Federal Aviation Administration (FAA). The focus of the review was to identify measures that could be incorporated into the final design and operating specification that would result in additional energy savings for the FAA that would not have otherwise occurred.

  4. UniTech Task Order Modifications - DT0010421 - Hanford Site

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    UniTech Task Order Modifications - DT0010421 DOE-RL Contracts/Procurements RL Contracts & Procurements Home Prime Contracts Current Solicitations Other Sources DOE RL Contracting Officers DOE RL Contracting Officer Representatives UniTech Task Order Modifications - DT0010421 Email Email Page | Print Print Page |Text Increase Font Size Decrease Font Size 0002 The purpose of this modification is to provide $200,000.00 of incremental funding for the base period, for line item 00001 MSA, PRC,

  5. DOE to Hold Public Information Meetings On Proposed Permit Modification

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Meeting On Proposed Permit Modification CARLSBAD, N.M., January 31, 2001 - The public is invited to comment on a proposed modification to the Hazardous Waste Facility Permit for the Waste Isolation Pilot Plant (WIPP). Submittal of the proposed modification to the New Mexico Environment Department (NMED) by the U.S. Department of Energy (DOE) begins a formal review process that includes a 60-day public comment period and a public information meeting. In its request, DOE proposes alternative

  6. DOE to Hold Public Information Meetings on Requested Permit Modifications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Requested Permit Modifications CARLSBAD, N.M., March 15, 2001 -- The public is invited to comment on requested modifications to the Hazardous Waste Facility Permit for the Waste Isolation Pilot Plant (WIPP). Submittal of the proposed modification request to the New Mexico Environment Department (NMED) by the U.S. Department of Energy (DOE) begins a formal review process that includes a 60-day public comment period and public information meetings. In its submittal, DOE requests five permit

  7. Diverse and divergent protein post-translational modifications in two

    Office of Scientific and Technical Information (OSTI)

    growth stages of a natural microbial community (Journal Article) | SciTech Connect Diverse and divergent protein post-translational modifications in two growth stages of a natural microbial community Citation Details In-Document Search Title: Diverse and divergent protein post-translational modifications in two growth stages of a natural microbial community Detailed characterization of posttranslational modifications (PTMs) of proteins in microbial communities remains a significant

  8. Pnp gene modification for improved xylose utilization in Zymomonas

    DOE Patents [OSTI]

    Caimi, Perry G G; Qi, Min; Tao, Luan; Viitanen, Paul V; Yang, Jianjun

    2014-12-16

    The endogenous pnp gene encoding polynucleotide phosphorylase in the Zymomonas genome was identified as a target for modification to provide improved xylose utilizing cells for ethanol production. The cells are in addition genetically modified to have increased expression of ribose-5-phosphate isomerase (RPI) activity, as compared to cells without this genetic modification, and are not limited in xylose isomerase activity in the absence of the pnp modification.

  9. Modification of Lignin Content of Plant Cell Walls - Energy Innovation...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Return to Search Modification of Lignin Content of Plant Cell Walls Brookhaven National ... methyltransferases to reduce the lignin content and cross-linking in plant cell walls. ...

  10. Modifications to the VV PHTS RELAP5 Model (Technical Report)...

    Office of Scientific and Technical Information (OSTI)

    Country of Publication: United States Language: English Subject: 42 ENGINEERING; 97 MATHEMATICAL METHODS AND COMPUTING; CONTROL SYSTEMS; COOLANTS; HEAT TRANSFER; MODIFICATIONS;...

  11. Microstructural Modification of a Cast Iron by Magnetic Field Processing

    SciTech Connect (OSTI)

    Kenik, Edward A [ORNL; Ludtka, Gail Mackiewicz- [ORNL; Ludtka, Gerard Michael [ORNL; Wilgen, John B [ORNL; Kisner, Roger A [ORNL

    2010-01-01

    The current study deals with the microstructural modification of a nodular cast iron during solidification under the influence of high magnetic fields (up to 18 tesla).

  12. Modification of structure and magnetic anisotropy of epitaxial...

    Office of Scientific and Technical Information (OSTI)

    films by hydrogen reduction Citation Details In-Document Search Title: Modification of structure and magnetic anisotropy of epitaxial CoFeO films by hydrogen reduction ...

  13. Modifications to WRF's dynamical core to improve the treatment...

    Office of Scientific and Technical Information (OSTI)

    dynamical core to improve the treatment of moisture for large--eddy simulations Citation Details In-Document Search Title: Modifications to WRF's dynamical core to improve the ...

  14. Surface Modification Agents Increase Safety, Security of Lithium...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Surface Modification Agents Increase Safety, Security of Lithium-Ion Batteries New Process to Modify the Surface of the Active Material Used in Lithium-Ion Batteries Argonne ...

  15. Surface Modification Agents for Lithium-Ion Batteries | Argonne...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Surface Modification Agents for Lithium-Ion Batteries Technology available for licensing: ... and security of batteries Substantially reduces power fade and potential for explosions. ...

  16. A Multi-tower Measurement Network Estimate of California's Methane Emissions

    SciTech Connect (OSTI)

    Jeong, Seongeun; Hsu, Ying-Kuang; Andrews, Arlyn E.; Bianco, Laura; Vaca, Patrick; Wilczak, James M.; Fischer, Marc L.

    2013-12-02

    We present an analysis of methane (CH{sub 4}) emissions using atmospheric observations from five sites in California’s Central Valley across different seasons (September 2010 to June 2011). CH{sub 4} emissions for spatial regions and source sectors are estimated by comparing measured CH{sub 4} mixing ratios with transport model (WRF-STILT) predictions based on two 0.1 degree CH{sub 4} (seasonally varying “California-specific” (CALGEM) and a static global (EDGAR42)) prior emission models. Region-specific Bayesian analyses indicate that for California’s Central Valley the CALGEM- and EDGAR42-based inversions provide consistent annual total CH{sub 4} emissions (32.87±2.09 vs. 31.60±2.17 Tg CO{sub 2}eq yr{sup -1}; 68% C.I., assuming uncorrelated errors between regions). Summing across all regions of California, optimized CH{sub 4} emissions are only marginally consistent between CALGEM- and EDGAR42-based inversions (48.35±6.47 vs. 64.97±11.85 Tg CO{sub 2}eq), because emissions from coastal urban regions (where landfill and natural gas emissions are much higher in EDGAR than CALGEM) are not strongly constrained by the measurements. Combining our results with those from a recent study of the South Coast air basin narrows the range of estimates to 43 – 57 Tg CO{sub 2}eq yr{sup -1} (1.3 - 1.8 times higher than the current state inventory). These results suggest that the combination of rural and urban measurements will be necessary to verify future changes in California’s total CH{sub 4} emissions.

  17. Property:Modification date | Open Energy Information

    Open Energy Info (EERE)

    Program on Climate Change SUMMARY (english).pdf + 27 September 2010 14:41:51 + - -ref- NETL - Asia Pacific Partnership on Clean Development & Climate.GIF + 3 December 2009...

  18. Contract Number DE-AC27-08RV14800 Continuation Page, Modification 360

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Number DE-AC27-08RV14800 Continuation Page, Modification 360 Page 2 of 4 The following changes are hereby incorporated into the contract under the authority of Federal Acquisition Regulation (FAR) 52.243-2 Changes-Cost Reimbursement, at no additional cost to the Government. 1. Update Contract Section H-15(f), Key Personnel for this Contract, to update the list as follows: FROM: Name Position Mr. Lyden David Olson TOC Project Manager Mr. Robert E. Wilkinson Manager, ESH&Q Mr. Doug Greenwell

  19. Acoustic Imaging Evaluation of Juvenile Salmonid Behavior in the Immediate Forebay of the Water Temperature Control Tower at Cougar Dam, 2010

    SciTech Connect (OSTI)

    Khan, Fenton; Johnson, Gary E.; Royer, Ida M.; Phillips, Nathan RJ; Hughes, James S.; Fischer, Eric S.; Ploskey, Gene R.

    2011-10-01

    This report presents the results of an evaluation of juvenile Chinook salmonid (Oncorhynchus tshawytscha) behavior in the immediate forebay of the Water Temperature Control (WTC) tower at Cougar Dam in 2010. The study was conducted by the Pacific Northwest National Laboratory for the U.S. Army Corps of Engineers. The overall goal of the study was to characterize juvenile salmonid behavior and movement patterns in the immediate forebay of the WTC tower for fisheries resource managers to use to make decisions on bioengineering designs for long-term structures and/or operations to facilitate safe downstream passage for juvenile salmonids. We collected acoustic imaging (Dual-Frequency Identification Sonar; DIDSON) data from February 1, 2010 through January 31, 2011 to evaluate juvenile salmonid behavior year-round in the immediate forebay surface layer of the WTC tower (within 20 m, depth 0-5 m). From October 28, 2010 through January 31, 2011 a BlueView acoustic camera was also deployed in an attempt to determine its usefulness for future studies as well as augment the DIDSON data. For the DIDSON data, we processed a total of 35 separate 24-h periods systematically covering every other week in the 12-month study. Two different 24-hour periods were processed for the BlueView data for the feasibility study. Juvenile salmonids were present in the immediate forebay of the WTC tower throughout 2010. The juvenile salmonid abundance index was low in the spring (<200 fish per sample-day), began increasing in late April and peaked in mid-May. Fish abundance index began decreasing in early June and remained low in the summer months. Fish abundance increased again in the fall, starting in October, and peaked on November 8-9. A second peak occurred on December 22. Afterwards, abundance was low for the rest of the study (through January 2011). Average fish length for juvenile salmonids during early spring 2010 was 214 {+-} 86 mm (standard deviation). From May through early November, average fish length remained relatively consistent (132 {+-} 39 mm), after which average lengths increased to 294 {+-} 145 mm for mid-November though early December. Fish behavior analysis indicates milling in front of the intake tower was the most common behavior observed throughout the study period (>50% of total fish events). The next most common movement patterns were fish traversing along the front of the tower, east-to-west and west-to-east. The proportion of fish events seen moving into (forebay to tower) or out of (tower to forebay) the tower was generally low throughout the spring, summer, and early fall for both directions combined. From mid-December 2010 through the end of the study, the combined proportions of fish moving into and out of the tower were higher than previous months of this study. Schooling behavior was most distinct in the spring from late April through mid-June. Schooling events were present in 30 - 96% of the fish events during that period, with a peak in mid-May. Schooling events were also present in the summer, but at lower numbers. Diel distributions for schooling fish during spring, fall, and winter months indicate schooling was concentrated during daylight hours. No schooling was observed at night. Predator activity was observed during late spring, when fish abundance and schooling were highest for the year, and again in the fall months when fish events increased from a summer low. No predator activity was observed in the summer, and little activity occurred during the winter months. For the two days of BlueView data analyzed for vertical distribution in the forebay, a majority of fish (>50%) were present in the middle of the water column (10 - 20 m deep). Between 20 and 41 % of total fish abundance were found in the bottom of the water column (20 - 30 m deep). Few fish were observed in the top 10 m of the water column.

  20. CS Chang

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    CS Chang CS Chang FES Requirements Worksheet 1.1. Project Information - Center for Plasma Edge Simulation Document Prepared By CS Chang Project Title Center for Plasma Edge...

  1. American Recovery and Reinvestment Act (ARRA) FEMP Technical Assistance Federal Aviation Administration Project 209 Control Tower and Support Building, Reno, Nevada

    SciTech Connect (OSTI)

    Arends, J.; Sandusky, William F.

    2010-06-30

    Pacific Northwest National Laboratory (PNNL) and Redhorse Corporation (Redhorse) conducted an energy audit on the Federal Aviation Administration (FAA) control tower and base building in Reno, Nevada. This report presents the findings of the energy audit team that evaluated construction documents and operating specifications (at the 100% level) and completed a site visit. The focus of the review was to identify measures that could be incorporated into the final design and operating specifications that would result in additional energy savings for the FAA that would not have otherwise occurred.

  2. American Recovery and Reinvestment Act (ARRA) - FEMP Technical Assistance - Federal Aviation Administration - Project 209 - Control Tower and Support Building, Boise, Idaho

    SciTech Connect (OSTI)

    Arends, J.; Sandusky, William F.

    2010-06-28

    This report documents an energy audit performed by Pacific Northwest National Laboratory (PNNL) and Redhorse Corporation (Redhorse) conducted on the Federal Aviation Administration (FAA) control tower and base building in Boise, Idaho. This report presents findings of the energy audit team that evaluated construction documents and operating specifications (at the 100% level) followed by a site visit of the facility under construction. The focus of the review was to identify measures that could be incorporated into the final design and operating specifications that would result in additional energy savings for FAA that would not have otherwise occurred.

  3. Effects of arsenic on modification of promyelocytic leukemia (PML): PML responds to low levels of arsenite

    SciTech Connect (OSTI)

    Hirano, Seishiro; Watanabe, Takayuki; Kobayashi, Yayoi

    2013-12-15

    Inorganic arsenite (iAs{sup 3+}) is a two-edged sword. iAs{sup 3+} is a well-known human carcinogen; nevertheless, it has been used as a therapeutic drug for acute promyelocytic leukemia (APL), which is caused by a fusion protein comprising retinoic acid receptor-? and promyelocytic leukemia (PML). PML, a nuclear transcription factor, has a RING finger domain with densely positioned cysteine residues. To examine PML-modulated cellular responses to iAs{sup 3+}, CHO-K1 and HEK293 cells were each used to establish cell lines that expressed ectopic human PML. Overexpression of PML increased susceptibility to iAs{sup 3+} in CHO-K1 cells, but not in HEK293 cells. Exposure of PML-transfected cells to iAs{sup 3+} caused PML to change from a soluble form to less soluble forms, and this modification of PML was observable even with just 0.1 ?M iAs{sup 3+} (7.5 ppb). Western blot and immunofluorescent microscopic analyses revealed that the biochemical changes of PML were caused at least in part by conjugation with small ubiquitin-like modifier proteins (SUMOylation). A luciferase reporter gene was used to investigate whether modification of PML was caused by oxidative stress or activation of antioxidant response element (ARE) in CHO-K1 cells. Modification of PML protein occurred faster than activation of the ARE in response to iAs{sup 3+}, suggesting that PML was not modified as a consequence of oxidative stress-induced ARE activation. - Highlights: PML was found in nuclear microspecles in response to arsenite. Arsenite triggers SUMOylation of PML. Arsenite modifies PML at as low as 0.1 ?M. Modification of PML is not caused by ARE activation.

  4. Selective posttranslational modification of phage-displayed polypeptides

    DOE Patents [OSTI]

    Tsao, Meng-Lin; Tian, Feng; Schultz, Peter

    2013-02-05

    The invention relates to posttranslational modification of phage-displayed polypeptides. These displayed polypeptides comprise at least one unnatural amino acid, e.g., an aryl-azide amino acid such as p-azido-L-phenylalanine, or an alkynyl-amino acid such as para-propargyloxyphenylalanine, which are incorporated into the phage-displayed fusion polypeptide at a selected position by using an in vivo orthogonal translation system comprising a suitable orthogonal aminoacyl-tRNA synthetase and a suitable orthogonal tRNA species. These unnatural amino acids advantageously provide targets for posttranslational modifications such as azide-alkyne [3+2]cycloaddition reactions and Staudinger modifications.

  5. Selective posttranslational modification of phage-displayed polypeptides

    DOE Patents [OSTI]

    Tsao, Meng-Lin; Tian, Feng; Schultz, Peter

    2013-11-19

    The invention relates to posttranslational modification of phage-displayed polypeptides. These displayed polypeptides comprise at least one unnatural amino acid, e.g., an aryl-azide amino acid such as p-azido-L-phenylalanine, or an alkynyl-amino acid such as para-propargyloxyphenylalanine, which are incorporated into the phage-displayed fusion polypeptide at a selected position by using an in vivo orthogonal translation system comprising a suitable orthogonal aminoacyl-tRNA synthetase and a suitable orthogonal tRNA species. These unnatural amino acids advantageously provide targets for posttranslational modifications such as azide-alkyne [3+2] cycloaddition reactions and Staudinger modifications.

  6. Technological modifications in the nitrogen oxides tradable permit program

    SciTech Connect (OSTI)

    Linn, J.

    2008-07-01

    Tradable permit programs allow firms greater flexibility in reducing emissions than command-and-control regulations and encourage firms to use low cost abatement options, including small-scale modifications to capital equipment. This paper shows that firms have extensively modified capital equipment in the Nitrogen Oxides Budget Trading Program, which covers power plants in the eastern United States. The empirical strategy uses geographic and temporal features of the program to estimate counterfactual emissions, finding that modifications have reduced emission rates by approximately 10-15 percent. The modifications would not have occurred under command-and-control regulation and have reduced regulatory costs.

  7. Power Towers for Utilities

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel ... SubTER Carbon Sequestration Program Leadership EnergyWater Nexus EnergyWater History ...

  8. TRAC Code Modifications Made for APT Blanket Safety Analyses

    SciTech Connect (OSTI)

    Hamm, L.L.

    1998-10-07

    This report provides documentation of the necessary source code modifications made to the TRAC-PF1/MOD2 code version 5.4.28a developed at Los Alamos National Laboratory.

  9. Modifications and Optimization of the Organic Rankine Cycle | Department of

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

    Energy Modifications and Optimization of the Organic Rankine Cycle Modifications and Optimization of the Organic Rankine Cycle PDF icon organic_rankine_cycle.pdf More Documents & Publications A Quantum Leap for Heavy-Duty Truck Engine Efficiency - Hybrid Power System of Diesel and WHR-ORC Engines High Efficiency Engine Systems Development and Evaluation Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Caterpillar, Inc., June 2011

  10. DOE to Hold Public Information Meetings On Proposed Permit Modification

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    December 14, 2000 - The public is invited to comment on a proposed modification to the Hazardous Waste Facility Permit for the Waste Isolation Pilot Plant (WIPP). Submittal of the proposed modification to the New Mexico Environment Department (NMED) by the U.S. Department of Energy (DOE) begins a formal review process that includes a 60-day public comment period and two separate public information meetings next month. In its request, DOE proposes to modify requirements for Drum Age Criteria

  11. DOE to Hold Public Information Meetings On Proposed Permit Modification

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    July 26, 2000 - The public is invited to comment on a proposed modification to the Hazardous Waste Facility Permit for the Waste Isolation Pilot Plant (WIPP). Submittal of the proposed modification to the New Mexico Environment Department (NMED) by the U.S. Department of Energy (DOE) begins a formal review process that includes a 60-day public comment period and two separate public information meetings. In its request, DOE proposes to increase the aboveground storage capacity at WIPP by 25

  12. Effects of Surface Modification Conditions on Hydrophobicity of

    Office of Scientific and Technical Information (OSTI)

    Silica-based Coating Additives (Conference) | SciTech Connect Conference: Effects of Surface Modification Conditions on Hydrophobicity of Silica-based Coating Additives Citation Details In-Document Search Title: Effects of Surface Modification Conditions on Hydrophobicity of Silica-based Coating Additives Superhydrophobic silica (SHS) powders are being evaluated as a potential additive to the polyurethane topcoats used in Chemical Agent Resistant Coating (CARC) systems, with the goal of

  13. Life Cycle Environmental Impacts Resulting from the Manufacture of the Heliostat Field for a Reference Power Tower Design in the United States: Preprint

    SciTech Connect (OSTI)

    Heath, G.; Burkhardt, J.; Turchi, C.

    2012-10-01

    Life cycle assessment (LCA) is recognized as a useful analytical approach for quantifying environmental impacts of renewable energy technologies, including concentrating solar power (CSP). An LCA accounts for impacts from all stages in the development, operation, and decommissioning of a CSP plant, including such upstream stages as the extraction of raw materials used in system components, manufacturing of those components, and construction of the plant. The National Renewable Energy Laboratory is conducting a series of LCA studies for various CSP technologies. This paper contributes to a thorough LCA of a 100 MWnet molten salt power tower CSP plant by estimating the environmental impacts resulting from the manufacture of heliostats. Three life cycle metrics are evaluated: greenhouse gas emissions, water consumption, and cumulative energy demand. The heliostat under consideration (the 148 m2 Advanced Thermal Systems heliostat) emits 5,300 kg CO2eq, consumes 274 m3 of water, and requires 159,000 MJeq during its manufacture. Future work will incorporate the results from this study into the LCA model used to estimate the life cycle impacts of the entire 100 MWnet power tower CSP plant.

  14. Acoustic Imaging Evaluation of Juvenile Salmonid Behavior in the Immediate Forebay of the Water Temperature Control Tower at Cougar Dam, 2010

    SciTech Connect (OSTI)

    Khan, Fenton; Johnson, Gary E.; Royer, Ida M.; Phillips, Nathan RJ; Hughes, James S.; Fischer, Eric S.; Ham, Kenneth D.; Ploskey, Gene R.

    2012-04-01

    This report presents the results of an evaluation of juvenile Chinook salmon (Oncorhynchus tshawytscha) behavior at Cougar Dam on the south fork of the McKenzie River in Oregon in 2010. The study was conducted by the Pacific Northwest National Laboratory for the U.S. Army Corps of Engineers (USACE). The overall goal of the study was to characterize juvenile salmonid behavior and movement patterns in the immediate forebay of the Water Temperature Control (WTC) tower of the dam for USACE and fisheries resource managers use in making decisions about bioengineering designs for long-term structures and/or operations to facilitate safe downstream passage for juvenile salmonids. We collected acoustic imaging (Dual-Frequency Identification Sonar; DIDSON) data from March 1, 2010, through January 31, 2011. Juvenile salmonids (hereafter, called 'fish') were present in the immediate forebay of the WTC tower throughout the study. Fish abundance index was low in early spring (<200 fish per sample-day), increased in late April, and peaked on May 19 (6,039 fish). A second peak was observed on June 6 (2904 fish). Fish abundance index decreased in early June and remained low in the summer months (<100 fish per sample-day). During the fall and winter, fish numbers varied with a peak on November 10 (1881 fish) and a minimum on December 7 (12 fish). A second, smaller, peak occurred on December 22 (607 fish). A univariate statistical analysis indicated fish abundance index (log10-transformed) was significantly (P<0.05) positively correlated with forebay elevation, velocity over the WTC tower intake gate weirs, and river flows into the reservoir. A subsequent multiple regression analysis resulted in a model (R2=0.70) predicting fish abundance (log-transformed index values) using two independent variables of mean forebay elevation and the log10 of the forebay elevation range. From the approximate fish length measurements made using the DIDSON imaging software, the average fish length during early spring 2010 was 214 {+-} 86 mm (standard deviation). From May through early November, the average fish length remained relatively consistent (132 {+-} 54 mm), after which average lengths increased to 295 {+-} 148 mm for mid-November though early December. From mid-December through January the average fish length decreased to 151 {+-} 76 mm. Milling in front of the WTC tower was the most common fish behavior observed throughout the study period. Traversing along the front of the tower, east-to-west and west-to-east, was the next common behavior. The percentage of fish events showing movement from the forebay to the tower or from the tower to the forebay was generally low throughout the spring, summer, and early fall (0 to 30% for both directions combined, March through early November). From mid-November 2010 through the end of the study (January 31, 2011), the combined percentages of fish moving into and out of the tower were higher (25 to 70%) than during previous months of the study. Schooling behavior was most distinct in the spring. Schooling events were present in 30 to 96% of the fish events during that period, with a peak on May 19. Schooling events were also present in the summer, but at lower numbers. With the exception of some schooling in mid-December, few to no schooling events were observed in the fall and winter months. Diel distributions for schooling fish during spring and fall months indicate schooling was concentrated during daylight hours and no schooling was observed at night. However, in December, schooling occurred at night, after midnight, and during daylight hours. Predator activity, most likely bull trout or rainbow trout according to a USACE biologist, was observed during late spring, when fish abundance index and schooling were highest for the year, and again in the fall months when fish events increased from a summer low. No predator activity was observed in the summer, and little activity occurred during the winter months.

  15. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    1 PAGE OF PAGES 2 of 8 CONTRACT SPECIALIST MARIA D. VASQUEZ United States Department of Energy NNSA Non-M&O Contracting Operations NA-APM-12 Attn: Maria D. Vasquez, Bldg 388 P. O. Box 5400 Albuquerque, NM 87185-5400 Phone: 505-845-4880 EMail: maria.vasquez@nnsa.doe.gov SCHEDULE DE-SOL-0008449 000001 PAGE 3 OF 8 AMENDMENT 000001 The purpose of Amendment 000001 to solicitation DE-SOL-0008449 is to: 1) Revise Standard Form (SF) 33 to change proposal due date and number of pages noted in Section

  16. Tank Operations Contract No. DE-A C27-08RV14800 Modification

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Modification: The purpose of this modification is to revise Section J.4, Performance and Evaluation Measurement Plan (PEMP) to incorporate an additional performance measure under...

  17. The Environmental Assessment Management modification of CADET

    Energy Science and Technology Software Center (OSTI)

    1996-05-01

    The original CADET system (finalized in September 1995 as version 1.3) is a data collection and transfer system developed for the Headquarters Air Force Space Command (HQAFSPC) Environmental Compliance Assessment and Management Program (ECAMP). The system was designed as a tool for ECAMP evaluators to use to enter compliance related data while in the field and to subsequently store, modify, sort, query, and print the data and to electronically transfer the data into the Airmore » Force''s Work Information Management System Environmental Subsystem (WIMSES). The original CADET system was designed to match the database structure of the WIMSES ECAMP module that came on-line in 1992. In June 1995, the Department of Defense issued The Environmental Assessment Management (TEAM) Guide and ECAMP Supplement to the TEAM Guide. These included changes to the type and amount of data collected during an ECAMP assessment. The WIMSES database structure was not modified to match the TEAM Guide; however, the need for collecting and storing the ECAMP data remained. The HQAFSC decided to modify the CADET system to incorporate the changes specified in the ECAMP Supplement and to convert the system from simply a data entry and transfer tool to a data entry and storage system to manage ECAMP findings in lieu of the WIMSES ECAMP module. The revised software is designated as version 2.0 and nicknamed TEAM CADET to distinguish it from the original CADET system.« less

  18. Shell seeks modifications to Mosconi sale

    SciTech Connect (OSTI)

    Chynoweth, E.

    1993-01-06

    Privatization of Argentina's Petroquimica General Mosconi (PGM; Buenos Aires) got under way at the end of last years with three companies submitting technical bids. The interested parties are Shell Compania Argentina de Petroleo SA, Diamond Shamrock, and Panam - a group of local companies including Perez Companc, Laboratorios Phoenix, and Quitral. The technical bids include terms of reference and plans for PGM. Shell has sent a letter to the minister in charge of privatization saying it would not present its economic bid, due January 28, unless changes are made in the sale concerning feedstock supply contracts with state oil group YPF. Shell is concerned about the impact of YPF, which supplies PGM most feedstocks. Tender conditions state YPF will retain 30% of PGM, which will be renamed Petroquimica Platense, and will be the exclusive supplier of feestocks and one of the main buyers of product. Government authorities say no decision has been taken relating to Shell's request to change the contract, but they are reviewing the situation. Other bidders made no objections about the proposed conditions. The government is selling 64% of PGM, YPF will retain 30%, and the remainder will go to the workforce.

  19. Change Number

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Plateau 376-7435 Class of Change I - Signatories X II - Executive Manager III - Project Manager Change Title Modify Tri-Party Agreement Milestone Series M-015 in...

  20. Change Number

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Plateau 376-7435 Class of Change X I - Signatories II - Executive Manager III - Project Manager Change Title Modify Tri-Party Agreement Milestone Series M-020 in...

  1. Contract No. DE-AC05-06OR23100, Modification A002

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract No. DE-AC04-94AL85000 Modification No. 473 Page 2 of 36 1. Section B, Clause B-2, Contract Type and Value is amended as follows: (i) Paragraph (b) is revised to add the total estimated cost entry under "Contract Periods" and "Estimated Cost" for FY 2013, changing the "TOTAL through" entry, and adding a place holder for the two option periods as follows: Add: October 1, 2012 through September 30, 2013 $ 2,462,698,305 Option 1: October 1, 2013 through $ TBD*

  2. F region above kauai: Measurement, model, modification

    SciTech Connect (OSTI)

    Johnson, C.Y.; Sjolander, G.W.; Oran, E.S.; Young, T.R.; Bernhardt, P.A.; Da Rosa, A.V.

    1980-08-01

    A detailed description and analysis is presented of the Lagopedo II results. The rocket was launched on September 11, 1977. Prior to an explosive chemical release a rocket-borne ion mass spectrometer and dual-frequency beacon measured the ion composition and electron content of the undisturbed F region above Kauai, Hawaii. These results are compared to a detailed calculation of ionospheric ion denities. Considerable H/sub 2/O outgassing produced measurable 18/sup +/(H/sub 2/O/sup +/) and 19/sup +/(H/sub 3/O/sup +/) currents which together with O/sup +/ current were used to determine the H/sup 3/O/sup +//H/sub 2/O/sup +/ dissociative recombination rate ratio. The explosive event at 283 km swept clean a l-km-radius region. The boundary of the ionic void was characterized by a steep gradient in the ion density. Results for the first 60 s after the event are presented which show changes in ambient ion species 14/sup +/, 16/sup +/, 30/sup +/, new reactant species 15/sup +/, 17/sup +/, 18/sup +/, 19/sup +/, 27/sup +/, and 46/sup +/, and evidence of ionic depletion by sweeping.

  3. Change Log

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Change Log Change Log Crossroads/NERSC-9 Benchmarks Change Log 05/10/2016 Updated SNAP: New source distribution, LANL release version 1.07 -- See snap_release_v1.07.txt in the distribution for a list of changes. -- Now using Grind Time as the figure of merit. New Edison baseline performance values. Updated SSI Spreadsheet: Changed SNAP metric to Grind Time and updated Edison reference value. 04/13/2016 Updated GTC-P: Edison SSI reference time was updated. With the source changes made on

  4. Evaluation of proposed panel closure modifications at WIPP

    SciTech Connect (OSTI)

    Allen, Lawrence E.; Silva, Matthew K.; Channell, James K.; Abel, John F.; Morgan, Dudley R.

    2001-12-31

    A key component in the design of the WIPP repository is the installation of concrete structures as panel seals in the intake and exhaust drifts after a panel has been filled with waste containers. As noted in the EPA final rule, the panel seal closure system is intended to block brine flow between the waste panels at the WIPP. On April 17, 2001, the DOE proposed seven modifications to the EPA concerning the design of the panel closure system. EPA approval of these modifications is necessary since the details of the panel design are specified in EPAs final rule as a condition for WIPP certification. However, the EPA has not determined whether a rulemaking would be required for these proposed design modifications. On September 4, 2001, the DOE withdrew the request, noting that it would be resubmitted on a future date. The Environmental Evaluation Group (EEG) contracted with two engineers, Dr. John Abel and Dr. Rusty Morgan, to evaluate the proposed modifications. The EEG has accepted the conclusions and recommendations from these two experts: 1) replacement of Salado Mass Concrete with a generic salt-based concrete; 2) replacement of the explosion wall with a construction wall; 3) replacement of freshwater grouting with salt-based grouting; 4) option to allow surface or underground mixing; and 5) option to allow up to one year for completion of closure. The proposed modification to allow local carbonate river rock as aggregate is acceptable pending demonstration that no problems will exist in the resulting concrete. The proposed modification to give the contractor discretion in removal of steel forms is not supported. Instead, several recommendations are made to specifically reduce the number of forms left, thereby reducing potential migration pathways.

  5. Contract DE-AC02-07CH11358 Modifications Language Changes

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Administration Contract Administration & Business Management The SFO Contract Administration and Business Management (CABM) office is responsible for providing direction, day-to-day oversight and contract administration activities related to the Sandia National Laboratories Management and Operating (M&O) contract and associated business management functions such as information technology, cyber security, human resources, purchasing, personal property management, Inspector

  6. Fully Executed WTP Contract Modification M196 (Change Order ORR _ CXP).pdf

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

  7. X AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    ? X AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 11. CONTRACT 10 CODE 1 PAGE 1 of7 2. AMENDMENT/MODIFICATION NO. 13. EFFECTIVE DATE M197 See Block 16C 6. ISSUED BY CODE U.S. Department of Energy National Nuclear Security Administration P.O. Box 2050 Oak Ridge, TN 37831 AC PAGES 4. REQUISITION/PURCHASE I5. PROJECT NO. (If applicable) REQ. NO. NOPR 7. ADMINISTERED BY (If other than Item 6) CODE 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, state, ZIP Code) Babcock & Wilcox

  8. BlueGene/L Specific Modifications to DynInst

    Energy Science and Technology Software Center (OSTI)

    2007-07-02

    DynInst is a dynamic instrumentation library that allows for the modification of running code. This runtime code patching ability allows an application to be modified without requiring the code to be recompiled or relinked. These properties make dynamic instrumentation an attractive method for gathering performance data, debugging an application, or steering an application's execution. This release covers modifications that were made to port this software to the BlueGene/L architecture. It also covers some additional filesmore » that were created for this port.« less

  9. L AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    L _ AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 25 7 See Block 16C 6 . 1SSUED BY CODE 0500 8 NNSA/ Oa kridge Site Office u.s. De pa rtment of Energ y NNSA/ Y-12 S it e Offic e P. O. Box 2 05 0 Bu ilding 97 0 4- 2 Oak Ridge TN 37831 8 . NAME AND ADDRESS OF CONTRACTOR (No., street, county. state and ZIP Code) ABCOCK & WILCOX TECHNICAL B A t t n: W ILLIE J. W I LSON PO BOX 2009 SERVICES Y- 12 , LLC ,1 . CONTRACT ID CODE I PAGE OF PAGES 1 I

  10. The Effect of Magnetic Field on the Position of HTS Leads and theCooler in the Services Tower of the MICE Focusing Magnet

    SciTech Connect (OSTI)

    Green, M.A.; Yang, S.Q.; Cobb, J.; Lau, P.; Lau, W.W.; Witte,H.; Baynham, D.E.; Bradshaw, T.W.

    2007-08-27

    The MICE focusing solenoids have three 4 K coolers (two forthe superconducting magnet and one for the liquid absorber) and four HTSleads that feed the current to the focusing coils. The focusing solenoidsproduce large radial external fields when they operate with the polarityof the two coils in opposition (the gradient or flip mode). When the MICEfocusing coils operate at the same polarity (the solenoid or non-flipmode), the fields are much smaller and parallel to the axis of thesolenoid. The worst-case magnetic field affects the selection of thecooler and the HTS leads. This magnetic field can also determine theheight of the service towers that house the three coolers and the fourHTS leads. This paper shows the criteria used for Cooler selection, HTSlead selection, and the position of both the cooler and leads withrespect to the solenoid axis of rotation.

  11. CS Chang

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    CS Chang CS Chang FES Requirements Worksheet 1.1. Project Information - Center for Plasma Edge Simulation Document Prepared By CS Chang Project Title Center for Plasma Edge Simulation Principal Investigator CS Chang Participating Organizations New York University, ORNL, PPPL, LBNL, MIT, Columbia U., Rutgers U. Lehigh U., Georgia Tech, Auburn U., U. Colorado, U. California at Irvine, Caltech, Hinton Associates Funding Agencies DOE SC DOE NSA NSF NOAA NIH Other: 2. Project Summary & Scientific

  12. The following revisions are included in this modification:

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    B Contract No. DE-AC06-09RL14728 Modification 499 B-i PART I - THE SCHEDULE SECTION B SUPPLIES OR SERVICES AND PRICES/COSTS TABLE OF CONTENTS B.1 TYPE OF CONTRACT ..................................................................................................................... 1 B.2 ITEM(S) BEING ACQUIRED ........................................................................................................... 1 B.3 OBLIGATION AND AVAILABILITY OF FUNDS

  13. Ethanol fuel modification for highway vehicle use. Final report

    SciTech Connect (OSTI)

    Not Available

    1980-01-01

    A number of problems that might occur if ethanol were used as a blending stock or replacement for gasoline in present cars are identified and characterized as to the probability of occurrence. The severity of their consequences is contrasted to those found with methanol in a previous contract study. Possibilities for correcting several problems are reported. Some problems are responsive to fuel modifications but others require or are better dealt with by modification of vehicles and the bulk fuel distribution system. In general, problems with ethanol in blends with gasoline were found to be less severe than those with methanol. Phase separation on exposure to water appears to be the major problem with ethanol/gasoline blends. Another potentially serious problem with blends is the illict recovery of ethanol for beverage usage, or bootlegging, which might be discouraged by the use of select denaturants. Ethanol blends have somewhat greater tendency to vapor lock than base gasoline but less than methanol blends. Gasoline engines would require modification to operate on fuels consisting mostly of ethanol. If such modifications were made, cold starting would still be a major problem, more difficult with ethanol than methanol. Startability can be provided by adding gasoline or light hydrocarbons. Addition of gasoline also reduces the explosibility of ethanol vapor and furthermore acts as denaturant.

  14. Change Log

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Change Log Change Log NERSC-8 / Trinity Benchmarks Change Log 09/03/2013 Correction applied to MiniDFT web-page (to remove inconsistency with MiniDFT README). Capability Improvement measurements do not require 10,000 MPI ranks per k-point. 08/06/2013 Various pages have changed to remove "draft" status 08/02/2013 Correction added to FLOP Counts for "Small" Single-Node Miniapplication Tests page 07/12/2013 README files updated for IOR benchmark to correct an error in wording

  15. Change Log

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    NERSC-8 Trinity Benchmarks Change Log 09032013 Correction applied to MiniDFT web-page ... results spreadsheet (linked on SSP web page); clarification to benchmark run rules ...

  16. Continuous Change Institutional Change Principle

    Broader source: Energy.gov [DOE]

    ecause it takes time to establish institutional change, federal agencies need multiyear plans that continuously work to achieve, reinforce, and improve significant and persistent sustainability goals.

  17. Modifications to WRF's dynamical core to improve the treatment of

    Office of Scientific and Technical Information (OSTI)

    moisture for large--eddy simulations (Journal Article) | SciTech Connect WRF's dynamical core to improve the treatment of moisture for large--eddy simulations Citation Details In-Document Search Title: Modifications to WRF's dynamical core to improve the treatment of moisture for large--eddy simulations Yamaguchi and Feingold (2012) note that the cloud fields in their Weather Research and Forecasting (WRF) large-eddy simulations (LESs) of marine stratocumulus exhibit a strong sensitivity to

  18. Change Number

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Date: M-16-04-04 Federal Facility Agreement and Consent Order Change Control Form Do not use blue ink. Type or print using black ink. May 27, 2004 Originator: K. A. Klein Phone:...

  19. Brine pH Modification Scale Control Technology. 2. A Review.pdf...

    Open Energy Info (EERE)

    Brine pH Modification Scale Control Technology. 2. A Review.pdf Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Brine pH Modification Scale...

  20. File:S-38-Well-Construction-and-Modification-Permit.pdf | Open...

    Open Energy Info (EERE)

    S-38-Well-Construction-and-Modification-Permit.pdf Jump to: navigation, search File File history File usage File:S-38-Well-Construction-and-Modification-Permit.pdf Size of this...

  1. Origin of mechanical modifications in poly (ether ether ketone)/carbon nanotube composite

    SciTech Connect (OSTI)

    Pavlenko, Ekaterina; Puech, Pascal; Bacsa, Wolfgang; Boyer, François; Olivier, Philippe; Sapelkin, Andrei; King, Stephen; Heenan, Richard; Pons, François; Gauthier, Bénédicte; Cadaux, Pierre-Henri

    2014-06-21

    Variations in the hardness of a poly (ether ether ketone) beam electrically modified with multi-walled carbon nanotubes (MWCNT, 0.5%-3%) are investigated. It is shown that both rupture and hardness variations correlate with the changes in carbon nanotube concentration when using micro indentation and extended Raman imaging. Statistical analysis of the relative spectral intensities in the Raman image is used to estimate local tube concentration and polymer crystallinity. We show that the histogram of the Raman D band across the image provides information about the amount of MWCNTs and the dispersion of MWCNTs in the composite. We speculate that we have observed a local modification of the ordering between pure and modified polymer. This is partially supported by small angle neutron scattering measurements, which indicate that the agglomeration state of the MWCNTs is the same at the concentrations studied.

  2. Improved LWR Cladding Performance by EPD Surface Modification Technique

    SciTech Connect (OSTI)

    Corradini, Michael; Sridharan, Kumar

    2012-11-26

    This project will utilize the electro-phoretic deposition technique (EPD) in conjunction with nanofluids to deposit oxide coatings on prototypic zirconium alloy cladding surfaces. After demonstrating that this surface modification is reproducible and robust, the team will subject the modified surface to boiling and corrosion tests to characterize the improved nucleate boiling behavior and superior corrosion performance. The scope of work consists of the following three tasks: The first task will employ the EPD surface modification technique to coat the surface of a prototypic set of zirconium alloy cladding tube materials (e.g. Zircaloy and advanced alloys such as M5) with a micron-thick layer of zirconium oxide nanoparticles. The team will characterize the modified surface for uniformity using optical microscopy and scanning-electron microscopy, and for robustness using standard hardness measurements. After zirconium alloy cladding samples have been prepared and characterized using the EPD technique, the team will begin a set of boiling experiments to measure the heat transfer coefficient and critical heat flux (CHF) limit for each prepared sample and its control sample. This work will provide a relative comparison of the heat transfer performance for each alloy and the surface modification technique employed. As the boiling heat transfer experiments begin, the team will also begin corrosion tests for these zirconium alloy samples using a water corrosion test loop that can mimic light water reactor (LWR) operational environments. They will perform extended corrosion tests on the surface-modified zirconium alloy samples and control samples to examine the robustness of the modified surface, as well as the effect on surface oxidation

  3. Forecast Change

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

    Forecast Change 2011 2012 2013 2014 2015 2016 from 2015 United States Usage (kWh) 3,444 3,354 3,129 3,037 3,153 3,143 -0.3% Price (centskWh) 12.06 12.09 12.58 13.04 12.95 12.96 ...

  4. PAGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    1 PAGE 1 OF 2 PAGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 2. AMENDMENTIMODIFICATION NO. 13. EFFECTIVE DATE M186 October 15, 2009 4. REQUISITION/PURCHASE I 5. PROJECT NO. (If applicable) REQ. NO. 6. ISSUED BY CODE U.S. Department of Energy National Nuclear Security Administration Service Center Property and M&O Contract Support Department P.O. Box 5400 Albuquerque, NM 87185-5400 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy National Nuclear Security

  5. Apparatus and method for electrochemical modification of liquids

    DOE Patents [OSTI]

    James, Patrick I

    2015-04-21

    An apparatus for electrochemical modification of liquid streams employing an electrolytic cell which includes an anode compartment defined by an anode structure where oxidation is effected, containing a liquid electrolyte anolyte, and a cathode compartment defined by a cathode structure where reduction is effected containing a liquid electrolyte catholyte. In addition, the electrolytic cell includes at least one additional compartment arranged at least partially between the anode compartment and the cathode compartment and separated from the anode compartment and the cathode compartment by a separator structure arranged to supports ionic conduction of current between the anode structure and the cathode structure.

  6. Containment canister for capturing hazardous waste debris during piping modifications

    DOE Patents [OSTI]

    Dozier, Stanley B.

    2001-07-24

    The present invention relates to a capture and containment canister which reduces the risk of radiation and other biohazard exposure to workers, the need for a costly containment hut and the need for the extra manpower associated with the hut. The present invention includes the design of a canister having a specially designed magnetic ring that attracts and holds the top of the canister in place during modifications to gloveboxes and other types of radiological and biochemical hoods. The present invention also provides an improved hole saw that eliminates the need for a pilot bit.

  7. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT I~' CONTRACT

    National Nuclear Security Administration (NNSA)

    I~' CONTRACT ID CODE IPAGE OF PAGES DE-NR0000031 . 1 I 1 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. I 5. PROJECT NO. (If applicable) 003 Same as Block 16G . N~ 6. ISSUED BV CODE 7. ADMINISTERED BV (If other than Item 6) Code I U.S. Department of Energy Pittsburgh Naval Reactors Office P.O. Box 109 West Mifflin, PA 15122-0109 8. NAME AND ADDRESS OF CONTRACTOR (No. street, county, State and ZIP Code) (*...) 9.A. AMENDMENT OF SOLICITATION NO. Bechtel Marine

  8. Microsoft Word - Tribal DE-FOA-0001021- Modification 0004

    Energy Savers [EERE]

    Questions about this FOA? Email tribal@ee.doe.gov. Problems with EERE Exchange? Email EERE-ExchangeSupport@hq.doe.gov. Include FOA name and number in subject line. DEPARTMENT OF ENERGY (DOE) OFFICE OF ENERGY EFFICIENCY AND RENEWABLE ENERGY (EERE) DEPLOYMENT OF CLEAN ENERGY AND ENERGY EFFICIENCY PROJECTS ON INDIAN LANDS Funding Opportunity Announcement (FOA) Number: DE-FOA-0001021 FOA Type: Modification 0004 CFDA Number: 81.087 FOA Issue Date: 07/16/2014 Informational Webinar 08/14/2014 at 1:00

  9. IPAGE OF PAGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    I 1 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 15. PROJECT NO. (If appl/cab/e) 216 See Block 16C 6. ISSUED BY CODE 05007 7. ADMINISTERED BY (ffother than Ilem 6) CODE \05007 NNSA/Pantex Site Office NNSA/Pantex Site Office U.S. Department of Energy U.S. Department of Energy NNSA/Pantex Site Office NNSA/Pantex Site Office P.O. Box 30030 P.O. Box 30030 Amarillo TX 79120-0030 Amarillo TX 79120-0030 8. NAME AND ADDRESS OF CONTRACTOR (No., streot, county, S1ste

  10. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTR.l\CT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    CONTR.l\CT 2. AMENDMENT/MODIFICATION NO. j3. EFFECTIVE DATE 179 I see Block l6C 6.1SSUEDBY CODE 100603 Office of River Protection U~S .. Department of Energy Office of River Protection P.O. Box 450 Richland WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street county, State and ZiP Code) WASHINGTON RIVER PROTECTION SOLUTIONS LLC Attn: KAREN VACCA C/0 URS ENERGY & CONSTRUCTION, INC. PO BOX 73 I 720 PARK BLVD BOISE ID 837290073 CODE 806500521 I FACILITY CODE 11. THIS ITEM ONLY APPLIE ,. The

  11. 10 CFR 830 Major Modification Determination for the ATR Diesel Bus (E-3) and Switchgear Replacement

    SciTech Connect (OSTI)

    Noel Duckwtiz

    2011-05-01

    Near term replacement of aging and obsolescent original ATR equipment has become important to ensure ATR capability in support of NE’s long term national missions. To that end, a mission needs statement has been prepared for a non-major system acquisition which is comprised of three interdependent subprojects. The first project, subject of this determination, will replace the existent diesel-electrical bus (E-3) and associated switchgear. More specifically, INL proposes transitioning ATR to 100% commercial power with appropriate emergency backup to include: • Provide commercial power as the normal source of power to the ATR loads currently supplied by diesel-electric power. • Provide backup power to the critical ATR loads in the event of a loss of commercial power. • Replace obsolescent critical ATR power distribution equipment, e.g., switchgear, transformers, motor control centers, distribution panels. Completion of this and two other age-related projects (primary coolant pump and motor replacement and emergency firewater injection system replacement) will resolve major age related operational issues plus make a significant contribution in sustaining the ATR safety and reliability profile. The major modification criteria evaluation of the project pre-conceptual design identified several issues make the project a major modification: 1. Evaluation Criteria #2 (Footprint change). The addition of a new PC-4 structure to the ATR Facility to house safety-related SSCs requires careful attention to maintaining adherence to applicable engineering and nuclear safety design criteria (e.g., structural qualification, fire suppression) to ensure no adverse impacts to the safety-related functions of the housed equipment. 2. Evaluation Criteria #3 (Change of existing process). The change to the strategy for providing continuous reliable power to the safety-related emergency coolant pumps requires careful attention and analysis to ensure it meets a project primary object to maintain or reduce CDF and does not negatively affect the efficacy of the currently approved strategy. 3. Evaluation Criteria #5 (Create the need for new or revised safety SSCs). The change to the strategy for providing continuous reliable power to the safety-related emergency coolant pumps, based on the pre-conceptual design, will require the addition of two quick start diesel generators, their associated power coordination/distribution controls, and a UPS to the list of safety-related SSCs. Similarly to item 1 above, the addition of these active SSCs to the list of safety-related SSCs and replacement of the E-3 bus requires careful attention to maintaining adherence to applicable engineering and nuclear safety design criteria (e.g., seismic qualification, isolation of redundant trains from common fault failures) to ensure no adverse impacts to the safety-related functions.

  12. Signatures of initial state modifications on bispectrum statistics

    SciTech Connect (OSTI)

    Meerburg, P Daniel; Schaar, Jan Pieter van der; Corasaniti, Pier Stefano E-mail: j.p.vanderschaar@uva.nl

    2009-05-15

    Modifications of the initial-state of the inflaton field can induce a departure from Gaussianity and leave a testable imprint on the higher order correlations of the CMB and large scale structures in the Universe. We focus on the bispectrum statistics of the primordial curvature perturbation and its projection on the CMB. For a canonical single-field action the three-point correlator enhancement is localized, maximizing in the collinear limit, corresponding to enfolded or squashed triangles in comoving momentum space. We show that the available local and equilateral template are very insensitive to this localized enhancement and do not generate noteworthy constraints on initial-state modifications. On the other hand, when considering the addition of a dimension 8 higher order derivative term, we find a dominant rapidly oscillating contribution, which had previously been overlooked and whose significantly enhanced amplitude is independent of the triangle under consideration. Nevertheless, the oscillatory nature of (the sign of) the correlation function implies the signal is nearly orthogonal to currently available observational templates, strongly reducing the sensitivity to the enhancement. Constraints on departures from the standard Bunch-Davies vacuum state can be derived, but also depend on the next-to-leading terms. We emphasize that the construction and application of especially adapted templates could lead to CMB bispectrum constraints on modified initial states already competing with those derived from the power spectrum.

  13. Polyamide desalination membrane characterization and surface modification to enhance fouling resistance.

    SciTech Connect (OSTI)

    Sharma, Mukul M.; Freeman, Benny D.; Van Wagner, Elizabeth M.; Hickner, Michael A.; Altman, Susan Jeanne

    2010-08-01

    The market for polyamide desalination membranes is expected to continue to grow during the coming decades. Purification of alternative water sources will also be necessary to meet growing water demands. Purification of produced water, a byproduct of oil and gas production, is of interest due to its dual potential to provide water for beneficial use as well as to reduce wastewater disposal costs. However, current polyamide membranes are prone to fouling, which decreases water flux and shortens membrane lifetime. This research explored surface modification using poly(ethylene glycol) diglycidyl ether (PEGDE) to improve the fouling resistance of commercial polyamide membranes. Characterization of commercial polyamide membrane performance was a necessary first step before undertaking surface modification studies. Membrane performance was found to be sensitive to crossflow testing conditions. Concentration polarization and feed pH strongly influenced NaCl rejection, and the use of continuous feed filtration led to higher water flux and lower NaCl rejection than was observed for similar tests performed using unfiltered feed. Two commercial polyamide membranes, including one reverse osmosis and one nanofiltration membrane, were modified by grafting PEGDE to their surfaces. Two different PEG molecular weights (200 and 1000) and treatment concentrations (1% (w/w) and 15% (w/w)) were studied. Water flux decreased and NaCl rejection increased with PEGDE graft density ({micro}g/cm{sup 2}), although the largest changes were observed for low PEGDE graft densities. Surface properties including hydrophilicity, roughness and charge were minimally affected by surface modification. The fouling resistance of modified and unmodified membranes was compared in crossflow filtration studies using model foulant solutions consisting of either a charged surfactant or an oil in water emulsion containing n-decane and a charged surfactant. Several PEGDE-modified membranes demonstrated improved fouling resistance compared to unmodified membranes of similar initial water flux, possibly due to steric hindrance imparted by the PEG chains. Fouling resistance was higher for membranes modified with higher molecular weight PEG. Fouling was more extensive for feeds containing the cationic surfactant, potentially due to electrostatic attraction with the negatively charged membranes. However, fouling was also observed in the presence of the anionic surfactant, indicating hydrodynamic forces are also responsible for fouling.

  14. Class 1 Permit Modification Notification Addition of Structures within Technical Area 54, Area G, Pad 11, Dome 375 Los Alamos National Laboratory Hazardous Waste Facility Permit, July 2012

    SciTech Connect (OSTI)

    Vigil-Holterman, Luciana R.; Lechel, Robert A.

    2012-08-31

    The purpose of this letter is to notify the New Mexico Environment Department-Hazardous Waste Bureau (NMED-HWB) of a Class 1 Permit Modification to the Los Alamos National Laboratory (LANL) Hazardous Waste Facility Permit issued to the Department of Energy (DOE) and Los Alamos National Security, LLC (LANS) in November 2010. The modification adds structures to the container storage unit at Technical Area (TA) 54 Area G, Pad 11. Permit Section 3.1(3) requires that changes to the location of a structure that does not manage hazardous waste shall be changed within the Permit as a Class 1 modification without prior approval in accordance with Code of Federal Regulations, Title 40 (40 CFR), {section}270.42(a)(1). Structures have been added within Dome 375 located at TA-54, Area G, Pad 11 that will be used in support of waste management operations within Dome 375 and the modular panel containment structure located within Dome 375, but will not be used as waste management structures. The Class 1 Permit Modification revises Figure 36 in Attachment N, Figures; and Figure G.12-1 in Attachment G.12, Technical Area 54, Area G, Pad 11 Outdoor Container Storage Unit Closure Plan. Descriptions of the structures have also been added to Section A.4.2.9 in Attachment A, TA - Unit Descriptions; and Section 2.0 in Attachment G.12, Technical Area 54, Area G, Pad 11 Outdoor Container Storage Unit Closure Plan. Full description of the permit modification and the necessary changes are included in Enclosure 1. The modification has been prepared in accordance with 40 CFR {section}270.42(a)(l). This package includes this letter and an enclosure containing a description of the permit modification, text edits of the Permit sections, and the revised figures (collectively LA-UR-12-22808). Accordingly, a signed certification page is also enclosed. Three hard copies and one electronic copy of this submittal will be delivered to the NMED-HWB.

  15. Surface modification of silicon nitride powder with aluminum

    SciTech Connect (OSTI)

    Han, K.R.; Lim, C.S.; Hong, M.J.; Choi, S.K.; Kwon, S.H.

    1996-02-01

    Surface modification of Si{sub 3}N{sub 4} with alumina was tried. It was achieved by simply mixing Si{sub 3}N{sub 4} powder with an alumina sol up to {approximately}2 wt% as alumina in an aqueous medium, dried, and followed by calcination at 400 C for 1 h. A TEM micrograph showed a coating layer of {approximately} 15 nm thickness. The isoelectric point of the modified Si{sub 3}N{sub 4} powder with porous alumina was at 0H 7.8, which is different from 5.8 and 8.6 for Si{sub 3}N{sub 4} and amorphous alumina, respectively.

  16. Ion beam modification of topological insulator bismuth selenide

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Sharma, Peter Anand; Sharma, A. L. Lima; Hekmaty, Michelle A.; Hattar, Khalid Mikhiel; Stavila, Vitalie; Goeke, Ronald S.; Erickson, K.; Medlin, Douglas L.; Brahlek, M.; Oh, S.; et al

    2014-12-17

    In this study, we demonstrate chemical doping of a topological insulator Bi2Se3 using ion implantation. Ion beam-induced structural damage was characterized using grazing incidence X-ray diffraction and transmission electron microscopy. Ion damage was reversed using a simple thermal annealing step. Carrier-type conversion was achieved using ion implantation followed by an activation anneal in Bi2Se3 thin films. These two sets of experiments establish the feasibility of ion implantation for chemical modification of Bi2Se3, a prototypical topological insulator. Ion implantation can, in principle, be used for any topological insulator. The direct implantation of dopants should allow better control over carrier concentrations formore » the purposes of achieving low bulk conductivity. Ion implantation also enables the fabrication of inhomogeneously doped structures, which in turn should make possible new types of device designs.« less

  17. Surface modification of zirconia-alumina composite ceramics

    SciTech Connect (OSTI)

    Ghosh, S.K.; Chatterjee, D.K.

    1994-12-31

    Surface modification of tetragonal zirconia and {alpha}-alumina composite was accomplished by diffusion of MgO during sintering at 1500{degrees}C. {alpha}-Al{sub 2}O{sub 3} powder, 2 to 60 wt%, was thoroughly mixed with 5 wt% yttria-alloyed zirconia powder, cold pressed and sintered in contact with fine MgO powder. In the diffusion zone, {alpha}-Al{sub 2}O{sub 3} was transformed to spinel, MgAl{sub 2}O{sub 4}, and transformation of tetragonal zirconia to cubic phase depended primarily on alumina concentration. The modified surface was, therefore, a composite of spinel, tetragonal (t) and/or cubic zirconia as distinguished from the core, comprised of {alpha}-Al{sub 2}O{sub 3} and t-ZrO{sub 2}. Tribological characteristics of the modified outer surface are also reported.

  18. Surface modification of low density silica and bridged polysilsesquioxane aerogels

    SciTech Connect (OSTI)

    DeFriend, K. A. (Kimberly A.); Loy, D. A. (Douglas A.); Salazar, K. V. (Kenneth V.); Wilson, K. V. (Kennard V.)

    2004-01-01

    Silica and bridged polysilsesquioxane aerogels are low density materials that are attractive for applications such as, thermal insulation, porous separation media or catalyst supports, adsorbents. However, aerogels are notoriously weak and brittle making it difficult to handle and machine monoliths into desired forms. This prevents the development of many applications that would otherwise benefit from the use of the low density materials. We will describe our efforts to chemically modify and mechanically enhance silica-based aerogels using chemical vapor techniques without sacrificing their characteristic low densities. Monolithic silica and organically bridged polysilsesquioxane aerogels were prepared by sol-gel polymerization of the respective methoxysilane monomers followed by supercritical carbon dioxide drying of the gels. Reactive modification of the gels with volatile silylating compounds during and after the drying process and these effects on the mechanical properties and density of the aerogels will be described.

  19. Cooling Towers: Understanding Key Components of Cooling Towers...

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

    Introduction Federal laws and regulations require Federal agencies to reduce water use and improve water effciency. Namely, Executive Order 13514 Federal Leadership in ...

  20. DOE Awards Task Order Modification for Support Services to Office of

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

    Environmental Management | Department of Energy Task Order Modification for Support Services to Office of Environmental Management DOE Awards Task Order Modification for Support Services to Office of Environmental Management March 11, 2013 - 12:00pm Addthis Media Contact Lynette Chafin, 513-246-0461 Lynette.Chafin@emcbc.doe.gov Cincinnati - The Department of Energy (DOE) today awarded a modification to Task Order DE-DT0005235 to J.G. Management Systems, Inc. of Grand Junction, CO for

  1. Alteration and modulation of protein activity by varying post-translational modification

    DOE Patents [OSTI]

    Thompson, David N; Reed, David W; Thompson, Vicki S; Lacey, Jeffrey A; Apel, William A

    2015-03-03

    Embodiments of the invention include methods of altering the enzymatic activity or solubility of an extremophilic enzyme or post-translationally modifying a protein of interest via using isolated or partially purified glycosyltransferases and/or post-translational modification proteins, extracts of cells comprising glycosyltransferases and/or post-translational modification proteins, and/or in cells comprising one or more glycosyltransferases and/or post-translational modification proteins.

  2. Modification and Application of a New Method for Retrieving Water...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of a New Method for Retrieving Water-Cloud Microphysics Vertical Profile F.-L Chang and Z. Li Earth System Science Interdisciplinary Center University of Maryland College...

  3. 10 CFR 830 Major Modification Determination for Replacement of ATR Primary Coolant Pumps and Motors

    SciTech Connect (OSTI)

    Noel Duckwitz

    2011-05-01

    The continued safe and reliable operation of the ATR is critical to the Department of Energy (DOE) Office of Nuclear Energy (NE) mission. While ATR is safely fulfilling current mission requirements, a variety of aging and obsolescence issues challenge ATR engineering and maintenance personnel’s capability to sustain ATR over the long term. First documented in a series of independent assessments, beginning with an OA Environmental Safety and Health Assessment conducted in 2003, the issues were validated in a detailed Material Condition Assessment (MCA) conducted as a part of the ATR Life Extension Program in 2007.Accordingly, near term replacement of aging and obsolescent original ATR equipment has become important to ensure ATR capability in support of NE’s long term national missions. To that end, a mission needs statement has been prepared for a non-major system acquisition which is comprised of three interdependent subprojects. The first project will replace the existent diesel-electrical bus (E-3), switchgear, and the 50-year-old obsolescent marine diesels with commercial power that is backed with safety related emergency diesel generators, switchgear, and uninterruptible power supply (UPS). The second project, the subject of this major modification determination, will replace the four, obsolete, original primary coolant pumps (PCPs) and motors. Completion of this and the two other age-related projects (replacement of the ATR diesel bus [E-3] and switchgear and replacement of the existent emergency firewater injection system) will resolve major age-related operational issues plus make a significant contribution in sustaining the ATR safety and reliability profile. The major modification criteria evaluation of the project pre-conceptual design identified several issues that lead to the conclusion that the project is a major modification: 1. Evaluation Criteria #3 (Change of existing process). The proposed strategy for equipping the replacement PCPs with VFDs and having the PCPs also function as ECPs will require significant safety basis changes requiring DOE approval. 2. Evaluation Criteria #4 (Use of new technology). The use of VFD and VFD “pump catcher” technology for the PCPs is not currently in use and has not been previously formally reviewed/approved by DOE for ATR. It is noted that VFD technology has several decades of commercial use and experience. However, the ATR probabilistic risk assessment will have to be updated, reflecting the changes for supplying ECP flows including VFD reliability, to confirm that the proposed activity maintains or reduces the CDF for the ATR. 3. Evaluation Criteria #5 (Create the need for new or revised safety SSCs). It is expected that the proposed activity will result in a revised list of safety-related SSCs. Specifically, as currently proposed, the existing ECPs will be deleted from the list. The PCPs and their associated components, picking up the ECP function, will be classified as safety-related active Seismic Category I.

  4. Evaluation of the Cask Transportation Facility Modifications (CTFM) compliance to DOE order 6430.1A

    SciTech Connect (OSTI)

    ARD, K.E.

    1999-07-14

    This report was prepared to evaluate the compliance of Cask Transportation Facility Modifications (CTFM) to DOE Order 6430.1A.

  5. Note: Work function change measurement via improved Anderson method

    SciTech Connect (OSTI)

    Sabik, A. Gołek, F.; Antczak, G.

    2015-05-15

    We propose the modification to the Anderson method of work function change (Δϕ) measurements. In this technique, the kinetic energy of the probing electrons is already low enough for non-destructive investigation of delicate molecular systems. However, in our implementation, all electrodes including filament of the electron gun are polarized positively. As a consequence, electron bombardment of any elements of experimental system is eliminated. Our modification improves cleanliness of the ultra-high vacuum system. As an illustration of the solution capabilities, we present Δϕ of the Ag(100) surface induced by cobalt phthalocyanine layers.

  6. cx-bennington-tower.pdf

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

  7. REMOTE INTERVENTION TOWER ELIMINATION SYSTEM

    SciTech Connect (OSTI)

    Dave Murnane; Renauld Washington

    2002-02-15

    This Topical Report is presented to satisfy reporting requirements in the Statement of work section J.5 page 120 per Department of Energy contract DE-AC26-01NT41093. The project does not contain any imperial research data. This report describes the assembly of Commercial off the shelf (COTS) items configured in a unique manner to represent new and innovative technology in the service of size reduction and material handling at DOE sites, to assist in the D&D effort currently underway at the designated DOE Facilities.

  8. Power Tower | Department of Energy

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

    Storage FOA) Halotechnics: Deep Eutectic Salt Formulations Suitable as Advanced Heat Transfer Fluids (Thermal Storage FOA) HiTek: Low-Cost Heliostat Development (Baseload CSP ...

  9. Permeability Modification Using a Reactive Alkaline-Soluble Biopolymer

    SciTech Connect (OSTI)

    Snadra L. Fox; X. Xie; K. D. Schaller; E. P. Robertson; G. A. Bala

    2003-10-01

    Polymer injection has been used in reservoirs to alleviate contrasting permeability zones. Current technology relies on the use of cross-linking agents to initiate gelation. The use of biological polymers are advantageous in that they can block high permeability areas, are environmentally friendly, and have potential to form reversible gels without the use of hazardous cross-linkers. Recent efforts at the Idaho National Engineering and Environmental Laboratory (INEEL) have produced a reactive alkaline-soluble biopolymer from Agrobacterium sp. ATCC no. 31749 that gels upon decreasing the pH of the polymeric solution. The focus of this study was to determine the impact an alkaline-soluble biopolymer can have on sandstone permeability. Permeability modification was investigated by injecting solubilized biopolymer into Berea sandstone cores and defining the contribution of pH, salt, temperature, and Schuricht crude oil on biopolymer gelation. The biopolymer was soluble in KOH at a pH greater than 11.4 and gelled when the pH dropped below 10.8. The Berea sandstone core buffered the biopolymer solution, decreasing the pH sufficiently to form a gel, which subsequently decreased the permeability. The effluent pH of the control cores injected with 0.01 {und M} KOH (pH 12.0) and 0.10{und M} KOH (pH 13.0) decreased to 10.6 and 12.7, respectively. The permeability of the sandstone core injected with biopolymer was decreased to greater than 95% of the original permeability at 25 C in the presence of 2% NaCl, and Schuricht crude oil; however, the permeability increased when the temperature of the core was increased to 60 C. Residual resistance factors as high as 792 were seen in Berea cores treated with biopolymer. The buffering capacity of sandstone has been demonstrated to reduce the pH of a biopolymer solution sufficiently to cause the polymer to form a stable in-situ gel. This finding could potentially lead to alternate technology for permeability modification, thus extending the life of a reservoir and preventing premature abandonment.

  10. Gelled polymer systems for permeability modification in petroleum reservoirs

    SciTech Connect (OSTI)

    Willhite, G.P.; Green, D.W.; Thiele, J.L.; McCool, C.S.; Mertes, K.B.

    1991-09-01

    The research program described in this report was conducted to improve the performance and predictability of in situ gelation processes designed to increase volumetric sweep efficiency of fluid displacement processes. A principal objective of this research was to develop procedures for design and evaluation of permeability modification processes. Research was conducted in three broad areas: (1) Physical and Chemical Characterization of Gelling Systems (2) In situ Gelation and (3) Mathematical Modeling of In Site Gelation. Gelling systems used chromium as the crosslinking agent. Polyacrylamide and polysaccharides gelling systems were studied. Research was conducted on the chemical structure of polymer/metal ion complexes, kinetics of the reduction of Cr(6) to Cr(3) by thiourea, kinetics of oligomerization and uptake of chromium by polyacrylamide and rheology of chromium/polysaccharide gelling systems. Studies of polymer/metal ion complexes were conducted using solutions of pure monomer, dimer and trimer forms of chromium. A mathematical model was developed to examine the kinetics of Cr(3) oligomerization and uptake of chromium by polyacrylamide. Rheological studies were completed on chromium/polysaccharide gels. In situ gelation experiments were conducted using a bis-ethylenediamine chromium complex and chromium(3) polyacrylamide gelling systems in sandpacks. A numerical model of in situ gelation of chromium/polyacrylamide systems was developed for linear displacement in a sandpack. The numerical model is based on filtration mechanisms and is consistent with experimental data and models developed in this research program. 103 figs., 21 tabs.

  11. In-medium hadron modification and meson spectroscopy

    SciTech Connect (OSTI)

    Chaden Djalali, Dennis Weygand

    2010-04-01

    The theory of the strong interaction, Quantum Chromodynamics (QCD), has been remarkably successful in describing high-energy and short-distance-scale experiments involving quarks and gluons. However, applying QCD to low energy and large-distance-scale experiments has been a major challenge. At low energies, standard nuclear physics with nucleon and meson degrees of freedom work effectively in describing observations. The transition between the two descriptions of hadrons is one of the main goals of hadronic physics. Lattice QCD calculations have made tremendous progress and will one day give us a full description of strong interactions under all regimes. Meanwhile, effective theories incorporating some of the main features of QCD have been successfully developed and help us gain insight into the non-perturbative regime of QCD. All these models predict modifications of the properties of hadrons embedded in nuclear matter. Mesons with exotic quantum numbers are predicted at excitation energies below 2 GeV. Several experiments have been conducted with the Cebaf Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Laboratory (JLab) to test these predictions.

  12. Radwaste assessment program for nuclear station modifications by design engineering

    SciTech Connect (OSTI)

    Eble, R.G.

    1988-01-01

    Radwaste burial for Duke Power Company's (DPC's) seven nuclear units has become a complicated and costly process. Burial costs are based on overall volume, surcharges for radioactivity content and weight of containers, truck and cask rental, driver fees, and state fees and taxes. Frequently, radwaste costs can be as high as $500 per drum. Additionally, DPC is limited on the total burial space allocated for each plant each year. The thrust of this program is to reduce radwaste volumes needing burial at either Barnwell, South Carolina, or Richland, Washington. A limited number of options are available at our sites: (a) minimization of radwaste volume production, (b) segregation of contamination and noncontaminated trash, (c) decontamination of small hardware, (d) volume reduction of compatible trash, (e) incineration of combustible trash (available at Oconee in near future), and (f) burial of below-regulatory-concern very low level waste on site. Frequently, costs can be reduced by contracting services outside the company, i.e., supercompaction, decontamination, etc. Information about radwaste volumes, activities, and weight, however, must be provided to the nuclear production department (NPD) radwaste group early in the nuclear station modification (NSM) process to determine the most cost-effective method of processing radwaste. In addition, NSM radwaste costs are needed for the NPD NSM project budget. Due to the advanced planning scope of this budget, NSM construction costs must be estimated during the design-phase proposal.

  13. Lysine carboxylation: unveiling a spontaneous post-translational modification

    SciTech Connect (OSTI)

    Jimenez-Morales, David; Adamian, Larisa; Shi, Dashuang; Liang, Jie

    2014-01-01

    A computational method for the prediction of lysine carboxylation (KCX) in protein structures is described. The method accurately identifies misreported KCXs and predicts previously unknown KCX sites. The carboxylation of lysine residues is a post-translational modification (PTM) that plays a critical role in the catalytic mechanisms of several important enzymes. It occurs spontaneously under certain physicochemical conditions, but is difficult to detect experimentally. Its full impact is unknown. In this work, the signature microenvironment of lysine-carboxylation sites has been characterized. In addition, a computational method called Predictor of Lysine Carboxylation (PreLysCar) for the detection of lysine carboxylation in proteins with available three-dimensional structures has been developed. The likely prevalence of lysine carboxylation in the proteome was assessed through large-scale computations. The results suggest that about 1.3% of large proteins may contain a carboxylated lysine residue. This unexpected prevalence of lysine carboxylation implies an enrichment of reactions in which it may play functional roles. The results also suggest that by switching enzymes on and off under appropriate physicochemical conditions spontaneous PTMs may serve as an important and widely used efficient biological machinery for regulation.

  14. Just enough inflation: power spectrum modifications at large scales

    SciTech Connect (OSTI)

    Cicoli, Michele [Dipartimento di Fisica ed Astronomia, Universit di Bologna, via Irnerio 46, 40126 Bologna (Italy); Downes, Sean [Leung Center for Cosmology and Particle Astrophysics, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan (China); Dutta, Bhaskar [Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics and Astronomy, Texas A and M University, College Station, TX 77843-4242 (United States); Pedro, Francisco G.; Westphal, Alexander, E-mail: mcicoli@ictp.it, E-mail: ssdownes@phys.ntu.edu.tw, E-mail: dutta@physics.tamu.edu, E-mail: francisco.pedro@desy.de, E-mail: alexander.westphal@desy.de [Deutsches Elektronen-Synchrotron DESY, Theory Group, D-22603 Hamburg (Germany)

    2014-12-01

    We show that models of 'just enough' inflation, where the slow-roll evolution lasted only 50- 60 e-foldings, feature modifications of the CMB power spectrum at large angular scales. We perform a systematic analytic analysis in the limit of a sudden transition between any possible non-slow-roll background evolution and the final stage of slow-roll inflation. We find a high degree of universality since most common backgrounds like fast-roll evolution, matter or radiation-dominance give rise to a power loss at large angular scales and a peak together with an oscillatory behaviour at scales around the value of the Hubble parameter at the beginning of slow-roll inflation. Depending on the value of the equation of state parameter, different pre-inflationary epochs lead instead to an enhancement of power at low ?, and so seem disfavoured by recent observational hints for a lack of CMB power at ??<40. We also comment on the importance of initial conditions and the possibility to have multiple pre-inflationary stages.

  15. EFFECT OF CLIMATE CHANGE ON WATERSHED RUNOFF FLOW - UPPER COOSA RIVER BASIN UPSTREAM FROM PLANT HAMMOND

    SciTech Connect (OSTI)

    Chen, K.

    2011-10-24

    The ability of water managers to maintain adequate supplies in the coming decades depends on future weather conditions, as climate change has the potential to reduce stream flows from their current values due to potentially less precipitation and higher temperatures, and possibly rendering them unable to meet demand. The upper Coosa River basin, located in northwest Georgia, plays an important role in supplying water for industry and domestic use in northern Georgia, and has been involved in water disputes in recent times. The seven-day ten-year low flow (7Q10 flow) is the lowest average flow for seven consecutive days that has an average recurrence interval of 10 years. The 7Q10 flow is statistically derived from the observed historical flow data, and represents the low flow (drought) condition for a basin. The upper Coosa River basin also supplies cooling water for the 935MW coal-fired Hammond plant, which draws about 65% of the 7Q10 flow of the upper Coosa River to dissipate waste heat. The water is drawn through once and returned to the river directly from the generator (i.e., no cooling tower is used). Record low flows in 2007 led to use of portable cooling towers to meet temperature limits. Disruption of the Plant Hammond operation may trigger closure of area industrial facilities (e.g. paper mill). The population in Georgia is expected to double from 9 million to 18 million residents in the next 25 years, mostly in the metropolitan Atlanta area. Therefore, there will be an even greater demand for potable water and for waste assimilation. Climate change in the form of persistent droughts (causing low flows) and high ambient temperatures create regulatory compliance challenges for Plant Hammond operating with a once-through cooling system. Therefore, the Upper Coosa River basin was selected to study the effect of potential future weather change on the watershed runoff flow.

  16. Modification of Thermal Emission via Metallic Photonic Crystals

    SciTech Connect (OSTI)

    Norris, David J.; Stein, Andreas; George, Steven M.

    2012-07-30

    Photonic crystals are materials that are periodically structured on an optical length scale. It was previously demonstrated that the glow, or thermal emission, of tungsten photonic crystals that have a specific structure - known as the 'woodpile structure' - could be modified to reduce the amount of infrared radiation from the material. This ability has implications for improving the efficiency of thermal emission sources and for thermophotovoltaic devices. The study of this effect had been limited because the fabrication of metallic woodpile structures had previously required a complex fabrication process. In this project we pursued several approaches to simplify the fabrication of metallic photonic crystals that are useful for modification of thermal emission. First, we used the self-assembly of micrometer-scale spheres into colloidal crystals known as synthetic opals. These opals can then be infiltrated with a metal and the spheres removed to obtain a structure, known as an inverse opal, in which a three-dimensional array of bubbles is embedded in a film. Second, we used direct laser writing, in which the focus of an infrared laser is moved through a thin film of photoresist to form lines by multiphoton polymerization. Proper layering of such lines can lead to a scaffold with the woodpile structure, which can be coated with a refractory metal. Third, we explored a completely new approach to modified thermal emission - thin metal foils that contain a simple periodic surface pattern, as shown in Fig. 1. When such a foil is heated, surface plasmons are excited that propagate along the metal interface. If these waves strike the pattern, they can be converted into thermal emission with specific properties.

  17. Chemical composition, microstructure, and hygroscopic properties of aerosol particles at the Zotino Tall Tower Observatory (ZOTTO), Siberia, during a summer campaign

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Mikhailov, E. F.; Mironov, G. N.; Pöhlker, C.; Chi, X.; Krüger, M. L.; Shiraiwa, M.; Förster, J. -D.; Pöschl, U.; Vlasenko, S. S.; Ryshkevich, T. I.; et al

    2015-03-16

    In this study we describe the hygroscopic properties of accumulation- and coarse-mode aerosol particles sampled at the Zotino Tall Tower Observatory (ZOTTO) in Central Siberia (61° N; 89° E) from 16 to 21 June 2013. The hygroscopic growth measurements were supplemented with chemical analyses of the samples, including inorganic ions and organic/elemental carbon. In addition, the microstructure and chemical composition of aerosol particles were analyzed by X-ray micro-spectroscopy (STXM-NEXAFS) and transmission electron microscopy (TEM). A mass closure analysis indicates that organic carbon accounted for 61 and 38% of PM in the accumulation mode and coarse mode, respectively. The water solublemore » fraction of organic matter was estimated to be 52 and 8% of PM in these modes. Sulfate, predominantly in the form of ammoniated sulfate, was the dominant inorganic component in both size modes: ~ 34% in the accumulation vs. ~ 47% in the coarse mode. The hygroscopic growth measurements were conducted with a filter-based differential hygroscopicity analyzer (FDHA) over the range of 5–99.4% RH in the hydration and dehydration operation modes. The FDHA study indicates that both accumulation and coarse modes exhibit pronounced water uptake approximately at the same RH, starting at ~ 70%, while efflorescence occurred at different humidities, i.e., at ~ 35% RH for submicron particles vs. ~ 50% RH for supermicron particles. This ~ 15% RH difference was attributed to higher content of organic material in the submicron particles, which suppresses water release in the dehydration experiments. The kappa mass interaction model (KIM) was applied to characterize and parameterize non-ideal solution behavior and concentration-dependent water uptake by atmospheric aerosol samples in the 5–99.4% RH range. Based on KIM, the volume-based hygroscopicity parameter, κv, was calculated. The κv, ws value related to the water soluble (ws) fraction was estimated to be ~ 0.15 for the accumulation mode and ~ 0.36 for the coarse mode, respectively. The obtained κv, ws for the accumulation mode is in good agreement with earlier data reported for remote sites in the Amazon rain forest (κv ≈ 0.15) and a Colorado boreal forest (κv ≈ 0.16). We used the Zdanovskii–Stokes–Robinson (ZSR) mixing rule to predict the chemical composition dependent hygroscopicity, κv, p. The obtained κv, p values overestimate the experimental FDHA-KIM-derived κv, ws by factors of 1.8 and 1.5 for the accumulation and coarse modes, respectively. This divergence can be partly explained by incomplete dissolution of the hygroscopic inorganic compounds resulting from kinetic limitations due to a sparingly soluble organic coating. The TEM and STXM-NEXAFS results indicate that aged submicron (>300 nm) and supermicron aerosol particles possess core-shell structures with an inorganic core, and are enriched in organic carbon at the mixed particle surface. The direct FDHA kinetic studies provide a bulk diffusion coefficient of water of ~ 10−12 cm2 s−1 indicating a semi-solid state of the organic-rich phase leading to kinetic limitations of water uptake and release during hydration and dehydration cycles. Overall the present ZOTTO data set, obtained in the growing season, has revealed a strong influence of organic carbon on the hygroscopic properties of the ambient aerosols. The sparingly soluble organic coating controls hygroscopic growth, phase transitions, and microstructural rearrangement processes. The observed kinetic limitations can strongly influence the outcome of experiments performed on multi-second time scales, such as the commonly applied HTDMA (Hygroscopicity Tandem Differential Mobility Analyzer) and CCNC (Cloud Condensation Nuclei Counter) measurements.« less

  18. Environmentally Benign and Permanent Modifications to Prevent Biofouling on Marine and Hydrokinetic Devices

    SciTech Connect (OSTI)

    Zheng Zhang

    2012-04-19

    Semprus Biosciences is developing environmentally benign and permanent modifications to prevent biofouling on Marine and Hydrokinetic (MHK) devices. Biofouling, including growth on external surfaces by bacteria, algae, barnacles, mussels, and other marine organisms, accumulate quickly on MHK devices, causing mechanical wear and changes in performance. Biofouling on crucial components of hydrokinetic devices, such as rotors, generators, and turbines, imposes substantial mass and hydrodynamic loading with associated efficiency loss and maintenance costs. Most antifouling coatings leach toxic ingredients, such as copper and tributyltin, through an eroding process, but increasingly stringent regulation of biocides has led to interest in the development of non-biocidal technologies to control fouling. Semprus Biosciences research team is developing modifications to prevent fouling from a broad spectrum of organisms on devices of all shapes, sizes, and materials for the life of the product. The research team designed and developed betaine-based polymers as novel underwater coatings to resist the attachment of marine organisms. Different betaine-based monomers and polymers were synthesized and incorporated within various coating formulations. The formulations and application methods were developed on aluminum panels with required adhesion strength and mechanical properties. The coating polymers were chemically stable under UV, hydrolytic and oxidative environments. The sulfobetaine formulations are applicable as nonleaching and stable underwater coatings. For the first time, coating formulations modified with highly packed sulfobetaine polymers were prepared and demonstrated resistance to a broad spectrum of marine organisms. Assays for comparing nonfouling performance were developed to evaluate protein adsorption and bacteria attachment. Barnacle settlement and removal were evaluated and a 60-day field test was performed. Silicone substrates including a commercial fouling release coating were used for comparison. Compared with the unmodified silicone substrates, the sulfobetaine-modified formulations were able to exhibit a 98% reduction in fibrinogen adsorption, 97.0% (E. coli), 99.6% (S. aureus), and 99.5% (C. lytica) reduction in bacteria attachment, and 100% reduction in barnacles cyprid attachment. In addition to the significant improvement in fouling resistance of various organisms, the 60-day field test also showed an evident efficacy from visual assessment, foul rating, and fouling removal test. The research confirmed that the novel antifouling mechanism of betaine polymers provides a new avenue for marine coating development. The developed coatings out-performed currently used nontoxic underwater coatings in a broad spectrum of fouling resistance. By further developing formulations and processing methods for specific devices, the technology is ready for the next stage of development with demonstration in MHK systems.

  19. Metallic phase change material thermal storage for Dish Stirling

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Andraka, C. E.; Kruizenga, A. M.; Hernandez-Sanchez, B. A.; Coker, E. N.

    2015-06-05

    Dish-Stirling systems provide high-efficiency solar-only electrical generation and currently hold the world record at 31.25%. This high efficiency results in a system with a high possibility of meeting the DOE SunShot goal of $0.06/kWh. However, current dish-Stirling systems do not incorporate thermal storage. For the next generation of non-intermittent and cost-competitive solar power plants, we propose adding a thermal energy storage system that combines latent (phase-change) energy transport and latent energy storage in order to match the isothermal input requirements of Stirling engines while also maximizing the exergetic efficiency of the entire system. This paper reports current findings in themore » area of selection, synthesis and evaluation of a suitable high performance metallic phase change material (PCM) as well as potential interactions with containment alloy materials. The metallic PCM's, while more expensive than salts, have been identified as having substantial performance advantages primarily due to high thermal conductivity, leading to high exergetic efficiency. Systems modeling has indicated, based on high dish Stirling system performance, an allowable cost of the PCM storage system that is substantially higher than SunShot goals for storage cost on tower systems. Several PCM's are identified with suitable melting temperature, cost, and performance.« less

  20. Atomistic simulation of laser-pulse surface modification: Predictions of models with various length and time scales

    SciTech Connect (OSTI)

    Starikov, Sergey V. Pisarev, Vasily V.

    2015-04-07

    In this work, the femtosecond laser pulse modification of surface is studied for aluminium (Al) and gold (Au) by use of two-temperature atomistic simulation. The results are obtained for various atomistic models with different scales: from pseudo-one-dimensional to full-scale three-dimensional simulation. The surface modification after laser irradiation can be caused by ablation and melting. For low energy laser pulses, the nanoscale ripples may be induced on a surface by melting without laser ablation. In this case, nanoscale changes of the surface are due to a splash of molten metal under temperature gradient. Laser ablation occurs at a higher pulse energy when a crater is formed on the surface. There are essential differences between Al ablation and Au ablation. In the first step of shock-wave induced ablation, swelling and void formation occur for both metals. However, the simulation of ablation in gold shows an additional athermal type of ablation that is associated with electron pressure relaxation. This type of ablation takes place at the surface layer, at a depth of several nanometers, and does not induce swelling.

  1. Comment re DOE's NOI re continuation or modification of Price-Anderson Act

    Energy Savers [EERE]

    | Department of Energy re DOE's NOI re continuation or modification of Price-Anderson Act Comment re DOE's NOI re continuation or modification of Price-Anderson Act Comments of Kerr-McGee Corporation to the "Notice of Inquiry" by DOE seeking comments to assist in the preparation of a report to Congress concerning the continuation or modification of the Price-Anderson Act (the "Act"). These comments will focus solely on question 25 of the notice -- namely, whether the

  2. Annual Change Report 2006/2007

    SciTech Connect (OSTI)

    Washington Regulatory and Environmental Services; Washington TRU Solutions LLC

    2007-11-16

    As part of continuing compliance, the U.S. Environmental Protection Agency (EPA) requires the U.S. Department of Energy (DOE) to provide information on any change in conditions or activities pertaining to the disposal system since the most recent compliance application. This requirement is identified in Title 40 Code of Federal Regulations (CFR), Section 194.4(b)(4), which states: "No later than six months after the administrator issues a certification, and at least annually thereafter, the Department shall report to the Administrator, in writing, any changes in conditions or activities pertaining to the disposal system that were not required to be reported by paragraph (b)(3) of this section and that differ from information contained in the most recent compliance application." In meeting the requirement, the DOE provides an annual report each November of all applicable changes under the above requirement. This annual report informs the EPA of changes to information in the most recent compliance recertification (the 2004 Compliance Recertification). Significant planned changes must be reported to the EPA prior to implementation by the DOE. In addition, Title 40 CFR, Section 194.4(b)(3) requires that significant unplanned changes be reported to the EPA within 24 hours or ten days, depending on the severity of the activity or condition. To date, there have been no significant unplanned changes to the certification basis. Planned changes have been submitted on an individual basis. All other changes are reported annually. Changes in activities or conditions are reviewed to determine if 40 CFR Section 194.4(b)(3) reporting is necessary. As indicated above, no significant unplanned changes were identified for the time period covered by this report. The enclosed tables list those items identified for reporting under 40 CFR Section 194.4(b)(4). The majority of the items described in this report are inspections, reports, and modifications to written plans and procedures for WIPP operations.

  3. RFID tag modification for full depth backscatter modulation

    DOE Patents [OSTI]

    Scott, Jeffrey Wayne [Pasco, WA; Pratt, Richard M [Richland, WA

    2010-07-20

    A modulated backscatter radio frequency identification device includes a diode detector configured to selectively modulate a reply signal onto an incoming continuous wave; communications circuitry configured to provide a modulation control signal to the diode detector, the diode detector being configured to modulate the reply signal in response to be modulation control signal; and circuitry configured to increase impedance change at the diode detector which would otherwise not occur because the diode detector rectifies the incoming continuous wave while modulating the reply signal, whereby reducing the rectified signal increases modulation depth by removing the reverse bias effects on impedance changes. Methods of improving depth of modulation in a modulated backscatter radio frequency identification device are also provided.

  4. Modification of surface properties of copper-refractory metal alloys

    DOE Patents [OSTI]

    Verhoeven, John D.; Gibson, Edwin D.

    1993-10-12

    The surface properties of copper-refractory metal (CU-RF) alloy bodies are modified by heat treatments which cause the refractory metal to form a coating on the exterior surfaces of the alloy body. The alloys have a copper matrix with particles or dendrites of the refractory metal dispersed therein, which may be niobium, vanadium, tantalum, chromium, molybdenum, or tungsten. The surface properties of the bodies are changed from those of copper to that of the refractory metal.

  5. On modification of global warming by sulfate aerosols

    SciTech Connect (OSTI)

    Mitchell, J.F.B.; Johns, T.C.

    1997-02-01

    There is increasing evidence that the response of climate to increasing greenhouse gases may be modified by accompanying increases in sulfate aerosols. In this study, the patterns of response in the surface climatology of a coupled ocean-atmosphere general circulation model forced by increases in carbon dioxide alone is compared with those obtained by increasing carbon dioxide and aerosol forcing. The simulations are run from early industrial times using the estimated historical forcing and continued to the end of the twenty-first century assuming a nonintervention emissions scenario for greenhouse gases and aerosols. The comparison is made for the period 2030-2050 when the aerosol forcing is a maximum. In winter, the cooling due to aerosols merely tends to reduce the response to carbon dioxide, whereas in summer, it weakens the monsoon circulations and reverses some of the changes in the hydrological cycle on increasing carbon dioxide. This response is in some respects similar to that found in simulations with changed orbital parameters, as between today and the middle Holocene. The hydrological response in the palaeosimulations is supported by palaeoclimatic reconstructions. The results of changes in aerosol concentrations of the magnetic projected in the scenarios would have a major effect on regional climate, especially over Europe and Southeast Asia. 74 refs., 12 figs., 6 tabs.

  6. Control Scheme Modifications Increase Efficiency of Steam Generation System at Exxon Mobil Gas Plant

    SciTech Connect (OSTI)

    2002-01-01

    This case study highlights control scheme modifications made to the steam system at ExxonMobil's Mary Ann Gas Plant in Mobile, Alabama, which improved steam flow efficiency and reduced energy costs.

  7. Modifications to incorporate competitive electricity prices in the annual energy outlook 1998 - electricity market module

    SciTech Connect (OSTI)

    1998-02-01

    The purpose of this report is to describe modifications to the Electricity Market Module (EMM) for the Annual Energy Outlook 1998. It describes revisions necessary to derive competitive electricity prices and the corresponding reserve margins.

  8. Contract DE-AC04-94AL85000 Modification M508

    National Nuclear Security Administration (NNSA)

    Contract DE-AC04-94AL85000 Modification M508 Attachment 1 SECTION J APPENDIX C Special Bank Account Agreement (Updated Mod M271, M461, M497, M508) Intentionally left blank for...

  9. DE-AC27-I1ORVI15051 Modification A009

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of this modification is to make an equitable adjustment to contract cost relevant to transition cost and the stop work order dated November 27, 2009, and modify the period of...

  10. Contract DE-AC04-94AL85000 Modification M508

    National Nuclear Security Administration (NNSA)

    Contract DE-AC04-94AL85000 Modification M508 Attachment 1 SECTION J APPENDIX C Special Bank Account Agreement (Updated Mod M271, M461, M497, M508) Intentionally left blank for Internet posting purposes.

  11. Modification of Lignin by Protein Cross-linking to Facilitate Production of

    Office of Scientific and Technical Information (OSTI)

    Biofuels From Poplar (Technical Report) | SciTech Connect Technical Report: Modification of Lignin by Protein Cross-linking to Facilitate Production of Biofuels From Poplar Citation Details In-Document Search Title: Modification of Lignin by Protein Cross-linking to Facilitate Production of Biofuels From Poplar The limited supply of fossil fuels and the associated environmental issues associated with their utilization has resulted in much effort put forth to promote renewable resources of

  12. Chemical composition, microstructure, and hygroscopic properties of aerosol particles at the Zotino Tall Tower Observatory (ZOTTO), Siberia, during a summer campaign

    SciTech Connect (OSTI)

    Mikhailov, E. F.; Mironov, G. N.; Pöhlker, C.; Chi, X.; Krüger, M. L.; Shiraiwa, M.; Förster, J. -D.; Pöschl, U.; Vlasenko, S. S.; Ryshkevich, T. I.; Weigand, M.; Kilcoyne, A. L. D.; Andreae, M. O.

    2015-03-16

    In this study we describe the hygroscopic properties of accumulation- and coarse-mode aerosol particles sampled at the Zotino Tall Tower Observatory (ZOTTO) in Central Siberia (61° N; 89° E) from 16 to 21 June 2013. The hygroscopic growth measurements were supplemented with chemical analyses of the samples, including inorganic ions and organic/elemental carbon. In addition, the microstructure and chemical composition of aerosol particles were analyzed by X-ray micro-spectroscopy (STXM-NEXAFS) and transmission electron microscopy (TEM). A mass closure analysis indicates that organic carbon accounted for 61 and 38% of PM in the accumulation mode and coarse mode, respectively. The water soluble fraction of organic matter was estimated to be 52 and 8% of PM in these modes. Sulfate, predominantly in the form of ammoniated sulfate, was the dominant inorganic component in both size modes: ~ 34% in the accumulation vs. ~ 47% in the coarse mode.

    The hygroscopic growth measurements were conducted with a filter-based differential hygroscopicity analyzer (FDHA) over the range of 5–99.4% RH in the hydration and dehydration operation modes. The FDHA study indicates that both accumulation and coarse modes exhibit pronounced water uptake approximately at the same RH, starting at ~ 70%, while efflorescence occurred at different humidities, i.e., at ~ 35% RH for submicron particles vs. ~ 50% RH for supermicron particles. This ~ 15% RH difference was attributed to higher content of organic material in the submicron particles, which suppresses water release in the dehydration experiments.

    The kappa mass interaction model (KIM) was applied to characterize and parameterize non-ideal solution behavior and concentration-dependent water uptake by atmospheric aerosol samples in the 5–99.4% RH range. Based on KIM, the volume-based hygroscopicity parameter, κv, was calculated. The κv, ws value related to the water soluble (ws) fraction was estimated to be ~ 0.15 for the accumulation mode and ~ 0.36 for the coarse mode, respectively. The obtained κv, ws for the accumulation mode is in good agreement with earlier data reported for remote sites in the Amazon rain forest (κv ≈ 0.15) and a Colorado boreal forest (κv ≈ 0.16).

    We used the Zdanovskii–Stokes–Robinson (ZSR) mixing rule to predict the chemical composition dependent hygroscopicity, κv, p. The obtained κv, p values overestimate the experimental FDHA-KIM-derived κv, ws by factors of 1.8 and 1.5 for the accumulation and coarse modes, respectively. This divergence can be partly explained by incomplete dissolution of the hygroscopic inorganic compounds resulting from kinetic limitations due to a sparingly soluble organic coating. The TEM and STXM-NEXAFS results indicate that aged submicron (>300 nm) and supermicron aerosol particles possess core-shell structures with an inorganic core, and are enriched in organic carbon at the mixed particle surface. The direct FDHA kinetic studies provide a bulk diffusion coefficient of water of ~ 10−12 cm2 s−1 indicating a semi-solid state of the organic-rich phase leading to kinetic limitations of water uptake and release during hydration and dehydration cycles. Overall the present ZOTTO data set, obtained in the growing season, has revealed a strong influence of organic carbon on the hygroscopic properties of the ambient aerosols. The sparingly soluble organic coating controls hygroscopic growth, phase transitions, and microstructural rearrangement processes. The observed kinetic limitations can strongly influence the outcome of experiments performed on multi-second time scales, such as the commonly applied HTDMA (Hygroscopicity Tandem Differential Mobility Analyzer) and CCNC (Cloud Condensation Nuclei Counter) measurements.

  13. Controlled levels of protein modification through a chromatography-mediated bioconjugation

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kwant, Richard L.; Jaffe, Jake; Palmere, Peter J.; Francis, Matthew B.

    2015-02-27

    Synthetically modified proteins are increasingly finding applications as well-defined scaffolds for materials. In practice it remains difficult to construct bioconjugates with precise levels of modification because of the limited number of repeated functional groups on proteins. This article describes a method to control the level of protein modification in cases where there exist multiple potential modification sites. A protein is first tagged with a handle using any of a variety of modification chemistries. This handle is used to isolate proteins with a particular number of modifications via affinity chromatography, and then the handle is elaborated with a desired moiety usingmore » an oxidative coupling reaction. This method results in a sample of protein with a well-defined number of modifications, and we find it particularly applicable to systems like protein homomultimers in which there is no way to discern between chemically identical subunits. We demonstrate the use of this method in the construction of a protein-templated light-harvesting mimic, a type of system which has historically been difficult to make in a well-defined manner.« less

  14. Controlled levels of protein modification through a chromatography-mediated bioconjugation

    SciTech Connect (OSTI)

    Kwant, Richard L. [Univ. of California, Berkeley, CA (United States). Dept. of Chemistry.; Jaffe, Jake [Univ. of California, Berkeley, CA (United States). Dept. of Chemistry.; Palmere, Peter J. [Univ. of California, Berkeley, CA (United States). Dept. of Chemistry.; Francis, Matthew B. [Univ. of California, Berkeley, CA (United States). Dept. of Chemistry; Lawrence Berkeley National Lab., Berkeley, CA (United States). Materials Sciences Div.

    2015-01-01

    Synthetically modified proteins are increasingly finding applications as well-defined scaffolds for materials. In practice it remains difficult to construct bioconjugates with precise levels of modification because of the limited number of repeated functional groups on proteins. This article describes a method to control the level of protein modification in cases where there exist multiple potential modification sites. A protein is first tagged with a handle using any of a variety of modification chemistries. This handle is used to isolate proteins with a particular number of modifications via affinity chromatography, and then the handle is elaborated with a desired moiety using an oxidative coupling reaction. This method results in a sample of protein with a well-defined number of modifications, and we find it particularly applicable to systems like protein homomultimers in which there is no way to discern between chemically identical subunits. We demonstrate the use of this method in the construction of a protein-templated light-harvesting mimic, a type of system which has historically been difficult to make in a well-defined manner.

  15. Preparation of high porosity xerogels by chemical surface modification.

    DOE Patents [OSTI]

    Deshpande, Ravindra; Smith, Douglas M.; Brinker, C. Jeffrey

    1996-01-01

    This invention provides an extremely porous xerogel dried at vacuum-to-below supercritical pressures but having the properties of aerogels which are typically dried at supercritical pressures. This is done by reacting the internal pore surface of the wet gel with organic substances in order to change the contact angle of the fluid meniscus in the pores during drying. Shrinkage of the gel (which is normally prevented by use of high autoclave pressures, such that the pore fluid is at temperature and pressure above its critical values) is avoided even at vacuum or ambient pressures.

  16. Annual Change Report 2003/2004

    SciTech Connect (OSTI)

    Washington Regulatory and Environmental Services; Washington TRU Solutions LLC

    2004-11-10

    As part of continuing compliance, the U.S. Environmental Protection Agency (EPA) requires the U.S. Department of Energy (DOE) to provide any change in information since the most recent compliance application. This requirement is identified in Title 40 Code of Federal Regulations (CFR), Section 194.4(b)(4), which states: No later than six months after the administrator issues a certification, and at least annually thereafter, the Department shall report to the Administrator, in writing, any changes in conditions or activities pertaining to the disposal system that were not required to be reported by paragraph (b)(3) of this section and that differ from information contained in the most recent compliance application. In meeting the requirement, the DOE provides an annual report of all changes applicable under the above requirement each November. This annual report informs the EPA of changes to information in the most recent compliance application, or for this report the 1996 Compliance Certification Application (CCA). Significant planned changes must be reported to the EPA prior to implementation by the DOE. In addition, Title 40 CFR, Section 194.4(b)(3) requires that significant unplanned changes be reported to the EPA within 24 hours or ten days, depending on the severity of the activity or condition. To date, there have been no significant unplanned changes to the certification basis. Planned changes have been submitted on an individual basis. All other changes are reported annually. The period covered by this Annual Change Report includes changes that occurred between July 1, 2003, and June 30, 2004. Changes in activities or conditions are reviewed to determine if 40 CFR Section 194.4(b)(3) reporting is necessary. As indicated above, no significant unplanned changes were identified for the time period covered by this report. The enclosed tables list those items identified for reporting under 40 CFR Section 194.4(b)(4). The majority of the changes described in this report are associated with modifications to written plans and procedures for WIPP operations.

  17. Climate change cripples forests

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Climate Change Cripples Forests Climate change cripples forests A team of scientists concluded that in the warmer and drier Southwest of the near future, widespread tree mortality...

  18. Climate Change Response

    Energy Savers [EERE]

    the Interior Climate Change Response "From the Everglades to the Great Lakes to Alaska and everywhere in between, climate change is a leading threat to natural and cultural ...

  19. Climate change cripples forests

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Climate change cripples forests Climate change cripples forests A team of scientists concluded that in the warmer and drier Southwest of the near future, widespread tree mortality ...

  20. Climate change cripples forests

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Climate Change Cripples Forests Climate change cripples forests A team of scientists concluded that in the warmer and drier Southwest of the near future, widespread tree mortality ...

  1. 1. CNTRAT IDCODE PAGE OF PGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1 PDF icon 1 More Documents & Publications Microsoft Word - GJPPGPracticesDraft.doc Updated Section H Greening Clauses DOE Purchase Card Policy

    CNTRAT IDCODE PAGE OF PGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1 OTATI OEPG FIP 5S 2, AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE (M/IJ/Y) 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable) 313 See Block 16C1 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy Office of River

  2. DE-AC27-I1ORVI15051 Modification A009

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    I1ORVI15051 Modification A009 Page 2 of 6 A. The purpose of this modification is to make an equitable adjustment to contract cost relevant to transition cost and the stop work order dated November 27, 2009, and modify the period of performance as detailed below: Reference: 1. ATL Letter dated May 24, 2010, from J.G. Hwang, ATL, to D.A. Gallegos, ORP, "CLIN 1 TRANSITION COST OVERRUN PROPOSAL (Contract Number DE-AC27-1I0RV 1505 1) Background: The contract was awarded on November 20, 2009, and

  3. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 11. CONTRACT ID CODE

    National Nuclear Security Administration (NNSA)

    -------------------------------------------------------- AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 11. CONTRACT ID CODE I PAGE OF PAGES 1 I 2 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 15. PROJECT NO. (If applicable) 0246 See Block 16C 6. ISSUED BY CODE 05003 7. ADMINISTERED BY (If other than Item 6) CODE 105003 NNSA/Los Alamos Site Office NNSA/Los Alamos Site Office U.S. Department of Energy U.S. Department of Energy NNSA/Los Alamos Site Office Los

  4. Modifications Made to the MELCOR Code for Analyzing Lithium Fires in Fusion Reactors

    SciTech Connect (OSTI)

    Merrill, Brad Johnson

    2000-04-01

    This report documents initial modifications made to the MELCOR code that allows MELCOR to predict the consequences of lithium spill accidents for evolving fusion reactor designs. These modifications include thermodynamic and transport properties for lithium, and physical models for predicting the rate of reaction of and energy production from the lithium-air reaction. A benchmarking study was performed with this new MELCOR capability. Two lithium-air reaction tests conducted at the Hanford Engineering Development Laboratory (HEDL) were selected for this benchmark study. Excellent agreement was achieved between MELCOR predictions and measured data. Recommendations for modeling lithium fires with MELCOR and for future work in this area are included in this report.

  5. Modifications made to the MELCOR Code for Analyzing Lithium Fires in Fusion Reactors

    SciTech Connect (OSTI)

    B. J. Merrill

    2000-04-01

    This report documents initial modifications made to the MELCOR code that allows MELCOR to predict the consequences of lithium spill accidents for evolving fusion reactor designs. These modifications include thermodynamic and transport properties for lithium, and physical models for predicting the rate of reaction of and energy production from the lithium-air reaction. A benchmarking study was performed with this new MELCOR capability. Two lithium-air reaction tests conducted at the Hanford Engineering Development Laboratory (HEDL) were selected for this benchmark study. Excellent agreement was achieved between MELCOR predictions and measured data. Recommendations for modeling lithium fires with MELCOR and for future work in this area are included in this report.

  6. Microsoft Word - Final Class 2 Permit Modification Request TRUPACT III.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    January 10, 2011 Mr. James Bearzi. Chief Hazardous Waste Bureau New Mexico Environment Department 2905 Rodeo Park Drive East, Building 1 Santa Fe, New Mexico 87505-6303 Subject: Notification of a Class 2 Permit Modification to Permit Number: NM4890139088-TSDF Dear Mr. Bearzi: Enclosed is a Class 2 Permit Modification Request to: * Add TRUPACT-II I and Standard Large Box 2 * Revise Area of Contact-Handled Bay We certify under penalty of law that this document and the enclosure were prepared under

  7. Contract No. DE-AC02-07CH11358 Section E Contract Modification No. 133

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    E Contract Modification No. 133 i PART I SECTION E INSPECTION AND ACCEPTANCE PAGE NO. E.1 - FAR 52.246-9 - INSPECTION OF RESEARCH AND DEVELOPMENT (SHORT FORM) (APR 1984) E-1 E.2 - CERTIFICATION E-1 Contract No. DE-AC02-07CH11358 Section E Contract Modification No.133 E-1 PART I SECTION E - INSPECTION AND ACCEPTANCE E.1 - FAR 52.246-9 - INSPECTION OF RESEARCH AND DEVELOPMENT (SHORT FORM) (APR 1984) The Government has the right to inspect and evaluate the work performed or being performed under

  8. Modification No. M226 Contract No. DE-AC54-00AL66620

    National Nuclear Security Administration (NNSA)

    Modification No. M226 Contract No. DE-AC54-00AL66620 Page No. 2 of 2 The purpose of this Modification is to incorporate the following: A. Replace Part III, LIST OF DOCUMENTS, EXHIBITS, AND OTHER ATTACHMENTS, Section J - LIST OF ATTACHMENTS, Appendix A - PERSONNEL APPENDIX in its entirety to update REIMBURSEMENT AUTHORIZATIONS, TABLE OF CONTENTS, to add "I. Exempt Compensatory Time" and "J. Additional Bonus for Non-Key Personnel" to Section I. COMPENSATION SYSTEM, and to

  9. AMEN DMENT OF SOLICITATION/MODIFICATION OF CONTRACT r* CONTRACT ID CODE

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AME:NDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT 10 CODE PAGE 1 OF 224 PAGES 2. AMENDMENT/MODIFICATION NO. M202 3. EFFECTIVE DATE October 1, 2003 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.s. Department of Energy N.itional Nuclear Security Administration Sandia Site Office Mail Stop 0184 P.O. Box 5400 AlbuauerQue, NM 87185-5400 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, state, ZIP

  10. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT /1. CONTRACT ID CODE

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SOLICITATION/MODIFICATION OF CONTRACT /1. CONTRACT ID CODE I PAGE OF PAGES 1 I 2 2. AMENDMENT/MODIFICATION NO 3. EFFECTIVE DATE 4 REQUISITION/PURCHASE REQ. NO 1 5 PROJECT NO. (If applicable) 342 See Block 16C 12SCOO1256 Item 0001 6. ISSUED BY CODE 00518 7. ADMINISTERED BY (If other than Item 6) CODE 1 0 0518 Oak 'Ridge Oak Ridge U.S. Department of Energy U.S. Department of Energy P.O. Box 2001 P.O. Box 2001 Oak Ridge TN 37831 Oak Ridge TN 37831 8. NAME AND ADDRESS OF CONTRACTOR (No .. street.

  11. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE PAGE OF PAGES

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE PAGE OF PAGES 1 20 2. AMENDMENT/MODIFICATION NO. A001 3. EFFECTIVE DATE See Block 16C 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy National Energy Technology Laboratory PO Box 880, 3610 Collins Ferry Road Morgantown, WV 26507-0880 Attn: Amanda Lopez 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State, and

  12. Hydrogen-bond Specific Materials Modification in Group IV Semiconductors

    SciTech Connect (OSTI)

    Tolk, Norman H.; Feldman, L. C.; Luepke, G.

    2015-09-14

    Executive summary Semiconductor dielectric crystals consist of two fundamental components: lattice atoms and electrons. The former component provides a crystalline structure that can be disrupted by various defects or the presence of an interface, or by transient oscillations known as phonons. The latter component produces an energetic structure that is responsible for the optical and electronic properties of the material, and can be perturbed by lattice defects or by photo-excitation. Over the period of this project, August 15, 1999 to March 31, 2015, a persistent theme has been the elucidation of the fundamental role of defects arising from the presence of radiation damage, impurities (in particular, hydrogen), localized strain or some combination of all three. As our research effort developed and evolved, we have experienced a few title changes, which reflected this evolution. Throughout the project, ultrafast lasers usually in a pump-probe configuration provided the ideal means to perturb and study semiconductor crystals by both forms of excitation, vibrational (phonon) and electronic (photon). Moreover, we have found in the course of this research that there are many interesting and relevant scientific questions that may be explored when phonon and photon excitations are controlled separately. Our early goals were to explore the dynamics of bond-selective vibrational excitation of hydrogen from point defects and impurities in crystalline and amorphous solids, initiating an investigation into the behavior of hydrogen isotopes utilizing a variety of ultrafast characterization techniques, principally transient bleaching spectroscopy to experimentally obtain vibrational lifetimes. The initiative could be divided into three related areas: (a) investigation of the change in electronic structure of solids due to the presence of hydrogen defect centers, (b) dynamical studies of hydrogen in materials and (c) characterization and stability of metastable hydrogen impurity states under transient compression. This research focused on the characterization of photon and ion stimulated hydrogen related defect and impurity reactions and migration in solid state matter, which requires a detailed understanding of the rates and pathways of vibrational energy flow, of the transfer channels and of the coupling mechanisms between local vibrational modes (LVMs) and phonon bath as well as the electronic system of the host material. It should be stressed that researchers at Vanderbilt and William and Mary represented a unique group with a research focus and capabilities for low temperature creation and investigation of such material systems. Later in the program, we carried out a vigorous research effort addressing the roles of defects, interfaces, and dopants on the optical and electronic characteristics of semiconductor crystals, using phonon generation by means of ultrafast coherent acoustic phonon (CAP) spectroscopy, nonlinear characterization using second harmonic generation (SHG), and ultrafast pump-and-probe reflectivity and absorption measurements. This program featured research efforts from hydrogen defects in silicon alone to other forms of defects such as interfaces and dopant layers, as well as other important semiconducting systems. Even so, the emphasis remains on phenomena and processes far from equilibrium, such as hot electron effects and travelling localized phonon waves. This program relates directly to the mission of the Department of Energy. Knowledge of the rates and pathways of vibrational energy flow in condensed matter is critical for understanding dynamical processes in solids including electronically, optically and thermally stimulated defect and impurity reactions and migration. The ability to directly probe these pathways and rates allows tests of theory and scaling laws at new levels of precision. Hydrogen embedded in model crystalline semiconductors and metal oxides is of particular interest, since the associated local mode can be excited cleanly, and is usually well-separated in energy from the phonon bath. These basic dynamical studies have provided new insights for example into the fundamental mechanisms that control proton diffusion in these oxides. This area of materials science has largely fulfilled its promise to identify degradation mechanisms in electronic and optoelectronic devices, and to advance solid oxide proton conductors for fuel cells, gas sensors and proton-exchange membrane applications. It also provides the basis for innovations in materials synthesis involving atomic-selective diffusion and desorption.

  13. EIS-0435: Modification of the Groton Generation Station Interconnection Agreement, Brown County, South Dakota

    Broader source: Energy.gov [DOE]

    This EIS evaluates the environmental impacts of a proposal for DOE's Western Area Power Administration to modify its Large Generator Connection Agreement for the Groton Generation Station in Brown County, South Dakota. The modification would allow Basin Electric Power Cooperative, which operates the generation station, to produce power above the current operating limit of 50 average megawatts.

  14. Liquid phase methanol LaPorte process development unit: Modification, operation, and support studies

    SciTech Connect (OSTI)

    Not Available

    1991-02-02

    This report consists of Detailed Data Acquisition Sheets for Runs E-6 and E-7 for Task 2.2 of the Modification, Operation, and Support Studies of the Liquid Phase Methanol Laporte Process Development Unit. (Task 2.2: Alternate Catalyst Run E-6 and Catalyst Activity Maintenance Run E-7).

  15. Tribal Climate Change Webinars: BIA's Climate Change Competitive...

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

    Tribal Climate Change Webinars: BIA's Climate Change Competitive Award Process Overview Tribal Climate Change Webinars: BIA's Climate Change Competitive Award Process Overview...

  16. CONFIGURATION CHANGE PROPOSAL (CCP)

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

    Yes (If required, firewall and F5 NAT changes can be addressed to HQNST@hq.doe.gov.)| | Supporting Information: (You must complete all of this section before the DNS change request ...

  17. ARM - Climate Change

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Climate Change A Student's Guide to Global Climate Change ...

  18. ADMINISTRATIVE CHANGE TO

    National Nuclear Security Administration (NNSA)

    450.2 Admin Change 1 1 1-27-15 ADMINISTRATIVE CHANGE TO NNSA SD 450.2 - Functions, Responsibilities, and Authorities (FRA) Document for Safety Management Locations of Changes: Page Paragraph Changed To Title Bottom Office of Safety and Health Office of Safety, Infrastructure, and Operations 1 1 This SD is issued to comply with the Secretary's direction concerning safety management responsibilities and assigns safety responsibilities and authorities described in the most recent version of DOE O

  19. INJECTION PROFILE MODIFICATION IN A HOT, DEEP MINNELUSA WATER INJECTION PROJECT

    SciTech Connect (OSTI)

    Lyle A. Johnson Jr.

    2001-09-01

    As oil fields in the United States age, production enhancements and modifications will be needed to increase production from deeper and hotter oil reservoirs. New techniques and products must be tested in these areas before industry will adapt them as common practice. The Minnelusa fields of northeastern Wyoming are relatively small, deep, hot fields that have been developed in the past ten to twenty years. As part of the development, operators have established waterfloods early in the life of the fields to maximize cumulative oil production. However, channeling between injectors and producers does occur and can lead to excessive water production and bypassed oil left in the reservoir. The project evaluated the use of a recently developed, high-temperature polymer to modify the injection profiles in a waterflood project in a high-temperature reservoir. The field is the Hawk Point field in Campbell County, Wyoming. The field was discovered in 1986 and initially consisted of eight producing wells with an average depth of 11,500 feet and a temperature of 260 F (127 C). The polymer system was designed to plug the higher permeable channels and fractures to provide better conformance, i.e. sweep efficiency, for the waterflood. The project used a multi-well system to evaluate the treatment. Injection profile logging was used to evaluate the injection wells both before and after the polymer treatment. The treatment program was conducted in January 2000 with a treatment of the four injection wells. The treatment sizes varied between 500 bbl and 3,918 bbl at a maximum allowable pressure of 1,700 psig. Injection in three of the wells was conducted as planned. However, the injection in the fourth well was limited to 574 bbl instead of the planned 3,750 bbl because of a rapid increase in injection pressure, even at lower than planned injection rates. Following completion of polymer placement, the injection system was not started for approximately one week to permit the gel to set. The system then returned to operation as before the test with no major change in the fieldwide injection. The injection and production rates for the field were monitored for approximately one year to give the production side of the system time to stabilize. The polymer treatment conducted on the injection wells in Hawk Point is believed to be the largest treatment of a hot, deep reservoir to date. These injection well treatments did produce some change in the injection profile of the injection wells. However, it is very disappointing that there was no significant improvement in the performance of the field. There was no noticeable reduction in the water production, the water-oil ratio (WOR), or an increase in oil production. The cosponsor has determined that the field is currently at its economic limit because of the high cost of this deep operation and the continual downhole problems. A restructuring of the injection-production pattern is presently being done to prolong the life of the field.

  20. A Comparison of Modifications to MELCOR versions 1.8.2 and 1.8.6 for ITER Safety Analysis

    SciTech Connect (OSTI)

    B. J. Merrill; P. W. Humrickhouse

    2010-06-01

    During the Engineering Design Activity of the International Thermonuclear Experimental Reactor (ITER), the MELCOR 1.8.2 code was selected as one of several codes to be used to perform ITER safety analyses [1]. MELCOR was chosen because it has the capability of predicting coolant pressure, temperature, mass flow rate, and radionuclide and aerosol transport in nuclear facilities and reactor cooling systems. MELCOR can also predict structural temperatures (e.g. first wall, blanket, divertor, and vacuum vessel) resulting from energy produced by radioactive decay heat and/or chemical reactions (oxidation). The Idaho National Laboratory (INL) Fusion Safety Program (FSP) made fusion specific modifications to the MELCOR 1.8.2 code [2-6], including models for water freezing, air condensation, beryllium, carbon, and tungsten oxidation in steam and air environments, flow boiling in coolant loops, and radiation in enclosures, that allowed MELCOR to assess the thermal hydraulic response of ITER cooling systems and the transport of radionuclides as aerosols during accident conditions. Recently, the ITER International Organization (IO) used a “pedigreed” version of MELCOR 1.8.2 [7] to perform accident analyses for ITER’s “Rapport Préliminaire de Sûreté” (Report Preliminary on Safety - RPrS). The MELCOR thermal-hydraulics code [8] is currently under development at the Sandia National Laboratory (SNL) for the US Nuclear Regulatory Commission (NRC). MELCOR is used to model the progression of severe accidents in light water fission reactors. Because MELCOR has undergone many improvements between version 1.8.2 and 1.8.6, the INL FSP decided to introduce fusion modifications into MELCOR 1.8.6, and thereby produce a version of MELCOR 1.8.6 with similar capabilities to the pedigreed version of MELCOR 1.8.2 used for the ITER RPrS. We have applied this version of MELCOR 1.8.6 to the same set of problems used in the MELCOR 1.8.2 pedigree analysis [7]. Section 2 describes a non-regression analysis that involves comparing the results from the modified version of MELCOR 1.8.6 against those predicted by the original, unmodified version of MELCOR 1.8.6. The purpose of this non-regression analysis is to demonstrate that the modifications made to the MELCOR 1.8.6 code do not drastically alter the intended functions of the MELCOR base code, and if they do to explain why the departure occurs and if the change is needed. The analysis was performed using the demonstration problem that came with the MELCOR 1.8.6 source distribution. Section 3 makes a comparison between the pedigreed version of MELCOR 1.8.2 and the new modified version of MELCOR 1.8.6 on a set of accident problems used by the ITER Joint Central Team (JCT) in the Generic Site Safety Report (GSSR) [9]. Finally, in section 4, the two versions of the code are compared on a series of developmental test problems described in the change documents [2-4, 6].

  1. Infrastructure Institutional Change Principle

    Broader source: Energy.gov [DOE]

    Research shows that changes in infrastructure prompt changes in behavior (for better or worse). Federal agencies can modify their infrastructure to promote sustainability-oriented behavior change, ideally in ways that make new behaviors easier and more desirable to follow than existing patterns of behavior.

  2. Microsoft Word - Class 1 PMN_Change_in_the_DOE_CBFO_Manager_9-30-2015_Rev_11_edited_for_signature

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Chief Hazardous Waste Bureau Department of Energy Carlsbad Field Office P. 0 . Box 3090 Carlsbad, New Mexico 88221 o tr o a 2o1s New Mexico Environment Department 2905 Rodeo Park Drive East, Building 1 Santa Fe, New Mexico 87505-6303 Subject: Class 1 Permit Modification Notification to the Waste Isolation Pilot Plant Hazardous Waste Facility Perm it Number: NM4890139088-TSDF Dear Mr. Kieling: Enclosed is the following Class 1 Permit Modification Notification: * Change in the Department of

  3. WTP Contract Section D Contract No. DE-AC27-01RV14136 Conformed Thru Modification No. A143

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    D Contract No. DE-AC27-01RV14136 Conformed Thru Modification No. A143 D - i SECTION D PACKAGING AND MARKING WTP Contract Section D Contract No. DE-AC27-01RV14136 Conformed Thru Modification No. A143 D - ii SECTION D PACKAGING AND MARKING TABLE OF CONTENTS Section Clauses Page D.1 PACKAGING .................................................................................................................................... 1 D.2 MARKING

  4. Tank Operations Contract Section J Contract No. DE-AC27-08RV14800 Modification No. 280

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    J Contract No. DE-AC27-08RV14800 Modification No. 280 J.4-1 SECTION J, ATTACHMENT J.4 PERFORMANCE EVALUATION AND MEASUREMENT PLAN (PEMP) Tank Operations Contract Section J Contract No. DE-AC27-08RV14800 Modification No. 280 J.4-3 TABLE OF CONTENTS Page A. INTRODUCTION ............................................................................................................... 4 B. REFERENCES

  5. Recent DOE Directives Changes

    Broader source: Energy.gov [DOE]

    On September 1, 2009, the Department of Energy (DOE) manuals were revised and issued to correspond with the following recent Contractor Requirements Documents (CRDs) changes to the following Directives: DOE M 205.1-8 Administrative Change 1—Cyber Security Incident Management Manual; DOE M 205.1-7 Administrative Change 1—Security Controls for Unclassified Information Systems Manual; DOE M 205.1-6 Administrative Change 1—Media Sanitization Manual; DOE M 205.1-5 Administrative Change 1—Cyber Security Process Requirements Manual

  6. Modulation of farnesoid X receptor results in post-translational modification of poly (ADP-ribose) polymerase 1 in the liver

    SciTech Connect (OSTI)

    Zhu, Yan; Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, KS ; Li, Guodong; Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, KS ; Dong, Yafeng; Zhou, Helen H.; Kong, Bo; Aleksunes, Lauren M.; Richardson, Jason R.; Li, Fei; Guo, Grace L.

    2013-01-15

    The farnesoid X receptor (FXR) is a bile acid-activated transcription factor belonging to the nuclear receptor superfamily. FXR deficiency in mice results in cholestasis, metabolic disorders, and tumorigenesis in liver and intestine. FXR is known to contribute to pathogenesis by regulating gene transcription; however, changes in the post-transcriptional modification of proteins associated with FXR modulation have not been determined. In the current study, proteomic analysis of the livers of wild-type (WT) and FXR knockout (FXR-KO) mice treated with a FXR synthetic ligand or vehicle was performed. The results identified five proteins as novel FXR targets. Since FXR deficiency in mice leads to liver tumorigenesis, poly (ADP-ribose) polymerase family, member 1 (Parp1) that is important for DNA repair, was validated in the current study by quantitative real-time PCR, and 1- and 2-dimensional gel electrophoresis/western blot. The results showed that Parp1 mRNA levels were not altered by FXR genetic status or by agonist treatment. However, total Parp1 protein levels were increased in FXR-KO mice as early as 3 month old. Interestingly, total Parp1 protein levels were increased in WT mice in an age-dependent manner (from 3 to 18 months), but not in FXR-KO mice. Finally, activation of FXR in WT mice resulted in reduction of phosporylated Parp1 protein in the liver without affecting total Parp1 protein levels. In conclusion, this study reveals that FXR genetic status and agonist treatment affects basal levels and phosphorylation state of Parp1, respectively. These alterations, in turn, may be associated with the hepatobiliary alterations observed in FXR-KO mice and participate in FXR agonist-induced protection in the liver. -- Highlights: ? Proteomic analysis identified novel FXR targets. ? FXR modification altered post-translational modification of the Parp1 protein. ? Altered Parp1 function may contribute to mechanisms of FXR regulation of liver functions.

  7. The use Na, Li, K cations for modification of ZSM-5 zewolite to control hydrocarbon cold-start emission

    SciTech Connect (OSTI)

    Golubeva V.; Rohatgi U.; Korableva, A.; Anischenko, O.; Kustov, L.; Nissenbaum, V; Viola, M.B.

    2012-08-29

    This paper addresses the problem of controlling hydrocarbon emissions from cold-start of engines by investigating the adsorbents which could adsorb the hydrocarbons at cold temperatures and hold them to 250-300 ?. The materials, that has been studied, are based on the modification of ZSM-5 (SiO{sub 2}/Al{sub 2}O{sub 3} = 35) zeolite with Li, K, Na cations. It has been shown that the introduction of Li, Na and K in an amount that is equivalent to the content of Al in zeolite results in occurrence of toluene temperature desorption peaks at high-temperatures. The toluene temperature desorption curves for 5%Li-ZSM-5 and 2.3%Na-ZSM-5 zeolites are identical and have peak toluene desorption rate between 200 to 400 ?. Upon analysis of toluene adsorption isotherms for 2.3%Na-ZSM-5 and 5%Li-ZSM-5, it was concluded that the toluene diffusion inside of the modified zeolites channels is extremely slow and the sorption capacity of 2.3%Na-ZSM-5 is higher than with 5%Li-ZSM-5. The 2.3%Na-ZSM-5 didn't change toluene temperature programmed desorption (TPD) rate of curve after the treatment in environment with 10% ?{sub 2}? at 750-800 ? for about 28 h. The 2.3%Na-ZSM-5 zeolite is very promising as adsorbent to control the cold-start hydrocarbon emissions.

  8. Investigating the reversibility of structural modifications of LixNiyMnzCo1-y-zO₂ cathode materials during initial charge/discharge, at multiple length scales

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Hwang, Sooyeon; Bak, Seong -Min; Kim, Seung Min; Chung, Kyung Yoon; Chang, Wonyoung

    2015-08-11

    In this work, we investigate the structural modifications occurring at the bulk, subsurface, and surface scales of LixNiyMnzCo1-y-zO₂ (NMC; y, z = 0.8, 0.1 and 0.4, 0.3, respectively) cathode materials during the initial charge/discharge. Various analytical tools, such as X-ray diffraction, selected-area electron diffraction, electron energy-loss spectroscopy, and high-resolution electron microscopy, are used to examine the structural properties of the NMC cathode materials at the three different scales. Cut-off voltages of 4.3 and 4.8 V are applied during the electrochemical tests as the normal and extreme conditions, respectively. The high-Ni-content NMC cathode materials exhibit unusual behaviors, which is deviate frommore » the general redox reactions during the charge or discharge. The transition metal (TM) ions in the high-Ni-content NMC cathode materials, which are mostly Ni ions, are reduced at 4.8 V, even though TMs are usually oxidized to maintain charge neutrality upon the removal of Li. It was found that any changes in the crystallographic and electronic structures are mostly reversible down to the sub-surface scale, despite the unexpected reduction of Ni ions. However, after the discharge, traces of the phase transitions remain at the edges of the NMC cathode materials at the scale of a few nanometers (i.e., surface scale). This study demonstrates that the structural modifications in NMC cathode materials are induced by charge as well as discharge at multiple length scales. These changes are nearly reversible after the first cycle, except at the edges of the samples, which should be avoided because these highly localized changes can initiate battery degradation.« less

  9. OT SPECIFIED I OTHER AMENDMENT OF SOLICITATI ON/MODIFICATION OF CONTRACT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    OT SPECIFIED I OTHER AMENDMENT OF SOLICITATI ON/MODIFICATION OF CONTRACT 2 AM EN DMENT/MODIFIC ATION NO 1 B 6 ISSUED BY CODE Oak UrJge u . s . De arcment of Energ y P . O. Box 2001 Oak Ridge TN 37831 3 EFFccnv E DA E Sep Bl c..c.k _6C 00518 8 NAME AND ADDRESS OF CONTRACTOR INo ~/e.' CO Ull/y. Sial. and ZIP Cod.) OAK RIDGE A SOCIATED Ul IVERSITIES , P . O. BOX 117 OAK R-DGE Ttl 37830-6218 N . CODE 0411522 24 FAC ILITY CODE 1 CONTRACT 10 CODE 4 R OUISITIONIPU RCHASr. REO NO IuS lL 7 ADMIN ISTER ED

  10. Contract Number DE-AC27-08RV14800 Continuation Page, Modification 138

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract Number DE-AC27-08RV14800 Continuation Page, Modification 138 Attachment 1 DE-AC27-08RV14800, MODIFICATION 138 Replacement Pages (Total: One Hundred Twenty-Five (125) including this Cover Page) * Section H, Pages H-4 and H-24 * Section J, Table of Contents, Page J-1 * Section J, Attachment J.2, Pages J.2-4 thru J.2-7 and J.2.9 * Section J, Attachment J.10, Pages J.10-1 thru J.10-20 * Section J, Attachment J.13, Pages J.13-1 thru J.13-29 * Section J, Attachment J.14, Pages J.14-1 thru

  11. Hardwired Control Changes For NSTX DC Power Feeds

    SciTech Connect (OSTI)

    Ramakrishnan, S.

    2013-06-28

    The National Spherical Torus Experiment (NSTX) has been designed and installed in the existing facilities at Princeton Plasma Physics Laboratory (PPPL). Most of the hardware, plant facilities, auxiliary sub-systems, and power systems originally used for the Tokamak Fusion Test Reactor (TFTR) have been used with suitable modifications to reflect NSTX needs. The original TFTR Hardwired Control System (HCS) with electromechanical relays was used for NSTX DC Power loop control and protection during NSTX operations. As part of the NSTX Upgrade, the HCS is being changed to a PLC-based system with the same control logic. This paper gives a description of the changeover to the new PLC-based system __________________________________________________

  12. Lab announces security changes

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Lab announces security changes Lab announces security changes The Laboratory is implementing several changes to its security procedures as the result of a recent security assessment conducted jointly by the Department of Defense and Department of Energy. February 23, 2012 Aerial view of Los Alamos National Laboratory Aerial view of Los Alamos National Laboratory. Contact Kevin Roark Communications Office (505) 665-9202 Email LOS ALAMOS, New Mexico, February 23, 2012-Los Alamos National

  13. Climate Change Response

    Energy Savers [EERE]

    the Interior Climate Change Response "From the Everglades to the Great Lakes to Alaska and everywhere in between, climate change is a leading threat to natural and cultural resources across America, and tribal communities are often the hardest hit by severe weather events such as droughts, floods and wildfires" - Secretary of the Interior Sally Jewell "Impacts of climate change are increasingly evident for American Indian and Alaska Native communities and, in some cases, threaten

  14. Climate change cripples forests

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Climate change cripples forests Climate change cripples forests A team of scientists concluded that in the warmer and drier Southwest of the near future, widespread tree mortality will cause forest and species distributions to change substantially. October 1, 2012 A dead pinon at the edge of the Grand Canyon, harbinger of the future for trees in the Southwest United States. Photo courtesy A. Park Williams. A dead pinon at the edge of the Grand Canyon, harbinger of the future for trees in the

  15. Modifications to WRFs dynamical core to improve the treatment of moisture

    Office of Scientific and Technical Information (OSTI)

    for large-eddy simulations (Journal Article) | SciTech Connect WRFs dynamical core to improve the treatment of moisture for large-eddy simulations Citation Details In-Document Search Title: Modifications to WRFs dynamical core to improve the treatment of moisture for large-eddy simulations Yamaguchi and Feingold (2012) note that the cloud fields in their large-eddy simulations (LESs) of marine stratocumulus using the Weather Research and Forecasting (WRF) model exhibit a strong sensitivity

  16. BuD, a helixloophelix DNA-binding domain for genome modification

    SciTech Connect (OSTI)

    Stella, Stefano; Molina, Rafael; Lpez-Mndez, Blanca; Juillerat, Alexandre; Bertonati, Claudia; Daboussi, Fayza; Campos-Olivas, Ramon; Duchateau, Phillippe; Montoya, Guillermo

    2014-07-01

    Crystal structures of BurrH and the BurrHDNA complex are reported. DNA editing offers new possibilities in synthetic biology and biomedicine for modulation or modification of cellular functions to organisms. However, inaccuracy in this process may lead to genome damage. To address this important problem, a strategy allowing specific gene modification has been achieved through the addition, removal or exchange of DNA sequences using customized proteins and the endogenous DNA-repair machinery. Therefore, the engineering of specific proteinDNA interactions in protein scaffolds is key to providing toolkits for precise genome modification or regulation of gene expression. In a search for putative DNA-binding domains, BurrH, a protein that recognizes a 19 bp DNA target, was identified. Here, its apo and DNA-bound crystal structures are reported, revealing a central region containing 19 repeats of a helixloophelix modular domain (BurrH domain; BuD), which identifies the DNA target by a single residue-to-nucleotide code, thus facilitating its redesign for gene targeting. New DNA-binding specificities have been engineered in this template, showing that BuD-derived nucleases (BuDNs) induce high levels of gene targeting in a locus of the human haemoglobin ? (HBB) gene close to mutations responsible for sickle-cell anaemia. Hence, the unique combination of high efficiency and specificity of the BuD arrays can push forward diverse genome-modification approaches for cell or organism redesign, opening new avenues for gene editing.

  17. Surface modification to improve fireside corrosion resistance of Fe-Cr ferritic steels

    DOE Patents [OSTI]

    Park, Jong-Hee (Clarendon Hills, IL); Natesan, Krishnamurti (Naperville, IL); Rink, David L. (Mokena, IL)

    2010-03-16

    An article of manufacture and a method for providing an Fe--Cr ferritic steel article of manufacture having a surface layer modification for corrosion resistance. Fe--Cr ferritic steels can be modified to enhance their corrosion resistance to liquid coal ash and other chemical environments, which have chlorides or sulfates containing active species. The steel is modified to form an aluminide/silicide passivating layer to reduce such corrosion.

  18. Climate Change Webinar Series

    Broader source: Energy.gov [DOE]

    Experts will provide findings from the Quadrennial Energy Review (QER) and outline federal energy policy objectives, proposals, and actions as they relate to climate change and resilience for...

  19. Chang-F-L

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Droplet Size Distribution on the Determination of Cloud Droplet Effective Radius F.-L. Chang and Z. Li ESSICDepartment of Meteorology University of Maryland College Park,...

  20. change_address_111609

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    CHANGE OF ADDRESS and EMERGENCY NOTIFICATION TO: HUMAN RESOURCES DATE: Z Social Security Print First Name Print Middle Name or Initial Print Last Name (Currently in Payroll...

  1. Climate Change, Drought & Environment

    Broader source: Energy.gov [DOE]

    Afternoon Plenary Session: Current Trends in the Advanced Bioindustry Climate Change, Drought, and Environment—Michael Champ, Executive Director, The Sustainable Water Challenge

  2. Change Control Management Guide

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2011-07-29

    The Guide provides a suggested approach and uniform guidance for managing project and contract changes through applying the requirements of DOE O 413.3B. No cancellation.

  3. Tuning electron transport through a single molecular junction by bridge modification

    SciTech Connect (OSTI)

    Li, Xiao-Fei Qiu, Qi; Luo, Yi

    2014-07-07

    The possibility of controlling electron transport in a single molecular junction represents the ultimate goal of molecular electronics. Here, we report that the modification of bridging group makes it possible to improve the performance and obtain new functions in a single cross-conjugated molecular junction, designed from a recently synthesized bipolar molecule bithiophene naphthalene diimide. Our first principles results show that the bipolar characteristic remains after the molecule was modified and sandwiched between two metal electrodes. Rectifying is the intrinsic characteristic of the molecular junction and its performance can be enhanced by replacing the saturated bridging group with an unsaturated group. A further improvement of the rectifying and a robust negative differential resistance (NDR) behavior can be achieved by the modification of unsaturated bridge. It is revealed that the modification can induce a deviation angle about 4° between the donor and the acceptor π-conjugations, making it possible to enhance the communication between the two π systems. Meanwhile, the low energy frontier orbitals of the junction can move close to the Fermi level and encounter in energy at certain biases, thus a transport channel with a considerable transmission can be formed near the Fermi level only at a narrow bias regime, resulting in the improvement of rectifying and the robust NDR behavior. This finding could be useful for the design of single molecular devices.

  4. Liquid phase methanol LaPorte process development unit: Modification, operation, and support studies

    SciTech Connect (OSTI)

    Not Available

    1990-10-23

    The objectives of this program are to implement and test the process improvements identified through the engineering studies of the current program to demonstrate the capability of long-term catalyst activity maintenance, and to perform process and design engineering work that can be applied to a scaled-up Liquid Phase Methanol (LPMEOH) facility. An optional series of PDU runs is offered to extend the testing of the process improvements. A parallel research program will be performed to enhance the LPMEOH technical data base to improve the likelihood of commercialization of the LPMEOH process. Activities this quarter include: Flow sheet development for La Porte PDU modifications continues. A preliminary P ID review was completed and flow sheet modifications were identified and are being incorporated. A preliminary hazards review was completed on 22 May. Some minor flow sheet modifications resulted and a number of action items were identified. The most significant action item is to develop a materials reactivity and compatibility grid for the different alcohols, ethers, and esters which will be produced at the PDU. Heat and material balances were completed for the maximum production case of the mixed DME/MEOH synthesis campaign. An improved rate expression was developed. 1 fig.

  5. 10 CFR 830 Major Modification Determination for Advanced Test Reactor LEU Fuel Conversion

    SciTech Connect (OSTI)

    Boyd D. Christensen; Michael A. Lehto; Noel R. Duckwitz

    2012-05-01

    The Advanced Test Reactor (ATR), located in the ATR Complex of the Idaho National Laboratory (INL), was constructed in the 1960s for the purpose of irradiating reactor fuels and materials. Other irradiation services, such as radioisotope production, are also performed at ATR. The ATR is fueled with high-enriched uranium (HEU) matrix (UAlx) in an aluminum sandwich plate cladding. The National Nuclear Security Administration Global Threat Reduction Initiative (GTRI) strategic mission includes efforts to reduce and protect vulnerable nuclear and radiological material at civilian sites around the world. Converting research reactors from using HEU to low-enriched uranium (LEU) was originally started in 1978 as the Reduced Enrichment for Research and Test Reactors (RERTR) Program under the U.S. Department of Energy (DOE) Office of Science. Within this strategic mission, GTRI has three goals that provide a comprehensive approach to achieving this mission: The first goal, the driver for the modification that is the subject of this determination, is to convert research reactors from using HEU to LEU. Thus the mission of the ATR LEU Fuel Conversion Project is to convert the ATR and Advanced Test Reactor Critical facility (ATRC) (two of the six U.S. High-Performance Research Reactors [HPRR]) to LEU fuel by 2017. The major modification criteria evaluation of the project pre-conceptual design identified several issues that lead to the conclusion that the project is a major modification.

  6. Commitment Institutional Change Principle

    Broader source: Energy.gov [DOE]

    Commitment can be a crucial element that helps federal agencies inject and emphasize sustainability in their organizational culture. Institutions and people change when they have made definite commitments to change, especially when those commitments relate to future conditions. Research shows that explicit commitments improve the rate at which people adopt energy-efficient behaviors.

  7. Modification No. M081 BWXT Pantex, LLC Contract No. DE-AC04-00AL66620

    National Nuclear Security Administration (NNSA)

    1 BWXT Pantex, LLC Contract No. DE-AC04-00AL66620 Page 2 of 4 1. This modification deletes Appendix D entitled, "Key Personnel," dated August 23, 2004, that is currently in Section J of the Contract and replaces it with Attachment 1, Appendix D entitled, "Key Personnel," dated December 23, 2004, of this Modification. 2. This modification deletes Contract Clause I 63. entitled, "DEAR 952.204-2 Security (SEP 1997)(Modified)," and replaces it with Contract Clause I 63.

  8. Harold Cofer and the COLEX process, part 4 ? Changes to support...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Nick about holding the speed record going from inside Alpha 4 or Alpha 5 to the cooling tower areas. He always wore high top galoshes, especially in Alpha 5 since there was...

  9. Economic and environmental impacts of proposed changes to Clean Water Act thermal discharge requirements

    SciTech Connect (OSTI)

    Veil, J.A.

    1994-06-01

    This paper examines the economic and environmental impact to the power industry of limiting thermal mixing zones to 1000 feet and eliminating the Clean Water Act {section}316(a) variance. Power companies were asked what they would do if these two conditions were imposed. Most affected plants would retrofit cooling towers and some would retrofit diffusers. Assuming that all affected plants would proportionally follow the same options as the surveyed plants, the estimated capital cost of retrofitting cooling towers or diffusers at all affected plants exceeds $20 billion. Since both cooling towers and diffusers exert an energy penalty on a plant`s output, the power companies must generate additional power. The estimated cost of the additional power exceeds $10 billion over 20 years. Generation of the extra power would emit over 8 million tons per year of additional carbon dioxide. Operation of the new cooling towers would cause more than 1.5 million gallons per minute of additional evaporation.

  10. Changing Climate Doug Sisterson Environmental ...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Change Minds about our Changing Climate Doug Sisterson Environmental Science Division, ... We are regularly confronted with arguments that deny climate change is happening or is a ...

  11. c-Myc alters substrate utilization and O-GlcNAc protein posttranslational modifications without altering cardiac function during early aortic constriction

    SciTech Connect (OSTI)

    Ledee, Dolena; Smith, Lincoln; Bruce, Margaret; Kajimoto, Masaki; Isern, Nancy; Portman, Michael A.; Olson, Aaron K.; Bertrand, Luc

    2015-08-12

    Pressure overload cardiac hypertrophy alters substrate metabolism. Prior work showed that myocardial inactivation of c-Myc (Myc) attenuated hypertrophy and decreased expression of metabolic genes after aortic constriction. Accordingly, we hypothesize that Myc regulates substrate preferences for the citric acid cycle during pressure overload hypertrophy from transverse aortic constriction (TAC) and that these metabolic changes impact cardiac function and growth. To test this hypothesis, we subjected mice with cardiac specific, inducible Myc inactivation (MycKO-TAC) and non-transgenic littermates (Cont-TAC) to transverse aortic constriction (TAC; n=7/group). A separate group underwent sham surgery (Sham, n=5). After two weeks, function was measured in isolated working hearts along with substrate fractional contributions to the citric acid cycle by using perfusate with 13C labeled mixed fatty acids, lactate, ketone bodies and unlabeled glucose and insulin. Cardiac function was similar between groups after TAC although +dP/dT and -dP/dT trended towards improvement in MycKO-TAC versus Cont-TAC. Compared to Sham, Cont-TAC had increased free fatty acid fractional contribution with a concurrent decrease in unlabeled (predominately glucose) contribution. The changes in free fatty acid and unlabeled fractional contributions were abrogated by Myc inactivation during TAC (MycKO-TAC). Additionally, protein posttranslational modification by O-GlcNAc was significantly greater in Cont-TAC versus both Sham and MycKO-TAC. Lastly, Myc alters substrate preferences for the citric acid cycle during early pressure overload hypertrophy without negatively affecting cardiac function. Myc also affects protein posttranslational modifications by O-GlcNAc during hypertrophy.

  12. c-Myc alters substrate utilization and O-GlcNAc protein posttranslational modifications without altering cardiac function during early aortic constriction

    SciTech Connect (OSTI)

    Ledee, Dolena R.; Smith, Lincoln; Bruce, Margaret; Kajimoto, Masaki; Isern, Nancy G.; Portman, Michael A.; Olson, Aaron

    2015-08-12

    Pressure overload cardiac hypertrophy alters substrate metabolism. Prior work showed that myocardial inactivation of c-Myc (Myc) attenuated hypertrophy and decreased expression of metabolic genes after aortic constriction. Accordingly, we hypothesize that Myc regulates substrate preferences for the citric acid cycle during pressure overload hypertrophy from transverse aortic constriction (TAC) and that these metabolic changes impact cardiac function and growth. To test this hypothesis, we subjected mice with cardiac specific, inducible Myc inactivation (MycKO-TAC) and non-transgenic littermates (Cont-TAC) to transverse aortic constriction (TAC; n=7/group). A separate group underwent sham surgery (Sham, n=5). After two weeks, function was measured in isolated working hearts along with substrate fractional contributions to the citric acid cycle by using perfusate with 13C labeled mixed fatty acids, lactate, ketone bodies and unlabeled glucose and insulin. Cardiac function was similar between groups after TAC although +dP/dT and -dP/dT trended towards improvement in MycKO-TAC versus Cont-TAC. Compared to Sham, Cont-TAC had increased free fatty acid fractional contribution with a concurrent decrease in unlabeled (predominately glucose) contribution. The changes in free fatty acid and unlabeled fractional contributions were abrogated by Myc inactivation during TAC (MycKO-TAC). Additionally, protein posttranslational modification by O-GlcNAc was significantly greater in Cont-TAC versus both Sham and MycKO-TAC. In conclusion, Myc alters substrate preferences for the citric acid cycle during early pressure overload hypertrophy without negatively affecting cardiac function. Myc also affects protein posttranslational modifications by O-GlcNAc during hypertrophy.

  13. c-Myc alters substrate utilization and O-GlcNAc protein posttranslational modifications without altering cardiac function during early aortic constriction

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Ledee, Dolena; Smith, Lincoln; Bruce, Margaret; Kajimoto, Masaki; Isern, Nancy; Portman, Michael A.; Olson, Aaron K.; Bertrand, Luc

    2015-08-12

    Pressure overload cardiac hypertrophy alters substrate metabolism. Prior work showed that myocardial inactivation of c-Myc (Myc) attenuated hypertrophy and decreased expression of metabolic genes after aortic constriction. Accordingly, we hypothesize that Myc regulates substrate preferences for the citric acid cycle during pressure overload hypertrophy from transverse aortic constriction (TAC) and that these metabolic changes impact cardiac function and growth. To test this hypothesis, we subjected mice with cardiac specific, inducible Myc inactivation (MycKO-TAC) and non-transgenic littermates (Cont-TAC) to transverse aortic constriction (TAC; n=7/group). A separate group underwent sham surgery (Sham, n=5). After two weeks, function was measured in isolated workingmore » hearts along with substrate fractional contributions to the citric acid cycle by using perfusate with 13C labeled mixed fatty acids, lactate, ketone bodies and unlabeled glucose and insulin. Cardiac function was similar between groups after TAC although +dP/dT and -dP/dT trended towards improvement in MycKO-TAC versus Cont-TAC. Compared to Sham, Cont-TAC had increased free fatty acid fractional contribution with a concurrent decrease in unlabeled (predominately glucose) contribution. The changes in free fatty acid and unlabeled fractional contributions were abrogated by Myc inactivation during TAC (MycKO-TAC). Additionally, protein posttranslational modification by O-GlcNAc was significantly greater in Cont-TAC versus both Sham and MycKO-TAC. Lastly, Myc alters substrate preferences for the citric acid cycle during early pressure overload hypertrophy without negatively affecting cardiac function. Myc also affects protein posttranslational modifications by O-GlcNAc during hypertrophy.« less

  14. Change Control Management Guide

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2011-07-29

    The Guide provides a suggested approach and uniform guidance for managing project and contract changes through applying the requirements of DOE O 413.3B. Admin Chg 1 dated 10-22-2015.

  15. Oversight and Change

    National Nuclear Security Administration (NNSA)

    %2A en Oversight and Change http:nnsa.energy.govourmissionoversightandchange

    Page...

  16. Climate Change Adaptation Planning

    Broader source: Energy.gov [DOE]

    This course provides an introduction to planning for climate change impacts, with examples of tribes that have been going through the adaptation planning process. The course is intended for tribal...

  17. Oversight and Change

    National Nuclear Security Administration (NNSA)

    %2A en Oversight and Change http:www.nnsa.energy.govourmissionoversightandchange

    Page...

  18. Feasibility Study of Economics and Performance of Solar Photovoltaics at the Tower Road Site in Aurora, Colorado. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites

    SciTech Connect (OSTI)

    Van Geet, O.; Mosey, G.

    2013-03-01

    The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Tower Road site in Aurora, Colorado, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site. This study did not assess environmental conditions at the site.

  19. Mining proteomic data to expose protein modifications in Methanosarcina mazei strain Gö1

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Leon, Deborah R.; Ytterberg, A. Jimmy; Boontheung, Pinmanee; Kim, Unmi; Loo, Joseph A.; Gunsalus, Robert P.; Ogorzalek Loo, Rachel R.

    2015-03-05

    Proteomic tools identify constituents of complex mixtures, often delivering long lists of identified proteins. The high-throughput methods excel at matching tandem mass spectrometry data to spectra predicted from sequence databases. Unassigned mass spectra are ignored, but could, in principle, provide valuable information on unanticipated modifications and improve protein annotations while consuming limited quantities of material. Strategies to “mine” information from these discards are presented, along with discussion of features that, when present, provide strong support for modifications. In this study we mined LC-MS/MS datasets of proteolytically-digested concanavalin A pull down fractions from Methanosarcina mazei Gö1 cell lysates. Analyses identified 154more » proteins. Many of the observed proteins displayed post-translationally modified forms, including O-formylated and methyl-esterified segments that appear biologically relevant (i.e., not artifacts of sample handling). Interesting cleavages and modifications (e.g., S-cyanylation and trimethylation) were observed near catalytic sites of methanogenesis enzymes. Of 31 Methanosarcina protein N-termini recovered by concanavalin A binding or from a previous study, only M. mazei S-layer protein MM1976 and its M. acetivorans C2A orthologue, MA0829, underwent signal peptide excision. Experimental results contrast with predictions from algorithms SignalP 3.0 and Exprot, which were found to over-predict the presence of signal peptides. Proteins MM0002, MM0716, MM1364, and MM1976 were found to be glycosylated, and employing chromatography tailored specifically for glycopeptides will likely reveal more. This study supplements limited, existing experimental datasets of mature archaeal N-termini, including presence or absence of signal peptides, translation initiation sites, and other processing. Methanosarcina surface and membrane proteins are richly modified.« less

  20. 10 CFR 830 Major Modification Determination for Advanced Test Reactor RDAS and LPCIS Replacement

    SciTech Connect (OSTI)

    David E. Korns

    2012-05-01

    The replacement of the ATR Control Complex's obsolete computer based Reactor Data Acquisition System (RDAS) and its safety-related Lobe Power Calculation and Indication System (LPCIS) software application is vitally important to ensure the ATR remains available to support this national mission. The RDAS supports safe operation of the reactor by providing 'real-time' plant status information (indications and alarms) for use by the reactor operators via the Console Display System (CDS). The RDAS is a computer support system that acquires analog and digital information from various reactor and reactor support systems. The RDAS information is used to display quadrant and lobe powers via a display interface more user friendly than that provided by the recorders and the Control Room upright panels. RDAS provides input to the Nuclear Engineering ATR Surveillance Data System (ASUDAS) for fuel burn-up analysis and the production of cycle data for experiment sponsors and the generation of the Core Safety Assurance Package (CSAP). RDAS also archives and provides for retrieval of historical plant data which may be used for event reconstruction, data analysis, training and safety analysis. The RDAS, LPCIS and ASUDAS need to be replaced with state-of-the-art technology in order to eliminate problems of aged computer systems, and difficulty in obtaining software upgrades, spare parts, and technical support. The major modification criteria evaluation of the project design did not lead to the conclusion that the project is a major modification. The negative major modification determination is driven by the fact that the project requires a one-for-one equivalent replacement of existing systems that protects and maintains functional and operational requirements as credited in the safety basis.

  1. 10 CFR 830 Major Modification Determination for Emergency Firewater Injection System Replacement

    SciTech Connect (OSTI)

    Noel Duckwitz

    2011-05-01

    The continued safe and reliable operation of the ATR is critical to the Department of Energy (DOE) Office of Nuclear Energy (NE) mission. While ATR is safely fulfilling current mission requirements, a variety of aging and obsolescence issues challenge ATR engineering and maintenance personnel’s capability to sustain ATR over the long term. First documented in a series of independent assessments, beginning with an OA Environmental Safety and Health Assessment conducted in 2003, the issues were validated in a detailed Material Condition Assessment (MCA) conducted as a part of the ATR Life Extension Program in 2007.Accordingly, near term replacement of aging and obsolescent original ATR equipment has become important to ensure ATR capability in support of NE’s long term national missions. To that end, a mission needs statement has been prepared for a non-major system acquisition which is comprised of three interdependent sub-projects. The first project will replace the existent diesel-electrical bus (E-3), switchgear, and the fifty year old antiquated marine diesels with commercial power that is backed with safety-related emergency diesel generators (EDGs), switchgear, and uninterruptible power supply. The second project will replace the four, obsolete, original primary coolant pumps and motors. The third project, the subject of this major modification determination, will replace the current emergency firewater injection system (EFIS). The replacement water injection system will function as the primary emergency water injection system with the EFIS being retained as a defense-in-depth backup. Completion of this and the two other age-related projects (replacement of the ATR diesel bus (E-3) and switchgear and replacement of the existent aged primary coolant pumps and motors) will resolve major age-related operational issues plus make a significant contribution in sustaining the ATR safety and reliability profile. The major modification criteria evaluation of the project pre-conceptual design identified several issues that lead to the conclusion that the project is a major modification.

  2. Mining proteomic data to expose protein modifications in Methanosarcina mazei strain Gö1

    SciTech Connect (OSTI)

    Leon, Deborah R.; Ytterberg, A. Jimmy; Boontheung, Pinmanee; Kim, Unmi; Loo, Joseph A.; Gunsalus, Robert P.; Ogorzalek Loo, Rachel R.

    2015-03-05

    Proteomic tools identify constituents of complex mixtures, often delivering long lists of identified proteins. The high-throughput methods excel at matching tandem mass spectrometry data to spectra predicted from sequence databases. Unassigned mass spectra are ignored, but could, in principle, provide valuable information on unanticipated modifications and improve protein annotations while consuming limited quantities of material. Strategies to “mine” information from these discards are presented, along with discussion of features that, when present, provide strong support for modifications. In this study we mined LC-MS/MS datasets of proteolytically-digested concanavalin A pull down fractions from Methanosarcina mazei Gö1 cell lysates. Analyses identified 154 proteins. Many of the observed proteins displayed post-translationally modified forms, including O-formylated and methyl-esterified segments that appear biologically relevant (i.e., not artifacts of sample handling). Interesting cleavages and modifications (e.g., S-cyanylation and trimethylation) were observed near catalytic sites of methanogenesis enzymes. Of 31 Methanosarcina protein N-termini recovered by concanavalin A binding or from a previous study, only M. mazei S-layer protein MM1976 and its M. acetivorans C2A orthologue, MA0829, underwent signal peptide excision. Experimental results contrast with predictions from algorithms SignalP 3.0 and Exprot, which were found to over-predict the presence of signal peptides. Proteins MM0002, MM0716, MM1364, and MM1976 were found to be glycosylated, and employing chromatography tailored specifically for glycopeptides will likely reveal more. This study supplements limited, existing experimental datasets of mature archaeal N-termini, including presence or absence of signal peptides, translation initiation sites, and other processing. Methanosarcina surface and membrane proteins are richly modified.

  3. Tuning the Formations of Metal-Organic Frameworks by Modification of

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Ratio of Reactant, Acidity of Reaction System, and Use of a Secondary Ligand | Center for Gas SeparationsRelevant to Clean Energy Technologies | Blandine Jerome Tuning the Formations of Metal-Organic Frameworks by Modification of Ratio of Reactant, Acidity of Reaction System, and Use of a Secondary Ligand Previous Next List Qian Gao, Ya-Bo Xie, Jian-Rong Li, Da-Qiang Yuan, Audrey A. Yakovenko, Ji-Hong Sun, and Hong-Cai Zhou, Cryst. Growth Des., 2012, 12 (1), pp 281-288 DOI: 10.1021/cg201059d

  4. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

    National Nuclear Security Administration (NNSA)

    l PAGE 1 OF 3PAGES 2. AMENDMENT/MODIFICATION NO. I 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. I 5. PROJECT NO. (If applicable) 180 See Block 16 C 6.1SSUEDBY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy National Nuclear Security Administration Manager, Los Alamos Site Office 3747 West Jemez Road Los Alamos, NM 87544 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, state, ZIP Code) 9A. AMENDMENT OF SOLICITATION NO. Los Alamos National Security, LLC

  5. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

    National Nuclear Security Administration (NNSA)

    I PAGE 1 OF 1 PAGES 2. AMENDMENT/MODIFICATION NO. I 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REO. NO. I 5. PROJECT NO. (If applicable) 212 See Block 16 C 6.1SSUEDBY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy National Nuclear Security Administration Manager, Los Alamos Site Office 3747 West Jemez Road Los Alamos, NM 87544 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county. state, ZIP Code} 9A. AMENDMENT OF SOLICITATION NO. Los Alamos National Security, LLC

  6. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 11. CONTRACT ID CODE

    National Nuclear Security Administration (NNSA)

    I PAGE OF PAGES 1 I 2 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 15. PROJECT NO. (ff applicable) 0259 See Block 16C 6. ISSUED BY CODE 05003 7. ADMINISTERED BY (If other than Item 6) coDE 105003 NNSA/Los Alamos Site Office NNSA/Los Alamos Site Office u. s. Department of Energy u. s. Department of Energy NNSA/Los Alamos Site Office Los Alamos Site Off ice 3747 West Jemez Road 3747 West Jemez Road Los Alamos NM 87544 Los Alamos NM 87544 8. NAME AND ADDRESS OF

  7. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 11. CONTRACT ID CODE

    National Nuclear Security Administration (NNSA)

    l PAGE OF PAGES 1 I 3 2. AMENDMENT/MODIFICATION NO. See Block 16C 4. REQUISITION/PURCHASE REQ. NO. 15. PROJECT NO. (If applicable) 3. EFFECTIVE DA TE 0264 6. ISSUED BY CODE 05003 NNSA/Los Alamos Site Office U.S. Department of Energy NNSA/Los Alamos Site Office 3747 West Jemez Road Los Alamos NM 87544 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code) LOS ALAMOS NATIONAL SECURITY, LLC Attn: STEVE K. SHOOK P.O. BOX 1663, MS P222 LOS ALAMOS NM 875450001 CODE 175252894

  8. Microsoft Word - HABAdv#223_Life Cycle&TPA Modifications.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    3 Subject: Life Cycle Cost & Schedule Report of the Proposed Consent Decree & TPA Modifications Adopted: November 6, 2009 Page 1 November 6, 2009 Dave Brockman, Manager U.S. Department of Energy, Richland Operations P.O. Box 550 (A7-50) Richland, WA 99352 Shirley Olinger, Manager U.S. Department of Energy, Office of River Protection P.O. Box 450 (H6-60) Richland, WA 99352 Polly Zehm, Director Washington State Department of Ecology P.O. Box 47600 Olympia, WA 98504-7600 Michelle Pirzadeh,

  9. Procedure for developing biological input for the design, location, or modification of water-intake structures

    SciTech Connect (OSTI)

    Neitzel, D.A.; McKenzie, D.H.

    1981-12-01

    To minimize adverse impact on aquatic ecosystems resulting from the operation of water intake structures, design engineers must have relevant information on the behavior, physiology and ecology of local fish and shellfish. Identification of stimulus/response relationships and the environmental factors that influence them is the first step in incorporating biological information in the design, location or modification of water intake structures. A procedure is presented in this document for providing biological input to engineers who are designing, locating or modifying a water intake structure. The authors discuss sources of stimuli at water intakes, historical approaches in assessing potential/actual impact and review biological information needed for intake design.

  10. Contract No. DE-AC02-07CH11358 Contract Modification No. 0192

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract Modification No. 0192 Section J Appendix H ATTACHMENT J.8 APPENDIX H SMALL BUSINESS SUBCONTRACTING PLAN Applicable to the Operation of AMES Laboratory Contract No. DE-AC02-07CH11358 'I'Hv. Ames Laboratory CtNrlng M*t*rl*l* & En*rgy So/utlotJI U ~ S, 0 £ J 1 A HT.M!NT C H' BNE UGY 2016 Subcontracting Plan Contractor: Ames Laboratory atlowa State Univers'ity (in eSRS a fowa State Equities Corporation) Address: 224 TASF, Ames IA 50011-3020 Solicitation or Contract Number: DE

  11. 11. CONTRACT ID CODE PAGE OF PAGES I AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    11. CONTRACT ID CODE PAGE OF PAGES I AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1 I 2. AMENDMENTIMODIFICATION NO. 258 6. ISSUED BY CODE 3. EFFECTIVE DATE See Block 16C 05008 4. REQUISITION/PURCHASE REQ. NO. 7. ADMINISTERED BY (If other than Item 6) 15. PROJECT NO. (If applicable) CODE 1 0 5 0 0 8 NNSA/Oakridge Site Office NNSA/Oakridge Site Office U.S. Department of Energy U. S. Department of Energy NNSA/Y-12 Site Office NNSA/Y-12 Site Office P.O. Box 2050 P.O. Box 2050 Building 9704-2

  12. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 11. CONTRACT ID CODE

    National Nuclear Security Administration (NNSA)

    1 PAGE 1 OF 23 PAGES 2. AMENDMENT/MODIFICATION NO. 13. EFFECTIVE DATE M188 See Block 16C 4. REQUISITION/PURCHASE I5. PROJECT NO. (If applicable) REQ. NO. 6. ISSUED BY CODE U.S. Department of Energy National Nuclear Security Administration Service Center Property and M&O Contract Support Department P.O. Box 5400 Albuquerque, NM 87185*5400 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy National Nuclear Security Administration Manager, Pantex Site Office P.O. Box 30030

  13. Block 14 entitled, Description of Amendment/Modification is continued as follows:

    National Nuclear Security Administration (NNSA)

    CONTRACT ID CODE PAGE OF PAGES 1 6 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable) 001 1/26/2015 6. ISSUED BY CODE MOSD 7. ADMINISTERED BY (If other than Item 6) Code U.S. DEPARTMENT OF ENERGY NATIONAL NUCLEAR SECURITY ADMINISTRATION M&O CONTRACTING (NA-APM-131) PO BOX 5400, ALBUQUERQUE, NM 87185-5400 8. NAME AND ADDRESS OF CONTRACTOR (No. street, county, State and ZIP Code) (X) 9.A. AMENDMENT OF SOLICITATION NO. DE-SOL-0007749

  14. AMENDMENT OF SOLICITATION/'MODIFICATION OF CONTRACT 1.CNRC DCODE PAGE OF PAGES

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    'MODIFICATION OF CONTRACT 1.CNRC DCODE PAGE OF PAGES T 0 11 8 2. AMENDM ENT/MOD IF ICATION NO. 3. EFFECTIVE DATE 4. REOUISITION/PURCHASE REQ. NO. S. PROJECT NO. (If applicable) 113 See Block 16C 11EM002912 6. ISSUED BY CODE 00603 7. ADMINISTERED BY (If other than Item 6) CODE 100603 Office of River Protection Office of River Protection U.S. Department of Energy U.S. Department of Energy Office of River Prote Ct On Office of River Protection P.C. Box 450 P.O. Box 450 Richland WA 99352 MS3: H6-60

  15. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. 3OTATI OE AE O AE

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    3OTATI OE AE O AE 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE (A't'VY) 4. REOUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable) 199 See Block 16C N/A 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy Office of River Protection P. 0. Box 450, MS 1-6-60 Rich land, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP code) 9A. AMENDMENT OF SOLICITATION NO. Bechtel National, Inc. D 98. DATED (SEE ITEM 11) 2435 Stevens

  16. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1.CONTRACT ID CODE PAGE OF PAGES

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    CONTRACT ID CODE PAGE OF PAGES T 1 1 13 2 AMENDIMENT/MODIFICATION NO 3. EFFECTIVE DATE 4 -REGUISITION/PURCHASE RED. NO 5. PROJECT NO. (If epplicable) 032 04/14/2011 11EM002244 6 ISSUED BY CODE 00603 7 ADMINISTERED BY (Iftherthan temrt6) CODE J00603 Office of River Protection Office of River Protection U.S. Department of Energy U.S. Department of Energy Office of River Protection office of River Protection P.O. Box 450 P.O. Box 450 Richland WA 99352 Richland WA 99352 8 NAME AND ADDRESS OF

  17. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT I I CONTRACT 10 COCE

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SPECrrrED 10THER AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT I I CONTRACT 10 COCE I PAGE OF PAGES 1 1 2 2 AMENDMENTIMODIFICATION NO J EFFECTIVE DATE ~ REOUISITIONiPURCHASE REO NO 15 PROJECT NO (/I BDP"ca04J) 0 83 See Bleck 16C 6 ISSUED BY CODE 00519 7 ADMINISTERED BY (/I ot"'" than Item 61 CODE 100519 Oak Ridge Oa~ Ridge U.S. Department of Energy U.S. Department of Energy ?O. Box 2001 P.O. Box 2001 Oak Ridge TN 37931 Oak Ridge TN 37931 e NAME AND AODRESS OF CONTRACTOR (No

  18. Towering Cumulus Stage Mature Stage Dissipating Stage

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coupled Earth System Model (Technical Report) | SciTech Connect Towards the Prediction of Decadal to Centennial Climate Processes in the Coupled Earth System Model Citation Details In-Document Search Title: Towards the Prediction of Decadal to Centennial Climate Processes in the Coupled Earth System Model In this proposal, we have made major advances in the understanding of decadal and long term climate variability. (a) We performed a systematic study of multidecadal climate variability in

  19. CXAllenRadioTower2.pdf

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    engineered organisms, synthetic biology. governmentally designated noxious weeds, or invasive species, unless the proposed activity would be contained or confined in a manner...

  20. Distillation: Still towering over other options

    SciTech Connect (OSTI)

    Kunesh, J.G.; Kister, H.Z.; Lockett, M.J.; Fair, J.R.

    1995-10-01

    Distillation dominates separations in the chemical process industries (CPI), at least for mixtures that normally are processed as liquids. The authors fully expect that distillation will continue to be the method of choice for many separations, and the method against which other options must be compared. So, in this article, they will put into some perspective just why distillation continues to reign as the king of separations, and what steps are being taken to improve its applicability and performance, as well as basic understanding of the technique.

  1. Side Stream Filtration for Cooling Towers

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

    ... nutrients to aid its growth and surfaces on which to live. ... chamber Purge components only - periodic inspection ... backwash, once a day or on pressure drop as needed. ...

  2. CSP Tower Air Brayton Combustor (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-09-01

    Southwest Research Institute is one of the 2012 SunShot CSP R&D awardees for their advanced power cycles. This fact sheet explains the motivation, description, and impact of the project.

  3. Radio Towers Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    90C363.15 K 194 F 653.67 R 1 USGS Estimated Reservoir Volume: 1 km 1 USGS Mean Capacity: 4 MW 1 Click "Edit With Form" above to add content History and...

  4. Advanced Tower Analysis and Design System

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    enhanced metafile, and both 2D and 3D International Graphics Standard for import into CAD systems. Help is available through the Windows help system as well as through a...

  5. Project Profile: CSP Tower Air Brayton Combustor

    Broader source: Energy.gov [DOE]

    The Southwest Research Institute (SWRI) and its partners, under the 2012 Concentrating Solar Power (CSP) SunShot R&D funding opportunity announcement (FOA), are developing an external combustor capable of operating at much higher temperatures than the current state-of-the-art technology.

  6. Synthesis of visible light-activated TiO{sub 2} photocatalyst via surface organic modification

    SciTech Connect (OSTI)

    Jiang Dong Xu Yao Hou Bo; Wu Dong; Sun Yuhan

    2007-05-15

    A visible light-activated TiO{sub 2} photocatalyst was successfully synthesized by the surface organic modification to sol-gel-hydrothermal synthesized TiO{sub 2}. The surface hydroxyls of TiO{sub 2} nanoparticles reacted with the active -NCO groups of tolylene diisocyanate (TDI) to form a surface complex that was confirmed by the FT-IR and XPS spectra. Due to the existence of surface complex, the absorption edge of as-prepared TDI-modified TiO{sub 2} nanomaterial extended well into visible region. Compared with unmodified TiO{sub 2} and Degussa P25, the TDI-modified TiO{sub 2} photocatalysts showed higher activity for the photocatalytic degradation of methylene blue under visible light irradiation. - Graphical abstract: A visible light-activated TiO{sub 2} photocatalyst was successfully synthesized by the surface organic modification to TiO{sub 2}. The surface hydroxyls of TiO{sub 2} nanoparticles reacted with the active -NCO groups of tolylene diisocyanate (TDI) to form a surface complex. The TDI-modified TiO{sub 2} photocatalysts showed higher activity for the photocatalytic degradation of methylene blue under visible light irradiation.

  7. Recognition of a Mononucleosomal Histone Modification Pattern by BPTF via Multivalent Interactions

    SciTech Connect (OSTI)

    A Ruthenburg; H Li; T Milne; S Dewell; R McGinty; M Yuen; B Ueberheide; Y Dou; T Muir; et al.

    2011-12-31

    Little is known about how combinations of histone marks are interpreted at the level of nucleosomes. The second PHD finger of human BPTF is known to specifically recognize histone H3 when methylated on lysine 4 (H3K4me2/3). Here, we examine how additional heterotypic modifications influence BPTF binding. Using peptide surrogates, three acetyllysine ligands are indentified for a PHD-adjacent bromodomain in BPTF via systematic screening and biophysical characterization. Although the bromodomain displays limited discrimination among the three possible acetyllysines at the peptide level, marked selectivity is observed for only one of these sites, H4K16ac, in combination with H3K4me3 at the mononucleosome level. In support, these two histone marks constitute a unique trans-histone modification pattern that unambiguously resides within a single nucleosomal unit in human cells, and this module colocalizes with these marks in the genome. Together, our data call attention to nucleosomal patterning of covalent marks in dictating critical chromatin associations.

  8. Recognition of a Mononucleosomal Histone Modification Pattern by BPTF via Multivalent Interactions

    SciTech Connect (OSTI)

    Ruthenburg, Alexander J.; Li, Haitao; Milne, Thomas A.; Dewell, Scott; McGinty, Robert K.; Yuen, Melanie; Ueberheide, Beatrix; Dou, Yali; Muir, Tom W.; Patel, Dinshaw J.; Allis, C. David

    2011-09-20

    Little is known about how combinations of histone marks are interpreted at the level of nucleosomes. The second PHD finger of human BPTF is known to specifically recognize histone H3 when methylated on lysine 4 (H3K4me2/3). Here, we examine how additional heterotypic modifications influence BPTF binding. Using peptide surrogates, three acetyllysine ligands are indentified for a PHD-adjacent bromodomain in BPTF via systematic screening and biophysical characterization. Although the bromodomain displays limited discrimination among the three possible acetyllysines at the peptide level, marked selectivity is observed for only one of these sites, H4K16ac, in combination with H3K4me3 at the mononucleosome level. In support, these two histone marks constitute a unique trans-histone modification pattern that unambiguously resides within a single nucleosomal unit in human cells, and this module colocalizes with these marks in the genome. Together, our data call attention to nucleosomal patterning of covalent marks in dictating critical chromatin associations.

  9. Modifications to WRFs dynamical core to improve the treatment of moisture for large-eddy simulations

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Xiao, Heng; Endo, Satoshi; Wong, May; Skamarock, William C.; Klemp, Joseph B.; Fast, Jerome D.; Gustafson, Jr., William I.; Vogelmann, Andrew; Wang, Hailong; Liu, Yangang; et al

    2015-10-29

    Yamaguchi and Feingold (2012) note that the cloud fields in their large-eddy simulations (LESs) of marine stratocumulus using the Weather Research and Forecasting (WRF) model exhibit a strong sensitivity to time stepping choices. In this study, we reproduce and analyze this sensitivity issue using two stratocumulus cases, one marine and one continental. Results show that (1) the sensitivity is associated with spurious motions near the moisture jump between the boundary layer and the free atmosphere, and (2) these spurious motions appear to arise from neglecting small variations in water vapor mixing ratio (qv) in the pressure gradient calculation in themore » acoustic sub-stepping portion of the integration procedure. We show that this issue is remedied in the WRF dynamical core by replacing the prognostic equation for the potential temperature θ with one for the moist potential temperature θm=θ(1+1.61qv), which allows consistent treatment of moisture in the calculation of pressure during the acoustic sub-steps. With this modification, the spurious motions and the sensitivity to the time stepping settings (i.e., the dynamic time step length and number of acoustic sub-steps) are eliminated in both of the example stratocumulus cases. In conclusion, this modification improves the applicability of WRF for LES applications, and possibly other models using similar dynamical core formulations, and also permits the use of longer time steps than in the original code.« less

  10. Leadership Institutional Change Principle

    Broader source: Energy.gov [DOE]

    For changing behavior among employees, leaders in Federal agencies should visibly communicate their own commitments to sustainability in the workplace. Such visible leadership will help achieve sustainability goals in the short term and continue to provide motivation for long-term benefits.

  11. Phase change compositions

    DOE Patents [OSTI]

    Salyer, Ival O.; Griffen, Charles W.

    1986-01-01

    Compositions containing crystalline, long chain, alkyl hydrocarbons as phase change materials including cementitious compositions containing the alkyl hydrocarbons neat or in pellets or granules formed by incorporating the alkyl hydrocarbons in polymers or rubbers; and polymeric or elastomeric compositions containing alkyl hydrocarbons.

  12. Phase change compositions

    DOE Patents [OSTI]

    Salyer, Ival O.

    1989-01-01

    Compositions containing crystalline, straight chain, alkyl hydrocarbons as phase change materials including cementitious compositions containing the alkyl hydrocarbons neat or in pellets or granules formed by incorporating the alkyl hydrocarbons in polymers or rubbers; and polymeric or elastomeric compositions containing alkyl hydrocarbons.

  13. c-Myc alters substrate utilization and O-GlcNAc protein posttranslational modifications without altering cardiac function during early aortic constriction

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Ledee, Dolena; Smith, Lincoln; Bruce, Margaret; Kajimoto, Masaki; Isern, Nancy; Portman, Michael A.; Olson, Aaron K.; Bertrand, Luc

    2015-08-12

    Hypertrophic stimuli cause transcription of the proto-oncogene c-Myc (Myc). Prior work showed that myocardial knockout of c-Myc (Myc) attenuated hypertrophy and decreased expression of metabolic genes after aortic constriction. Accordingly, we assessed the interplay between Myc, substrate oxidation and cardiac function during early pressure overload hypertrophy. Mice with cardiac specific, inducible Myc knockout (MycKO-TAC) and non-transgenic littermates (Cont-TAC) were subjected to transverse aortic constriction (TAC; n = 7/group). Additional groups underwent sham surgery (Cont-Sham and MycKO-Sham, n = 5 per group). After two weeks, function was measured in isolated working hearts along with substrate fractional contributions to the citric acidmorecycle by using perfusate with C labeled mixed fatty acids, lactate, ketone bodies and unlabeled glucose and insulin. Cardiac function was similar between groups after TAC although +dP/dT and -dP/dT trended towards improvement in MycKO-TAC versus Cont-TAC. In sham hearts, Myc knockout did not affect cardiac function or substrate preferences for the citric acid cycle. However, Myc knockout altered fractional contributions during TAC. The unlabeled fractional contribution increased in MycKO-TAC versus Cont-TAC, whereas ketone and free fatty acid fractional contributions decreased. Additionally, protein posttranslational modifications by O-GlcNAc were significantly greater in Cont-TAC versus both Cont-Sham and MycKO-TAC. In conclusion, Myc alters substrate preferences for the citric acid cycle during early pressure overload hypertrophy without negatively affecting cardiac function. Myc also affects protein post-translational modifications by O-GlcNAc during hypertrophy, which may regulate Mycinduced metabolic changes.less

  14. c-Myc alters substrate utilization and O-GlcNAc protein posttranslational modifications without altering cardiac function during early aortic constriction

    SciTech Connect (OSTI)

    Ledee, Dolena; Smith, Lincoln; Bruce, Margaret; Kajimoto, Masaki; Isern, Nancy; Portman, Michael A.; Olson, Aaron K.; Bertrand, Luc

    2015-08-12

    Hypertrophic stimuli cause transcription of the proto-oncogene c-Myc (Myc). Prior work showed that myocardial knockout of c-Myc (Myc) attenuated hypertrophy and decreased expression of metabolic genes after aortic constriction. Accordingly, we assessed the interplay between Myc, substrate oxidation and cardiac function during early pressure overload hypertrophy. Mice with cardiac specific, inducible Myc knockout (MycKO-TAC) and non-transgenic littermates (Cont-TAC) were subjected to transverse aortic constriction (TAC; n = 7/group). Additional groups underwent sham surgery (Cont-Sham and MycKO-Sham, n = 5 per group). After two weeks, function was measured in isolated working hearts along with substrate fractional contributions to the citric acid cycle by using perfusate with C labeled mixed fatty acids, lactate, ketone bodies and unlabeled glucose and insulin. Cardiac function was similar between groups after TAC although +dP/dT and -dP/dT trended towards improvement in MycKO-TAC versus Cont-TAC. In sham hearts, Myc knockout did not affect cardiac function or substrate preferences for the citric acid cycle. However, Myc knockout altered fractional contributions during TAC. The unlabeled fractional contribution increased in MycKO-TAC versus Cont-TAC, whereas ketone and free fatty acid fractional contributions decreased. Additionally, protein posttranslational modifications by O-GlcNAc were significantly greater in Cont-TAC versus both Cont-Sham and MycKO-TAC. In conclusion, Myc alters substrate preferences for the citric acid cycle during early pressure overload hypertrophy without negatively affecting cardiac function. Myc also affects protein post-translational modifications by O-GlcNAc during hypertrophy, which may regulate Mycinduced metabolic changes.

  15. Farming: A Climate Change Culprit

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Farming: A Climate Change Culprit Farming: A Climate Change Culprit Simulations run at NERSC show impact of land-use change on African monsoon precipitation June 7, 2014 SahelMap ...

  16. chang-98.pdf

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    7 Relationship Between TOA Albedo and Cloud Optical Depth as Deduced from Models and Collocated AVHRR and ERBE Satellite Observations F.-L. Chang and Z. Li Canada Centre for Remote Sensing Ottawa, Ontario, Canada S. A. Ackerman Department of Atmospheric and Oceanic Sciences University of Wisconsin-Madison Introduction It has long been recognized that clouds have a large influence on the earth's radiation budget and climate. Current cloud and radiation research programs, such as the Clouds and

  17. ChangePoint

    Energy Science and Technology Software Center (OSTI)

    2006-10-18

    This software allows one to locate the sudden intensity changes in fluorescence time trajectoreis photon by photon. It also automatically calculate the most probable number of intensity levels in the trajectory according to Bayesian statistics measure. This allows an accurate and unbiased analysis and interpretation of experimental data. The code can be applied to analysis of DNA sequencing data, for example, to allow rapid single-molecule and single-base resolution.

  18. THE RELATIVISTIC HEAVY ION COLLIDER (RHIC) CRYOGENIC SYSTEM AT BNL: REVIEW OF THE MODIFICATIONS AND UPGRADES SINCE 2002 AND PLANNED IMPROVEMENTS.

    SciTech Connect (OSTI)

    THAN,Y.R.; TUOZZOLO, J.; SIDI-YAKHLEF, A.; GANNI, V.; KNUDSEN, P.; ARENIUS, D.

    2007-07-16

    Brookhaven National Laboratory continues its multi-year program to improve the operational efficiency, reliability, and stability of the cryogenic system which also resulted in improved beam availability of the Relativistic Heavy Ion Collider (RHIC). This paper summarizes the work and changes made after each phase over the past four years to the present, as well as proposed future improvements. Power usage dropped from an initial 9.4 MW to the present 5.1 MW and is expected to drop below 5 MW after the completion of the remaining proposed improvements. The work proceeded in phases by balancing the Collider's schedule of operation, time required for the modifications and budget constraints. The main changes include process control, compressor oil removal and management, elimination of the use of cold compressors and two liquid helium storage tanks, insulation of the third liquid helium storage tank, compressor bypass flow reduction and the addition of a load turbine (Joule-Thompson expander) with associated heat exchangers at the cold end of the plant. Also, liquid helium pumps used for forced circulation of the sub-cooled helium through the magnet loops were eliminated by an accelerator supply flow reconfiguration. Planned future upgrades include the resizing of expanders 5 and 6 to increase their efficiencies.

  19. Structural modifications due to interface chemistry at metal-nitride interfaces

    SciTech Connect (OSTI)

    Yadav, S. K.; Shao, S.; Wang, J.; Liu, X. -Y.

    2015-11-27

    Based on accurate first principles density functional theory (DFT) calculations, an unusual phenomenon of interfacial structural modifications, due to the interface chemistry influence is identified at two metal-nitride interfaces with strong metal-nitrogen affinity, Al/TiN {111} and Al/VN {111} interfaces. It is shown that at such interfaces, a faulted stacking structure is energetically preferred on the Al side of the interface. And both intrinsic and extrinsic stacking fault energies in the vicinity Al layers are negligibly small. However, such phenomenon does not occur in Pt/TiN and Pt/VN interfaces because of the weak Pt-N affinity. As a result, corresponding to structural energies of metal-nitride interfaces, the linear elasticity analysis predicts characteristics of interfacial misfit dislocations at metal-nitride interfaces.

  20. Modification of plasma flows with gas puff in the scrape-off layer of ADITYA tokamak

    SciTech Connect (OSTI)

    Sangwan, Deepak; Jha, Ratneshwar; Brotankova, Jana; Gopalkrishna, M. V. [Institute for Plasma Research, Gandhinagar 382428 (India)] [Institute for Plasma Research, Gandhinagar 382428 (India)

    2013-06-15

    The parallel Mach numbers are measured at three locations in the scrape-off layer (SOL) plasma of ADITYA tokamak by using Mach probes. The flow pattern is constructed from these measurements and the modification of flow pattern is observed by introducing a small puff of working gas. In the normal discharge, there is an indication of shell structure in the SOL plasma flows, which is removed during the gas puff. The plasma parameters, particle flux and Reynolds stress are also measured in the normal discharge and in the discharge with gas puff. It is observed that Reynolds stress and Mach number are coupled in the near SOL region and decoupled in the far SOL region. The coupling in the near SOL region gets washed away during the gas puff.

  1. Phosphonic Acid Functionalized Asymmetric Phthalocyanines: Synthesis, Modification of Indium Tin Oxide (ITO), and Charge Transfer

    SciTech Connect (OSTI)

    Polaske, Nathan W.; Lin, Hsiao-Chu; Tang, Anna; Mayukh, Mayank; Oquendo, Luis E.; Green, John; Ratcliff, Erin L.; Armstrong, Neal R.; Saavedra, S. Scott; McGrath, Dominic V.

    2011-12-20

    Metalated and free-base A?B-type asymmetric phthalocyanines (Pcs) bearing, in the asymmetric quadrant, a flexible alkyl linker of varying chain lengths terminating in a phosphonic acid (PA) group have been synthesized. Two parallel series of asymmetric Pc derivatives bearing aryloxy and arylthio substituents are reported, and their synthesis and characterization through NMR, combustion analysis, and MALDI-MS are described. We also demonstrate the modification of indium tin oxide (ITO) substrates using the PA functionalized asymmetric Pc derivatives and monitoring their electrochemistry. The PA functionalized asymmetric Pcs were anchored to the ITO surface through chemisorption and their electrochemical properties characterized using cyclic voltammetry to investigate the effects of PA structure on the thermodynamics and kinetics of charge transfer. Ionization energies of the modified ITO surfaces were measured using ultraviolet photoemission spectroscopy.

  2. Precision shape modification of nanodevices with a low-energy electron beam

    DOE Patents [OSTI]

    Zettl, Alex; Yuzvinsky, Thomas David; Fennimore, Adam

    2010-03-09

    Methods of shape modifying a nanodevice by contacting it with a low-energy focused electron beam are disclosed here. In one embodiment, a nanodevice may be permanently reformed to a different geometry through an application of a deforming force and a low-energy focused electron beam. With the addition of an assist gas, material may be removed from the nanodevice through application of the low-energy focused electron beam. The independent methods of shape modification and material removal may be used either individually or simultaneously. Precision cuts with accuracies as high as 10 nm may be achieved through the use of precision low-energy Scanning Electron Microscope scan beams. These methods may be used in an automated system to produce nanodevices of very precise dimensions. These methods may be used to produce nanodevices of carbon-based, silicon-based, or other compositions by varying the assist gas.

  3. Structural modifications due to interface chemistry at metal-nitride interfaces

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Yadav, S. K.; Shao, S.; Wang, J.; Liu, X. -Y.

    2015-11-27

    Based on accurate first principles density functional theory (DFT) calculations, an unusual phenomenon of interfacial structural modifications, due to the interface chemistry influence is identified at two metal-nitride interfaces with strong metal-nitrogen affinity, Al/TiN {111} and Al/VN {111} interfaces. It is shown that at such interfaces, a faulted stacking structure is energetically preferred on the Al side of the interface. And both intrinsic and extrinsic stacking fault energies in the vicinity Al layers are negligibly small. However, such phenomenon does not occur in Pt/TiN and Pt/VN interfaces because of the weak Pt-N affinity. As a result, corresponding to structural energiesmore » of metal-nitride interfaces, the linear elasticity analysis predicts characteristics of interfacial misfit dislocations at metal-nitride interfaces.« less

  4. Large voltage-induced modification of spin-orbit torques in Pt/Co/GdOx

    SciTech Connect (OSTI)

    Emori, Satoru Bauer, Uwe; Woo, Seonghoon; Beach, Geoffrey S. D.

    2014-12-01

    We report on large modifications of current-induced spin-orbit torques in a gated Pt/Co/Gd-oxide microstrip due to voltage-driven O{sup 2−} migration. The Slonczewski-like and field-like torques are quantified using a low-frequency harmonic technique based on the polar magneto-optical Kerr effect. Voltage-induced oxidation of Co enhances the Slonczewski-like torque by as much as an order of magnitude and simultaneously reduces the anisotropy energy barrier by a factor of ∼5. Such magneto-ionic tuning of interfacial spin-orbit effects may significantly enhance the efficiency of magnetization switching and provide additional degrees of freedom in spintronic devices.

  5. Environmental assessment for operations, upgrades, and modifications in SNL/NM Technical Area IV

    SciTech Connect (OSTI)

    1996-04-01

    The proposed action for this EA for Sandia National Laboratories/New Mexico Technical Area IV, includes continuing existing operations, modification of an existing accelerator (Particle Beam Fusion Accelerator II) to support defnese-related Z-pinch experiments, and construction of two transformer oil storage tanks to support the expansion of the Advanced Pulsed Power Research Module, a single pulse accelerator. Based on the analyses in the EA, DOE believes that the proposed action is not a major federal action significantly affecting the quality of the human environment within the meaning of NEPA and CEQ NEPA implementing regulations in 40 CFR 1508.18 and 1508.27. Therefore, an environmental impact statement is not required, and a Finding of No Significant Impact is issued.

  6. A Halotyrosine Antibody that Detects Increased Protein Modifications in Asthma Patients

    SciTech Connect (OSTI)

    Jin, Hongjun; Hallstrand, Teal S.; Daly, Don S.; Matzke, Melissa M.; Nair, Parameswaran; Bigelow, Diana J.; Pounds, Joel G.; Zangar, Richard C.

    2014-01-31

    Background-Airway inflammation plays an important pathophysiological role in asthma. Eosinophils produce hypobromite and bromotyrosine while neutrophils produce hypochlorite and chlorotyrosine. Objective-To evaluate halotyrosine modifications of individual airway proteins as a marker of inflammation in asthma using an antibody-based assay. Methods-We developed a novel monoclonal antibody (BTK-94C) that binds halogenated tyrosine residues, and used this antibody in a custom enzyme-linked immunosorbent assay (ELISA) microarray platform to examine halotyrosine levels in 23 proteins in three independent sets of sputum samples (52 samples total). Results-In 15 subjects with either no asthma, or with asthma characterized by high or low sputum eosinophil counts, we found associations between increased halotyrosine levels of at least three proteins and severity of airway hyperresponsiveness (AHR). Treatment with mepolizumab in 17 patients with sputum eosinophilia markedly reduced the sputum eosinophilia and significantly reduced halotyrosine levels in one sputum protein. Further analysis of 10 subjects with neutrophilic asthma and 10 health controls demonstrated a broad increase in halotyrosine in the patients with airway neutrophilia. Conclusions-Significantly higher levels of halotyrosine are associated with asthma in the asthma phenotypes we examined. The halotyrosine levels correlated with indirect AHR in the form of exercise-induced bronchoconstriction. Clinical Implication-An antibody-based assay for tyrosine halogenation in specific proteins may prove useful for assessing airway inflammation in asthma. Capsule Summary-An antibody to measure protein monobrominated tyrosine and other halotyrosine modifications was developed and used to evaluate halogenation in specific proteins in the airways for the first time. Associations were found between levels of halotyrosine and exercise-induced bronchoconstriction, and eosinophil and neutrophil inflammation in sputum from asthma patients. The ELISA developed here can be easily translated into a clinical test.

  7. Institutional Change Process for Sustainability

    Broader source: Energy.gov [DOE]

    For establishing institutional change in a federal agency to achieve sustainability or other energy efficiency goals, follow the five-step institutional change process.

  8. ARM - Predictions of Climate Change

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    TeachersTopic ListPredictions of Climate Change Outreach Home Room News Publications ... Teachers' Toolbox Lesson Plans Predictions of Climate Change There are no accurate ...

  9. ARM - Climate Change Through History

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Teachers Teachers' Toolbox Lesson Plans Climate Change Through History Scientists know ... Evidence of Climate Change It is important to remember that even minor fluctuations can ...

  10. Strategies for Achieving Institutional Change

    Broader source: Energy.gov [DOE]

    Many strategies—including those derived from Institutional Change Principles–may be used to effect institutional change in support of energy and sustainability objectives.

  11. 1. CONTRACT ID CODE PAGE of: PAGES AMENDM ENT OF SOLICITATION/MODIFICATION OF CONTRACT I -1 5

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of: PAGES AMENDM ENT OF SOLICITATION/MODIFICATION OF CONTRACT I -1 5 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE (0/1T 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable) 286 See Block 16C 12EM0014771 6. ISSUED BY CODE 7. AD)MINISTERED BY (If otherrtianItm 6) CODE U.S. Department of Energy Office of River Protection P. 0. Box 450, MIS 116-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No., street. county.. State and ZIP code) 9A. AMENDMENT OF SOLICITATION NO. Bechtel

  12. Contract No. DE-AC02-07CH11358 Section J Appendix G Contract Modification No. 0183

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Section J Appendix G Contract Modification No. 0183 ATTACHMENT J.7 Contract No. DE-AC02-07CH11358 J-G-1 APPENDIX G PURCHASING SYSTEM REQUIREMENTS Applicable to the Operation of AMES Laboratory Contract No. DE-AC02-07CH11358 Section J Appendix G Contract Modification No. 0183 Appendix G Purchasing System Requirements This Appendix and Clause 1.154, "Contractor Purchasing System," sets forth DOE requirements applicable to the Purchasing System established under the Contract for the

  13. Enzymatic temperature change indicator

    DOE Patents [OSTI]

    Klibanov, Alexander M.; Dordick, Jonathan S.

    1989-01-21

    A temperature change indicator is described which is composed of an enzyme and a substrate for that enzyme suspended in a solid organic solvent or mixture of solvents as a support medium. The organic solvent or solvents are chosen so as to melt at a specific temperature or in a specific temperature range. When the temperature of the indicator is elevated above the chosen, or critical temperature, the solid organic solvent support will melt, and the enzymatic reaction will occur, producing a visually detectable product which is stable to further temperature variation.

  14. Progress through change

    SciTech Connect (OSTI)

    2006-11-15

    Merger, acquisitions and name changes - it happens in Germany as well. RAG has been undertaking some streamlining that has already impacted mining equipment and materials supply. It acquired the utilities firm E.ON's holding in Degussa on 1 July 2006. It is uncertain whether RAG may opt to sell DBT, one of the world's leading suppliers of underground mining equipment. DBT itself is undergoing some streamlining having sold DBT Maschinenfabrik Scharf and its subsidiaries to the Aurelius Group. The MAN TAKRAF Group has been sold to TAKRAAF Holding GmbH. These and other recent developments amongst Germany's mining equipment manufacturers suppliers are reported. 2 photos.

  15. Understanding Climate Change

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Climate Change Sandia Researchers Travel to the North Slope of Alaska Exceptional Service in the National Interest Alaska C a n a d a U n i t e d S t a t e s Russia North Slope Barrow Oliktok Atqasuk Arctic Ocean Sandia researchers are members of a global research team whose work on the cold tundra in northern Alaska is helping to transform sci- entists' understanding of what the future may hold for Earth's climate. A Centerpiece of DOE Climate Research Sponsored by DOE's Office of Science and

  16. Mission Support Contract Attachment J.10 Contract No. DE-AC06-09RL14728 Modification 502

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Attachment J.10 Contract No. DE-AC06-09RL14728 Modification 502 Table of Contents J.10-1 SERVICE CONTRACT ACT: WAGE DETERMINATION ...................................................................... 2 J.10-2 DAVIS BACON ACT: GENERAL DECISION ..................................................................................... 22 J.10-3 COLLECTIVE BARGAINING ACT: WAGE DETERMINATION ........................................................... 33 Mission Support Contract Attachment J.10 Contract

  17. Resin-assisted enrichment of thiols as a general strategy for proteomic profiling of cysteine-based reversible modifications

    SciTech Connect (OSTI)

    Guo, Jia; Gaffrey, Matthew J.; Su, Dian; Liu, Tao; Camp, David G.; Smith, Richard D.; Qian, Weijun

    2013-12-12

    Reversible modifications on cysteine thiols play a significant role in redox signaling and regulation. A number of reversible redox modifications, including disulfide formation, S-nitrosylation, and S-glutathionylation, have been recognized for their significance in various physiological and pathological processes. Here we describe in detail a resin-assisted thiol-affinity enrichment protocol for both biochemical and proteomics applications. This protocol serves as a general approach for specific isolation of thiol-containing proteins or peptides derived from reversible redox-modified proteins. This approach utilizes thiol-affinity resins to directly capture thiol-containing proteins or peptides through a disulfide exchange reaction followed by on-resin protein digestion and on-resin multiplexed isobaric labeling to facilitate LC-MS/MS based quantitative site-specific analysis of redox modifications. The overall approach requires a much simpler workflow with increased specificity compared to the commonly used biotin switch technique. By coupling different selective reduction strategies, the resin-assisted approach provides the researcher with a useful tool capable of enriching different types of reversible modifications on protein thiols. Procedures for selective enrichment and analyses of S-nitrosylation and total reversible cysteine oxidation are presented to demonstrate the utility of this general strategy.

  18. DoD Climate Change Fuel Cell Program

    SciTech Connect (OSTI)

    Steven A. Gabrielle

    2007-04-30

    A grant was awarded to PPL EnergyPlus, LLC for two (2) 250kW Molten Carbonate Fuel Cells at Pepperidge Farm, Inc. on 9/30/03. Pepperidge Farm subsequently signed a contract for one 250kW fuel cell. A request was made and granted to apply the award for the second fuel cell to the Sheraton New York Hotel & Towers (see attached email). This report discusses the first year of operation of a fuel cell power plant located at Pepperidge Farm, Inc., Bloomfield, Connecticut and a fuel cell power plant located at Sheraton New York Hotel & Towers, New York, New York. PPL EnergyPlus, LLC installed the plants under a contract with Pepperidge Farm and Starwood Hotels & Resorts Worldwide, Inc. Two DFC 300 fuel cells, manufactured by FuelCell Energy, Inc. of Danbury, CT were selected for the project. The fuel cell located at Pepperidge Farm successfully operated from January 16, 2006 to January 15, 2007. The fuel cell located at Sheraton New York Hotel & Tower successfully operated from May 19, 2005 to May 18, 2006.This report discusses the performance of these plants during these periods.

  19. Advanced Natural Gas Reciprocating Engine: Parasitic Loss Control through Surface Modification

    SciTech Connect (OSTI)

    Farshid Sadeghi; Chin-Pei Wang

    2008-12-31

    This report presents results of our investigation on parasitic loss control through surface modification in reciprocating engine. In order to achieve the objectives several experimental and corresponding analytical models were designed and developed to corroborate our results. Four different test rigs were designed and developed to simulate the contact between the piston ring and cylinder liner (PRCL) contact. The Reciprocating Piston Test Rig (RPTR) is a novel suspended liner test apparatus which can be used to accurately measure the friction force and side load at the piston-cylinder interface. A mixed lubrication model for the complete ring-pack and piston skirt was developed to correlate with the experimental measurements. Comparisons between the experimental and analytical results showed good agreement. The results revealed that in the reciprocating engines higher friction occur near TDC and BDC of the stroke due to the extremely low piston speed resulting in boundary lubrication. A Small Engine Dynamometer Test Rig was also designed and developed to enable testing of cylinder liner under motored and fired conditions. Results of this study provide a baseline from which to measure the effect of surface modifications. The Pin on Disk Test Rig (POD) was used in a flat-on-flat configuration to study the friction effect of CNC machining circular pockets and laser micro-dimples. The results show that large and shallow circular pockets resulted in significant friction reduction. Deep circular pockets did not provide much load support. The Reciprocating Liner Test Rig (RLTR) was designed to simplifying the contact at the PRCL interface. Accurate measurement of friction was obtained using 3-axis piezoelectric force transducer. Two fiber optic sensors were used to measure the film thickness precisely. The results show that the friction force is reduced through the use of modified surfaces. The Shear Driven Test Rig (SDTR) was designed to simulate the mechanism of the piston ring pass through the liner. Micro PIV system was provided to observing the flow of lubricant in the cavity (pocket). The Vorticity-Stream Function Code was developed to simulate the incompressible fluid flow in the rectangular cavity.

  20. Efficiency of plasma actuator ionization in shock wave modification in a rarefied supersonic flow over a flat plate

    SciTech Connect (OSTI)

    Joussot, Romain; Lago, Viviana; Parisse, Jean-Denis

    2014-12-09

    This paper describes experimental and numerical investigations focused on the shock wave modification, induced by a dc glow discharge, of a Mach 2 flow under rarefied regime. The model under investigation is a flat plate equipped with a plasma actuator composed of two electrodes. The glow discharge is generated by applying a negative potential to the upstream electrode, enabling the creation of a weakly ionized plasma. The natural flow (i.e. without the plasma) exhibits a thick laminar boundary layer and a shock wave with a hyperbolic shape. Images of the flow obtained with an ICCD camera revealed that the plasma discharge induces an increase in the shock wave angle. Thermal effects (volumetric, and at the surface) and plasma effects (ionization, and thermal non-equilibrium) are the most relevant processes explaining the observed modifications. The effect induced by the heating of the flat plate surface is studied experimentally by replacing the upstream electrode by a heating element, and numerically by modifying the thermal boundary condition of the model surface. The results show that for a similar temperature distribution over the plate surface, modifications induced by the heating element are lower than those produced by the plasma. This difference shows that other effects than purely thermal effects are involved with the plasma actuator. Measurements of the electron density with a Langmuir probe highlight the fact that the ionization degree plays an important role into the modification of the flow. The gas properties, especially the isentropic exponent, are indeed modified by the plasma above the actuator and upstream the flat plate. This leads to a local modification of the flow conditions, inducing an increase in the shock wave angle.