National Library of Energy BETA

Sample records for watt bulb limit

  1. Goodbye, Watts. Hello, LUMENS! | Department of Energy

    Energy Savers [EERE]

    Goodbye, Watts. Hello, LUMENS! Goodbye, Watts. Hello, LUMENS! May 17, 2012 - 2:21pm Addthis John Chu John Chu Communications Specialist with the Office of Energy Efficiency and Renewable Energy For years, I bought light bulbs based on watts, or energy use. Like many light bulb consumers, I looked for a traditional 40, 60, 75, or 100 watt incandescent bulb. Now that stores today carry more and more energy efficient lighting choices, I wanted to replace my old incandescents with new bulbs to save

  2. Which Bulb Is Right for You? (High-Resolution EPS Billboard) | Department

    Energy Savers [EERE]

    of Energy EPS Billboard) Which Bulb Is Right for You? (High-Resolution EPS Billboard) High-resolution EPS of billboard reading, 'Which bulb is right for you? Save energy, save money. Energysaver.gov.' File DoE_Billboard_Which_Bulb.eps More Documents & Publications Which Bulb Is Right for You? (High-Resolution JPG Billboard) Which Bulb Is Right for You? (Low-Resolution JPG Billboard) Goodbye, Watts. Hello, Lumens. (High-Resolution EPS

  3. Which Bulb Is Right for You? (High-Resolution JPG Billboard) | Department

    Energy Savers [EERE]

    of Energy JPG Billboard) Which Bulb Is Right for You? (High-Resolution JPG Billboard) HIgh-resolution JPG of billboard reading, 'Which bulb is right for you? Save energy, save money. Energysaver.gov.' Image icon DoE_Billboard_Which_Bulb.jpg More Documents & Publications Which Bulb Is Right for You? (High-Resolution EPS Billboard) Which Bulb Is Right for You? (Low-Resolution JPG Billboard) Goodbye, Watts. Hello, Lumens. (High-Resolution JPG

  4. A Winning Light Bulb With the Potential to Save the Nation Billions |

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

    Department of Energy A Winning Light Bulb With the Potential to Save the Nation Billions A Winning Light Bulb With the Potential to Save the Nation Billions August 4, 2011 - 3:09pm Addthis This 10-watt alternative LED bulb (which glows white when turned on) could save the nation about 35 terawatt-hours of electricity or $3.9 billion in one year and avoid 20 million metric tons of carbon emissions if every 60-watt incandescent bulb in the U.S. was replaced with the L Prize winner. | Photo

  5. Jacketed lamp bulb envelope

    DOE Patents [OSTI]

    MacLennan, Donald A.; Turner, Brian P.; Gitsevich, Aleksandr; Bass, Gary K.; Dolan, James T.; Kipling, Kent; Kirkpatrick, Douglas A.; Leng, Yongzhang; Levin, Izrail; Roy, Robert J.; Shanks, Bruce; Smith, Malcolm; Trimble, William C.; Tsai, Peter

    2001-01-01

    A jacketed lamp bulb envelope includes a ceramic cup having an open end and a partially closed end, the partially closed end defining an aperture, a lamp bulb positioned inside the ceramic cup abutting the aperture, and a reflective ceramic material at least partially covering a portion of the bulb not abutting the aperture. The reflective ceramic material may substantially fill an interior volume of the ceramic cup not occupied by the bulb. The ceramic cup may include a structural feature for aiding in alignment of the jacketed lamp bulb envelope in a lamp. The ceramic cup may include an external flange about a periphery thereof. One example of a jacketed lamp bulb envelope includes a ceramic cup having an open end and a closed end, a ceramic washer covering the open end of the ceramic cup, the washer defining an aperture therethrough, a lamp bulb positioned inside the ceramic cup abutting the aperture, and a reflective ceramic material filling an interior volume of the ceramic cup not occupied by the bulb. A method of packing a jacketed lamp bulb envelope of the type comprising a ceramic cup with a lamp bulb disposed therein includes the steps of filling the ceramic cup with a flowable slurry of reflective material, and applying centrifugal force to the cup to pack the reflective material therein.

  6. Watts Bar Operating Cycles Simulated...

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

    Coming in our next issue of Tech Notes: Fuel Performance Predictions with VERA Watts Bar Operating Cycles Simulated to Present Among the most important accomplishments during CASL...

  7. Lower Watts Bar Reservoir Clinch River/Poplar Creek | Department of Energy

    Office of Environmental Management (EM)

    Watts Bar Reservoir Clinch River/Poplar Creek Lower Watts Bar Reservoir Clinch River/Poplar Creek This document discusses the Lower Watts Bar Reservoir Clinch River/Poplar Creek. Topics include: * The area's safety * Any use limitations for the area * History and cleanup background for this area * How DOE's cleanup program addressed the problem PDF icon Lower Watts Bar Reservoir Clinch River/Poplar Creek More Documents & Publications EA-1175: Final Environmental Assessment OREM

  8. L Prize(tm): The Race for Super Efficient Light Bulbs | Department of Energy

    Energy Savers [EERE]

    L Prize(tm): The Race for Super Efficient Light Bulbs L Prize(tm): The Race for Super Efficient Light Bulbs This September 23, 2008 webcast provided an overview of the Bright Tomorrow Lighting Prize (L Prize) technology competition. The L Prize calls for super-efficient SSL products to replace two of the most common light bulbs used today: the 60-watt incandescent and the PAR-38 halogen reflector. Kelly Gordon, Pacific Northwest National Laboratory, kicked off the webcast with an overview of the

  9. The Watt Stopper Inc | Open Energy Information

    Open Energy Info (EERE)

    Watt Stopper Inc Jump to: navigation, search Name: The Watt Stopper Inc Place: Santa Clara, Colorado Zip: 95050 Product: Wattstoper produces stand-alone and networked lighting...

  10. PlotWatt | Open Energy Information

    Open Energy Info (EERE)

    Tool Summary LAUNCH TOOL Name: PlotWatt AgencyCompany Organization: PlotWatt Sector: Energy Focus Area: Energy Efficiency Resource Type: Softwaremodeling tools User Interface:...

  11. NoWatt | Open Energy Information

    Open Energy Info (EERE)

    NoWatt Jump to: navigation, search Name: NoWatt Place: Manchester, England, United Kingdom Zip: M20 6UG Product: Manchester, UK-based provider of energy management solutions and...

  12. AlphaWatt Ltd | Open Energy Information

    Open Energy Info (EERE)

    AlphaWatt Ltd Jump to: navigation, search Name: AlphaWatt Ltd Place: London, United Kingdom Zip: EC1V 4PY Sector: Solar Product: Solar project developer, plans to become an...

  13. SpectraWatt | Open Energy Information

    Open Energy Info (EERE)

    SpectraWatt Place: Hillsboro, Oregon Product: Spun off from Intel to manufacture PV cells. References: SpectraWatt1 This article is a stub. You can help OpenEI by expanding...

  14. SuperBulbs Inc | Open Energy Information

    Open Energy Info (EERE)

    SuperBulbs, Inc. Place: Rewood City, California Zip: 94065 Product: California-based LED manufacturer and technology developer. References: SuperBulbs, Inc.1 This article is...

  15. Lamp bulb with integral reflector

    DOE Patents [OSTI]

    Levin, Izrail; Shanks, Bruce; Sumner, Thomas L.

    2001-01-01

    An improved electrodeless discharge lamp bulb includes an integral ceramic reflector as a portion of the bulb envelope. The bulb envelope further includes two pieces, a reflector portion or segment is cast quartz ceramic and a light transmissive portion is a clear fused silica. In one embodiment, the cast quartz ceramic segment includes heat sink fins or stubs providing an increased outside surface area to dissipate internal heat. In another embodiment, the quartz ceramic segment includes an outside surface fused to eliminate gas permeation by polishing.

  16. WattQuiz | Open Energy Information

    Open Energy Info (EERE)

    www.wattquiz.com Country: United States Web Application Link: www.wattquiz.com Cost: Free Northern America Language: English WattQuiz Screenshot References: Genability1 NYC...

  17. Development of a 100-Watt High Temperature Thermoelectric Generator...

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

    a 100-Watt High Temperature Thermoelectric Generator Development of a 100-Watt High Temperature Thermoelectric Generator Test results for low and high temperature thermoelectric ...

  18. Development of a 500 Watt High Temperature Thermoelectric Generator...

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

    a 500 Watt High Temperature Thermoelectric Generator Development of a 500 Watt High Temperature Thermoelectric Generator A low temperature TEG has been built and tested providing ...

  19. Rock the Watt: An Energy Conservation Campaign at Pacific Northwest...

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

    Rock the Watt: An Energy Conservation Campaign at Pacific Northwest National Lab Rock the Watt: An Energy Conservation Campaign at Pacific Northwest National Lab Case study ...

  20. GlobalWatt Inc | Open Energy Information

    Open Energy Info (EERE)

    search Name: GlobalWatt Inc Place: Dover, Delaware Zip: 19801 Product: Shell company, once planned to float on AIM to raise money in order to acquire the business of...

  1. MegaWatt Solar | Open Energy Information

    Open Energy Info (EERE)

    energy company that delivers scalable solar power generation systems to the utility market. References: MegaWatt Solar1 This article is a stub. You can help OpenEI by...

  2. Watt Does It Cost To Use It?

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

    Watt Does It Cost to Use It? Grades: 5-8, 9-12 Topic: Energy Efficiency and Conservation Author: Mark Ziesmer Owner: Alliance to Save Energy This educational material is brought to you by the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy. WATT DOES IT COST TO USE IT? By Mark Ziesmer, Sultana High School Hesperia Unified School District, California Overview: Familiarize students with how electrical usage is counted, electrical pricing, and measure and evaluate

  3. Goodbye, Watts. Hello, Lumens. (High-Resolution EPS Billboard) | Department

    Energy Savers [EERE]

    of Energy EPS Billboard) Goodbye, Watts. Hello, Lumens. (High-Resolution EPS Billboard) High-resolution EPS of billboard reading, 'Goodbye Watts. Hello Lumens. The new way to shop for light. Energysaver.gov File DoE_Billboard_Goodbye_Watts.EPS More Documents & Publications Goodbye, Watts. Hello, Lumens. (High-Resolution JPG

  4. Goodbye, Watts. Hello, Lumens. (High-Resolution JPG Billboard) | Department

    Energy Savers [EERE]

    of Energy JPG Billboard) Goodbye, Watts. Hello, Lumens. (High-Resolution JPG Billboard) High-resolution JPG of billboard reading, 'Goodbye Watts. Hello Lumens. The new way to shop for light. Energysaver.gov Image icon DoE_Billboard_Goodbye_Watts.jpg More Documents & Publications Goodbye, Watts. Hello, Lumens. (High-Resolution EPS

  5. Goodbye, Watts. Hello, Lumens. (Low-Resolution Billboard) | Department of

    Energy Savers [EERE]

    Energy Low-Resolution Billboard) Goodbye, Watts. Hello, Lumens. (Low-Resolution Billboard) Low-resolution JPG of billboard reading, 'Goodbye Watts. Hello Lumens. The new way to shop for light. Energysaver.gov Image icon DoE_Billboard_Goodbye_Watts_web.jpg More Documents & Publications Goodbye, Watts. Hello, Lumens. (High-Resolution JPG Billboard) Goodbye, Watts. Hello, Lumens. (High-Resolution EPS

  6. Changing How You Choose Light Bulbs

    Broader source: Energy.gov [DOE]

    Last month, the Federal Trade Commission announced that light bulbs will have a brand new style of packaging, starting in 2011.

  7. Purchasing Energy-Efficient Light Bulbs | Department of Energy

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

    Products & Technologies » Energy-Efficient Products » Purchasing Energy-Efficient Light Bulbs Purchasing Energy-Efficient Light Bulbs Did you know? CFLs and LEDs last substantially longer than incandescent light bulbs, reducing labor costs of replacing light bulbs. Coal-burning power plants emit mercury into the environment; using ENERGY STAR light bulbs can reduce these emissions. The Federal Energy Management Program (FEMP) provides acquisition guidance for light bulbs, a product

  8. Development of a 100-Watt High Temperature Thermoelectric Generator |

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

    Department of Energy a 100-Watt High Temperature Thermoelectric Generator Development of a 100-Watt High Temperature Thermoelectric Generator Test results for low and high temperature thermoelectric generators (TEG) those for a 530-watt BiTe TEG; design and construction of a 100-watt high temperature TEG currently in fabrication. PDF icon deer08_lagrandeur.pdf More Documents & Publications Status of Segmented Element Thermoelectric Generator for Vehicle Waste Heat Recovery Status of

  9. Development of a 500 Watt High Temperature Thermoelectric Generator |

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

    Department of Energy a 500 Watt High Temperature Thermoelectric Generator Development of a 500 Watt High Temperature Thermoelectric Generator A low temperature TEG has been built and tested providing over 500 watts electric power at a ∆T of 2000C PDF icon deer09_lagrandeur.pdf More Documents & Publications Development of a 100-Watt High Temperature Thermoelectric Generator Automotive Waste Heat Conversion to Power Program Automotive Waste Heat Conversion to Power Program

  10. How Energy-Efficient Light Bulbs Compare with Traditional Incandescent...

    Office of Environmental Management (EM)

    Energy-Efficient Light Bulbs Compare with Traditional Incandescents How Energy-Efficient Light Bulbs Compare with Traditional Incandescents November 5, 2014 - 11:39pm Addthis By...

  11. Consumer Light Bulb Changes: Briefing and Resources for Media...

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

    Consumer Light Bulb Changes: Briefing and Resources for Media and Retailers Consumer Light Bulb Changes: Briefing and Resources for Media and Retailers This presentation provides...

  12. Tennessee Nuclear Profile - Watts Bar Nuclear Plant

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

    Watts Bar Nuclear Plant" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License expiration date" 1,"1,123","9,738",99.0,"PWR","application/vnd.ms-excel","application/vnd.ms-excel" ,"1,123","9,738",99.0 "Data for 2010" "PWR = Pressurized Light Water

  13. Specification for strontium-90 500-watt(e) radioisotopic thermoelectric generator. Final report

    SciTech Connect (OSTI)

    Hammel, T.; Himes, J.; Lieberman, A.; McGrew, J.; Owings, D.; Schumann, F.

    1983-04-01

    A conceptual design for a demonstration 500-watt(e) radioisotopic thermoelectric generator has been created for the Department of Energy. The design effort was divided into two tasks, viz., create a design specification for a capsule strength member that utilizes a standard Strontium-90 fluoride-filled WESF inner liner, and create a conceptual design for a 500-watt(e) RTG. Both tasks have been accomplished. The strength-member specification was designed to survive an external pressure of 24,500 psi and meet the requirements of special-form radioisotope heat sources. Therefore the capsule can, if desired, be licensed for domestic and international transport. The design for the RTG features a radioisotopic heat source, an array of nine capsules in a tungsten biological shield, four current-technology series-connected thermoelectric-conversion modules, low-conductivity thermal insulation, and a passive finned-housing radiator for waste-heat dissipation. The preliminary RTG specification formulated previous to contract award has been met or exceeded. The power source will generate the required power for the required service period at 28 volts dc with a conversion efficiency of 8%, provided the existing in-pool capsules at WESF meet the assumed thermal-inventory requirements.

  14. How Energy-Efficient Light Bulbs Compare with Traditional Incandescents |

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

    Department of Energy Electricity & Fuel » Lighting » How Energy-Efficient Light Bulbs Compare with Traditional Incandescents How Energy-Efficient Light Bulbs Compare with Traditional Incandescents By replacing your home's five most frequently used light fixtures or bulbs with models that have earned the ENERGY STAR, you can save $75 each year. By replacing your home's five most frequently used light fixtures or bulbs with models that have earned the ENERGY STAR, you can save $75 each

  15. Purchasing Energy-Efficient Light Bulbs

    Broader source: Energy.gov [DOE]

    The Federal Energy Management Program (FEMP) provides acquisition guidance for light bulbs, a product category covered by ENERGY STAR. Federal laws and requirements mandate that agencies purchase ENERGY STAR qualified products or FEMP designated products in all product categories covered by these programs and in any acquisition actions that are not specifically exempted by law.

  16. Kill-a-Watt Contest at UCF | Department of Energy

    Office of Environmental Management (EM)

    Kill-a-Watt Contest at UCF Kill-a-Watt Contest at UCF April 2, 2010 - 5:16pm Addthis The University of Central Florida has created an innovative way to save energy and money on campus through a new dorm-based competition called "Kill-a-Watt". Students representing campus residence halls compete against each other to achieve energy savings and can receive up to $200 in scholarships. Watch how former DOE intern and current UCF DOE Campus Ambassador, Chris Castro, is spearheading this

  17. Sulphur Springs Valley EC - SunWatts Rebate Program | Department...

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

    The SunWatts Program offers home and business owners incentives for purchasing photovoltaic (PV), wind and solar water heating systems. Systems must be grid-connected to be...

  18. Trico Electric Cooperative- SunWatts Incentive Program

    Broader source: Energy.gov [DOE]

    Through the SunWatts Program, Trico Electric Cooperative offers residential and business customers a rebate for installing solar water heaters. Rebates equal $0.40 per expected first year of...

  19. How Energy-Efficient Light Bulbs Compare with Traditional Incandescent...

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

    used light fixtures or bulbs with models that have earned the ENERGY STAR, you can save 75 each year. Compared to traditional incandescents, energy-efficient lightbulbs...

  20. The History of the Light Bulb | Department of Energy

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

    the Light Bulb The History of the Light Bulb November 22, 2013 - 1:00pm Addthis Read more about the History of the Light Bulb. Rebecca Matulka Rebecca Matulka Former Digital Communications Specialist, Office of Public Affairs Daniel Wood Daniel Wood Data Visualization and Cartographic Specialist, Office of Public Affairs What are the key facts? Like all great inventions, the light bulb can't be credited to one inventor. It was a series of small improvements on the ideas of previous inventors

  1. VP 100: Retooling Michigan -- Yachts and Watts | Department of Energy

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

    Retooling Michigan -- Yachts and Watts VP 100: Retooling Michigan -- Yachts and Watts June 18, 2010 - 4:13pm Addthis Energetx Composites was able to purchase equipment such as this mold for utility-scale wind turbine blades thanks to a Recovery Act grant that matched the company’s $3.5 million investment. | Photo Courtesy of Energetx | Energetx Composites was able to purchase equipment such as this mold for utility-scale wind turbine blades thanks to a Recovery Act grant that matched the

  2. Third generation development of an 11-watt Stirling converter

    SciTech Connect (OSTI)

    Montgomery, W.L.; Ross, B.A.; Penswick, L.B.

    1996-12-31

    This paper describes recent design enhancements, performance results, and development of an artificial neural network (ANN) model related to the Radioisotope Stirling Generator (RSG), an 11-watt converter designed for remote power applications. Design enhancements include minor changes to improve performance, increase reliability, facilitate fabrication and assembly for limited production, and reduce mass. Innovative modifications were effected to increase performance and improve reliability of the vacuum foil insulation (VFI) package and linear alternator. High and low operating temperature acceptance testing of the Engineering Model (EM) demonstrated the robust system characteristics. These tests were conducted for 1 week of operation each, with rejector temperatures of 95 C and 20 C, respectively. Endurance testing continues for a complete Stirling converter, the Development Model (DM), with over 25,000 hours of maintenance-free operation. Endurance testing of flexures has attained over 540 flexure-years and endurance testing of linear motors/alternators has achieved nearly 27,000 hours of operation without failure. An ANN model was developed and tested successfully on the DM. Rejection temperatures were varied between 3 C and 75 C while load voltages ranged between engine stall and displacer overstroke. The trained ANN model, based solely on externally measured parameters, predicted values of piston amplitude, displacer amplitude, and piston-displacer phase angle within {+-}2% of the measured values over the entire operating regime. The ANN model demonstrated its effectiveness in the long-term evaluation of free-piston Stirling machines without adding the complexity, reduced reliability, and increased cost of sophisticated diagnostic instrumentation.

  3. Limiter

    DOE Patents [OSTI]

    Cohen, S.A.; Hosea, J.C.; Timberlake, J.R.

    1984-10-19

    A limiter with a specially contoured front face is provided. The front face of the limiter (the plasma-side face) is flat with a central indentation. In addition, the limiter shape is cylindrically symmetric so that the limiter can be rotated for greater heat distribution. This limiter shape accommodates the various power scrape-off distances lambda p, which depend on the parallel velocity, V/sub parallel/, of the impacting particles.

  4. Westinghouse Pays $50,000 Civil Penalty to Resolve Light Bulb...

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

    Westinghouse Pays 50,000 Civil Penalty to Resolve Light Bulb Efficiency Violations Westinghouse Pays 50,000 Civil Penalty to Resolve Light Bulb Efficiency Violations December 13, ...

  5. Limiter

    DOE Patents [OSTI]

    Cohen, Samuel A. (Hopewell, NJ); Hosea, Joel C. (Princeton, NJ); Timberlake, John R. (Allentown, NJ)

    1986-01-01

    A limiter with a specially contoured front face accommodates the various power scrape-off distances .lambda..sub.p, which depend on the parallel velocity, V.sub..parallel., of the impacting particles. The front face of the limiter (the plasma-side face) is flat with a central indentation. In addition, the limiter shape is cylindrically symmetric so that the limiter can be rotated for greater heat distribution.

  6. Lead test assembly irradiation and analysis Watts Bar Nuclear Plant, Tennessee and Hanford Site, Richland, Washington

    SciTech Connect (OSTI)

    1997-07-01

    The U.S. Department of Energy (DOE) needs to confirm the viability of using a commercial light water reactor (CLWR) as a potential source for maintaining the nation`s supply of tritium. The Proposed Action discussed in this environmental assessment is a limited scale confirmatory test that would provide DOE with information needed to assess that option. This document contains the environmental assessment results for the Lead test assembly irradiation and analysis for the Watts Bar Nuclear Plant, Tennessee, and the Hanford Site in Richland, Washington.

  7. White LED Benchmark of 65 Lumens Per Watt Achieved

    Broader source: Energy.gov [DOE]

    Novel chip design and the balance of multiple interrelated design parameters have enabled Cree, Inc.'s Santa Barbara Technology Center to demonstrate white LEDs with efficacies greater than 65 lumens per watt at 350 mA. The results are particularly significant because they were achieved with a pre-production prototype chip using the same package used in Cree's commercially available XLamp® 7090 high power LED, rather than a laboratory device.

  8. How Energy-Efficient Light Bulbs Compare with Traditional Incandescents |

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

    Department of Energy By replacing your home's five most frequently used light fixtures or bulbs with models that have earned the ENERGY STAR, you can save $75 each year. By replacing your home's five most frequently used light fixtures or bulbs with models that have earned the ENERGY STAR, you can save $75 each year. Compared to traditional incandescents, energy-efficient lightbulbs such as halogen incandescents, compact fluorescent lamps (CFLs), and light emitting diodes (LEDs) have the

  9. Rock the Watt: An Energy Conservation Campaign at Pacific Northwest National Lab

    Energy Savers [EERE]

    Rock the Watt was a direct applica- tion of the Framework for Organiza- tional Change that included building sustainability champions, integration of a sustainability checklist, and sup- port for employees to come up with their own energy saving actions. Rock the Watt: An Energy Conservation Campaign at Pacific Northwest National Lab Pacifc Northwest National Laboratory (PNNL), one of the seventeen Department of Energy laboratories, implemented the 3-month Rock the Watt campaign in FY2015 to

  10. Rock the Watt: An Energy Conservation Campaign at Pacific Northwest National Lab

    Broader source: Energy.gov [DOE]

    Case study describes Pacific Northwest National Laboratory's three-month Rock the Watt campaign to reduce energy use at its main campus in Richland, Washington.

  11. ORNL Trusted Corridors Project: Watts Bar Dam Inland Waterway Project

    SciTech Connect (OSTI)

    Walker, Randy M; Gross, Ian G; Smith, Cyrus M; Hill, David E

    2011-11-01

    Radiation has existed everywhere in the environment since the Earth's formation - in rocks, soil, water, and plants. The mining and processing of naturally occurring radioactive materials for use in medicine, power generation, consumer products, and industry inevitably generate emissions and waste. Radiological measuring devices have been used by industry for years to measure for radiation in undesired locations or simply identify radioactive materials. Since the terrorist attacks on the United States on 9-11-01 these radiation measuring devices have proliferated in many places in our nation's commerce system. DOE, TVA, the Army Corps and ORNL collaborated to test the usefulness of these devices in our nation's waterway system on this project. The purpose of the Watts Bar Dam ORNL Trusted Corridors project was to investigate the security, safety and enforcement needs of local, state and federal government entities for state-of-the-art sensor monitoring in regards to illegal cargo including utilization of the existing infrastructure. TVA's inland waterways lock system is a recognized and accepted infrastructure by the commercial carrier industry. Safety Monitoring activities included tow boat operators, commercial barges and vessels, recreational watercraft and their cargo, identification of unsafe vessels and carriers, and, monitoring of domestic and foreign commercial vessels and cargo identification. Safety Enforcement activities included cargo safety, tracking, identification of hazardous materials, waterway safety regulations, and hazardous materials regulations. Homeland Security and Law Enforcement Applications included Radiological Dispersive Devices (RDD) identification, identification of unsafe or illicit transport of hazardous materials including chemicals and radiological materials, and screening for shipments of illicit drugs. In the Fall of 2005 the SensorNet funding for the project expired. After several unsuccessful attempts to find a Federal sponsor to continue with the project, the Watts Bar Dam Project was canceled and the Exploranium radiation monitors were removed from the doors of Watts Bar Dam in early 2006. The DHS Domestic Nuclear Detection Office decided to proceed with a Pilot building on the ORNL work performed at the TN and SC weigh stations in the highway sector of the Trusted Corridors project and eventually expanded it to other southern states under the name of Southeastern Corridor Pilot Project (SETCP). Many of the Phase I goals were achieved however real-world test data of private watercraft and barges was never obtained.

  12. Further testing and development of an 11-watt Stirling converter

    SciTech Connect (OSTI)

    Ross, B.A.; Montgomery, W.L.

    1995-12-31

    Three previous IECEC papers describe the development of an 11-watt Radioisotope Stirling Generator (RSG) intended for remote power applications. This paper describes more recent testing and development activities. Testing of the engineering model (EM) was performed to determine the effect of heat rejection temperature, thermal input and initial charge pressure on thermal efficiency. Shock testing of the generator included a drop test and 3 hours of testing in a random vibration environment where g{sup 2}/Hz = 0.04. Endurance testing of a complete Stirling converter continues, with over 15,000 maintenance-free operating hours. Endurance testing of critical subsystems and components has achieved 14,000 to 26,000 hours of operation without failure. Minor changes to the RSG prototype design, based on the development of the EM, are described.

  13. Text-Alternative Version: L Prize™: The Race for Super Efficient Light Bulbs

    Broader source: Energy.gov [DOE]

    Below is the text-alternative version of the L Prize™: The Race for Super Efficient Light Bulbs webcast.

  14. Small stirling dynamic isotope power systems for multihundred-watt robotic missions

    SciTech Connect (OSTI)

    Bents, D.J.

    1991-01-01

    Free piston Stirling Engine (FPSE) and linear alternator (LA) technology is combined with radioisotope heat sources to produce a compact dynamic isotope power system (DIPS) suitable for multihundred watt space application which appears competitive with advanced radioisotope thermoelectric generators (RTGs). The small Stirling DIPS is scalable to multihundred watt power levels or lower. The FPSE/LA is a high efficiency convertor in sizes ranging from tens of kilowatts down to only a few watts. At multihundred watt unit size, the FPSE can be directly integrated with the General Purpose Heat Source (GPHS) via radiative coupling; the resulting dynamic isotope power system has a size and weight that compares favorably with the advanced modular (Mod) RTG, but requires less than a third the amount of isotope fuel. Thus the FPSE extends the high efficiency advantage of dynamic systems into a power range never previously considered competitive for DIPS. This results in lower fuel cost and reduced radiological hazard per delivered electrical watt.

  15. Is the hourly data I get from NREL's PV Watts program adjusted...

    Open Energy Info (EERE)

    Is the hourly data I get from NREL's PV Watts program adjusted for daylight savings time. Home I take the hourly AC output numbers and apply them to a program I built that assigns...

  16. Watt-Sun: A Multi-Scale, Multi-Model, Machine-Learning Solar Forecasting

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

    Technology | Department of Energy Watt-Sun: A Multi-Scale, Multi-Model, Machine-Learning Solar Forecasting Technology Watt-Sun: A Multi-Scale, Multi-Model, Machine-Learning Solar Forecasting Technology IBM logo.png As part of this project, new solar forecasting technology will be developed that leverages big data processing, deep machine learning, and cloud modeling integrated in a universal platform with an open architecture. Similar to the Watson computer system, this proposed technology

  17. AVTA: GE Energy WattStation AC Level 2 Charging System Testing Results |

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

    Department of Energy Energy WattStation AC Level 2 Charging System Testing Results AVTA: GE Energy WattStation AC Level 2 Charging System Testing Results The Vehicle Technologies Office's Advanced Vehicle Testing Activity carries out testing on a wide range of advanced vehicles and technologies on dynamometers, closed test tracks, and on-the-road. These results provide benchmark data that researchers can use to develop technology models and guide future research and development. The

  18. Final project report on arsenic biogeochemistry in the Clinch River and Watts Bar Reservoir: Volume 2, Quality assurance/quality control summary report for arsenic biogeochemistry in the Clinch River and Watts Bar Reservoir. Environmental Restoration Program

    SciTech Connect (OSTI)

    Newman, K.A.; Ford, C.J.; Byrd, J.T.

    1995-04-01

    Arsenic contamination was studied in the Clinch River/Watts Bar Reservoir (CR/WBR) system downstream from the US Department of Energy`s Oak Ridge Reservation (ORR). Arsenic is of particular interest and concern because (1) it occurs commonly in coal-bearing rock and waste products such as fly ash associated with the burning of coal, (2) it is classified as a Class A carcinogen by the US Environmental Protection Agency, and (3) disposal of fly ash, both on and off the ORR, may have contaminated surface water and sediments in the Clinch River and Watts Bar Reservoir. The present study dffers from previous reports on arsenic concentrations in the CR/WBR system in the use of much more sensitive and precise processing and analytical techniques to measure arsenic species (arsenate, arsenite, and organic arsenic) at levels well below the ecological and human health risk screening criteria. The absolute detection limits using these techniques are approximately 20 to 40 pmol/L or 0.0015 to 0.003 {mu}g/L.

  19. Consumer Light Bulb Changes: Briefing and Resources for Media and Retailers

    Energy Savers [EERE]

    | Department of Energy Consumer Light Bulb Changes: Briefing and Resources for Media and Retailers Consumer Light Bulb Changes: Briefing and Resources for Media and Retailers This presentation provides helpful background information on the new legislation and the types of energy-efficient lighting available today. PDF icon Consumer Light Bulb Changes: Briefing and Resources for Media and Retailers More Documents & Publications Interior Lighting Efficiency for Municipalities Lighting Tip

  20. Buying the Perfect Energy-Efficient Light Bulb in 5 Easy Steps | Department

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

    of Energy Buying the Perfect Energy-Efficient Light Bulb in 5 Easy Steps Buying the Perfect Energy-Efficient Light Bulb in 5 Easy Steps September 11, 2014 - 2:00pm Addthis Shopping for energy-efficient light bulbs just got easier! | Photo courtesy of iStockphotography.com/Thomas_EyeDesign Shopping for energy-efficient light bulbs just got easier! | Photo courtesy of iStockphotography.com/Thomas_EyeDesign Paige Terlip Paige Terlip Former Communicator, National Renewable Energy Laboratory How

  1. Results of Performance Tests Performed on the John Watts Casing Connection on 7" Pipe

    SciTech Connect (OSTI)

    John D. Watts

    1999-08-01

    Stress Engineering Services (SES) was contracted by Mr. John Watts to test his threaded connection developed for oilfield oil and gas service. This particular test required the application of a variety of loads including axial tension and compression, internal pressure (gas), external pressure (water), bending and both low and elevated temperature. These loads were used to determine the sealing and structural limits of the connection. The connection design tested had tapered threads with 10 threads per inch. A square thread form and a round thread form were tested. The square thread form had a 2{sup o} load flank and 15{sup o} stab flank. The round thread had a 0{sup o} load flank and 20{sup o} stab flank. Most of the testing was performed on the round thread form. Both a coupled connection design and an integral connection design were tested. The coupling was a pin by pin (male) thread, with the pipe having a box (female) thread. Both designs have outside and inside diameters that are flush with the pipe body. Both designs also contain a small external shoulder. The test procedure selected for this evaluation was the newly written ISO 13679 procedure for full scale testing of casing and tubing connections. The ISO procedure requires a variety of tests that includes makeup/breakout testing, internal gas sealability/external water sealability testing with axial tension, axial compression, bending, internal gas thermal cycle tests and limit load (failure) tests. This test was performed with four coupled samples and included most of these loads. Two integral samples were also included for limit load testing ISO makeup/breakout tests are divided into three types--initial makeup, IML1, repeated makeup within the same sample, MBL, and repeated makeup using several samples called round robin, RR. IMU and MBL were performed in this project. The ISO sealing and structural procedure is divided into four primary tests and identified as Series A, B, C and Limit Load (failure). Series A and B test to 95% actual yield of the pipe and Series C uses 90% of actual yield. Samples 1 and 3 were tested to Series A and the loads are shown in Figure 1. For these samples, the axial compression was limited to 75% pipe body yield, which was set by Mr. Watts at the beginning of the test. Samples 2 and 4 were tested to Series B with loads shown in Figure 2. This series included 20 degrees per 100 feet bending but no external pressure. Due to premature leaks, no samples were subjected to Series C which included mechanical and thermal cycles. Samples 5 and 6 were tested to failure. The project started with the selection and purchase of a popular size of oilfield pipe, which was 7-inch OD, 32 pound per foot, P-110 casing. While the connections were being threaded, material tensile tests were performed to get the actual strength of the 7-inch pipe. The first samples contained a square thread form. Excessive galling was experienced during the first series of makeup/breakout tests and Mr. Watts decided to change the thread form and remachine the samples. The second samples had a round thread form and performed very well in the makeup/breakout tests. Basically no galling occurred of any consequence. Samples 1 and 3 were to be tested with external water (ISO Series A) while samples 2 and 4 were to be tested with bending (ISO Series B, no external pressure). Testing of all four samples started with tension and internal gas pressure. During this initial pressure testing, samples 1, 3 and 4 developed leaks and the test was stopped before any external pressure or bending was applied. Sample 2 successfully tested to ISO Load Point 5 which included bending before developing a leak. Figure 3 shows the loads at which the samples leaked and the relative pipe body performance capability. Sample 1 and end A of sample 2 held a high pressure while samples 3, 4 and end B of sample 2 leaked at relatively low pressures. All of these leaks were with nitrogen gas pressure. After reviewing the results, it was believed that several conditions may have contributed to the prema

  2. Final Project Report on Arsenic Biogeochemistry in the Clinch River and Watts Bar Reservoir, Volume 2: Quality Assurance/Quality Control Summary Report for Arsenic Biogeochemistry in the Clinch River and Watts Bar Reservoir

    SciTech Connect (OSTI)

    Newman, K.A.

    1995-01-01

    Arsenic contamination was studied in the Clinch River/Watts Bar Reservoir (CR/WBR) system downstream from the U.S. Department of Energy's Oak Ridge Reservation (ORR). Arsenic is of particular interest and concern because (1) it occurs commonly in coal-bearing rock and waste products such as fly ash associated with the burning of coal, (2) it is classified as a Class A carcinogen by the U. S. Environmental Protection Agency, and (3) disposal of fly ash, both on and off the ORR, may have contaminated surface water and sediments in the Clinch River and Watts Bar Reservoir. The present study differs from previous reports on arsenic concentrations in the CR/WBR system in the use of much more sensitive and precise processing and analytical techniques to measure arsenic species (arsenate, arsenite, and organic arsenic) at levels well below the ecological and human health risk screening criteria. The absolute detection limits using these techniques are approximately 20 to 40 pmol/L, or 0.0015 to 0.003 {micro}g/L. Four main sites were sampled quarterly over a 3-year period (1990 through 1992). Sites investigated included Lower Watts Bar Reservoir near the Watts Bar Dam (Tennessee River kilometer 849.6), the Kingston area (Clinch River kilometer 1.6), Poplar Creek (Poplar Creek kilometer 1.6), and the McCoy Branch Embayment (McCoy Branch kilometer 0.3). Additional sites were investigated in the vicinity of these main stations to determine the distribution of contamination and to identify possible alternative or additional sources of arsenic. Detection limits that were a factor of 20 below the minimum risk screening criteria were achieved for 100% of arsenic speciation data. However, 118 samples for inductively coupled plasma metals analysis were not preserved to analytical specifications, and the analytical holding times for 180 ion chromatography samples were not met. More rigorous preservative testing protocols and more tightly defined analytical statements of work will prevent these problems in the future. Introduction, background, materials and methods, results, discussion, and conclusions are presented in Volume 1. The Quality Assurance/Quality Control Summary Report; the listing of water quality and surface water arsenic speciation data by source and site; and the listing of pore water arsenic speciation and particle-to-water distribution coefficients for As, Fe, and Mn by source, site, and season are presented in Volume 2. The Clinch River Environmental Restoration Program is currently completing the second phase of the Clinch River Remedial Investigation, with the intent of performing a baseline risk assessment on collected data. The data collected for this report will contribute to the baseline risk assessment for the Clinch River. Many of the goals of the Clinch River Remedial Investigation were refined using the results of this study.

  3. Rock the Watt: An Energy Conservation Campaign at Pacific Northwest National Lab

    SciTech Connect (OSTI)

    2016-01-01

    Case study describes Pacific Northwest National Laboratory's (PNNL) three-month Rock the Watt campaign to reduce energy use at its main campus in Richland, Washington. The campaign objectives were to educate PNNL employees about energy conservation opportunities in their workplace and to motivate them to help PNNL save energy and costs and to reduce greenhouse gas emissions.

  4. Rise and Shine: Lighting the World with 10 Billion LED Bulbs | Department

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

    of Energy Rise and Shine: Lighting the World with 10 Billion LED Bulbs Rise and Shine: Lighting the World with 10 Billion LED Bulbs December 7, 2015 - 9:23am Addthis Rise and Shine: Lighting the World with 10 Billion LED Bulbs Gabrielle Dreyfus, Ph.D. Gabrielle Dreyfus, Ph.D. Senior Policy Analyst, Office of International Climate and Clean Energy. Chad Gallinat, Ph.D. Chad Gallinat, Ph.D. International Climate Fellow, Office of International Climate and Clean Energy Stand next to a

  5. Which Bulb Is Right for You? (Low-Resolution JPG Billboard) ...

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

    Low-resolution JPG of billboard reading, 'Which bulb is right for you? Save energy, save money. Energysaver.gov. Image icon DoEBillboardWhichBulbweb.jpg More Documents & ...

  6. DOE Requires Westinghouse to Cease Sales of Two Light Bulb Models and Allows Sale of Another

    Broader source: Energy.gov [DOE]

    As a part of DOE's continuing enforcement action against Westinghouse Lighting Corporation, the company must cease sales of two light bulb models - medium based CFL basic model 15GLOBE/65/2 ...

  7. New Lighting Facts Label: Takes the Guess Work Out of Shopping for Light Bulbs

    Broader source: Energy.gov [DOE]

    If you're like me, it sometimes feels overwhelming standing at the store and staring at a big wall of light bulbs, trying to understand all the lighting choices.

  8. Evaluation Helps Program Increase Sales of Energy Saving Light Bulbs Among Women

    Broader source: Energy.gov [DOE]

    This document, from the Wisconsin Focus on Energy / ENERGY STAR Products Program, is part of the Case Study Series, explaining how "Evaluation Helps Program Increase Sales of Energy Saving Light Bulbs Among Women."

  9. Evaluation Helps Program Increase Sales of Energy Saving Light Bulbs Among Women

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

    Case Study Series-Demonstrating the Value of Program Evaluation 
 ENERGY STAR Products Program Wisconsin Focus on Energy Evaluation Helps Program Increase Sales of Energy Saving Light Bulbs Among Women Evaluation findings prompted a Wisconsin energy efficiency program to modify its program design, resulting in increased sales of compact fluorescent light bulbs (CFLs) among women- which evaluation showed were a key target market for growth. The Focus on Energy ENERGY STAR Products Program

  10. Consumer Light Bulb Changes: Briefing and Resources for Media and Retailers

    Office of Environmental Management (EM)

    Briefing for Media and Retailers - Lighting eere.energy.gov 1 Consumer Light Bulb Changes: Briefing and Resources for Media and Retailers Briefing for Media and Retailers - Lighting eere.energy.gov 2 * Briefing: - To schedule interviews, please contact DOE Public Affairs at 202-586-4940 * Terms: - Lumens: Commonly a measure of brightness (technically "luminous flux") - CFL: Compact Fluorescent Lamp: The curly fluorescent bulbs - LED: Light Emitting Diode: more recently emerging

  11. Ablamp Limited | Open Energy Information

    Open Energy Info (EERE)

    Manufacturer of energy-saving Compact Fluorescent Light Bulbs, solar-powered lights, LED bulbs, auto lamps and other speciality lamps. Coordinates: 23.049681, 113.173737...

  12. Investigating Aeroelastic Performance of Multi-Mega Watt Wind Turbine Rotors Using CFD

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

    Investigating Aeroelastic Performance of Multi-MegaWatt Wind Turbine Rotors Using CFD David A. Corson 1 Altair Engineering, Inc., Clifton Park, NY, 12065 D. Todd Griffith 2 Sandia National Laboratories, Albuquerque, NM, 87185 Tom Ashwill 3 Sandia National Laboratories, Albuquerque, NM, 87185 Farzin Shakib 4 Altair Engineering, Inc., Mountain View, CA, 94043 Recent trends in wind power technology are focusing on increasing power output through an increase in rotor diameter. As the rotor diameter

  13. Recommendation and implementation of special seasonal flow releases to enhance sauger spawning in Watts Bar tailwater

    SciTech Connect (OSTI)

    Yeager, B.; Shiao, Ming.

    1992-05-01

    In recent years sauger populations in Chickamauga Reservoir, as well as several other areas in the Tennessee River Valley, have suffered drastic declines in numbers. Based on field creel evaluations the fisherman harvest of sauger in Chickamauga Reservoir has declined from an estimated high of 66,000 fish caught in 1979 to 0 fish in 1989. The Tennessee Wildlife Resources Agency began an aggressive effort in 1990 and 1991 to recover this population, as well as those of Ft. Loudon and Watts Bar Reservoirs, by stocking large numbers of fingerling sauger. This is however, only a short-term, stopgap measure. The decline in the population of Chickamauga Reservoir appears directly related to dramatically lower discharges from Watts Bar Dam during the recent drought. The primary factor affecting year-class strength (numbers of sauger successfully spawned in a year and reaching catchable size in subsequent years) is the amount of spawning habitat available in the month of April (the spawning season for sauger) at one particular site below Watts Bar Dam. This report documents studies aimed at optimizing sauger spawning in Chickamauga Reservoir.

  14. What Light Bulbs Do You Use in Your Home? | Department of Energy

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

    Eric Barendsen posted about the differences in costs between traditional and energy efficient light bulbs. Several people already chimed in on the original post. (Thanks a bunch for sharing!) But for today's question of the week, we're wondering: What light bulbs do you use in your own home? You have the chance to share your thoughts on a question about energy efficiency or renewable energy for consumers. E-mail your responses to the Energy Saver team at consumer.webmaster@nrel.gov. Addthis

  15. Why Did the LED Light Bulb Cross the Road? | Department of Energy

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

    Why Did the LED Light Bulb Cross the Road? Why Did the LED Light Bulb Cross the Road? January 24, 2012 - 1:31pm Addthis Big Bill and Little Bill are here to talk with you about energy efficiency on behalf of Energy Impact Illinois. Roland Risser Roland Risser Program Director, Building Technologies Office How can I participate? You can view all of Big Bill and Little Bill's videos on the Energy Bill's YouTube channel. Everyone knows that laughter is good for you. Studies suggest it can buffer

  16. Lumen Maintenance Testing of the Philips 60-Watt Replacement Lamp L Prize Entry

    SciTech Connect (OSTI)

    Gordon, Kelly L.; Hafen, Ryan P.; Hathaway, John E.; McCullough, Jeffrey J.

    2012-09-01

    This paper describes testing conducted to evaluate the Philips' L Prize award winning 60-watt LED replacement product's ability to meet the lifetime/lumen maintenance requirement of the competition, which was: "having 70 percent of the lumen value under subparagraph (A) [producing a luminous flux greater than 900 lumens] exceeding 25,000 hours under typical conditions expected in residential use." A custom test apparatus was designed and constructed for this testing and a statistical approach was developed for use in evaluating the test results. This will be the only publicly available, third-party data set of long-term LED product operation.

  17. Remedial investigation/feasibility study report for Lower Watts Bar Reservoir Operable Unit

    SciTech Connect (OSTI)

    1995-03-01

    This document is the combined Remedial Investigation and Feasibility Study Report for the lower Watts Bar Reservoir (LWBR) Operable Unit (OU). The LWBR is located in Roane, Rhea, and Meigs counties, Tennessee, and consists of Watts Bar Reservoir downstream of the Clinch river. This area has received hazardous substances released over a period of 50 years from the US Department of Energy`s Oak Ridge Reservation (ORR), a National Priority List site established under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). As required by this law, the ORR and all off-site areas that have received contaminants, including LWBR, must be investigated to determine the risk to human health and the environment resulting from these releases, the need for any remedial action to reduce these risks, and the remedial actions that are most feasible for implementation in this OU. Contaminants from the ORR are primarily transported to the LWBR via the Clinch River. There is little data regarding the quantities of most contaminants potentially released from the ORR to the Clinch River, particularly for the early years of ORR operations. Estimates of the quantities released during this period are available for most radionuclides and some inorganic contaminants, indicating that releases 30 to 50 years ago were much higher than today. Since the early 1970s, the release of potential contaminants has been monitored for compliance with environmental law and reported in the annual environmental monitoring reports for the ORR.

  18. DOE Publishes Final Rule for the Request for Exclusion of 100 Watt R20 Short Incandescent Reflector Lamps from Energy Conservation Standards

    Broader source: Energy.gov [DOE]

    The Department of Energy has published a final rule regarding the request for exclusion of 100 Watt R20 short incandescent reflector lamps from energy conservation standards.

  19. Westinghouse Pays $50,000 Civil Penalty to Resolve Light Bulb Efficiency

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

    Violations | Department of Energy Department of Energy has successfully resolved the enforcement case against Westinghouse Lighting Corporation for failure to certify its light bulbs as compliant with DOE's federal efficiency requirements and for the sale of at least 29,000 general service fluorescent and medium base compact fluorescent lamps that used more energy than permitted by law. This case reflects DOE's renewed commitment to enforce the federal efficiency requirements systematically

  20. Annual radiological environmental monitoring report: Watts Bar Nuclear Plant, 1992. Operations Services/Technical Programs

    SciTech Connect (OSTI)

    Not Available

    1993-04-01

    This report describes the preoperational environmental radiological monitoring program conducted by TVA in the vicinity of the Watts Bar Nuclear Plant (WBN) in 1992. The program includes the collection of samples from the environment and the determination of the concentrations of radioactive materials in the samples. Samples are taken from stations in the general area of the plant and from areas that will not be influenced by plant operations. Material sampled includes air, water, milk, foods, vegetation, soil, fish, sediment, and direct radiation levels. During plant operations, results from stations near the plant will be compared with concentrations from control stations and with preoperational measurements to determine potential impacts to the public. Exposures calculated from environmental samples were contributed by naturally occurring radioactive materials, from materials commonly found in the environment as a result of atmospheric fallout, or from the operation of other nuclear facilities in the area. Since WBN has not operated, there has been no contribution of radioactivity from the plant to the environment.

  1. Recommendation and implementation of special seasonal flow releases to enhance sauger spawning in Watts Bar tailwater. Final report

    SciTech Connect (OSTI)

    Yeager, B.; Shiao, Ming

    1992-05-01

    In recent years sauger populations in Chickamauga Reservoir, as well as several other areas in the Tennessee River Valley, have suffered drastic declines in numbers. Based on field creel evaluations the fisherman harvest of sauger in Chickamauga Reservoir has declined from an estimated high of 66,000 fish caught in 1979 to 0 fish in 1989. The Tennessee Wildlife Resources Agency began an aggressive effort in 1990 and 1991 to recover this population, as well as those of Ft. Loudon and Watts Bar Reservoirs, by stocking large numbers of fingerling sauger. This is however, only a short-term, stopgap measure. The decline in the population of Chickamauga Reservoir appears directly related to dramatically lower discharges from Watts Bar Dam during the recent drought. The primary factor affecting year-class strength (numbers of sauger successfully spawned in a year and reaching catchable size in subsequent years) is the amount of spawning habitat available in the month of April (the spawning season for sauger) at one particular site below Watts Bar Dam. This report documents studies aimed at optimizing sauger spawning in Chickamauga Reservoir.

  2. Fish Passage Through a Simulated Horizontal Bulb Turbine Pressure Regime: A Supplement to"Laboratory Studies of the Effects of Pressure and Dissolved Gas Supersaturation on Turbine-Passed Fish"

    SciTech Connect (OSTI)

    Abernethy, Cary S. ); Amidan, Brett G. ); Cada, G F.

    2003-07-31

    Migratory and resident fish in the Columbia River Basin are exposed to stresses associated with hydroelectric power production, including pressure changes during turbine passage. The responses of fall chinook salmon and bluegill sunfish to rapid pressure change was investigated at the Pacific Northwest National Laboratory. Previous test series evaluated the effects of passage through a vertical Kaplan turbine under the"worst case" pressure conditions and under less severe conditions where pressure changes were minimized. For this series of tests, pressure changes were modified to simulate passage through a horizontal bulb turbine, commonly installed at low head dams. The results were compared to results from previous test series. Migratory and resident fish in the Columbia River Basin are exposed to stresses associated with hydroelectric power production, including pressure changes during turbine passage. The responses of fall chinook salmon and bluegill sunfish to rapid pressure change was investigated at the Pacific Northwest National Laboratory. Previous test series evaluated the effects of passage through a vertical Kaplan turbine under the"worst case" pressure conditions and under less severe conditions where pressure changes were minimized. For this series of tests, pressure changes were modified to simulate passage through a horizontal bulb turbine, commonly installed at low head dams. The results were compared to results from previous test series. Both fish species were acclimated for 16-22 hours at either surface (101 kPa; 1 atm) or 30 ft (191 kPa; 1.9 atm) of pressure in a hyperbaric chamber before exposure to a pressure scenario simulating passage through a horizontal bulb turbine. The simulation was as follows: gradual pressure increase to about 2 atm of pressure, followed by a sudden (0.4 second) decrease in pressure to either 0.7 or 0.95 atm, followed by gradual return to 1 atm (surface water pressure). Following the exposure, fish were held at surface pressure for a 48-hour post exposure observation period. No fall chinook salmon died during or after exposure to the horizontal bulb turbine passage pressures, and no injuries were observed during the 48-hour post exposure observation period. As with the previous test series, it cannot be determined whether fall chinook salmon acclimated to the greater water pressure during the pretest holding period. For bluegill sunfish exposed to the horizontal bulb turbine turbine-passage pressures, only one fish died and injuries were less severe and less common than for bluegills subjected to either the"worst case" pressure or modified Kaplan turbine pressure conditions in previous tests. Injury rates for bluegills were higher at 0.7 atm nadir than for the 0.95 atm nadir. However, injuries were limited to minor internal hemorrhaging. Bluegills did not suffer swim bladder rupture in any tested scenarios. Tests indicated that for most of the cross-sectional area of a horizontal bulb turbine, pressure changes occurring during turbine passage are not harmful to fall chinook salmon and only minimally harmful to bluegill. However, some areas within a horizontal bulb turbine may have extreme pressure conditions that would be harmful to fish. These scenarios were not tested because they represent a small cross-sectional area of the turbine compared to the centerline pressures scenarios used in these tests.

  3. Untitled

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

    for households to see a simple payback from compact fluorescent bulbs depends on the price of electricity. Assuming a 26-watt compact fluorescent bulb that costs 22 dollars,...

  4. LED lamp or bulb with remote phosphor and diffuser configuration with enhanced scattering properties

    SciTech Connect (OSTI)

    Tong, Tao; Le Toquin, Ronan; Keller, Bernd; Tarsa, Eric; Youmans, Mark; Lowes, Theodore; Medendorp, Jr., Nicholas W; Van De Ven, Antony; Negley, Gerald

    2014-11-11

    An LED lamp or bulb is disclosed that comprises a light source, a heat sink structure and an optical cavity. The optical cavity comprises a phosphor carrier having a conversions material and arranged over an opening to the cavity. The phosphor carrier comprises a thermally conductive transparent material and is thermally coupled to the heat sink structure. An LED based light source is mounted in the optical cavity remote to the phosphor carrier with light from the light source passing through the phosphor carrier. A diffuser dome is included that is mounted over the optical cavity, with light from the optical cavity passing through the diffuser dome. The properties of the diffuser, such as geometry, scattering properties of the scattering layer, surface roughness or smoothness, and spatial distribution of the scattering layer properties may be used to control various lamp properties such as color uniformity and light intensity distribution as a function of viewing angle.

  5. Final project report on arsenic biogeochemistry in the Clinch River and Watts Bar Reservoir: Volume 1, Main text. Environmental Restoration Program

    SciTech Connect (OSTI)

    Ford, C.J.; Byrd, J.T.; Grebmeier, J.M.; Harris, R.A.; Moore, R.C.; Madix, S.E.; Newman, K.A.; Rash, C.D.

    1995-04-01

    This document reports on the study of arsenic contamination in the Clinch River/Watts Bar Reservoir (CR/WBR) system, downstream from the US Department of Energy`s Oak Ridge Reservation (ORR). Arsenic is of particular interest and concern because it occurs commonly in coal-bearing rock and waste products, such as fly ash associated with the burning of coal; it is classified as a Class A carcinogen by the Environmental Protection Agency; and disposal of fly ash, both on and off the ORR, may have contaminated surface water and sediments in the Clinch River and Watts Bar Reservoir. Four main sites were sampled quarterly over a 3-year period. Sites investigated included lower Watts Bar Reservoir near Watts Bar Dam [Tennessee River kilometer (TRK) 849.6], the Kingston area [Clinch River kilometer (CRK) 1.6], Poplar Creek, and the McCoy Branch Embayment. Additional sites were investigated in the vicinity of these main stations to determine the distribution of contamination and to identify possible alternative or additional sources of arsenic.

  6. Distinguished Lecture Series - Balancing the Energy & Climate Budget

    ScienceCinema (OSTI)

    None

    2010-09-01

    The average American uses 11400 Watts of power continuously. This is the equivalent of burning 114 x100 Watt light bulbs, all the time. The average person globally uses 2255 Watts of power, or a little less than 23 x100 Watt light bulbs.

  7. Transport and accumulation of cesium-137 and mercury in the Clinch River and Watts Bar Reservoir system. Environmental Restoration Program

    SciTech Connect (OSTI)

    Olsen, C.R.; Larsen, I.L.; Lowry, P.D.; Moriones, C.R.; Ford, C.J.; Dearstone, K.C.; Turner, R.R.; Kimmel, B.L.; Brandt, C.C.

    1992-06-01

    Operations and waste disposal activities at the Oak Ridge Y-12 Plant, the Oak Ridge National Laboratory (ORNL), and the Oak Ridge K-25 Site (formerly the Oak Ridge Gaseous Diffusion Plant) on the US Department of Energy (DOE) Oak Ridge Reservation (ORR) have introduced a variety of airborne, liquid, and solid wastes into the surrounding environment. Some of these wastes may affect off-site areas by entering local streams, which ultimately drain into the Clinch and Tennessee river system. Previously reported concentrations of radionuclides, metals and organic compounds in water, sediment, and biota of the Clinch River and Watts Bar Reservoir suggest the presence of a variety of contaminants of possible concern to the protection of human health and the environment. The work reported here represents part of the initial scoping phase for the Clinch River RCRA Facility Investigation. In this work, the distribution of {sup 137}Cs is used to identify contaminant accumulation patterns and potential problem, or ``hot-spot,`` areas with regard to environmental hazard or human health. Radiocesium was chosen for this scoping effort because (1) its history of release into the Clinch River is reasonably well documented, (2) it is easy and inexpensive to measure by gamma spectrometry, and (3) it is rapidly sorbed to particulate matter and thus serves as a cost-effective tracer for identifying the transport and accumulation patterns of many other particle-reactive contaminants, such as mercury (Hg), lead (Pb), and plutonium (Pu), and polychlorinated biphenyls (PCBs).

  8. Transport and accumulation of cesium-137 and mercury in the Clinch River and Watts Bar Reservoir system

    SciTech Connect (OSTI)

    Olsen, C.R.; Larsen, I.L.; Lowry, P.D.; Moriones, C.R.; Ford, C.J.; Dearstone, K.C.; Turner, R.R.; Kimmel, B.L.; Brandt, C.C.

    1992-06-01

    Operations and waste disposal activities at the Oak Ridge Y-12 Plant, the Oak Ridge National Laboratory (ORNL), and the Oak Ridge K-25 Site (formerly the Oak Ridge Gaseous Diffusion Plant) on the US Department of Energy (DOE) Oak Ridge Reservation (ORR) have introduced a variety of airborne, liquid, and solid wastes into the surrounding environment. Some of these wastes may affect off-site areas by entering local streams, which ultimately drain into the Clinch and Tennessee river system. Previously reported concentrations of radionuclides, metals and organic compounds in water, sediment, and biota of the Clinch River and Watts Bar Reservoir suggest the presence of a variety of contaminants of possible concern to the protection of human health and the environment. The work reported here represents part of the initial scoping phase for the Clinch River RCRA Facility Investigation. In this work, the distribution of {sup 137}Cs is used to identify contaminant accumulation patterns and potential problem, or hot-spot,'' areas with regard to environmental hazard or human health. Radiocesium was chosen for this scoping effort because (1) its history of release into the Clinch River is reasonably well documented, (2) it is easy and inexpensive to measure by gamma spectrometry, and (3) it is rapidly sorbed to particulate matter and thus serves as a cost-effective tracer for identifying the transport and accumulation patterns of many other particle-reactive contaminants, such as mercury (Hg), lead (Pb), and plutonium (Pu), and polychlorinated biphenyls (PCBs).

  9. Results of sediment and water sampling for inorganic, organic, and radionuclide analysis at recreation areas and water intakes -- Norris, Melton Hill, and Watts Bar Lakes. Data report

    SciTech Connect (OSTI)

    1991-10-01

    Suspected water quality contamination in Watts Bar Reservoir as a result of activities in past decades at the Department of Energy`s (DOE) Oak Ridge facility is of public concern. DOE, the Tennessee Valley Authority (TVA), the State of Tennessee, and other agencies and officials have received many inquiries from the public in recent years concerning this suspected pollution, especially how this potential contamination may affect the health and safety of those persons who use beaches in the area for swimming or other water-body-contact sports. As a result of these concerns, TVA conducted a study in May and June 1991 to obtain data on potential contaminants of concern in the water and sediment of Watts Bar Reservoir. TVA collected water and sediment samples at a total of 29 sites, including 18 recreation areas and 11 water intake locations, located throughout Norris, Melton Hill, and Watts Bar Reservoirs. The samples were analyzed for radionuclides, metals, and organic compounds which could pose a threat to human health.

  10. Watts111.pdf

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

  11. Process Limits

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

    Process Limits Process Limits Limit Hard Soft core file size (blocks) 0 unlimited data seg size (kbytes) unlimited unlimited scheduling priority 0 0 file size (blocks) unlimited unlimited pending signals 4199424 4199424 max locked memory (kbytes) 32 32 max memory size (kbytes) unlimited unlimited open files 1024 1024 pipe size (512 bytes) 8 8 POSIX message queues (bytes) 819200 819200 real-time priority 0 0 stack size (kbytes) 10240 unlimited cpu time (seconds) unlimited unlimited max user

  12. Instrument uncertainty effect on calculation of absolute humidity using dewpoint, wet-bulb, and relative humidity sensors

    SciTech Connect (OSTI)

    Slayzak, S.J.; Ryan, J.P.

    1998-04-01

    As part of the US Department of Energy`s Advanced Desiccant Technology Program, the National Renewable Energy Laboratory (NREL) is characterizing the state-of-the-art in desiccant dehumidifiers, the key component of desiccant cooling systems. The experimental data will provide industry and end users with independent performance evaluation and help researchers assess the energy savings potential of the technology. Accurate determination of humidity ratio is critical to this work and an understanding of the capabilities of the available instrumentation is central to its proper application. This paper compares the minimum theoretical random error in humidity ratio calculation for three common measurement methods to give a sense of the relative maximum accuracy possible for each method assuming systematic errors can be made negligible. A series of experiments conducted also illustrate the capabilities of relative humidity sensors as compared to dewpoint sensors in measuring the grain depression of desiccant dehumidifiers. These tests support the results of the uncertainty analysis. At generally available instrument accuracies, uncertainty in calculated humidity ratio for dewpoint sensors is determined to be constant at approximately 2%. Wet-bulb sensors range between 2% and 6% above 10 g/kg (4%--15% below), and relative humidity sensors vary between 4% above 90% rh and 15% at 20% rh. Below 20% rh, uncertainty for rh sensors increases dramatically. Highest currently attainable accuracies bring dewpoint instruments down to 1% uncertainty, wet bulb to a range of 1%--3% above 10 g/kg (1.5%--8% below), and rh sensors between 1% and 5%.

  13. Safety Evaluation Report related to the operation of Watts Bar Nuclear Plant, Units 1 and 2 (Docket Nos. 50-390 and 50-391). Supplement No. 12

    SciTech Connect (OSTI)

    Tam, P.S.

    1993-10-01

    Supplement No. 12 to the Safety Evaluation Report for the application filed by the Tennessee Valley Authority for license to operate Watts Bar Nuclear Plant, Units 1 and 2, Docket Nos. 50-390 and 50-391, located in Rhea County, Tennessee, has been prepared by the Office of Nuclear Reactor Regulation of the Nuclear Regulatory Commission. The purpose of this supplement is to update the Safety Evaluation of (1) additional information submitted by the applicant since Supplement No. 11 was issued, and (2) matters that the staff had under review when Supplement No. 11 was issued.

  14. Powering a Home with Just 25 Watts of Solar PV. Super-Efficient Appliances Can Enable Expanded Off-Grid Energy Service Using Small Solar Power Systems

    SciTech Connect (OSTI)

    Phadke, Amol A.; Jacobson, Arne; Park, Won Young; Lee, Ga Rick; Alstone, Peter; Khare, Amit

    2015-04-01

    Highly efficient direct current (DC) appliances have the potential to dramatically increase the affordability of off-grid solar power systems used for rural electrification in developing countries by reducing the size of the systems required. For example, the combined power requirement of a highly efficient color TV, four DC light emitting diode (LED) lamps, a mobile phone charger, and a radio is approximately 18 watts and can be supported by a small solar power system (at 27 watts peak, Wp). Price declines and efficiency advances in LED technology are already enabling rapidly increased use of small off-grid lighting systems in Africa and Asia. Similar progress is also possible for larger household-scale solar home systems that power appliances such as lights, TVs, fans, radios, and mobile phones. When super-efficient appliances are used, the total cost of solar home systems and their associated appliances can be reduced by as much as 50%. The results vary according to the appliances used with the system. These findings have critical relevance for efforts to provide modern energy services to the 1.2 billion people worldwide without access to the electrical grid and one billion more with unreliable access. However, policy and market support are needed to realize rapid adoption of super-efficient appliances.

  15. Comparing Light Bulbs

    Broader source: Energy.gov [DOE]

    In this exercise, students will use a light to demonstrate the difference between being energy-efficient and energy-wasteful, and learn what energy efficiency means.

  16. Fish passage through a simulated horizontal bulb turbine pressure regime: A supplement to "Laboratory Studies of the Effects of Pressure and Dissolved Gas Supersaturation on Turbine-Passed Fish"

    SciTech Connect (OSTI)

    Abernethy, C. S.; Amidan, B. G.; Cada, G. F.

    2003-07-01

    Migratory and resident fish in the Columbia River Basin are exposed to stresses associated with hydroelectric power production, including pressure changes during turbine passage. The responses of fall chinook salmon and bluegill sunfish to rapid pressure change was investigated at the Pacific Northwest National Laboratory. Previous test series evaluated the effects of passage through a vertical Kaplan turbine under the worst case pressure conditions (Abernethy et al. 2001) and under less severe conditions where pressure changes were minimized (Abernethy et al. 2002). For this series of tests, pressure changes were modified to simulate passage through a horizontal bulb turbine, commonly installed at low-head dams. The results were compared to results from previous test series. Tests indicated that for most of the cross-sectional area of a horizontal bulb turbine, pressure changes occurring during turbine passage are not harmful to fall chinook salmon and only minimally harmful to bluegill. However, some areas within a horizontal bulb turbine may have extreme pressure conditions that would be harmful to fish. These scenarios were not tested because they represent a small cross-sectional area of the turbine compared to the centerline pressures scenarios used in these tests.

  17. Limited Test Ban Treaty

    National Nuclear Security Administration (NNSA)

    Detection System (USNDS), which monitors compliance with the international Limited Test Ban Treaty (LTBT). The LTBT, signed by 108 countries, prohibits nuclear testing in the...

  18. Optical limiting materials

    DOE Patents [OSTI]

    McBranch, Duncan W. (Santa Fe, NM); Mattes, Benjamin R. (Santa Fe, NM); Koskelo, Aaron C. (Los Alamos, NM); Heeger, Alan J. (Santa Barbara, CA); Robinson, Jeanne M. (Los Alamos, NM); Smilowitz, Laura B. (Los Alamos, NM); Klimov, Victor I. (Los Alamos, NM); Cha, Myoungsik (Goleta, CA); Sariciftci, N. Serdar (Santa Barbara, CA); Hummelen, Jan C. (Groningen, NL)

    1998-01-01

    Optical limiting materials. Methanofullerenes, fulleroids and/or other fullerenes chemically altered for enhanced solubility, in liquid solution, and in solid blends with transparent glass (SiO.sub.2) gels or polymers, or semiconducting (conjugated) polymers, are shown to be useful as optical limiters (optical surge protectors). The nonlinear absorption is tunable such that the energy transmitted through such blends saturates at high input energy per pulse over a wide range of wavelengths from 400-1100 nm by selecting the host material for its absorption wavelength and ability to transfer the absorbed energy into the optical limiting composition dissolved therein. This phenomenon should be generalizable to other compositions than substituted fullerenes.

  19. TipCard_Front_back_final_rev2.indd

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

    helps you understand your purchase. The label has the lumens - or brightness - of the bulb, the estimated operating cost and life, and the color of the light (from warm/yellow, to white, to cool/blue). Energy-saving bulbs come in a wide range of colors. energysavers.gov/lumens Lumens tell you how bright a bulb is. More lumens mean brighter light. When replacing a 60-watt traditional incandescent bulb, look for a new bulb that gives you about 800 lumens. Choose your next light bulb for

  20. 6

    Energy Savers [EERE]

    helps you understand your purchase. The label has the lumens - or brightness - of the bulb, the estimated operating cost and life, and the color of the light (from warm/yellow, to white, to cool/blue). Energy-saving bulbs come in a wide range of colors. energysavers.gov/lumens Lumens tell you how bright a bulb is. More lumens mean brighter light. When replacing a 60-watt traditional incandescent bulb, look for a new bulb that gives you about 800 lumens. Choose your next light bulb for

  1. Optical limiting materials

    DOE Patents [OSTI]

    McBranch, D.W.; Mattes, B.R.; Koskelo, A.C.; Heeger, A.J.; Robinson, J.M.; Smilowitz, L.B.; Klimov, V.I.; Cha, M.; Sariciftci, N.S.; Hummelen, J.C.

    1998-04-21

    Methanofullerenes, fulleroids and/or other fullerenes chemically altered for enhanced solubility, in liquid solution, and in solid blends with transparent glass (SiO{sub 2}) gels or polymers, or semiconducting (conjugated) polymers, are shown to be useful as optical limiters (optical surge protectors). The nonlinear absorption is tunable such that the energy transmitted through such blends saturates at high input energy per pulse over a wide range of wavelengths from 400--1,100 nm by selecting the host material for its absorption wavelength and ability to transfer the absorbed energy into the optical limiting composition dissolved therein. This phenomenon should be generalizable to other compositions than substituted fullerenes. 5 figs.

  2. Security Clearances; Limitations

    Energy Savers [EERE]

    SEC. 1072. SECURITY CLEARANCES; LIMITATIONS. (a) In General.-Title III of the Intelligence Reform and Terrorism Prevention Act of 2004 (50 U.S.C. 435b) is amended by adding at the end the following new section: "SEC. 3002. SECURITY CLEARANCES; LIMITATIONS. "(a) Definitions.-In this section: "(1) Controlled substance.-The term `controlled substance' has the meaning given that term in section 102 of the Controlled Substances Act (21 U.S.C. 802). "(2) Covered person.-The term

  3. Heat flux limiting sleeves

    DOE Patents [OSTI]

    Harris, William G. (Tampa, FL)

    1985-01-01

    A heat limiting tubular sleeve extending over only a portion of a tube having a generally uniform outside diameter, the sleeve being open on both ends, having one end thereof larger in diameter than the other end thereof and having a wall thickness which decreases in the same direction as the diameter of the sleeve decreases so that the heat transfer through the sleeve and tube is less adjacent the large diameter end of the sleeve than adjacent the other end thereof.

  4. Fault Current Limiters

    Office of Environmental Management (EM)

    Fault Current Limiters Superconducting & Solid-state Power Equipment Office of Electricity Delivery and Energy Reliability www.oe.energy.gov Office of Electricity Delivery and Energy Reliability, OE-1 U.S. Department of Energy - 1000 Independence Avenue, SW - Washington, DC 20585 Plugging America Into the Future of Power What are FCLs? A fault is an unintentional short circuit, or partial short-circuit, in an electric circuit. A variety of factors such as lightning, downed power lines, or

  5. Fault current limiter

    DOE Patents [OSTI]

    Darmann, Francis Anthony

    2013-10-08

    A fault current limiter (FCL) includes a series of high permeability posts for collectively define a core for the FCL. A DC coil, for the purposes of saturating a portion of the high permeability posts, surrounds the complete structure outside of an enclosure in the form of a vessel. The vessel contains a dielectric insulation medium. AC coils, for transporting AC current, are wound on insulating formers and electrically interconnected to each other in a manner such that the senses of the magnetic field produced by each AC coil in the corresponding high permeability core are opposing. There are insulation barriers between phases to improve dielectric withstand properties of the dielectric medium.

  6. (Limiting the greenhouse effect)

    SciTech Connect (OSTI)

    Rayner, S.

    1991-01-07

    Traveler attended the Dahlem Research Conference organized by the Freien Universitat, Berlin. The subject of the conference was Limiting the Greenhouse Effect: Options for Controlling Atmospheric CO{sub 2} Accumulation. Like all Dahlem workshops, this was a meeting of scientific experts, although the disciplines represented were broader than usual, ranging across anthropology, economics, international relations, forestry, engineering, and atmospheric chemistry. Participation by scientists from developing countries was limited. The conference was divided into four multidisciplinary working groups. Traveler acted as moderator for Group 3 which examined the question What knowledge is required to tackle the principal social and institutional barriers to reducing CO{sub 2} emissions'' The working rapporteur was Jesse Ausubel of Rockefeller University. Other working groups examined the economic costs, benefits, and technical feasibility of options to reduce emissions per unit of energy service; the options for reducing energy use per unit of GNP; and the significant of linkage between strategies to reduce CO{sub 2} emissions and other goals. Draft reports of the working groups are appended. Overall, the conference identified a number of important research needs in all four areas. It may prove particularly important in bringing the social and institutional research needs relevant to climate change closer to the forefront of the scientific and policy communities than hitherto.

  7. Luminous Efficacy Standards for General Purpose Lights

    Broader source: Energy.gov [DOE]

    *Efficacy refers to the overall energy efficiency of light and is measured in lumens (measure of light output) per watt (measure of power input). The efficacy of a typical incandescent light bulb...

  8. Components of the NSTX-U | Princeton Plasma Physics Lab

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

    Components of the NSTX-U Current in center stack: 2 million amps, enough to light 2 million 100 watt light bulbs. Publication File: PDF icon NSTX-U_presskit_print_Components

  9. Timminco Limited | Open Energy Information

    Open Energy Info (EERE)

    Limited Jump to: navigation, search Name: Timminco Limited Place: Toronto, Ontario, Canada Zip: M5H 1J9 Product: Canadian manufacturer of magnesium and silicon; operates its...

  10. Shanghai Solar Watt Ltd | Open Energy Information

    Open Energy Info (EERE)

    China Zip: 200040 Sector: Renewable Energy, Solar, Wind energy Product: Providing photovoltaic systems, solar air heating systems, solar water pumping systems, wind energy...

  11. AstroWatt | Open Energy Information

    Open Energy Info (EERE)

    Solar Product: Texas-based venture backed company developing a proprietary solar cell technology. Coordinates: 30.267605, -97.742984 Show Map Loading map......

  12. TerraWatt Power | Open Energy Information

    Open Energy Info (EERE)

    Place: Schenectady, New York Zip: 12305-1036 Product: American manufacturer of micro-inverters, subsidiary of Advanced Energy Conversion. Coordinates: 42.81226, -73.941026...

  13. Watt Does It Cost To Use It?

    K-12 Energy Lesson Plans and Activities Web site (EERE)

    Students learn how electrical usage is counted and priced. They measure and evaluate energy use and cost of representative household and school electrical items.

  14. COMMENTARY:Limits to adaptation

    SciTech Connect (OSTI)

    Preston, Benjamin L

    2013-01-01

    An actor-centered, risk-based approach to defining limits to social adaptation provides a useful analytic framing for identifying and anticipating these limits and informing debates over society s responses to climate change.

  15. PURAC Limited | Open Energy Information

    Open Energy Info (EERE)

    technology and project management company in the environment sector and specialising in water, wastewater and municpal waste treatment. References: PURAC Limited1 This article...

  16. Lysanda Limited | Open Energy Information

    Open Energy Info (EERE)

    CM8 3GA Product: US-based vehicle engineering consultancy with a technology capable of playing a role in vehicle emissions management. References: Lysanda Limited1 This...

  17. Solfex Limited | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name: Solfex Limited Address: Energy Arena Bannister Hall Works Off Shop Lane, Higher Walton Preston, Lancashire PR5 4DZ Place: Preston, United...

  18. FUEL CASK IMPACT LIMITER VULNERABILITIES

    SciTech Connect (OSTI)

    Leduc, D; Jeffery England, J; Roy Rothermel, R

    2009-02-09

    Cylindrical fuel casks often have impact limiters surrounding just the ends of the cask shaft in a typical 'dumbbell' arrangement. The primary purpose of these impact limiters is to absorb energy to reduce loads on the cask structure during impacts associated with a severe accident. Impact limiters are also credited in many packages with protecting closure seals and maintaining lower peak temperatures during fire events. For this credit to be taken in safety analyses, the impact limiter attachment system must be shown to retain the impact limiter following Normal Conditions of Transport (NCT) and Hypothetical Accident Conditions (HAC) impacts. Large casks are often certified by analysis only because of the costs associated with testing. Therefore, some cask impact limiter attachment systems have not been tested in real impacts. A recent structural analysis of the T-3 Spent Fuel Containment Cask found problems with the design of the impact limiter attachment system. Assumptions in the original Safety Analysis for Packaging (SARP) concerning the loading in the attachment bolts were found to be inaccurate in certain drop orientations. This paper documents the lessons learned and their applicability to impact limiter attachment system designs.

  19. Nuclear Structure at the Limits

    SciTech Connect (OSTI)

    Nazarewicz, W.

    1998-01-12

    One of the frontiers of today?s nuclear science is the ?journey to the limits? of atomic charge and nuclear mass, of neutron-to-proton ratio, and of angular momentum. The tour to the limits is not only a quest for new, exciting phenomena, but the new data are expected, as well, to bring qualitatively new information about the fundamental properties of the nucleonic many-body system, the nature of the nuclear interaction, and nucleonic correlations at various energy-distance scales. In this series of lectures, current developments in nuclear structure at the limits are discussed from a theoretical perspective, mainly concentrating on medium-mass and heavy nuclei.

  20. Nuclear Structure at the Limits

    SciTech Connect (OSTI)

    Nazarewicz, Witold

    1997-12-31

    One of the frontiers of today`s nuclear science is the ``journey to the limits``: of atomic charge and nuclear mass, of neutron-to-proton ratio, and of angular momentum. The tour to the limits is not only a quest for new, exciting phenomena but the new data are expected, as well, to bring qualitatively new information about the fundamental properties of the nucleonic many-body system, the nature of the nuclear interaction, and nucleonic correlations at various energy-distance scales. In this talk, current developments in nuclear structure at the limits are discussed from a theoretical perspective.

  1. Dose Limits | Department of Energy

    Office of Environmental Management (EM)

    Limits Dose Limits (Question Posted to ERAD in May 2012) Who do you define as a member of the public for the onsite MEI? This question implies that there may be more than one maximally exposed individual (MEI), one on-site and one off-site, when demonstrating compliance with the Public Dose Limit of DOE Order 458.1. Although all potential MEIs should be considered and documented, as well as the calculated doses and pathways considered, the intent of DOE Order 458.1 is in fact to ultimately

  2. Plaxica Limited | Open Energy Information

    Open Energy Info (EERE)

    Zip: SW7 2AZ Product: UK-based technology company developing a new generation of polymers derived from sustainable resources. References: Plaxica Limited1 This article is a...

  3. Passive fault current limiting device

    DOE Patents [OSTI]

    Evans, D.J.; Cha, Y.S.

    1999-04-06

    A passive current limiting device and isolator is particularly adapted for use at high power levels for limiting excessive currents in a circuit in a fault condition such as an electrical short. The current limiting device comprises a magnetic core wound with two magnetically opposed, parallel connected coils of copper, a high temperature superconductor or other electrically conducting material, and a fault element connected in series with one of the coils. Under normal operating conditions, the magnetic flux density produced by the two coils cancel each other. Under a fault condition, the fault element is triggered to cause an imbalance in the magnetic flux density between the two coils which results in an increase in the impedance in the coils. While the fault element may be a separate current limiter, switch, fuse, bimetal strip or the like, it preferably is a superconductor current limiter conducting one-half of the current load compared to the same limiter wired to carry the total current of the circuit. The major voltage during a fault condition is in the coils wound on the common core in a preferred embodiment. 6 figs.

  4. Passive fault current limiting device

    DOE Patents [OSTI]

    Evans, Daniel J. (Wheeling, IL); Cha, Yung S. (Darien, IL)

    1999-01-01

    A passive current limiting device and isolator is particularly adapted for use at high power levels for limiting excessive currents in a circuit in a fault condition such as an electrical short. The current limiting device comprises a magnetic core wound with two magnetically opposed, parallel connected coils of copper, a high temperature superconductor or other electrically conducting material, and a fault element connected in series with one of the coils. Under normal operating conditions, the magnetic flux density produced by the two coils cancel each other. Under a fault condition, the fault element is triggered to cause an imbalance in the magnetic flux density between the two coils which results in an increase in the impedance in the coils. While the fault element may be a separate current limiter, switch, fuse, bimetal strip or the like, it preferably is a superconductor current limiter conducting one-half of the current load compared to the same limiter wired to carry the total current of the circuit. The major voltage during a fault condition is in the coils wound on the common core in a preferred embodiment.

  5. V Fuels Biodiesel Limited | Open Energy Information

    Open Energy Info (EERE)

    Biodiesel Limited Jump to: navigation, search Name: V-Fuels Biodiesel Limited Place: United Kingdom Product: UK-based biodiesel producers. References: V-Fuels Biodiesel Limited1...

  6. Belize Electricity Limited | Open Energy Information

    Open Energy Info (EERE)

    Belize Electricity Limited Jump to: navigation, search Logo: Belize Electricity Limited Name: Belize Electricity Limited Abbreviation: BEL Address: PO Box 327 Place: Belize City,...

  7. Tritium Detection Methods and Limitations

    Office of Environmental Management (EM)

    Detection Methods and Limitations Tritium Focus Group Meeting, April 2014 Tom Voss, Northern New Mexico DOE-HDBK-1105-2002 RADIOLOGICAL TRAINING FOR TRITIUM FACILITIES U.S. Department of Energy AREA TRNG Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. DOE-HDBK-1105-2002 Radiological Training for Tritium Facilities U.S. Department of Energy, Radiological Control Programs for Special Tritium Compounds, DOE-STD- draft, Washington, D.C.

  8. CALiPER Snapshot Report: Light Bulbs

    SciTech Connect (OSTI)

    2013-10-01

    Snapshot reports use data from DOE's LED Lighting Facts product list to compare the LED performance to standard technologies, and are designed to help lighting retailers, distributors, designers, utilities, energy efficiency program sponsors, and other stakeholders understand the current state of the LED market and its trajectory.

  9. Gujarat Ambuja Cements Limited | Open Energy Information

    Open Energy Info (EERE)

    Limited Jump to: navigation, search Name: Gujarat Ambuja Cements Limited Place: Mumbai, India Zip: 400 021 Sector: Biomass Product: Indian cement company. the company...

  10. Universal Carbon Credits Limited | Open Energy Information

    Open Energy Info (EERE)

    Universal Carbon Credits Limited Jump to: navigation, search Name: Universal Carbon Credits Limited Place: London, England, United Kingdom Zip: EC3A6DF Sector: Carbon Product:...

  11. Carbon Trust Enterprises Limited | Open Energy Information

    Open Energy Info (EERE)

    Enterprises Limited Jump to: navigation, search Name: Carbon Trust Enterprises Limited Place: London, United Kingdom Zip: WC2A 2AZ Sector: Carbon Product: Carbon Trust Enterprises...

  12. Carbon Limiting Technologies | Open Energy Information

    Open Energy Info (EERE)

    Limiting Technologies Jump to: navigation, search Name: Carbon Limiting Technologies Place: London, Greater London, United Kingdom Zip: N1 8HA Sector: Carbon Product: UK-based...

  13. Harvard Dedicated Energy Limited | Open Energy Information

    Open Energy Info (EERE)

    Harvard Dedicated Energy Limited Jump to: navigation, search Name: Harvard Dedicated Energy Limited Place: Massachusetts Phone Number: (617) 495-5560 Website: www.energyandfaciliti...

  14. Rix Biodiesel Limited | Open Energy Information

    Open Energy Info (EERE)

    Rix Biodiesel Limited Jump to: navigation, search Name: Rix Biodiesel Limited Place: Hull, United Kingdom Zip: HU8 7JR Product: Manufacture, blends and resells biodiesel....

  15. Central Electronics Limited CEL | Open Energy Information

    Open Energy Info (EERE)

    Electronics Limited CEL Jump to: navigation, search Name: Central Electronics Limited (CEL) Place: Sahibabad, Uttar Pradesh, India Zip: 201010 Sector: Solar Product: String...

  16. SRSL Ethanol Limited | Open Energy Information

    Open Energy Info (EERE)

    SRSL Ethanol Limited Jump to: navigation, search Name: SRSL Ethanol Limited Place: Mumbai, Maharashtra, India Product: Mumbai-based ethanol subsidiary of Shree Renuka Sugars...

  17. Catamount Energy Limited | Open Energy Information

    Open Energy Info (EERE)

    Limited Jump to: navigation, search Name: Catamount Energy Limited Place: United Kingdom Sector: Wind energy Product: Wind power project developer working on projects in Scotland....

  18. China Innovation Investment Limited | Open Energy Information

    Open Energy Info (EERE)

    Innovation Investment Limited Jump to: navigation, search Name: China Innovation Investment Limited Place: Hong Kong Sector: Solar Product: Hong Kong-listed alternative energy...

  19. United Biofuels Private Limited | Open Energy Information

    Open Energy Info (EERE)

    United Biofuels Private Limited Jump to: navigation, search Name: United Biofuels Private Limited Place: Tamil Nadu, India Sector: Biomass Product: India-based owner and operator...

  20. BFC Solutions Limited | Open Energy Information

    Open Energy Info (EERE)

    BFC Solutions Limited Jump to: navigation, search Name: BFC Solutions Limited Place: Taunton, England, United Kingdom Zip: TA1 PEJ Sector: Carbon Product: Somerset-based...

  1. Cape Systems Limited | Open Energy Information

    Open Energy Info (EERE)

    Limited Jump to: navigation, search Name: Cape Systems Limited Place: Rock Sound, Bahamas Sector: Services Product: Offers installation and site surveying services for clean...

  2. United Group Limited | Open Energy Information

    Open Energy Info (EERE)

    Limited Jump to: navigation, search Name: United Group Limited Place: Perth, Western Australia, Australia Zip: 6001 Product: The United Group Resources (UGL) division is an EPC and...

  3. Greenergy Biofuels Limited | Open Energy Information

    Open Energy Info (EERE)

    Biofuels Limited Jump to: navigation, search Name: Greenergy Biofuels Limited Place: London, Greater London, United Kingdom Zip: WC1V 7BD Sector: Biofuels Product: Imports, blends...

  4. Mauktika Energy Limited MEL | Open Energy Information

    Open Energy Info (EERE)

    Mauktika Energy Limited MEL Jump to: navigation, search Name: Mauktika Energy Limited (MEL) Place: Hyderabad, Andhra Pradesh, India Zip: 500033 Sector: Renewable Energy Product:...

  5. Renewable Fuels Limited RFL | Open Energy Information

    Open Energy Info (EERE)

    Limited RFL Jump to: navigation, search Name: Renewable Fuels Limited (RFL) Place: York, United Kingdom Zip: YO19 6ET Sector: Biomass Product: Supplies various biomass fuels and...

  6. Tidal Energy Limited | Open Energy Information

    Open Energy Info (EERE)

    Limited Jump to: navigation, search Name: Tidal Energy Limited (TEL) Place: Cardiff, Wales, United Kingdom Zip: CF23 8RS Product: Tidal stream device developer. Coordinates:...

  7. Transmission Capital Limited | Open Energy Information

    Open Energy Info (EERE)

    Transmission Capital Limited Jump to: navigation, search Name: Transmission Capital Limited Place: London, United Kingdom Zip: EC2V 7HR Sector: Renewable Energy, Services Product:...

  8. Impact Capital Partners Limited | Open Energy Information

    Open Energy Info (EERE)

    Capital Partners Limited Jump to: navigation, search Name: Impact Capital Partners Limited Place: Los Angeles, California Zip: CA 90067-1509 Product: Los Angeles-based, investment...

  9. WaikatoLink Limited | Open Energy Information

    Open Energy Info (EERE)

    Limited Jump to: navigation, search Name: WaikatoLink Limited Place: New Zealand Sector: Services Product: General Financial & Legal Services ( Individual Angel network )...

  10. Nufcor International Limited Nufcor | Open Energy Information

    Open Energy Info (EERE)

    Limited (Nufcor) Place: United Kingdom Sector: Services Product: UK-based uranium marketing services company. References: Nufcor International Limited (Nufcor)1 This article...

  11. Clipper Windpower Europe Limited | Open Energy Information

    Open Energy Info (EERE)

    Clipper Windpower Europe Limited Jump to: navigation, search Name: Clipper Windpower Europe Limited Place: London, Greater London, United Kingdom Zip: SE1 7TJ Sector: Wind energy...

  12. Power Projects Limited | Open Energy Information

    Open Energy Info (EERE)

    Limited Jump to: navigation, search Name: Power Projects Limited Address: PO Box 25456 Panama Street Place: Wellington Zip: 6146 Region: New Zealand Sector: Marine and Hydrokinetic...

  13. Voith Hydro Wavegen Limited | Open Energy Information

    Open Energy Info (EERE)

    Voith Hydro Wavegen Limited Jump to: navigation, search Name: Voith Hydro Wavegen Limited Region: United Kingdom Sector: Marine and Hydrokinetic Website: www.wavegen.co.uk This...

  14. Limited-life cartridge primers

    DOE Patents [OSTI]

    Makowiecki, Daniel M. (Livermore, CA); Rosen, Robert S. (San Ramon, CA)

    1998-01-01

    A cartridge primer which utilizes an explosive that can be designed to become inactive in a predetermined period of time: a limited-life primer. The explosive or combustible material of the primer is an inorganic reactive multilayer (RML). The reaction products of the RML are sub-micron grains of non-corrosive inorganic compounds that would have no harmful effects on firearms or cartridge cases. Unlike use of primers containing lead components, primers utilizing RML's would not present a hazard to the environment. The sensitivity of an RML is determined by the physical structure and the stored interfacial energy. The sensitivity lowers with time due to a decrease in interfacial energy resulting from interdiffusion of the elemental layers. Time-dependent interdiffusion is predictable, thereby enabling the functional lifetime of an RML primer to be predetermined by the initial thickness and materials selection of the reacting layers.

  15. Limited-life cartridge primers

    DOE Patents [OSTI]

    Makowiecki, Daniel M.; Rosen, Robert S.

    2005-04-19

    A cartridge primer which utilizes an explosive that can be designed to become inactive in a predetermined period of time: a limited-life primer. The explosive or combustible material of the primer is an inorganic reactive multilayer (RML). The reaction products of the RML are sub-micron grains of non-corrosive inorganic compounds that would have no harmful effects on firearms or cartridge cases. Unlike use of primers containing lead components, primers utilizing RML's would not present a hazard to the environment. The sensitivity of an RML is determined by the physical structure and the stored interfacial energy. The sensitivity lowers with time due to a decrease in interfacial energy resulting from interdiffusion of the elemental layers. Time-dependent interdiffusion is predictable, thereby enabling the functional lifetime of an RML primer to be predetermined by the initial thickness and materials selection of the reacting layers.

  16. Limited-life cartridge primers

    DOE Patents [OSTI]

    Makowiecki, D.M.; Rosen, R.S.

    1998-06-30

    A cartridge primer is described which utilizes an explosive that can be designed to become inactive in a predetermined period of time: a limited-life primer. The explosive or combustible material of the primer is an inorganic reactive multilayer (RML). The reaction products of the RML are sub-micron grains of non-corrosive inorganic compounds that would have no harmful effects on firearms or cartridge cases. Unlike use of primers containing lead components, primers utilizing RML`s would not present a hazard to the environment. The sensitivity of an RML is determined by the physical structure and the stored interfacial energy. The sensitivity lowers with time due to a decrease in interfacial energy resulting from interdiffusion of the elemental layers. Time-dependent interdiffusion is predictable, thereby enabling the functional lifetime of an RML primer to be predetermined by the initial thickness and materials selection of the reacting layers. 10 figs.

  17. Shear wall ultimate drift limits

    SciTech Connect (OSTI)

    Duffey, T.A.; Goldman, A.; Farrar, C.R.

    1994-04-01

    Drift limits for reinforced-concrete shear walls are investigated by reviewing the open literature for appropriate experimental data. Drift values at ultimate are determined for walls with aspect ratios ranging up to a maximum of 3.53 and undergoing different types of lateral loading (cyclic static, monotonic static, and dynamic). Based on the geometry of actual nuclear power plant structures exclusive of containments and concerns regarding their response during seismic (i.e.,cyclic) loading, data are obtained from pertinent references for which the wall aspect ratio is less than or equal to approximately 1, and for which testing is cyclic in nature (typically displacement controlled). In particular, lateral deflections at ultimate load, and at points in the softening region beyond ultimate for which the load has dropped to 90, 80, 70, 60, and 50 percent of its ultimate value, are obtained and converted to drift information. The statistical nature of the data is also investigated. These data are shown to be lognormally distributed, and an analysis of variance is performed. The use of statistics to estimate Probability of Failure for a shear wall structure is illustrated.

  18. GenDrive Limited | Open Energy Information

    Open Energy Info (EERE)

    GenDrive Limited Jump to: navigation, search Name: GenDrive Limited Place: Cambridge, United Kingdom Zip: CB23 3GY Sector: Renewable Energy, Solar, Wind energy Product: Developing...

  19. Mistral Invest Limited | Open Energy Information

    Open Energy Info (EERE)

    Mistral Invest Limited Jump to: navigation, search Name: Mistral Invest Limited Place: London, United Kingdom Zip: W1U 7DW Sector: Wind energy Product: Private Equity Fund aiming...

  20. Biodiesel Energy Trading Limited | Open Energy Information

    Open Energy Info (EERE)

    Limited Jump to: navigation, search Name: Biodiesel Energy Trading Limited Place: London, United Kingdom Zip: W1J 8DY Product: London-based company focused on trading of biodiesel....

  1. Graduate Program Time Limits and Work Schedules

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

    Time Limits and Work Schedules Graduate Program Time Limits and Work Schedules Point your career towards Los Alamos Lab: work with the best minds on the planet in an inclusive...

  2. Undergraduate Program Time Limits and Work Schedules

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

    Time Limits and Work Schedules Undergraduate Program Time Limits and Work Schedules Point your career towards Los Alamos Lab: work with the best minds on the planet in an inclusive...

  3. IT Power Limited | Open Energy Information

    Open Energy Info (EERE)

    IT Power Limited Jump to: navigation, search Name: IT Power Limited Place: Basingstoke, England, United Kingdom Zip: RG24 8AG Sector: Renewable Energy Product: IT Power is a...

  4. Lead Hero Limited | Open Energy Information

    Open Energy Info (EERE)

    Hero Limited Jump to: navigation, search Name: Lead Hero Limited Place: China Product: China-based company that holds a 100% interest in XiAn Lv Jing and a 15.05% interest in...

  5. EU Energy Wind Limited | Open Energy Information

    Open Energy Info (EERE)

    Wind Limited Jump to: navigation, search Name: EU Energy (Wind) Limited Place: Central Milton Keynes, United Kingdom Zip: K9 1LH Sector: Wind energy Product: The company will be...

  6. Zebec Biogas Limited | Open Energy Information

    Open Energy Info (EERE)

    Zebec Biogas Limited Jump to: navigation, search Name: Zebec Biogas Limited Place: Glasgow, Scotland, United Kingdom Zip: G12 9JD Product: Sotland-based biogas company. The firm is...

  7. Exorka International Limited | Open Energy Information

    Open Energy Info (EERE)

    Exorka International Limited is a specialist developer of low-temperature geothermal electricity generation, incorporated in England. References: Exorka International...

  8. Undergraduate Program Time Limits and Work Schedules

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

    Time Limits and Work Schedules Undergraduate Program Time Limits and Work Schedules Point your career towards Los Alamos Lab: work with the best minds on the planet in an inclusive environment that is rich in intellectual vitality and opportunities for growth. Contact Student Programs (505) 665-8899 Email Time limits The length of participation in the undergraduate program is limited to a maximum of six years for students pursuing a bachelor's degree and three years for students pursuing an

  9. Limited English Proficiency | Department of Energy

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

    Limited English Proficiency Limited English Proficiency On August 11, 2000, President Clinton signed Executive Order 13166, "Improving Access to Services for Persons with Limited English Proficiency." The Executive Order requires federal agencies, including the Department of Energy, to examine the programs and services they provide, to determine whether there is a need for language assistance for persons with Limited English proficiency (LEP) related to their programs and services, and

  10. Solid-State Lighting-L Prize Competition | Department of Energy

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

    L Prize Competition Solid-State Lighting-L Prize Competition Presenter: Marc Ledbetter, Pacific Northwest National Laboratory The L Prize competition spurs the development of new, ultra-efficient lighting products to replace common light sources, including the 60-watt (W) incandescent bulb and the PAR38 reflector bulb. The goal is to realize significant lighting energy savings through widespread product adoption. Winning manufacturers receive significant recognition, and retailers, energy

  11. Primordial magnetic field limits from cosmological data

    SciTech Connect (OSTI)

    Kahniashvili, Tina [McWilliams Center for Cosmology and Department of Physics, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213 (United States); Department of Physics, Laurentian University, Ramsey Lake Road, Sudbury, Ontario P3E 2C (Canada); Abastumani Astrophysical Observatory, Ilia State University, 2A Kazbegi Ave, Tbilisi, GE-0160 (Georgia); Tevzadze, Alexander G. [Abastumani Astrophysical Observatory, Ilia State University, 2A Kazbegi Ave, Tbilisi, GE-0160 (Georgia); Faculty of Exact and Natural Sciences, Tbilisi State University, 1 Chavchavadze Avenue, Tbilisi, GE-0128 (Georgia); Sethi, Shiv K. [McWilliams Center for Cosmology and Department of Physics, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213 (United States); Raman Research Institute, Sadashivanagar, Bangalore 560080 (India); Pandey, Kanhaiya [Raman Research Institute, Sadashivanagar, Bangalore 560080 (India); Ratra, Bharat [Department of Physics, Kansas State University, 116 Cardwell Hall, Manhattan, Kansas 66506 (United States)

    2010-10-15

    We study limits on a primordial magnetic field arising from cosmological data, including that from big bang nucleosynthesis, cosmic microwave background polarization plane Faraday rotation limits, and large-scale structure formation. We show that the physically relevant quantity is the value of the effective magnetic field, and limits on it are independent of how the magnetic field was generated.

  12. High temperature superconducting fault current limiter

    DOE Patents [OSTI]

    Hull, John R.

    1997-01-01

    A fault current limiter (10) for an electrical circuit (14). The fault current limiter (10) includes a high temperature superconductor (12) in the electrical circuit (14). The high temperature superconductor (12) is cooled below its critical temperature to maintain the superconducting electrical properties during operation as the fault current limiter (10).

  13. High temperature superconducting fault current limiter

    DOE Patents [OSTI]

    Hull, J.R.

    1997-02-04

    A fault current limiter for an electrical circuit is disclosed. The fault current limiter includes a high temperature superconductor in the electrical circuit. The high temperature superconductor is cooled below its critical temperature to maintain the superconducting electrical properties during operation as the fault current limiter. 15 figs.

  14. Maharashtra State Power Generation Company Limited MAHAGENCO...

    Open Energy Info (EERE)

    search Name: Maharashtra State Power Generation Company Limited (MAHAGENCO) Place: Mumbai, Maharashtra, India Zip: 400051 Product: Power generating firm planning to set up a...

  15. Wedotebary Nigeria Limited | Open Energy Information

    Open Energy Info (EERE)

    Name: Wedotebary Nigeria Limited Place: Bukuru, Nigeria Product: Nigeria-based manufacturing conglomerate. Coordinates: 9.79017, 8.85481 Show Map Loading map......

  16. EVO Electric Limited | Open Energy Information

    Open Energy Info (EERE)

    Greater London, United Kingdom Zip: GU21 5JY Product: EVO Electric Limited develops electrical motors and generators for use in gensets, powertrains, and traction motors in...

  17. Amperex Technology Limited ATL | Open Energy Information

    Open Energy Info (EERE)

    Technology Limited (ATL) Place: N.T., Hong Kong Product: Designer and manufacturer of Lithium Ion Polymer (LIP) battery cells and batteries for OEM customers making cell phones,...

  18. CarbonPlan Limited | Open Energy Information

    Open Energy Info (EERE)

    as a consultant advising on renewable energy technologies, energy efficiency, & corporate social responsibility. References: CarbonPlan Limited1 This article is a stub. You can...

  19. Colony Mills Limited | Open Energy Information

    Open Energy Info (EERE)

    Place: Lahore, Pakistan Sector: Solar Product: Yarn manufacturer, plans to set up solar thermal plant. References: Colony Mills Limited1 This article is a stub. You can help...

  20. Graduate Program Time Limits and Work Schedules

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

    Time Limits and Work Schedules Graduate Program Time Limits and Work Schedules Point your career towards Los Alamos Lab: work with the best minds on the planet in an inclusive environment that is rich in intellectual vitality and opportunities for growth. Contact Student Programs (505) 665-0987 Email Time Limits The length of participation in the graduate program is limited as follows: With a bachelor's pursuing a master's degree: 4 years With a bachelor's pursuing a PhD: 7 years With a master's

  1. 12 Voltz Limited | Open Energy Information

    Open Energy Info (EERE)

    Limited Place: Cumbria, United Kingdom Zip: LA8 9NH Sector: Renewable Energy, Solar, Wind energy Product: Selling and delivering broad range of advanced energy generating...

  2. Caldyne Automatics Limited | Open Energy Information

    Open Energy Info (EERE)

    storage product manufacturer; also makes lighting systems based on solar, wind and solar wind hybrid systems. References: Caldyne Automatics Limited1 This article is a stub....

  3. Power Paper Limited | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name: Power Paper Limited Place: Kiryat Arye, Petah Tikva, Israel Zip: 49130 Product: Power Paper is a developer of next-generation, printable...

  4. Hydrogenation of Dislocation-Limited Heteroepitaxial Silicon...

    Office of Scientific and Technical Information (OSTI)

    Hydrogenation of Dislocation- Limited Heteroepitaxial Silicon Solar Cells Preprint Michael L. Bolen, Sachit Grover, Charles W. Teplin, Howard M. Branz, and Paul Stradins National...

  5. Hydrogenation of Dislocation-Limited Heteroepitaxial Silicon...

    Office of Scientific and Technical Information (OSTI)

    Hydrogenation of Dislocation-Limited Heteroepitaxial Silicon Solar Cells: Preprint Bolen, M. L.; Grover, S.; Teplin, C. W.; Bobela, D.; Branz, H. M.; Stradins, P. 08 HYDROGEN; 14...

  6. Hebei Hydroelectric Company Limited | Open Energy Information

    Open Energy Info (EERE)

    Place: Shijiazhuang, Hebei Province, China Zip: 50011 Sector: Hydro Product: China-based small hydro project developer. References: Hebei Hydroelectric Company Limited1 This...

  7. Royal Energy Limited REL | Open Energy Information

    Open Energy Info (EERE)

    (REL) Place: Mumbai, Maharashtra, India Zip: 400 016 Product: Mumbai-based ethanol and biodiesel producer. References: Royal Energy Limited (REL)1 This article is a stub. You...

  8. Acquasol Infrastructure Limited | Open Energy Information

    Open Energy Info (EERE)

    to: navigation, search Name: Acquasol Infrastructure Limited Place: Adelaide, South Australia, Australia Zip: 5000 Sector: Solar Product: Adelaide based solar thermal project and...

  9. Carnegie Wave Energy Limited | Open Energy Information

    Open Energy Info (EERE)

    Limited Address: 1 124 Stirling Highway Place: North Fremantle Zip: 6159 Region: Australia Sector: Marine and Hydrokinetic Year Founded: 1993 Website: www.carnegiewave.com...

  10. Bharat Renewable Energy Limited | Open Energy Information

    Open Energy Info (EERE)

    Energy Limited Place: Lucknow, Uttar Pradesh, India Product: Uttar Pradesh-based joint venture company for the production, procurement, cultivation and plantation of crops...

  11. Local Generation Limited | Open Energy Information

    Open Energy Info (EERE)

    United Kingdom Sector: Biomass Product: UK-based biomass firm developing anaerobic digestion plants. References: Local Generation Limited1 This article is a stub. You can help...

  12. Interim Guidance Regarding Limitations on CERCLA Liability |...

    Open Energy Info (EERE)

    search OpenEI Reference LibraryAdd to library PermittingRegulatory Guidance - Inner-Office Memorandum: Interim Guidance Regarding Limitations on CERCLA LiabilityPermitting...

  13. Cumbria Wind Farms Limited | Open Energy Information

    Open Energy Info (EERE)

    United Kingdom Zip: SY16 2LW Sector: Services Product: Provides operational and maintenance services in Cumbria, Cornwall and Wales. References: Cumbria Wind Farms Limited1...

  14. Proactive Energy Limited | Open Energy Information

    Open Energy Info (EERE)

    Energy Product: Scotland-based renewable energy company that is developing a 5MW biogas plant in South Lanarkshire. References: Proactive Energy Limited1 This article is a...

  15. GP Batteries International Limited | Open Energy Information

    Open Energy Info (EERE)

    International Limited is principally engaged in the development, manufacture and marketing of batteries and battery-related products. References: GP Batteries International...

  16. Green Heat Solutions Limited | Open Energy Information

    Open Energy Info (EERE)

    to: navigation, search Name: Green Heat Solutions Limited Region: Scotland Sector: Marine and Hydrokinetic Website: http: This company is listed in the Marine and Hydrokinetic...

  17. Vihaan Networks Limited VNL | Open Energy Information

    Open Energy Info (EERE)

    to: navigation, search Name: Vihaan Networks Limited (VNL) Place: Gurgaon, Haryana, India Zip: 122015 Sector: Solar Product: Developer of solar-powered GSM system for rural...

  18. WATT Production of Solar Systems | Open Energy Information

    Open Energy Info (EERE)

    Place: Chorzow, Poland Product: Established in 1998, the company produces sun collectors for domestic, small scale, use. Coordinates: 50.26386, 18.936605 Show Map...

  19. Rocky Mountain Power- WattSmart Residential Efficiency Program

    Broader source: Energy.gov [DOE]

    Rocky Mountain Power offers the Home Energy Savings Program for their residential Wyoming customers to improve the energy efficiency of their homes. Full details are available on the program website. 

  20. Sulphur Springs Valley EC- SunWatts Loan Program

    Broader source: Energy.gov [DOE]

    Sulphur Springs Valley Electric Cooperative (SSVEC) has a loan program that allows its members to finance a portion of a photovoltaic (PV) or small wind system. Loans are available in an amount of ...

  1. Self-triggering superconducting fault current limiter

    DOE Patents [OSTI]

    Yuan, Xing (Albany, NY); Tekletsadik, Kasegn (Rexford, NY)

    2008-10-21

    A modular and scaleable Matrix Fault Current Limiter (MFCL) that functions as a "variable impedance" device in an electric power network, using components made of superconducting and non-superconducting electrically conductive materials. The matrix fault current limiter comprises a fault current limiter module that includes a superconductor which is electrically coupled in parallel with a trigger coil, wherein the trigger coil is magnetically coupled to the superconductor. The current surge doing a fault within the electrical power network will cause the superconductor to transition to its resistive state and also generate a uniform magnetic field in the trigger coil and simultaneously limit the voltage developed across the superconductor. This results in fast and uniform quenching of the superconductors, significantly reduces the burnout risk associated with non-uniformity often existing within the volume of superconductor materials. The fault current limiter modules may be electrically coupled together to form various "n" (rows).times."m" (columns) matrix configurations.

  2. Adiabatic limits on Riemannian Heisenberg manifolds

    SciTech Connect (OSTI)

    Yakovlev, A A

    2008-02-28

    An asymptotic formula is obtained for the distribution function of the spectrum of the Laplace operator, in the adiabatic limit for the foliation defined by the orbits of an invariant flow on a compact Riemannian Heisenberg manifold. Bibliography: 21 titles.

  3. A2Wind Limited | Open Energy Information

    Open Energy Info (EERE)

    Startup with strong capability in carbon fibre design targeting the wind turbine blade space. References: A2Wind Limited1 This article is a stub. You can help OpenEI by...

  4. Eclectic Energy Limited | Open Energy Information

    Open Energy Info (EERE)

    Energy Limited Place: Nottinghamshire, United Kingdom Zip: NG21 9PR Sector: Wind energy Product: Design, manufacture D400, StealthGen micro wind, DuoGen wind and water...

  5. Greenrock Energy Services Limited | Open Energy Information

    Open Energy Info (EERE)

    Kingdom Zip: EH2 2JG Product: Scotland-based company installing ground source heat pump systems. References: Greenrock Energy Services Limited1 This article is a stub. You...

  6. EarthEnergy Limited | Open Energy Information

    Open Energy Info (EERE)

    Cornwall, United Kingdom Product: EarthEnergy Systems specialises in ground source heat pump systems. References: EarthEnergy Limited1 This article is a stub. You can help OpenEI...

  7. Principle Energy Limited | Open Energy Information

    Open Energy Info (EERE)

    Principle Energy Limited Place: Isle of Man, United Kingdom Zip: 1M1 1LB Sector: Renewable Energy Product: A UK-based renewable energy company focusing on bioethanol projects in...

  8. Crionaig Power Limited | Open Energy Information

    Open Energy Info (EERE)

    government approval for a 140MW, 39-turbine wind farm at Eisgein on the Isle of Lewis. References: Crionaig Power Limited1 This article is a stub. You can help OpenEI by...

  9. Defining engine efficiency limits | Department of Energy

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

    engine efficiency limits Defining engine efficiency limits Investigates the potential to reduce engine efficiency losses and how this impacts the entire system in terms of a direct increase in work output or a change in the loss mechanism. PDF icon deer11_edwards.pdf More Documents & Publications High Efficiency Engine Systems Development and Evaluation Identification and Evaluation of Near-term Opportunities for Efficiency Improvement High Efficiency Engine Systems Development and

  10. A brightness exceeding simulated Langmuir limit

    SciTech Connect (OSTI)

    Nakasuji, Mamoru

    2013-08-15

    When an excitation of the first lens determines a beam is parallel beam, a brightness that is 100 times higher than Langmuir limit is measured experimentally, where Langmuir limits are estimated using a simulated axial cathode current density which is simulated based on a measured emission current. The measured brightness is comparable to Langmuir limit, when the lens excitation is such that an image position is slightly shorter than a lens position. Previously measured values of brightness for cathode apical radii of curvature 20, 60, 120, 240, and 480 ?m were 8.7, 5.3, 3.3, 2.4, and 3.9 times higher than their corresponding Langmuir limits, respectively, in this experiment, the lens excitation was such that the lens and the image positions were 180 mm and 400 mm, respectively. From these measured brightness for three different lens excitation conditions, it is concluded that the brightness depends on the first lens excitation. For the electron gun operated in a space charge limited condition, some of the electrons emitted from the cathode are returned to the cathode without having crossed a virtual cathode. Therefore, method that assumes a Langmuir limit defining method using a Maxwellian distribution of electron velocities may need to be revised. For the condition in which the values of the exceeding the Langmuir limit are measured, the simulated trajectories of electrons that are emitted from the cathode do not cross the optical axis at the crossover, thus the law of sines may not be valid for high brightness electron beam systems.

  11. Defining coiled tubing limits -- A new approach

    SciTech Connect (OSTI)

    Newman, K.R.; Sathuvalli, U.B.; Stone, L.R.; Wolhart, S.

    1996-12-31

    The burst, collapse and axial load operating limits for Coiled Tubing (CT) are currently established using the Von Mises incipient yield criterion. This criterion has historically been used to calculate the limits for oil country tubular goods (OCTG). The limits according to this criterion are based on the point at which the pipe material reaches a load state in which it begins to yield. Because of the bending that occurs when the CT is spooled on and off the reel, and when it is bent over the guide arch, the CT is already far beyond the yield point before it enters a well. Thus, this criterion does not really apply to CT. This paper describes a research project currently in progress. The purpose of this project is to define a new set of CT limits based on criteria other than incipient yield. This new approach to setting CT operating limits takes into account the internal residual stresses in the CT which are a consequence of repeated bending cycles and the accompanying change in material properties.

  12. Representation of Limited Rights Data and Restricted Computer...

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

    Representation of Limited Rights Data and Restricted Computer Software Representation of Limited Rights Data and Restricted Computer Software PDF icon Representation of Limited...

  13. PP-206 Frontera Generation Limited Partnership | Department of...

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

    PP-206 Frontera Generation Limited Partnership PP-206 Frontera Generation Limited Partnership Presidential permit authorizing Frontera Generation Limited Partnership to construct,...

  14. Multiple soft limits of cosmological correlation functions

    SciTech Connect (OSTI)

    Joyce, Austin; Khoury, Justin; Simonovi?, Marko E-mail: jkhoury@sas.upenn.edu

    2015-01-01

    We derive novel identities satisfied by inflationary correlation functions in the limit where two external momenta are taken to be small. We derive these statements in two ways: using background-wave arguments and as Ward identities following from the fixed-time path integral. Interestingly, these identities allow us to constrain some of the O(q{sup 2}) components of the soft limit, in contrast to their single-soft analogues. We provide several nontrivial checks of our identities both in the context of resonant non-Gaussianities and in small sound speed models. Additionally, we extend the relation at lowest order in external momenta to arbitrarily many soft legs, and comment on the many-soft extension at higher orders in the soft momentum. Finally, we consider how higher soft limits lead to identities satisfied by correlation functions in large-scale structure.

  15. ON COMPUTING UPPER LIMITS TO SOURCE INTENSITIES

    SciTech Connect (OSTI)

    Kashyap, Vinay L.; Siemiginowska, Aneta [Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138 (United States); Van Dyk, David A.; Xu Jin [Department of Statistics, University of California, Irvine, CA 92697-1250 (United States); Connors, Alanna [Eureka Scientific, 2452 Delmer Street, Suite 100, Oakland, CA 94602-3017 (United States); Freeman, Peter E. [Department of Statistics, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213 (United States); Zezas, Andreas, E-mail: vkashyap@cfa.harvard.ed, E-mail: asiemiginowska@cfa.harvard.ed, E-mail: dvd@ics.uci.ed, E-mail: jinx@ics.uci.ed, E-mail: aconnors@eurekabayes.co, E-mail: pfreeman@cmu.ed, E-mail: azezas@cfa.harvard.ed [Physics Department, University of Crete, P.O. Box 2208, GR-710 03, Heraklion, Crete (Greece)

    2010-08-10

    A common problem in astrophysics is determining how bright a source could be and still not be detected in an observation. Despite the simplicity with which the problem can be stated, the solution involves complicated statistical issues that require careful analysis. In contrast to the more familiar confidence bound, this concept has never been formally analyzed, leading to a great variety of often ad hoc solutions. Here we formulate and describe the problem in a self-consistent manner. Detection significance is usually defined by the acceptable proportion of false positives (background fluctuations that are claimed as detections, or Type I error), and we invoke the complementary concept of false negatives (real sources that go undetected, or Type II error), based on the statistical power of a test, to compute an upper limit to the detectable source intensity. To determine the minimum intensity that a source must have for it to be detected, we first define a detection threshold and then compute the probabilities of detecting sources of various intensities at the given threshold. The intensity that corresponds to the specified Type II error probability defines that minimum intensity and is identified as the upper limit. Thus, an upper limit is a characteristic of the detection procedure rather than the strength of any particular source. It should not be confused with confidence intervals or other estimates of source intensity. This is particularly important given the large number of catalogs that are being generated from increasingly sensitive surveys. We discuss, with examples, the differences between these upper limits and confidence bounds. Both measures are useful quantities that should be reported in order to extract the most science from catalogs, though they answer different statistical questions: an upper bound describes an inference range on the source intensity, while an upper limit calibrates the detection process. We provide a recipe for computing upper limits that applies to all detection algorithms.

  16. Limited Conditions of Operations Tracking Program

    Energy Science and Technology Software Center (OSTI)

    1999-12-17

    The Lco tracking program is a computer based solution for tracking time limited action items for Limited Conditions of Operation (LCO) for nuclear and industrial processes. This use is not limited to any process except those not requiring specific action steps and times. The visual and audible assistance the LCO Tracking Program provides significantly reduces the chance of missing crucial actions required for safe operation of any facility in time of limited operations. The LCOmore » Tracking Program maintains all applicable action steps and times for each limited condition for the facility in its data base. The LCO Tracking Program is used to enter that condition by number, and the data base provides the applicble action steps and starts tracking their times based on the time the LCO was entered. The LCO display graphically displays, by colored bar charts, the time expired/time remaining of each specific action item. At 60% time expired, the bar chart turns yellow to caution personnel and then turns red at 90% time expired. Then an audible alarm is sounded at 95% as a warning, to finish or accomplish the required actions to satisfy the requirements. These warning and alarm limits are modifiable by the user and can be set at different values for each action. The display file is dynamic in function, checking every minute, and responds in real time to changes to the LCO Tracking Form file, providing the visual and audible warnings as to the status of the action steps chosen for display. The LCO Tracking Program efficiently tracks action times in minutes or days, up to 2 years. All current LCO''s are easily documentated using the LCO Tracking Form file with ease of printing and disposition. The Lco Tracking Program is designed as a user friendly program with navigational buttons to simplify use.« less

  17. Antenna factorization in strongly ordered limits

    SciTech Connect (OSTI)

    Kosower, David A.

    2005-02-15

    When energies or angles of gluons emitted in a gauge-theory process are small and strongly ordered, the emission factorizes in a simple way to all orders in perturbation theory. I show how to unify the various strongly ordered soft, mixed soft-collinear, and collinear limits using antenna factorization amplitudes, which are generalizations of the Catani-Seymour dipole factorization function.

  18. Flexible moldable conductive current-limiting materials

    DOE Patents [OSTI]

    Shea, John Joseph (Pittsburgh, PA); Djordjevic, Miomir B. (Milwaukee, WI); Hanna, William Kingston (Pittsburgh, PA)

    2002-01-01

    A current limiting PTC device (10) has two electrodes (14) with a thin film of electric conducting polymer material (20) disposed between the electrodes, the polymer material (20) having superior flexibility and short circuit performance, where the polymer material contains short chain aliphatic diepoxide, conductive filler particles, curing agent, and, preferably, a minor amount of bisphenol A epoxy resin.

  19. Approaching the Shockley-Queisser limit: General assessment of the main limiting mechanisms in photovoltaic cells

    SciTech Connect (OSTI)

    Vossier, Alexis Gualdi, Federico; Dollet, Alain; Ares, Richard; Aimez, Vincent

    2015-01-07

    In principle, the upper efficiency limit of any solar cell technology can be determined using the detailed-balance limit formalism. However, “real” solar cells show efficiencies which are always below this theoretical value due to several limiting mechanisms. We study the ability of a solar cell architecture to approach its own theoretical limit, using a novel index introduced in this work, and the amplitude with which the different limiting mechanisms affect the cell efficiency is scrutinized as a function of the electronic gap and the illumination level to which the cell is submitted. The implications for future generations of solar cells aiming at an improved conversion of the solar spectrum are also addressed.

  20. Toxicity Data to Determine Refrigerant Concentration Limits

    SciTech Connect (OSTI)

    Calm, James M.

    2000-09-30

    This report reviews toxicity data, identifies sources for them, and presents resulting exposure limits for refrigerants for consideration by qualified parties in developing safety guides, standards, codes, and regulations. It outlines a method to calculate an acute toxicity exposure limit (ATEL) and from it a recommended refrigerant concentration limit (RCL) for emergency exposures. The report focuses on acute toxicity with particular attention to lethality, cardiac sensitization, anesthetic and central nervous system effects, and other escape-impairing effects. It addresses R-11, R-12, R-22, R-23, R-113, R-114, R-116, R-123, R-124, R-125, R-134, R-134a, R-E134, R-141b, R-142b, R-143a, R-152a, R-218, R-227ea, R-236fa, R-245ca, R-245fa, R-290, R-500, R-502, R-600a, R-717, and R-744. It summarizes additional data for R-14, R-115, R-170 (ethane), R-C318, R-600 (n-butane), and R-1270 (propylene) to enable calculation of limits for blends incorporating them. The report summarizes the data a nd related safety information, including classifications and flammability data. It also presents a series of tables with proposed ATEL and RCL concentrations-in dimensionless form and the latter also in both metric (SI) and inch-pound (IP) units of measure-for both the cited refrigerants and 66 zerotropic and azeotropic blends. They include common refrigerants, such as R-404A, R-407C, R-410A, and R-507A, as well as others in commercial or developmental status. Appendices provide profiles for the cited single-compound refrigerants and for R-500 and R-502 as well as narrative toxicity summaries for common refrigerants. The report includes an extensive set of references.

  1. DISSOLVED CONCENTRATION LIMITS OF RADIOACTIVE ELEMENTS

    SciTech Connect (OSTI)

    P. Bernot

    2005-07-13

    The purpose of this study is to evaluate dissolved concentration limits (also referred to as solubility limits) of elements with radioactive isotopes under probable repository conditions, based on geochemical modeling calculations using geochemical modeling tools, thermodynamic databases, field measurements, and laboratory experiments. The scope of this activity is to predict dissolved concentrations or solubility limits for elements with radioactive isotopes (actinium, americium, carbon, cesium, iodine, lead, neptunium, plutonium, protactinium, radium, strontium, technetium, thorium, and uranium) relevant to calculated dose. Model outputs for uranium, plutonium, neptunium, thorium, americium, and protactinium are provided in the form of tabulated functions with pH and log fCO{sub 2} as independent variables, plus one or more uncertainty terms. The solubility limits for the remaining elements are either in the form of distributions or single values. Even though selection of an appropriate set of radionuclides documented in Radionuclide Screening (BSC 2002 [DIRS 160059]) includes actinium, transport of Ac is not modeled in the total system performance assessment for the license application (TSPA-LA) model because of its extremely short half-life. Actinium dose is calculated in the TSPA-LA by assuming secular equilibrium with {sup 231}Pa (Section 6.10); therefore, Ac is not analyzed in this report. The output data from this report are fundamental inputs for TSPA-LA used to determine the estimated release of these elements from waste packages and the engineered barrier system. Consistent modeling approaches and environmental conditions were used to develop solubility models for the actinides discussed in this report. These models cover broad ranges of environmental conditions so they are applicable to both waste packages and the invert. Uncertainties from thermodynamic data, water chemistry, temperature variation, and activity coefficients have been quantified or otherwise addressed.

  2. Means for limiting and ameliorating electrode shorting

    SciTech Connect (OSTI)

    Konynenburg, R.A. van; Farmer, J.C.

    1999-11-09

    A fuse and filter arrangement is described for limiting and ameliorating electrode shorting in capacitive deionization water purification systems utilizing carbon aerogel, for example. This arrangement limits and ameliorates the effects of conducting particles or debonded carbon aerogel in shorting the electrodes of a system such as a capacitive deionization water purification system. This is important because of the small interelectrode spacing and the finite possibility of debonding or fragmentation of carbon aerogel in a large system. The fuse and filter arrangement electrically protect the entire system from shutting down if a single pair of electrodes is shorted and mechanically prevents a conducting particle from migrating through the electrode stack, shorting a series of electrode pairs in sequence. It also limits the amount of energy released in a shorting event. The arrangement consists of a set of circuit breakers or fuses with one fuse or breaker in the power line connected to one electrode of each electrode pair and a set of screens of filters in the water flow channels between each set of electrode pairs.

  3. Means for limiting and ameliorating electrode shorting

    DOE Patents [OSTI]

    Van Konynenburg, Richard A. (Livermore, CA); Farmer, Joseph C. (Tracy, CA)

    1999-01-01

    A fuse and filter arrangement for limiting and ameliorating electrode shorting in capacitive deionization water purification systems utilizing carbon aerogel, for example. This arrangement limits and ameliorates the effects of conducting particles or debonded carbon aerogel in shorting the electrodes of a system such as a capacitive deionization water purification system. This is important because of the small interelectrode spacing and the finite possibility of debonding or fragmentation of carbon aerogel in a large system. The fuse and filter arrangement electrically protect the entire system from shutting down if a single pair of electrodes is shorted and mechanically prevents a conducting particle from migrating through the electrode stack, shorting a series of electrode pairs in sequence. It also limits the amount of energy released in a shorting event. The arrangement consists of a set of circuit breakers or fuses with one fuse or breaker in the power line connected to one electrode of each electrode pair and a set of screens of filters in the water flow channels between each set of electrode pairs.

  4. Combined SM Higgs Limits at the Tevatron

    SciTech Connect (OSTI)

    Krumnack, N.

    2009-10-01

    We combine results from CDF and D{sup 0} on direct searches for a standard model (SM) Higgs boson (H) in p{bar p} collisions at the Fermilab Tevatron at {radical}s = 1.96 TeV. Compared to the previous Higgs Tevatron combination, more data and new channels WH {yields} {tau}{nu}b{bar b}, VH {yields} {tau}{tau}b{bar b}/jj{tau}{tau}, VH {yields} jjb{bar b}, t{bar t}H {yields} t{bar t}b{bar b} have been added. Most previously used channels have been reanalyzed to gain sensitivity. We use the latest parton distribution functions and gg {yields} H theoretical cross sections when comparing our limits to the SM predictions. With 2.0-3.6 fb{sup -1} of data analyzed at CDF, and 0.9-4.2 fb{sup -1} at D{sup 0}, the 95% C.L. upper limits on Higgs boson production are a factor of 2.5 (0.86) times the SM cross section for a Higgs boson mass of m{sub H} = 115 (165) GeV/c{sup 2}. Based on simulation, the corresponding median expected upper limits are 2.4 (1.1). The mass range excluded at 95% C.L. for a SM Higgs has been extended to 160 < m{sub H} < 170 GeV/c{sup 2}.

  5. Fault Current Limiters (FCL) Fact Sheet | Department of Energy

    Energy Savers [EERE]

    Fault Current Limiters (FCL) Fact Sheet Fault Current Limiters (FCL) Fact Sheet Plugging America Into the Future of Power: Superconducting & Solid-state Power Equipment What are Fault Current Limiters Why do we need Fault Current Limiters What are the benefits to utilities Fault Current Limiter projects PDF icon Fault Current Limiters More Documents & Publications An Assessment of Fault Current Limiter Testing Requirements Superconductivity Program Overview Superconductivity for Electric

  6. Headquarters Facilities Master Security Plan - Chapter 2, Limited Areas,

    Energy Savers [EERE]

    Vault-Type Rooms and Temporary Limited Areas | Department of Energy 2, Limited Areas, Vault-Type Rooms and Temporary Limited Areas Headquarters Facilities Master Security Plan - Chapter 2, Limited Areas, Vault-Type Rooms and Temporary Limited Areas 2016 Headquarters Facilities Master Security Plan - Chapter 2, Limited Areas, Vault-Type Rooms and Temporary Limited Areas This chapter covers the establishment, maintenance, and termination of areas within HQ buildings where classified activities

  7. Torque limited drive for manual valves

    DOE Patents [OSTI]

    Elliott, Philip G. (Metropolis, IL); Underwood, Daniel E. (Paducah, KY)

    1989-01-01

    The present invention is directed to a torque-limiting handwheel device for preventing manual valves from being damaged due to the application of excessive torque during the opening or closing operation of the valves. Torque can only be applied when ridges in the handwheel assembly engage in channels machined in the face of the baseplate. The amount of torque required for disengagement of the ridges from the channels is determined by the force exerted by various Bellville springs and the inclination of the side faces of the channels.

  8. PP-22 British Columbia Electric Company, Limited | Department of Energy

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

    Limited PP-22 British Columbia Electric Company, Limited Presidential permit authorizing British Columbia Electric Company, Limited to construct, operate, and maintain electric transmission facilities at the U.S-Canadian border. PDF icon PP-22 British Columbia Electric Company, Limited More Documents & Publications PP-22 British Columbia Electric Company, Limited, Amendment 1957

  9. PP-22 British Columbia Electric Company, Limited, Amendment 1957 |

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

    Department of Energy Limited, Amendment 1957 PP-22 British Columbia Electric Company, Limited, Amendment 1957 Presidential permit authorizing British Columbia Electric Company, Limited to construct, operate, and maintain electric transmission facilities at the U.S-Canadian border. PDF icon PP-22 British Columbia Electric Company, Limited More Documents & Publications PP-22 British Columbia Electric Company, Limited

  10. EA-361 Aquilon Power Limited | Department of Energy

    Office of Environmental Management (EM)

    1 Aquilon Power Limited EA-361 Aquilon Power Limited Order authorizing Aquilon Power Limited to export electric energy to Canada PDF icon EA-361 Aquilon Power Limited More Documents & Publications Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): EA-361 Aquilon Power Limited EA-196-B Minnesota Power EA-196-C Minnesota Power

  11. Chapter_2_Limited_Areas_Vault-Type_Rooms_and_Temporary_Limited_Areas

    Office of Environmental Management (EM)

    Limited Areas, VTRs, and Temporary Limited Areas Chapter 2 describes the security procedures adopted by DOE HQ to implement the requirements of the following DOE directives: * DOE Order 473.3, Protection Program Operations * DOE Order 471.6, Change 1, Information Security * DOE Order 475.2A, Identifying Classified Information * Classification Bulletin TNP-32, Classification Guidance for Classified Meeting Locations at DOE/NNSA or DOE/NNSA Contractor Sites or Facilities, dated May 27, 2010 DOE

  12. SunDwel Solar Limited | Open Energy Information

    Open Energy Info (EERE)

    SunDwel Solar Limited Jump to: navigation, search Logo: SunDwel Solar Limited Name: SunDwel Solar Limited Address: 1 Tower Road Place: Washington, United Kingdom Sector: Solar...

  13. EA-365 Centre Land Trading Limited | Department of Energy

    Energy Savers [EERE]

    Centre Land Trading Limited EA-365 Centre Land Trading Limited Order Authorizing Centre Land Trading Limited to export electric energy to Canada PDF icon EA-365 Centre Land Trading Limited More Documents & Publications Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): EA-365 Centre Land Trading Limited EA-365-A Centre Lane Trading Limited EA-211-C DTE Energy Trading, Inc

  14. Sanraa Media Limited India formerly Sanra Software | Open Energy...

    Open Energy Info (EERE)

    Sanraa Media Limited India formerly Sanra Software Jump to: navigation, search Name: Sanraa Media Limited India (formerly Sanra Software) Place: Chennai, Tamil Nadu, India Zip:...

  15. Huadian Inner Mongolia Kailu Wind Power Company Limited | Open...

    Open Energy Info (EERE)

    Inner Mongolia Kailu Wind Power Company Limited Jump to: navigation, search Name: Huadian Inner Mongolia Kailu Wind Power Company Limited Place: Jinan, Inner Mongolia Autonomous...

  16. Carbon Compliance Acquisition 16 Limited | Open Energy Information

    Open Energy Info (EERE)

    Compliance Acquisition 16 Limited Jump to: navigation, search Name: Carbon Compliance Acquisition 16 Limited Place: United Kingdom Zip: LS12DS Product: Security broking and fund...

  17. Cleantech Professional Resource Global Limited CPR Global | Open...

    Open Energy Info (EERE)

    Professional Resource Global Limited CPR Global Jump to: navigation, search Name: Cleantech Professional Resource Global Limited (CPR Global) Place: London, United Kingdom Zip:...

  18. Solar Power Company Limited SPC | Open Energy Information

    Open Energy Info (EERE)

    Solar Power Company Limited SPC Jump to: navigation, search Name: Solar Power Company Limited (SPC) Place: Thailand Sector: Solar Product: Thailand-based company that designs,...

  19. Performance limits for maritime Inverse Synthetic Aperture Radar...

    Office of Scientific and Technical Information (OSTI)

    Performance limits for maritime Inverse Synthetic Aperture Radar (ISAR). Citation Details In-Document Search Title: Performance limits for maritime Inverse Synthetic Aperture Radar...

  20. Predetermining acceptable noise limits in EXAFS spectra in the...

    Office of Scientific and Technical Information (OSTI)

    Title: Predetermining acceptable noise limits in EXAFS spectra in the limit of stochastic noise EXAFS measurements are used to probe a variety of experimental systems, but excel at ...

  1. Sree Rayalseema Green Energy Limited | Open Energy Information

    Open Energy Info (EERE)

    Rayalseema Green Energy Limited Jump to: navigation, search Name: Sree Rayalseema Green Energy Limited Place: Gooty, Andhra Pradesh, India Zip: 515 402 Sector: Biomass Product: A...

  2. The Green Renewable Energy Company Limited | Open Energy Information

    Open Energy Info (EERE)

    Renewable Energy Company Limited Jump to: navigation, search Name: The Green Renewable Energy Company Limited Place: London, United Kingdom Sector: Biomass Product: Company to...

  3. Birmingham Research and Development Limited BRDL | Open Energy...

    Open Energy Info (EERE)

    Birmingham Research and Development Limited BRDL Jump to: navigation, search Name: Birmingham Research and Development Limited (BRDL) Place: United Kingdom Sector: Services...

  4. First National Battery PTY Limited FNB Australia | Open Energy...

    Open Energy Info (EERE)

    PTY Limited FNB Australia Jump to: navigation, search Name: First National Battery (PTY) Limited (FNB Australia) Place: Australia Product: Distributes motive power batteries and...

  5. Fujian Jinzaoqiao Hydro Power Limited Corporation | Open Energy...

    Open Energy Info (EERE)

    Jinzaoqiao Hydro Power Limited Corporation Jump to: navigation, search Name: Fujian Jinzaoqiao Hydro Power Limited Corporation Place: Ningde, Fujian Province, China Sector: Hydro...

  6. Mangalam Bio Energen Private Limited | Open Energy Information

    Open Energy Info (EERE)

    Bio Energen Private Limited Jump to: navigation, search Name: Mangalam Bio-Energen Private Limited Place: Maharashtra, India Sector: Biomass Product: A project developer thats...

  7. Tianjin DH Power Investment Limited | Open Energy Information

    Open Energy Info (EERE)

    Tianjin DH Power Investment Limited Jump to: navigation, search Name: Tianjin DH Power Investment Limited Place: Tianjin, Tianjin Municipality, China Sector: Wind energy Product:...

  8. Genesis Energy Investment Public Limited Company Genesis Solar...

    Open Energy Info (EERE)

    Investment Public Limited Company Genesis Solar Jump to: navigation, search Name: Genesis Energy Investment Public Limited Company (Genesis Solar) Place: Budapest, Hungary Zip:...

  9. Liaoning Shenhua Xiehe Wind Power Investment Limited | Open Energy...

    Open Energy Info (EERE)

    Shenhua Xiehe Wind Power Investment Limited Jump to: navigation, search Name: Liaoning Shenhua Xiehe Wind Power Investment Limited Place: Liaoning Province, China Sector: Wind...

  10. Jilin CWP Milestone Wind Power Investment Limited | Open Energy...

    Open Energy Info (EERE)

    Jilin CWP Milestone Wind Power Investment Limited Jump to: navigation, search Name: Jilin CWP-Milestone Wind Power Investment Limited Place: Baicheng, Jilin Province, China Sector:...

  11. Southwest Wind Farm Private Limited ESS ARR Group | Open Energy...

    Open Energy Info (EERE)

    Southwest Wind Farm Private Limited ESS ARR Group Jump to: navigation, search Name: Southwest Wind Farm Private Limited (ESS ARR Group) Place: Coimbatore, Tamil Nadu, India Zip:...

  12. Sri Sai Manasa Nature Tech Pvt Limited | Open Energy Information

    Open Energy Info (EERE)

    Sai Manasa Nature Tech Pvt Limited Jump to: navigation, search Name: Sri Sai Manasa Nature Tech Pvt Limited Place: Hyderabad, Andhra Pradesh, India Zip: 500072 Sector: Services...

  13. Naranja Sahakari Sakkare Karkhane Limited NSSKL | Open Energy...

    Open Energy Info (EERE)

    Sakkare Karkhane Limited (NSSKL) Place: Karnataka, India Product: Karnataka based sugar mill with co-generation activities. References: Naranja Sahakari Sakkare Karkhane Limited...

  14. Earls Nook Limited Formerly Biofuels Corporation Plc | Open Energy...

    Open Energy Info (EERE)

    Earls Nook Limited Formerly Biofuels Corporation Plc Jump to: navigation, search Name: Earls Nook Limited (Formerly Biofuels Corporation Plc) Place: Teeside, United Kingdom Zip:...

  15. IndianOil CREDA Biofuels Limited | Open Energy Information

    Open Energy Info (EERE)

    IndianOil CREDA Biofuels Limited Jump to: navigation, search Name: IndianOil-CREDA Biofuels Limited Place: Mumbai, Chhattisgarh, India Zip: 400 051 Sector: Renewable Energy...

  16. Jilin Taihe Wind Power Limited | Open Energy Information

    Open Energy Info (EERE)

    Taihe Wind Power Limited Jump to: navigation, search Name: Jilin Taihe Wind Power Limited Place: Zhenlai, Jilin Province, China Sector: Wind energy Product: Top Well and Tianjin DH...

  17. Tongliao Taihe Wind Power Limited | Open Energy Information

    Open Energy Info (EERE)

    Taihe Wind Power Limited Jump to: navigation, search Name: Tongliao Taihe Wind Power Limited Place: Tongliao City, Inner Mongolia Autonomous Region, China Sector: Wind energy...

  18. Huaneng Shouguang Wind Power Company Limited | Open Energy Information

    Open Energy Info (EERE)

    Huaneng Shouguang Wind Power Company Limited Jump to: navigation, search Name: Huaneng Shouguang Wind Power Company Limited Place: Shouguang, Shandong Province, China Sector: Wind...

  19. Polymer Electrolyte Fuel Cell Lifetime Limitations: The Role...

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

    Electrolyte Fuel Cell Lifetime Limitations: The Role of Electrocatalyst Degradation Polymer Electrolyte Fuel Cell Lifetime Limitations: The Role of Electrocatalyst Degradation ...

  20. (Expired) Nationwide Limited Public Interest Waiver for LED Lighting...

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

    Limited Public Interest Waiver for LED Lighting and HVAC Units: February 11, 2010 (Expired) Nationwide Limited Public Interest Waiver for LED Lighting and HVAC Units: February ...

  1. TurboTech Precision Engineering Private Limited | Open Energy...

    Open Energy Info (EERE)

    TurboTech Precision Engineering Private Limited Jump to: navigation, search Name: TurboTech Precision Engineering Private Limited Place: Bangalore, India Zip: 560 044 Sector:...

  2. Indian Renewable Energy Development Agency Limited IREDA | Open...

    Open Energy Info (EERE)

    Development Agency Limited IREDA Jump to: navigation, search Name: Indian Renewable Energy Development Agency Limited (IREDA) Place: New Delhi, Delhi (NCT), India Zip: 110003...

  3. Allco Renewable Energy Group Limited LLC | Open Energy Information

    Open Energy Info (EERE)

    Allco Renewable Energy Group Limited LLC Jump to: navigation, search Name: Allco Renewable Energy Group Limited, LLC Place: New York, New York Zip: 10005 Sector: Biomass, Solar,...

  4. BP Energy India Private Limited BPEIPL | Open Energy Information

    Open Energy Info (EERE)

    India Private Limited BPEIPL Jump to: navigation, search Name: BP Energy India Private Limited (BPEIPL) Place: India Sector: Wind energy Product: India-based, subsidiary of Green...

  5. Use Lower Flammable Limit Monitoring Equipment to Improve Process...

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

    Lower Flammable Limit Monitoring Equipment to Improve Process Oven Efficiency Use Lower Flammable Limit Monitoring Equipment to Improve Process Oven Efficiency This process heating ...

  6. Karnataka Power Corporation Limited and National Thermal Power...

    Open Energy Info (EERE)

    Power Corporation Limited and National Thermal Power Corporation JV Jump to: navigation, search Name: Karnataka Power Corporation Limited and National Thermal Power Corporation JV...

  7. Carbon Compliance Acquisition 5 Limited | Open Energy Information

    Open Energy Info (EERE)

    Compliance Acquisition 5 Limited Jump to: navigation, search Name: Carbon Compliance Acquisition 5 Limited Place: Greater London, United Kingdom Zip: EC2M 2TD Sector: Carbon...

  8. China Longyuan Power Group Corporation Limited | Open Energy...

    Open Energy Info (EERE)

    Power Group Corporation Limited Jump to: navigation, search Name: China Longyuan Power Group Corporation Limited Place: Beijing, Beijing Municipality, China Zip: 100034 Sector:...

  9. Ecotality Inc formerly Alchemy Enterprises Limited | Open Energy...

    Open Energy Info (EERE)

    Inc formerly Alchemy Enterprises Limited Jump to: navigation, search Name: Ecotality Inc (formerly Alchemy Enterprises Limited) Place: Scottsdale, Arizona Zip: 85251 Sector:...

  10. Nahar Industrial Enterprises Limited NIEL | Open Energy Information

    Open Energy Info (EERE)

    Industrial Enterprises Limited NIEL Jump to: navigation, search Name: Nahar Industrial Enterprises Limited (NIEL) Place: Punjab, India Zip: 140506 Sector: Biomass Product:...

  11. Free Stream Capital Partners Limited | Open Energy Information

    Open Energy Info (EERE)

    Capital Partners Limited Jump to: navigation, search Name: Free Stream Capital Partners Limited Place: London, Greater London, United Kingdom Zip: SW1Y 4AA Sector: Wind energy...

  12. EnviTec Biogas India Private Limited | Open Energy Information

    Open Energy Info (EERE)

    Private Limited Jump to: navigation, search Name: EnviTec Biogas India Private Limited Place: India Product: Manufacturer of anaerobic digesters. References: EnviTec Biogas India...

  13. Chiranjjeevi Wind Energy Limited CWEL | Open Energy Information

    Open Energy Info (EERE)

    Chiranjjeevi Wind Energy Limited CWEL Jump to: navigation, search Name: Chiranjjeevi Wind Energy Limited (CWEL) Place: Pollachi, Tamil Nadu, India Zip: 642 002 Sector: Wind energy...

  14. Neutral depletion and the helicon density limit

    SciTech Connect (OSTI)

    Magee, R. M.; Galante, M. E.; Carr, J. Jr.; Lusk, G.; McCarren, D. W.; Scime, E. E.

    2013-12-15

    It is straightforward to create fully ionized plasmas with modest rf power in a helicon. It is difficult, however, to create plasmas with density >10{sup 20} m{sup ?3}, because neutral depletion leads to a lack of fuel. In order to address this density limit, we present fast (1 MHz), time-resolved measurements of the neutral density at and downstream from the rf antenna in krypton helicon plasmas. At the start of the discharge, the neutral density underneath the antenna is reduced to 1% of its initial value in 15 ?s. The ionization rate inferred from these data implies that the electron temperature near the antenna is much higher than the electron temperature measured downstream. Neutral density measurements made downstream from the antenna show much slower depletion, requiring 14 ms to decrease by a factor of 1/e. Furthermore, the downstream depletion appears to be due to neutral pumping rather than ionization.

  15. Dynamically limiting energy consumed by cooling apparatus

    DOE Patents [OSTI]

    Chainer, Timothy J.; David, Milnes P.; Iyengar, Madhusudan K.; Parida, Pritish R.; Schmidt, Roger R.; Schultz, Mark D.

    2015-05-26

    Cooling apparatuses and methods are provided which include one or more coolant-cooled structures associated with an electronics rack, a coolant loop coupled in fluid communication with one or more passages of the coolant-cooled structure(s), one or more heat exchange units coupled to facilitate heat transfer from coolant within the coolant loop, and N controllable components associated with the coolant loop or the heat exchange unit(s), wherein N.gtoreq.1. The N controllable components facilitate circulation of coolant through the coolant loop or transfer of heat from the coolant via the heat exchange unit(s). A controller is coupled to the N controllable components, and dynamically adjusts operation of the N controllable components, based on Z input parameters and one or more specified constraints, to provide a specified cooling to the coolant-cooled structure(s), while limiting energy consumed by the N controllable components, wherein Z.gtoreq.1.

  16. Dynamically limiting energy consumed by cooling apparatus

    DOE Patents [OSTI]

    Chainer, Timothy J.; David, Milnes P.; Iyengar, Madhusudan K.; Parida, Pritish R.; Schmidt, Roger R.; Schultz, Mark D.

    2015-06-09

    Cooling methods are provided which include providing: one or more coolant-cooled structures associated with an electronics rack, a coolant loop coupled in fluid communication with one or more passages of the coolant-cooled structure(s), one or more heat exchange units coupled to facilitate heat transfer from coolant within the coolant loop, and N controllable components associated with the coolant loop or the heat exchange unit(s), wherein N.gtoreq.1. The N controllable components facilitate circulation of coolant through the coolant loop or transfer of heat from the coolant via the heat exchange unit(s). A controller is also provided to dynamically adjust operation of the N controllable components, based on Z input parameters and one or more specified constraints, and provide a specified cooling to the coolant-cooled structure(s), while limiting energy consumed by the N controllable components, wherein Z.gtoreq.1.

  17. Various factors affect coiled tubing limits

    SciTech Connect (OSTI)

    Yang, Y.S.

    1996-01-15

    Safety and reliability remain the primary concerns in coiled tubing operations. Factors affecting safety and reliability include corrosion, flexural bending, internal (or external) pressure and tension (or compression), and mechanical damage due to improper use. Such limits as coiled tubing fatigue, collapse, and buckling need to be understood to avoid disaster. With increased use of coiled tubing, operators will gain more experience. But at the same time, with further research and development of coiled tubing, the manufacturing quality will be improved and fatigue, collapse, and buckling models will become more mature, and eventually standard specifications will be available. This paper reviews the uses of coiled tubing and current research on mechanical behavior of said tubing. It also discusses several models used to help predict fatigue and failure levels.

  18. Remotely replaceable tokamak plasma limiter tiles

    DOE Patents [OSTI]

    Tsuo, Simon (Lakewood, CO), Langford, Alison A. (Boulder, CO)

    1989-01-01

    U-shaped limiter tiles placed end-to-end over a pair of parallel runners secured to a wall have two rods which engage L-shaped slots in the runners. The short receiving legs of the L-shaped slots are perpendicular to the wall and open away from the wall, while long retaining legs are parallel to and adjacent the wall. A sliding bar between the runners has grooves with clips to retain the rods pressed into receiving legs of the L-shaped slots in the runners. Sliding the bar in the direction of retaining legs of the L-shaped slots latches the tiles in place over the runners. Resilient contact strips between the parallel arms of the U-shaped tiles and the wall assure thermal and electrical contact with the wall.

  19. Self field triggered superconducting fault current limiter

    DOE Patents [OSTI]

    Tekletsadik, Kasegn D. (Rexford, NY)

    2008-02-19

    A superconducting fault current limiter array with a plurality of superconductor elements arranged in a meanding array having an even number of supconductors parallel to each other and arranged in a plane that is parallel to an odd number of the plurality of superconductors, where the odd number of supconductors are parallel to each other and arranged in a plane that is parallel to the even number of the plurality of superconductors, when viewed from a top view. The even number of superconductors are coupled at the upper end to the upper end of the odd number of superconductors. A plurality of lower shunt coils each coupled to the lower end of each of the even number of superconductors and a plurality of upper shunt coils each coupled to the upper end of each of the odd number of superconductors so as to generate a generally orthoganal uniform magnetic field during quenching using only the magenetic field generated by the superconductors.

  20. Authorized limits for Fernald copper ingots

    SciTech Connect (OSTI)

    Frink, N.; Kamboj, S.; Hensley, J.; Chen, S. Y.

    1997-09-01

    This development document contains data and analysis to support the approval of authorized limits for the unrestricted release of 59 t of copper ingots containing residual radioactive material from the U.S. Department of Energy (DOE) Fernald Environmental Management Project (FEMP). The analysis presented in this document comply with the requirements of DOE Order 5400.5, {open_quotes}Radiation Protection of the Public and the Environment,{close_quotes} as well as the requirements of the proposed promulgation of this order as 10 CFR Part 834. The document was developed following the step-by-step process described in the Draft Handbook for Controlling Release for Reuse or Recycle Property Containing Residual Radioactive Material.

  1. Thermal island destabilization and the Greenwald limit

    SciTech Connect (OSTI)

    White, R. B.; Gates, D. A.; Brennan, D. P.

    2015-02-15

    Magnetic reconnection is ubiquitous in the magnetosphere, the solar corona, and in toroidal fusion research discharges. In a fusion device, a magnetic island saturates at a width which produces a minimum in the magnetic energy of the configuration. At saturation, the modified current density profile, a function of the flux in the island, is essentially flat, the growth rate proportional to the difference in the current at the O-point and the X-point. Further modification of the current density profile in the island interior causes a change in the island stability and additional growth or contraction of the saturated island. Because field lines in an island are isolated from the outside plasma, an island can heat or cool preferentially depending on the balance of Ohmic heating and radiation loss in the interior, changing the resistivity and hence the current in the island. A simple model of island destabilization due to radiation cooling of the island is constructed, and the effect of modification of the current within an island is calculated. An additional destabilization effect is described, and it is shown that a small imbalance of heating can lead to exponential growth of the island. A destabilized magnetic island near the plasma edge can lead to plasma loss, and because the radiation is proportional to plasma density and charge, this effect can cause an impurity dependent density limit.

  2. MASTER Atomic Energy of Canada Limited

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

    Canada Limited ENERGY DISTRIBUTIONS OF NEUTRONS SCATTERED FROM GRAPHITE, LIGHT AND HEAVY WATER,ICE,ZIRCONIUM HY0RI0E,1ITHIUM HYORIOE,SOOIUM HYDRIDE AND CHLORIDE BY THE BERYLLIUM DETECTOR METHOD C R N P 9 4 8 b y A . D . B . W O O D S , B . N . B R O C K H O U S E , M. S A K A M O T O A N D R . N . S I N C L A I R P a p e r f o r P r e s e n t a t i o n a t t h e I A E A S y m p o s i u m on I n e l a s t i c S c a t t e r i n g o f N e u t r o n s i n S o l i d s a n d L i q u i d s , V i e n n

  3. The limits of the nuclear landscape

    SciTech Connect (OSTI)

    Nazarewicz, Witold; Erler, J.; Birge, N.; Kortelainen, E. M.; Olsen, E.; Perhac, A.; Stoitsov, M.

    2012-01-01

    In 2011, 100 new nuclides were discovered1. They joined the approximately 3,000 stable and radioactive nuclides that either occur naturally on Earth or are synthesized in the laboratory2,3. Every atomic nucleus, characterized by a specific number of protons and neutrons, occupies a spot on the chart of nuclides, which is bounded by drip lines indicating the values of neutron and proton number at which nuclear binding ends. The placement of the neutron drip line for the heavier elements is based on theoretical predictions using extreme extrapolations, and so is uncertain. However, it is not known how uncertain it is or how many protons and neutrons can be bound in a nucleus. Here we estimate these limits of the nuclear landscape and provide statistical and systematic uncertainties for our predictions. We use nuclear density functional theory, several Skyrme interactions and high-performance computing, and find that the number of bound nuclides with between 2 and 120 protons is around 7,000. We find that extrapolations for drip-line positions and selected nuclear properties, including neutron separation energies relevant to astrophysical processes, are very consistent between the models used.

  4. The ultimate downscaling limit of FETs.

    SciTech Connect (OSTI)

    Mamaluy, Denis; Gao, Xujiao; Tierney, Brian David

    2014-10-01

    We created a highly efficient, universal 3D quant um transport simulator. We demonstrated that the simulator scales linearly - both with the problem size (N) and number of CPUs, which presents an important break-through in the field of computational nanoelectronics. It allowed us, for the first time, to accurately simulate and optim ize a large number of realistic nanodevices in a much shorter time, when compared to other methods/codes such as RGF[~N 2.333 ]/KNIT, KWANT, and QTBM[~N 3 ]/NEMO5. In order to determine the best-in-class for different beyond-CMOS paradigms, we performed rigorous device optimization for high-performance logic devices at 6-, 5- and 4-nm gate lengths. We have discovered that there exists a fundamental down-scaling limit for CMOS technology and other Field-Effect Transistors (FETs). We have found that, at room temperatures, all FETs, irre spective of their channel material, will start experiencing unacceptable level of thermally induced errors around 5-nm gate lengths.

  5. PP-85-3 Boliden Power Limited | Department of Energy

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

    3 Boliden Power Limited PP-85-3 Boliden Power Limited Presidential Permit authorizing Boliden Power Limited to construct, operate, and maintain transmission facilities at the U.S. - Canada Border. PDF icon PP 85-3 Boliden Power Limited More Documents & Publications PP-85-2 Boliden Westmin (Canada) Limited PP-45-2 Northern States Power Company PP-61-1 Minnkota Power Cooperative (MPC

  6. FAQs for Limited English Proficiency Program | Department of Energy

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

    FAQs for Limited English Proficiency Program FAQs for Limited English Proficiency Program 1. Q: Who is a Limited English Proficient (LEP) individual? A: Individuals who do not speak English as their primary language and who have a limited ability to read, speak, write, or understand English can be limited English proficient, or "LEP." These individuals may be entitled language assistance with respect to a particular type of service, benefit, or encounter. 2.Q: What are the relevant

  7. The History of the Light Bulb | Department of Energy

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

    pioneer Charles Proteus Steinmetz (center in light-colored suit) poses with Albert Einstein (immediate left) and other inventors at the RCA Brunswick, New Jersey,...

  8. Limited Electricity Generation Supply and Limited Natural Gas Supply Cases (released in AEO2008)

    Reports and Publications (EIA)

    2008-01-01

    Development of U.S. energy resources and the permitting and construction of large energy facilities have become increasingly difficult over the past 20 years, and they could become even more difficult in the future. Growing public concern about global warming and CO2 emissions also casts doubt on future consumption of fossil fuels -- particularly coal, which releases the largest amount of CO2 per unit of energy produced. Even without regulations to limit greenhouse gas emissions in the United States, the investment community may already be limiting the future use of some energy options. In addition, there is considerable uncertainty about the future availability of, and access to, both domestic and foreign natural gas resources.

  9. Dong Energy London Array Limited Formerly known as CORE Ltd ...

    Open Energy Info (EERE)

    Limited is a UK Joint Venture between Farm energy and Energi E2, involved in offshore wind farms in the outer Thames Estuary. References: Dong Energy London Array Limited...

  10. CO2e Capital Limited | Open Energy Information

    Open Energy Info (EERE)

    e Capital Limited Jump to: navigation, search Name: CO2e Capital Limited Place: New York City, New York Zip: 10022 Product: New York based merchant bank focused on reducing global...

  11. Tritium Detection Methods and Limitations | Department of Energy

    Office of Environmental Management (EM)

    Detection Methods and Limitations Tritium Detection Methods and Limitations Presentation from the 33rd Tritium Focus Group Meeting held in Aiken, South Carolina on April 22-24, 2014. PDF icon Tritium Detection Methods and Limitations More Documents & Publications Methods to Improve the Lower Limit of Detectionfor Tritium in the Air and on Surfaces Improved Monitor Design and Configuration for Reducing Reported Tritium Discharges from the Orphee Research Reactor

  12. Investigation of Microscopic Materials Limitations of Superconducting RF

    Office of Scientific and Technical Information (OSTI)

    Cavities (Technical Report) | SciTech Connect Technical Report: Investigation of Microscopic Materials Limitations of Superconducting RF Cavities Citation Details In-Document Search Title: Investigation of Microscopic Materials Limitations of Superconducting RF Cavities The high-field performance of SRF cavities is often limited by breakdown events below the intrinsic limiting surface fields of Nb, and there is abundant evidence that these breakdown events are localized in space inside the

  13. PP-206 Frontera Generation Limited Partnership | Department of Energy

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

    6 Frontera Generation Limited Partnership PP-206 Frontera Generation Limited Partnership Presidential permit authorizing Frontera Generation Limited Partnership to construct, operate, and maintain electric transmission facilities at the U.S-Mexican border. PDF icon PP-206 Frontera Generation Limited Partnership More Documents & Publications Application to Export Electric Energy OE Docket No. EA-403 Frontera Marketing, LLC PP-174 Imperial Irrigation District PP-53 Rio Grande Electric

  14. Use Lower Flammable Limit Monitoring Equipment to Improve Process Oven

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

    Efficiency | Department of Energy Lower Flammable Limit Monitoring Equipment to Improve Process Oven Efficiency Use Lower Flammable Limit Monitoring Equipment to Improve Process Oven Efficiency This process heating tip sheet recommends using lower flammable limit monitoring equipment to improve oven efficiency. PROCESS HEATING TIP SHEET #11 PDF icon Use Lower Flammable Limit Monitoring Equipment to Improve Process Oven Efficiency (October 2007) More Documents & Publications Check Burner

  15. UNEP-Risoe-Economics of GHG Limitations: Country Study Series...

    Open Energy Info (EERE)

    Gas Limitations1 Country study series: Argentina, Ecuador, Estonia, Hungary, Indonesia, Mauritius, Senegal, Vietnam Parallel country studies: Botswana, Tanzania, Zambia...

  16. Representation of Limited Rights Data and Restricted Computer Software |

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

    Department of Energy Representation of Limited Rights Data and Restricted Computer Software Representation of Limited Rights Data and Restricted Computer Software PDF icon Representation of Limited Rights Data and Restricted Computer Software More Documents & Publications CLB-1003.PDF&#0; Intellectual Property Provisions (CSB-1003) Cooperative Agreement Research, Development, or Demonstration Domestic Small Businesses CDLB-1003.PDF&#0;

  17. An alternative approach to achieving water quality-based limits

    SciTech Connect (OSTI)

    Hart, C.M.; Graeser, W.C.

    1995-12-01

    Since May 1982, members of the Iron and Steel Industry have been required to meet effluent limits based on Best Available Technology (BAT) for a process water discharge to receiving stream. US Steel Clairton Works has been successful in meeting these limits in the last three years; however, the current regulatory thrust is toward more stringent limits based on water quality. In cases of smaller streams such as the receiving stream for Clairton Works` process outfall, these limits can be very rigid. This paper will discuss the alternative approaches investigated to meet the new more stringent limits including the solution chosen.

  18. Conditions for diffusion-limited and reaction-limited recombination in nanostructured solar cells

    SciTech Connect (OSTI)

    Ansari-Rad, Mehdi; Department of Physics, University of Shahrood, Shahrood ; Anta, Juan A.; Arzi, Ezatollah

    2014-04-07

    The performance of Dye-sensitized solar cells (DSC) and related devices made of nanostructured semiconductors relies on a good charge separation, which in turn is achieved by favoring charge transport against recombination. Although both processes occur at very different time scales, hence ensuring good charge separation, in certain cases the kinetics of transport and recombination can be connected, either in a direct or an indirect way. In this work, the connection between electron transport and recombination in nanostructured solar cells is studied both theoretically and by Monte Carlo simulation. Calculations using the Multiple-Trapping model and a realistic trap distribution for nanostructured TiO{sub 2} show that for attempt-to-jump frequencies higher than 10{sup 11}10{sup 13} Hz, the system adopts a reaction limited (RL) regime, with a lifetime which is effectively independent from the speed of the electrons in the transport level. For frequencies lower than those, and depending on the concentration of recombination centers in the material, the system enters a diffusion-limited regime (DL), where the lifetime increases if the speed of free electrons decreases. In general, the conditions for RL or DL recombination depend critically on the time scale difference between recombination kinetics and free-electron transport. Hence, if the former is too rapid with respect to the latter, the system is in the DL regime and total thermalization of carriers is not possible. In the opposite situation, a RL regime arises. Numerical data available in the literature, and the behavior of the lifetime with respect to (1) density of recombination centers and (2) probability of recombination at a given center, suggest that a typical DSC in operation stays in the RL regime with complete thermalization, although a transition to the DL regime may occur for electrolytes or hole conductors where recombination is especially rapid or where there is a larger dispersion of energies of electron acceptors.

  19. DOE Orders Mirant Power Plant to Operate Under Limited Circumstances |

    Energy Savers [EERE]

    Department of Energy Orders Mirant Power Plant to Operate Under Limited Circumstances DOE Orders Mirant Power Plant to Operate Under Limited Circumstances Docket No. EO-05-01. Order No. 202-05-3: Secretary of Energy Samuel W. Bodman today issued an order requiring Mirant Corporation's Potomac River Generating Station in Alexandria, Virginia (Mirant) to immediately resume limited operation. The order will help provide electric reliability for Washington, D.C., and will do so at the lowest

  20. Theory of factors limiting high gradient operation of warm accelerating

    Office of Scientific and Technical Information (OSTI)

    structures (Technical Report) | SciTech Connect Theory of factors limiting high gradient operation of warm accelerating structures Citation Details In-Document Search Title: Theory of factors limiting high gradient operation of warm accelerating structures This final report summarizes the research performed during the time period from 8/1/2010 to 7/31/2013. It consists of two parts describing our studies in two directions: (a) analysis of factors limiting operation of dielectric-loaded

  1. Representation of Limited Rights Data and Restricted Computer Software |

    Energy Savers [EERE]

    Department of Energy Representation of Limited Rights Data and Restricted Computer Software Representation of Limited Rights Data and Restricted Computer Software Any data delivered under an award resulting from this announcement is subject to the Rights in Data - General or the Rights in Data - Programs Covered Under Special Data Statutes clause (See Intellectual Property Provisions). Under these clauses, the Recipient may withhold from delivery data that qualify as limited rights data or

  2. An Assessment of Fault Current Limiter Testing Requirements | Department of

    Energy Savers [EERE]

    Energy Fault Current Limiter Testing Requirements An Assessment of Fault Current Limiter Testing Requirements The U.S. Department of Energy's (DOE) Office of Electricity Delivery and Energy Reliability (OE) is conducting research and development (R&D) on next-generation electricity delivery equipment including fault current limiters (FCLs). Prototype FCL devices are undergoing testing with the aim of market-ready devices making their debut in the transmission and distribution (T&D)

  3. Limited-Notice Performance Test Inspectors Guide | Department of Energy

    Office of Environmental Management (EM)

    Limited-Notice Performance Test Inspectors Guide Limited-Notice Performance Test Inspectors Guide October 2014 This document describes the Limited-Notice Performance Testing Program employed by DOE's Office of Enterprise Assessments to evaluate DOE safeguards and security programs. This document is one in a series of Inspectors Guides used by the Office of Security Assessments, within DOE's Office of Enterprise Assessments (EA), to conduct Independent Oversight appraisals of safeguards and

  4. Idaho Cleanup Project Clearance Limits for Personal Property | Department

    Office of Environmental Management (EM)

    of Energy Idaho Cleanup Project Clearance Limits for Personal Property Idaho Cleanup Project Clearance Limits for Personal Property Kevin Konzen*, CH2M-WG Idaho, LLC ; Craig Nesshoefer, Idaho Cleanup Project Abstract: CH2M-WG Idaho, LLC (CWI) had sought alternative surface clearance limits for personal property from those referenced in DOE Order 458.1, which were approved September 2013 by the Department of Energy. Because much of the property would remain within DOE control, implementation

  5. Memorandum for the Secretary (Limited Waiver of Ethics Pledge Restriction)

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

    | Department of Energy for the Secretary (Limited Waiver of Ethics Pledge Restriction) Memorandum for the Secretary (Limited Waiver of Ethics Pledge Restriction) Secretary Ernest J. Moniz was sworn into office on May 21, 2013. This is the Memorandum for the Secretary from Susan Beard, the Designated Agency Ethics Official. It pertains to the Determination to Grant a Limited Waiver of Ethics Pledge Restrirction and Authorization of Secretary Ernest J. Moniz. View this document in PDF format.

  6. Golden Reading Room: Office of Acquisition Documents, Sole of Limited

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

    Source Justifications | Department of Energy Sole of Limited Source Justifications Golden Reading Room: Office of Acquisition Documents, Sole of Limited Source Justifications Below are electronic versions of Golden Field Office Reading Room documents that were created after November 1, 1996, per the requirements of the Electronic Freedom of Information Act Amendment of 1996. Most documents are available in Adobe Acrobat Portable Document Format (PDF). Sole of Limited Source Justificati

  7. Call for emission limits heats debate on global warming

    SciTech Connect (OSTI)

    Singer, S.F.

    1997-08-01

    Emission limits on carbon dioxide is recommended by an Intergovernmental Panel in a discussion on global warming. (AIP) {copyright} {ital 1997 American Institute of Physics.}

  8. Rucheng County Yuzaikou Hydropower Company Limited | Open Energy...

    Open Energy Info (EERE)

    Place: Nandong Town, Hunan Province, China Zip: 423000 Sector: Hydro Product: Hydroelectric developer References: Rucheng County Yuzaikou Hydropower Company Limited1 This...

  9. Articulated limiter blade for a tokamak fusion reactor

    DOE Patents [OSTI]

    Doll, David W. (San Diego, CA)

    1985-01-01

    A limiter blade for a large tokomak fusion reactor includes three articulated blade sections for enabling the limiter blade to be adjusted for plasmas of different sizes. Each blade section is formed of a rigid backing plate carrying graphite tiles coated with titanium carbide, and the limiter blade forms a generally elliptic contour in both the poloidal and toroidal directions to uniformly distribute the heat flow to the blade. The limiter blade includes a central blade section movable along the major radius of the vacuum vessel, and upper and lower pivotal blade sections which may be pivoted by linear actuators having rollers held to the back surface of the pivotal blade sections.

  10. Apollo Solar Lanka Limited ASLL | Open Energy Information

    Open Energy Info (EERE)

    Lanka Zip: 10250 Sector: Solar Product: Sri Lankan company that is developing both PV & thermal solar technologies. References: Apollo Solar Lanka Limited (ASLL)1 This article...

  11. Belgaum Wind Farms Private Limited BWFPL | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name: Belgaum Wind Farms Private Limited (BWFPL) Place: Mumbai, Maharashtra, India Zip: 400705 Product: Mumbai-based project developer and subsidiary...

  12. Enercon Financial Consultancy Private Limited | Open Energy Informatio...

    Open Energy Info (EERE)

    Jump to: navigation, search Name: Enercon Financial Consultancy Private Limited Place: Mumbai, Maharashtra, India Zip: 400 058 Sector: Wind energy Product: Mumbai-based arm of...

  13. UNEP-Risoe-Economics of GHG Limitations: Country Study Series...

    Open Energy Info (EERE)

    Econo References Economics of Greenhouse Gas Limitations1 Country study series: Argentina, Ecuador, Estonia, Hungary, Indonesia, Mauritius, Senegal, Vietnam Parallel country...

  14. Recovery Efficiency, False Negative Rate, and Limit of Detection...

    Office of Scientific and Technical Information (OSTI)

    Recovery Efficiency, False Negative Rate, and Limit of Detection Performance of a Validated Macrofoam-Swab Sampling Method with Low Surface Concentrations of Two Bacillus anthracis...

  15. GI Power Corporation Limited GIPCL | Open Energy Information

    Open Energy Info (EERE)

    New Delhi, Delhi (NCT), India Zip: 110020 Sector: Wind energy Product: Delhi-based start-up wind project developer. References: GI Power Corporation Limited (GIPCL)1 This...

  16. Tehri Hydro Development Corporation Limited | Open Energy Information

    Open Energy Info (EERE)

    Solar, Wind energy Product: Focused on hydro projects; diversifying into solar and wind power. References: Tehri Hydro Development Corporation Limited1 This article is a stub....

  17. Thermal island destabilization and the Greenwald limit (Journal...

    Office of Scientific and Technical Information (OSTI)

    Details In-Document Search This content will become publicly available on February 24, 2016 Title: Thermal island destabilization and the Greenwald limit Authors: White, R....

  18. Articulated limiter blade for a tokamak fusion reactor

    DOE Patents [OSTI]

    Doll, D.W.

    1982-10-21

    A limiter blade for a large tokomak fusion reactor includes three articulated blade sections for enabling the limiter blade to be adjusted for plasmas of different sizes. Each blade section is formed of a rigid backing plate carrying graphite tiles coated with titanium carbide, and the limiter blade forms a generally elliptic contour in both the poloidal and toroidal directions to uniformly distribute the heat flow to the blade. The limiter blade includes a central blade section movable along the major radius of the vacuum vessel, and upper and lower pivotal blade sections which may be pivoted by linear actuators having rollers held to the back surface of the pivotal blade sections.

  19. Increasing ask query limit | OpenEI Community

    Open Energy Info (EERE)

    via json. For example, this query only returns two entries: http:en.openei.orgservicesrestutilityrates?versionlatest&formatjsonplain&offset9998&limit30&detailb...

  20. Spark Solar Australia Proprietary Limited | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name: Spark Solar Australia Proprietary Limited Place: O Connor, Australian Capital Territory, Australia Zip: 2602 Product: Australia-based...

  1. Experimental Evidence for Self-Limiting Reactive Flow through...

    Office of Scientific and Technical Information (OSTI)

    Experimental Evidence for Self-Limiting Reactive Flow through a Fractured Cement Core: Implications for Time-Dependent Wellbore Leakage Citation Details In-Document Search Title: ...

  2. Representation of Limited Rights Data and Restricted Computer...

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

    REPRESENTATION OF LIMITED RIGHTS DATA AND RESTRICTED COMPUTER SOFTWARE Applicant: Funding Opportunity AnnouncementSolicitation No.: (a) Any data delivered under an award resulting...

  3. GCL Poly Energy Holdings Limited | Open Energy Information

    Open Energy Info (EERE)

    energy enterprise who specialize in developing, managing and operating green energy projects in mainland China. References: GCL-Poly Energy Holdings Limited1 This...

  4. WAC - 173 - 221 - Discharge Standards and Effluent Limitations...

    Open Energy Info (EERE)

    - Discharge Standards and Effluent Limitations for Domestic Wastewater Facilities Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document-...

  5. Property:PotentialBiopowerGaseousCapacity | Open Energy Information

    Open Energy Info (EERE)

    1000 kW,kWe,KW,kilowatt,KiloWatt,KILOWATT,kilowatts,KiloWatts,KILOWATT,KILOWATTS 1000000 W,We,watt,watts,Watt,Watts,WATT,WATTS 1000000000 mW,milliwatt,milliwatts,MILLIWATT,MILLIWA...

  6. Property:GeneratingCapacity | Open Energy Information

    Open Energy Info (EERE)

    1000 kW,kWe,KW,kilowatt,KiloWatt,KILOWATT,kilowatts,KiloWatts,KILOWATT,KILOWATTS 1000000 W,We,watt,watts,Watt,Watts,WATT,WATTS 1000000000 mW,milliwatt,milliwatts,MILLIWATT,MILLIWA...

  7. Property:GrossProdCapacity | Open Energy Information

    Open Energy Info (EERE)

    1000 kW,kWe,KW,kilowatt,KiloWatt,KILOWATT,kilowatts,KiloWatts,KILOWATT,KILOWATTS 1000000 W,We,watt,watts,Watt,Watts,WATT,WATTS 1000000000 mW,milliwatt,milliwatts,MILLIWATT,MILLIWA...

  8. Property:InstalledCapacity | Open Energy Information

    Open Energy Info (EERE)

    1000 kW,kWe,KW,kilowatt,KiloWatt,KILOWATT,kilowatts,KiloWatts,KILOWATT,KILOWATTS 1000000 W,We,watt,watts,Watt,Watts,WATT,WATTS 1000000000 mW,milliwatt,milliwatts,MILLIWATT,MILLIWA...

  9. Limits on the thermoacoustic detectability of electric and magnetic charges

    SciTech Connect (OSTI)

    Akerlof, C.W.

    1982-09-01

    The energy loss is estimated for a slow magnetic monopole traveling through a conductor. The thermoacoustic signal derived from this process is compared to the acoustic phonon fluctuation pressure. The results show that single-monopole detectability is strongly limited by thermal noise. These calculations also imply severe limits for the detectability of charged-particle cascades.

  10. Performance limit analysis of a metallic fuel for Kalimer

    SciTech Connect (OSTI)

    Lee, Byoung Oon; Cheon, J.S.; Lee, C.B.

    2007-07-01

    A metallic fuel is being considered as the fuel for SFR in Korea. The metal fuel development for SFR in Korea started in 2007 in the areas of metal fuel fabrication, cladding materials and fuel performance evaluation. The MACSIS code for a metallic fuel has been developed as a steady-state performance computer code. Present study represents the preliminary parametric results for evaluating the design limits of the metal fuel for SFR in Korea. The operating limits were analyzed by the MACSIS code. The modules of the creep rupture strength for the Mod.HT9 and the barrier cladding were inserted. The strain limits and the CDF limit were analyzed for the HT9, and the Mod.HT9. To apply the concept of a barrier cladding, the burnup limit of the barrier cladding was analyzed. (authors)

  11. Investigation of density limit processes in DIII-D

    SciTech Connect (OSTI)

    Maingi, R.; Mahdavi, M.A.; Petrie, T.W.

    1999-02-01

    A series of experiments has been conducted in DIII-D to investigate density-limiting processes. The authors have studied divertor detachment and MARFEs on closed field lines and find semi-quantitative agreement with theoretical calculations of onset conditions. They have shown that the critical density for MARFE onset at low edge temperature scales as I{sub p}/a{sup 2}, i.e. similar to Greenwald scaling. They have also shown that the scaling of the critical separatrix density with heating power at partial detachment onset agrees with Borass` model. Both of these processes yield high edge density limits for reactors such as ITER. By using divertor pumping and pellet fueling they have avoided these and other processes and accessed densities > 1.5{times} Greenwald limit scaling with H-mode confinement, demonstrating that the Greenwald limit is not a fundamental limit on the core density.

  12. Investigating the Effects of Temperature

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

    Investigating the Effects of Temperature on Power Output Objective: Students will use concepts learned in class to explore the many variables that effect the efficiency of solar panels in regards to power output. Materials: * PV Array or Solar Panel * 2 Multimeter * Frozen Ice Packs * Low Power DC Bulb * Halogen Lamp (500 Watts) * 4 or 5 Alligator clip wires * Timer Investigative Question: How does the power output change as the temperature of the PV system changes. Procedure: 1) Attach the

  13. Optical limiting device and method of preparation thereof

    DOE Patents [OSTI]

    Wang, Hsing-Lin (Los Alamos, NM); Xu, Su (Santa Clara, CA); McBranch, Duncan W. (Santa Fe, NM)

    2003-01-01

    Optical limiting device and method of preparation thereof. The optical limiting device includes a transparent substrate and at least one homogeneous layer of an RSA material in polyvinylbutyral attached to the substrate. The device may be produced by preparing a solution of an RSA material, preferably a metallophthalocyanine complex, and a solution of polyvinylbutyral, and then mixing the two solutions together to remove air bubbles. The resulting solution is layered onto the substrate and the solvent is evaporated. The method can be used to produce a dual tandem optical limiting device.

  14. Limitations on area compression of beams from pierce guns

    SciTech Connect (OSTI)

    Yakovlev, V.P.; Nezhevenko, O.A. [Omega-P Inc., 202008 Yale Station, New Haven, Connecticut 06520-2008 (United States)

    1999-05-01

    An important limitation for rf sources such as klystrons and magnicons, designed for 10{close_quote}s of MW power outputs at cm-wavelengths, is the transverse electron beam size. Cathode current density limits require high beam area compressions to obtain small transverse beam areas for fixed currents. This paper discusses the limitations to high beam area compression, namely geometrical aberrations and thermal spread in transverse velocities. Compensation can oftentimes be introduced for aberrations, but thermal velocity spread presents a fundamental limitation. Examples where subtle compensation strategies were employed are discussed for three guns with 100 MW beam power, and area compressions greater than 2000:1. Two of these guns have already been built. A clear determination of effective cathode temperature has yet to be found experimentally, but possible means to measure it are discussed. {copyright} {ital 1999 American Institute of Physics.}

  15. On the density limit in the helicon plasma sources

    SciTech Connect (OSTI)

    Kotelnikov, Igor A.

    2014-12-15

    Existence of the density limit in the helicon plasma sources is revisited. The low- and high-frequency regimes of a helicon plasma source operation are distinguished. In the low-frequency regime with ?limit is deduced from the Golant-Stix criterion of the accessibility of the lower hybrid resonance. In the high-frequency case, ?>?(?{sub ci}?{sub ce}), an appropriate limit is given by the Shamrai-Taranov criterion. Both these criteria are closely related to the phenomenon of the coalescence of the helicon wave with the Trivelpiece-Gould mode. We draw a conclusion that the derived density limits are not currently achieved in existing devices, perhaps, because of high energy cost of gas ionization.

  16. Intensity limitations in compact H{sup minus} cyclotrons

    SciTech Connect (OSTI)

    Baartman, R.A.

    1995-12-31

    At TRIUMF, we have demonstrated 2.5 mA in a compact H{sup -} cyclotron. It is worthwhile to explore possibility of going to even higher intensity. In small cyclotrons, vertical focusing vanishes at the center. The space charge tune shift further reduces vertical focusing, thus determining an upper limit on instantaneous current. Limit on average current is of course also dependent upon phase acceptance, but this can be made quite large in an H{sup -} cyclotron. Longitudinal space charge on the first turn can reduce the phase acceptance as well. For finite ion source brightness, another limit comes from bunching efficiency in presence of space charge forces. We present methods of calculating and optimizing these limits. In particular, we show that it is possible to achieve 10mA in a 50 MeV compact H{sup -} cyclotron.

  17. Inherent limitations and current status of the unresolved resonance treatment

    SciTech Connect (OSTI)

    Hwang, R.N.

    1984-01-01

    The two general methods for representing the behavior of the unresolved resonances and the limitations of these methods are discussed. Possible solutions to the problem are considered. 17 references. (WHK)

  18. 5 CCR 1002-62 Colorado Regulations for Effluent Limitations ...

    Open Energy Info (EERE)

    search OpenEI Reference LibraryAdd to library Legal Document- RegulationRegulation: 5 CCR 1002-62 Colorado Regulations for Effluent LimitationsLegal Abstract Regulations...

  19. Limite Marinha A Estrutura de Pesquisa Climtica do Programa...

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

    de cerca de 1 a 2 km. Num ambiente marinho, as nuvens da camada limite filtram o sol passivamente mas tambm funcionam como sistemas inter- activos que influenciam e...

  20. Topics: Determining the Beta Limit - MST - UW Plasma Physics

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

    Determining the Beta Limit UW Madison Madison Symmetric Torus Topics: Determining the Beta Limit MST HomeGraduate Student InformationLinksTourControl and Auxiliary SystemsPhysics TopicsDeviceResearch MissionMST People mst logo CPLA Home Directory Publications Links Internal University of Wisconsin Physics Department Research funding includes support from: Department of Energy National Science Foundation One of the reasons improved confinement in MST can be described as "tokamak-like"

  1. (Expired) Nationwide Limited Public Interest Waiver for LED Lighting and

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

    HVAC Units: February 11, 2010 | Department of Energy (Expired) Nationwide Limited Public Interest Waiver for LED Lighting and HVAC Units: February 11, 2010 (Expired) Nationwide Limited Public Interest Waiver for LED Lighting and HVAC Units: February 11, 2010 PDF icon nationwide_nonavailability_waiver_02-11-2010 More Documents & Publications Nationwide Categorical Waiver Nationwide Nonavailability Waiver: February 11, 2010 (Please note, the waiver for LED traffic signals has been

  2. SHOCK EMERGENCE IN SUPERNOVAE: LIMITING CASES AND ACCURATE APPROXIMATIONS

    SciTech Connect (OSTI)

    Ro, Stephen; Matzner, Christopher D.

    2013-08-10

    We examine the dynamics of accelerating normal shocks in stratified planar atmospheres, providing accurate fitting formulae for the scaling index relating shock velocity to the initial density and for the post-shock acceleration factor as functions of the polytropic and adiabatic indices which parameterize the problem. In the limit of a uniform initial atmosphere, there are analytical formulae for these quantities. In the opposite limit of a very steep density gradient, the solutions match the outcome of shock acceleration in exponential atmospheres.

  3. Polymer Electrolyte Fuel Cell Lifetime Limitations: The Role of

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

    Electrocatalyst Degradation | Department of Energy Electrolyte Fuel Cell Lifetime Limitations: The Role of Electrocatalyst Degradation Polymer Electrolyte Fuel Cell Lifetime Limitations: The Role of Electrocatalyst Degradation Presented at the Department of Energy Fuel Cell Projects Kickoff Meeting, September 1 - October 1, 2009 PDF icon myers_kickoff.pdf More Documents & Publications Non-Platinum Bimetallic Cathode Electrocatalysts Testing Oxygen Reduction Reaction Activity with the

  4. Analytical Estimations for Thermal Crosstalk Retention and Scaling Limits

    Office of Scientific and Technical Information (OSTI)

    in Resistive Memory. (Journal Article) | SciTech Connect Analytical Estimations for Thermal Crosstalk Retention and Scaling Limits in Resistive Memory. Citation Details In-Document Search Title: Analytical Estimations for Thermal Crosstalk Retention and Scaling Limits in Resistive Memory. Abstract not provided. Authors: Lohn, Andrew ; Mickel, Patrick R. ; Marinella, Matthew Publication Date: 2014-04-01 OSTI Identifier: 1141816 Report Number(s): SAND2014-2997J 507562 DOE Contract Number:

  5. Checkpoint Compression: Its Limitations and Comparisons with other

    Office of Scientific and Technical Information (OSTI)

    Optimizations. (Conference) | SciTech Connect Limitations and Comparisons with other Optimizations. Citation Details In-Document Search Title: Checkpoint Compression: Its Limitations and Comparisons with other Optimizations. Abstract not provided. Authors: Ferreira, Kurt Brian ; Ibtesham, Dewan ; Arnold, Dorian Publication Date: 2013-11-01 OSTI Identifier: 1120837 Report Number(s): SAND2013-9997C 482778 DOE Contract Number: DE-AC04-94AL85000 Resource Type: Conference Resource Relation:

  6. Checkpoint Compression: Its Limits and a Comparison with other

    Office of Scientific and Technical Information (OSTI)

    Optimizations. (Conference) | SciTech Connect Limits and a Comparison with other Optimizations. Citation Details In-Document Search Title: Checkpoint Compression: Its Limits and a Comparison with other Optimizations. Abstract not provided. Authors: Ferreira, Kurt Brian ; Ibtesham, Dewan ; Arnold, Dorian Publication Date: 2013-05-01 OSTI Identifier: 1080332 Report Number(s): SAND2013-4325C 455901 DOE Contract Number: AC04-94AL85000 Resource Type: Conference Resource Relation: Conference: IEEE

  7. Comments on Department of Energy's Emergency Order To Resume Limited

    Energy Savers [EERE]

    Operation at Mirant's Potomac River Generating Station and Proposed Mirant Compliance Plan | Department of Energy on Department of Energy's Emergency Order To Resume Limited Operation at Mirant's Potomac River Generating Station and Proposed Mirant Compliance Plan Comments on Department of Energy's Emergency Order To Resume Limited Operation at Mirant's Potomac River Generating Station and Proposed Mirant Compliance Plan Docket No. EO-05-01: Riverkeeper, and the Anacostia Riverkeeper at

  8. Reliability and Design Strength Limit Calculations on Diesel Particulate

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

    Filters | Department of Energy and Design Strength Limit Calculations on Diesel Particulate Filters Reliability and Design Strength Limit Calculations on Diesel Particulate Filters 2004 Diesel Engine Emissions Reduction (DEER) Confererence Presentation: Corning PDF icon 2004_deer_webb.pdf More Documents & Publications Predicting Thermal Stress in Diesel Particulate Filters Environmental Effects on Power Electronic Devices Effect of Machining Procedures on the Strength of Ceramics for

  9. NREL: Jobs and Economic Development Impact (JEDI) Models - Limitations of

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

    JEDI Models Limitations of JEDI Models Results are an estimate, not a precise forecast. The Jobs and Economic Development Impact (JEDI) models are input-output based models, also appropriately called calculators or screening tools. As such, they share important limitations with all models based on input-output calculation methodologies. For the interested user, the Environmental Protection Agency recently published EPA Assessing the Multiple Benefits of Clean Energy: A Resource for States1,

  10. Experimental and Modelling Study of the Effect of Diffusional Limitations

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

    on the NH3 SCR Activity | Department of Energy Modelling Study of the Effect of Diffusional Limitations on the NH3 SCR Activity Experimental and Modelling Study of the Effect of Diffusional Limitations on the NH3 SCR Activity Simulations different feed conditions and temperature variations were compared to experimental data collected in validation runs at the monolith scale; made direct comparison of experimental data on the same catalyst in the two configurations (powder vs. monolith) PDF

  11. Use of Authorized Limits During Decontamination and Demolition Phase |

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

    Department of Energy Use of Authorized Limits During Decontamination and Demolition Phase Use of Authorized Limits During Decontamination and Demolition Phase Donald Dihel; Orville W. Cypret*; G. Vazquez; W. Alexander Williams Abstract: Protecting the public and the environment against undue risk from radiation associated with radiological activities conducted under the control of the Department of Energy (DOE) is the purpose of DOE environmental radiation protection programs. To meet this

  12. Adjustable direct current and pulsed circuit fault current limiter

    DOE Patents [OSTI]

    Boenig, Heinrich J.; Schillig, Josef B.

    2003-09-23

    A fault current limiting system for direct current circuits and for pulsed power circuit. In the circuits, a current source biases a diode that is in series with the circuits' transmission line. If fault current in a circuit exceeds current from the current source biasing the diode open, the diode will cease conducting and route the fault current through the current source and an inductor. This limits the rate of rise and the peak value of the fault current.

  13. An Experiment on the Limits of Quantum Electro-dynamics

    DOE R&D Accomplishments [OSTI]

    Barber, W. C.; Richter, B.; Panofsky, W. K. H.; O'Neill, G. K.; Gittelman, B.

    1959-06-01

    The limitations of previously performed or suggested electrodynamic cutoff experiments are reviewed, and an electron-electron scattering experiment to be performed with storage rings to investigate further the limits of the validity of quantum electrodynamics is described. The foreseen experimental problems are discussed, and the results of the associated calculations are given. The parameters and status of the equipment are summarized. (D.C.W.)

  14. Stainless steel 304 cladding mechanical properties and limitations during

    Office of Scientific and Technical Information (OSTI)

    steady state operation of U-ZrH TRIGA type fuel. (Conference) | SciTech Connect Stainless steel 304 cladding mechanical properties and limitations during steady state operation of U-ZrH TRIGA type fuel. Citation Details In-Document Search Title: Stainless steel 304 cladding mechanical properties and limitations during steady state operation of U-ZrH TRIGA type fuel. No abstract prepared. Authors: Coats, Richard Lee ; Dohner, Jeffrey Lynn ; Dahl, James J. ; Walker, Sharon Ann ; Greutman,

  15. Thermal island destabilization and the Greenwald limit (Journal Article) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Thermal island destabilization and the Greenwald limit Citation Details In-Document Search Title: Thermal island destabilization and the Greenwald limit Magnetic reconnection is ubiquitous in the magnetosphere, the solar corona, and in toroidal fusion research discharges. In a fusion device, a magnetic island saturates at a width which produces a minimum in the magnetic energy of the configuration. At saturation, the modified current density profile, a function of the flux in

  16. The Department of Energy's Limited English Proficiency Plan | Department of

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

    Energy The Department of Energy's Limited English Proficiency Plan The Department of Energy's Limited English Proficiency Plan The identification of reasonable steps to provide oral and written services in languages other than English is to be determined on a case-by-case basis through a balancing of four factors. Among the factors to be considered are the number or proportion of LEP persons in the eligible service population, the frequency with which LEP individuals come in contact with the

  17. Toroidal midplane neutral beam armor and plasma limiter

    DOE Patents [OSTI]

    Kugel, Henry W. (Somerset, NJ); Hand, Jr, Samuel W. (Hopewell Township, Mercer County, NJ); Ksayian, Haig (Titusville, NJ)

    1986-01-01

    For use in a tokamak fusion reactor having a midplane magnetic coil on the inner wall of an evacuated toriodal chamber within which a neutral beam heated, fusing plasma is magnetically confined, a neutral beam armor shield and plasma limiter is provided on the inner wall of the toroidal chamber to shield the midplane coil from neutral beam shine-thru and plasma deposition. The armor shield/plasma limiter forms a semicircular enclosure around the midplane coil with the outer surface of the armor shield/plasma limiter shaped to match, as closely as practical, the inner limiting magnetic flux surface of the toroidally confined, indented, bean-shaped plasma. The armor shield/plasma limiter includes a plurality of semicircular graphite plates each having a pair of coupled upper and lower sections with each plate positioned in intimate contact with an adjacent plate on each side thereof so as to form a closed, planar structure around the entire outer periphery of the circular midplane coil. The upper and lower plate sections are adapted for coupling to heat sensing thermocouples and to a circulating water conduit system for cooling the armor shield/plasma limiter.The inner center portion of each graphite plate is adapted to receive and enclose a section of a circular diagnostic magnetic flux loop so as to minimize the power from the plasma confinement chamber incident upon the flux loop.

  18. Operating limit evaluation for disposal of uranium enrichment plant wastes

    SciTech Connect (OSTI)

    Lee, D.W.; Kocher, D.C.; Wang, J.C.

    1996-02-01

    A proposed solid waste landfill at Paducah Gaseous Diffusion Plant (PGDP) will accept wastes generated during normal plant operations that are considered to be non-radioactive. However, nearly all solid waste from any source or facility contains small amounts of radioactive material, due to the presence in most materials of trace quantities of such naturally occurring radionuclides as uranium and thorium. This paper describes an evaluation of operating limits, which are protective of public health and the environment, that would allow waste materials containing small amounts of radioactive material to be sent to a new solid waste landfill at PGDP. The operating limits are expressed as limits on concentrations of radionuclides in waste materials that could be sent to the landfill based on a site-specific analysis of the performance of the facility. These limits are advantageous to PGDP and DOE for several reasons. Most importantly, substantial cost savings in the management of waste is achieved. In addition, certain liabilities that could result from shipment of wastes to a commercial off-site solid waste landfill are avoided. Finally, assurance that disposal operations at the PGDP landfill are protective of public health and the environment is provided by establishing verifiable operating limits for small amounts of radioactive material; rather than relying solely on administrative controls. The operating limit determined in this study has been presented to the Commonwealth of Kentucky and accepted as a condition to be attached to the operating permit for the solid waste landfill.

  19. New Stochastic Annual Limits on Intake for Selected Radionuclides

    SciTech Connect (OSTI)

    Carbaugh, Eugene H.

    2009-08-24

    Annual limits on intake (ALI) have historically been tabulated by the International Commission on Radiological Protection (e.g., ICRP 1979, 1961) and also by the Environmental Protection Agency (EPA 1988). These compilations have been rendered obsolete by more recent ICRP dosimetry methods, and, rather than provide new ALIs, the ICRP has opted instead to provide committed dose coefficients from which an ALI can be determined by a user for a specific set of conditions. The U.S. Department of Energy historically has referenced compilations of ALIs and has defined their method of calculation in its radiation protection regulation (10 CFDR 835), but has never provided a specific compilation. Under June 2007 amendments to 10 CFR 835, ALIs can be calculated by dividing an appropriate dose limit, either 5-rem (0.05 Sv) effective dose or 50 rem (0.5 Sv) equivalent dose to an individual organ or tissue, by an appropriate committed dose coefficient. When based on effective dose, the ALI is often referred to as a stochastic annual limit on intake (SALI), and when based on the individual organ or tissue equivalent limit, it has often been called a deterministic annual limit on intake (DALI).

  20. Limited-memory adaptive snapshot selection for proper orthogonal decomposition

    SciTech Connect (OSTI)

    Oxberry, Geoffrey M.; Kostova-Vassilevska, Tanya; Arrighi, Bill; Chand, Kyle

    2015-04-02

    Reduced order models are useful for accelerating simulations in many-query contexts, such as optimization, uncertainty quantification, and sensitivity analysis. However, offline training of reduced order models can have prohibitively expensive memory and floating-point operation costs in high-performance computing applications, where memory per core is limited. To overcome this limitation for proper orthogonal decomposition, we propose a novel adaptive selection method for snapshots in time that limits offline training costs by selecting snapshots according an error control mechanism similar to that found in adaptive time-stepping ordinary differential equation solvers. The error estimator used in this work is related to theory bounding the approximation error in time of proper orthogonal decomposition-based reduced order models, and memory usage is minimized by computing the singular value decomposition using a single-pass incremental algorithm. Results for a viscous Burgers test problem demonstrate convergence in the limit as the algorithm error tolerances go to zero; in this limit, the full order model is recovered to within discretization error. The resulting method can be used on supercomputers to generate proper orthogonal decomposition-based reduced order models, or as a subroutine within hyperreduction algorithms that require taking snapshots in time, or within greedy algorithms for sampling parameter space.

  1. Optical limiting effects in nanostructured silicon carbide thin films

    SciTech Connect (OSTI)

    Borshch, A A; Starkov, V N; Volkov, V I; Rudenko, V I; Boyarchuk, A Yu; Semenov, A V

    2013-12-31

    We present the results of experiments on the interaction of nanosecond laser radiation at 532 and 1064 nm with nanostructured silicon carbide thin films of different polytypes. We have found the effect of optical intensity limiting at both wavelengths. The intensity of optical limiting at ? = 532 nm (I{sub cl} ? 10{sup 6} W cm{sup -2}) is shown to be an order of magnitude less than that at ? = 1064 nm (I{sub cl} ? 10{sup 7} W cm{sup -2}). We discuss the nature of the nonlinearity, leading to the optical limiting effect. We have proposed a method for determining the amount of linear and two-photon absorption in material media. (nonlinear optical phenomena)

  2. NEW LIMITS ON GAMMA-RAY EMISSION FROM GALAXY CLUSTERS

    SciTech Connect (OSTI)

    Griffin, Rhiannon D.; Dai, Xinyu; Kochanek, Christopher S. E-mail: xdai@ou.edu

    2014-11-01

    Galaxy clusters are predicted to produce ?-rays through cosmic ray interactions and/or dark matter annihilation, potentially detectable by the Fermi Large Area Telescope (Fermi-LAT). We present a new, independent stacking analysis of Fermi-LAT photon count maps using the 78 richest nearby clusters (z < 0.12) from the Two Micron All Sky Survey cluster catalog. We obtain the lowest limit on the photon flux to date, 2.3 10{sup 11} photons cm{sup 2} s{sup 1} (95% confidence) per cluster in the 0.8-100 GeV band, which corresponds to a luminosity limit of 3.5 10{sup 44} photons s{sup 1}. We also constrain the emission limits in a range of narrower energy bands. Scaling to recent cosmic ray acceleration and ?-ray emission models, we find that cosmic rays represent a negligible contribution to the intra-cluster energy density and gas pressure.

  3. The Ginibre evolution in the large-N limit

    SciTech Connect (OSTI)

    Tribe, Roger Zaboronski, Oleg

    2014-06-15

    We analyse statistics of the real eigenvalues of gl(N, R)-valued Brownian motion (the Ginibre evolution) in the limit of large N. In particular, we calculate the limiting two-time correlation function of spin variables associated with real eigenvalues of the Ginibre evolution. We also show how the formalism of spin variables can be used to compute the fixed time correlation functions of real eigenvalues discovered originally by Forrester and Nagao [“Eigenvalue statistics of the real Ginibre ensemble,” Phys. Rev. Lett. 99(5), 050603 (2007)] and Borodin and Sinclair [“The Ginibre ensemble of real random matrices and its scaling limits,” Commun. Math. Phys. 291(1), 177–224 (2009)].

  4. The fundamental downscaling limit of field effect transistors

    SciTech Connect (OSTI)

    Mamaluy, Denis Gao, Xujiao

    2015-05-11

    We predict that within next 15 years a fundamental down-scaling limit for CMOS technology and other Field-Effect Transistors (FETs) will be reached. Specifically, we show that at room temperatures all FETs, irrespective of their channel material, will start experiencing unacceptable level of thermally induced errors around 5-nm gate lengths. These findings were confirmed by performing quantum mechanical transport simulations for a variety of 6-, 5-, and 4-nm gate length Si devices, optimized to satisfy high-performance logic specifications by ITRS. Different channel materials and wafer/channel orientations have also been studied; it is found that altering channel-source-drain materials achieves only insignificant increase in switching energy, which overall cannot sufficiently delay the approaching downscaling limit. Alternative possibilities are discussed to continue the increase of logic element densities for room temperature operation below the said limit.

  5. SULFATE SOLUBILITY LIMIT VERIFICATION FOR DWPF SLUDGE BATCH 7A

    SciTech Connect (OSTI)

    Billings, A.

    2011-04-19

    During processing at the Defense Waste Processing Facility (DWPF), high sulfate concentrations in the feed are a concern to DWPF as it can lead to the formation of a detrimental, sulfate-rich, molten salt phase on the surface of the glass melt pool. To avoid these issues, a sulfate concentration limit was implemented into the Product Composition Control System (PCCS). Related to SB7a frit development efforts, the Savannah River National Laboratory (SRNL) assessed the viability of using the current 0.6 wt % SO{sub 4}{sup 2-} limit set for SB6 (in glass) and the possibility of increasing the SO{sub 4}{sup 2-} solubility limit in PCCS to account for anticipated sulfur concentrations, targeted waste loadings, and inclusion of secondary streams (e.g., Actinide Removal Process (ARP)) with two recommended frits (Frit 418 and Frit 702) for SB7a processing. For a nominal SB7a blend with a 63 inch SB6 heel remaining in Tank 40 (projection SB7a-63), a 0.60 wt% SO{sub 4}{sup 2-} in glass limit was determined for waste loadings of 34 wt% up to 40 wt% with Frit 418 based on crucible melts with batched chemicals. SRNL also examined the inclusion of ARP for the same blending scenario (SB7a-63-ARP) with Frit 418 and at least a 0.6 wt% SO{sub 4}{sup 2-} level, and waste loadings of 34 wt% to 40 wt% were also acceptable. When a visible yellow and/or white sulfate salt layer was visible on the surface of any cooled glass, it was assumed to have surpassed the solubility limit of SO{sub 4}{sup 2-} for that particular composition. All of the glasses fabricated at these concentrations did not exhibit a sulfate rich salt layer on the surface of the glass melt and retained the majority of the batched SO{sub 4}{sup 2-}. At higher levels of SO{sub 4}{sup 2-} 'spiked' into the projected sludge compositions over the aforementioned interval of waste loadings, with Frit 418, low viscosity sulfur layers were observed on the surface of glass melts which confirm exceeding the solubility limit. The same sludge scenarios were also tested with Frit 702 and all glasses did not exhibit sulfur layers on the surfaces of the glass melts at spiking levels up to 0.80 wt% SO{sub 4}{sup 2-}. An ultimate SO{sub 4}{sup 2-} limit was not defined with Frit 702, but if projected SO{sub 4}{sup 2-} concentrations are expected to increase with the onset of SB7a processing, a higher limit is achievable with Frit 702 than is achievable with Frit 418. Given the anticipated concentration of SO{sub 4}{sup 2-} for SB7a, a SO{sub 4}{sup 2-} limit of 0.6 wt % SO{sub 4}{sup 2-} is recommended for processing using Frit 418. Once the confirmed SB7a composition is known and should a higher limit be needed, SRNL can re-evaluate the limit based on the actual composition and provide an updated recommendation. It has been observed that higher levels of SO{sub 4}{sup 2-} in glass can be retained with compositional changes to the frit, as was demonstrated by the glasses fabricated using Frit 702. SRNL also recommends the continuation of studies to define a more 'global' sulfate concentration limit to account for future sludge batch composition uncertainties.

  6. Plasmonic trace sensing below the photon shot noise limit

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

    Pooser, Raphael C.; Lawrie, Benjamin J.

    2015-12-09

    Plasmonic sensors are important detectors of biochemical trace compounds, but those that utilize optical readout are approaching their absolute limits of detection as defined by the Heisenberg uncertainty principle in both differential intensity and phase readout. However, the use of more general minimum uncertainty states in the form of squeezed light can push the noise floor in these sensors below the shot noise limit (SNL) in one analysis variable at the expense of another. Here, we demonstrate a quantum plasmonic sensor whose noise floor is reduced below the SNL in order to perform index of refraction measurements with sensitivities unobtainablemore » with classical plasmonic sensors. The increased signal-to-noise ratio can result in faster detection of analyte concentrations that were previously lost in the noise. As a result, these benefits are the hallmarks of a sensor exploiting quantum readout fields in order to manipulate the limits of the Heisenberg uncertainty principle.« less

  7. Testing of Liquid Lithium Limiters in CDX-U

    SciTech Connect (OSTI)

    R. Majeski; R. Kaita; M. Boaz; P. Efthimion; T. Gray; B. Jones; D. Hoffman; H. Kugel; J. Menard; T. Munsat; A. Post-Zwicker; V. Soukhanovskii; J. Spaleta; G. Taylor; J. Timberlake; R. Woolley; L. Zakharov; M. Finkenthal; D. Stutman; G. Antar; R. Doerner; S. Luckhardt; R. Seraydarian; R. Maingi; M. Maiorano; S. Smith; D. Rodgers

    2004-07-30

    Part of the development of liquid metals as a first wall or divertor for reactor applications must involve the investigation of plasma-liquid metal interactions in a functioning tokamak. Most of the interest in liquid-metal walls has focused on lithium. Experiments with lithium limiters have now been conducted in the Current Drive Experiment-Upgrade (CDX-U) device at the Princeton Plasma Physics Laboratory. Initial experiments used a liquid-lithium rail limiter (L3) built by the University of California at San Diego. Spectroscopic measurements showed some reduction of impurities in CDX-U plasmas with the L3, compared to discharges with a boron carbide limiter. While no reduction in recycling was observed with the L3, which had a plasma-wet area of approximately 40 cm2, subsequent experiments with a larger area fully toroidal lithium limiter demonstrated significant reductions in both recycling and in impurity levels. Two series of experiments with the toroidal limiter have now be en performed. In each series, the area of exposed, clean lithium was increased, until in the latest experiments the liquid-lithium plasma-facing area was increased to 2000 cm2. Under these conditions, the reduction in recycling required a factor of eight increase in gas fueling in order to maintain the plasma density. The loop voltage required to sustain the plasma current was reduced from 2 V to 0.5 V. This paper summarizes the technical preparations for lithium experiments and the conditioning required to prepare the lithium surface for plasma operations. The mechanical response of the liquid metal to induced currents, especially through contact with the plasma, is discussed. The effect of the lithium-filled toroidal limiter on plasma performance is also briefly described.

  8. INVESTIGATION ON THE FLAME EXTINCTION LIMIT OF FUEL BLENDS

    SciTech Connect (OSTI)

    Ahsan R. Choudhuri

    2005-02-01

    Lean flame extinction limits of binary fuel mixtures of methane (CH{sub 4}), propane (C{sub 3}H{sub 8}), and ethane (C{sub 2}H{sub 6}) were measured using a twin-flame counter-flow burner. Experiments were conducted to generate an extinction equivalence ratio vs. global stretch rate plot and an extrapolation method was used to calculate the equivalence ratio corresponding to an experimentally unattainable zero-stretch condition. The foregoing gases were selected because they are the primary constitutes of natural gas, which is the primary focus of the present study. To validate the experimental setup and methodology, the flame extinction limit of pure fuels at zero stretch conditions were also estimated and compared with published values. The lean flame extinction limits of methane (f{sub ext} = 4.6%) and propane (f{sub ext} = 2.25%) flames measured in the present study agreed with the values reported in the literature. It was observed that the flame extinction limit of fuel blends have a polynomial relation with the concentration of component fuels in the mixture. This behavior contradicts with the commonly used linear Le Chatelier's approximation. The experimentally determined polynomial relations between the flame extinction limits of fuel blends (i.e. methane-propane and methane-ethane) and methane concentration are as follows: (1) Methane-Propane--%f{sub ext} = (1.05 x 10{sup -9}) f{sup 5}-(1.3644 x 10{sup -7}) f{sup 4}+(6.40299 x 10{sup -6}) f{sup 3}-(1.2108459 x 10{sup -4}) f{sup 2}+(2.87305329 x 10{sup -3}) f+2.2483; (2) Methane-Ethane--%f{sub ext} = (2.1 x 10{sup -9})f{sup 5}-(3.5752 x 10{sup -7}) f{sup 4}+(2.095425 x 10{sup -5}) f{sup 3}-(5.037353 x 10{sup -4}) f{sup 2} + 6.08980409 f + 2.8923. Where f{sub ext} is the extinction limits of methane-propane and methane-ethane fuel blends, and f is the concentration (% volume) of methane in the fuel mixture. The relations were obtained by fitting fifth order curve (polynomial regression) to experimentally measured extinction limits at different mixture conditions. To extend the study to a commercial fuel, the flame extinction limit for Birmingham natural gas (a blend of 95% methane, 5% ethane and 5% nitrogen) was experimentally determined and was found to be 3.62% fuel in the air-fuel mixture.

  9. Final Report Limited Soil Investigation of Project Chariot Test Holes

    Office of Legacy Management (LM)

    Limited Soil Investigation of Project Chariot Test Holes Cape Thompson, Alaska December 2010 Prepared for U.S. Department of Energy and U.S. Army Corps of Engineers, Alaska District Post Office Box 6898 Elmendorf AFB, Alaska 99506-6898 Contract W911KB-08-D-0003 Task Order 12, Mod 001 Prepared by Fairbanks Environmental Services 3538 International Street Fairbanks, Alaska 99701 (907) 452-1006 FES Project No. 5012-06 Final Report Limited Soil Investigation of Project Chariot Test Holes, Cape

  10. ARM: Surface Radiation Measurement Quality Control testing, including climatologically configurable limits

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

    Yan Shi; Laura Riihimaki

    1994-01-07

    Surface Radiation Measurement Quality Control testing, including climatologically configurable limits

  11. The limit of strength and toughness of steel

    SciTech Connect (OSTI)

    Guo, Zhen

    2001-12-17

    The ideal structural steel combines high strength with high fracture toughness. This dissertation discusses the governing principles of strength and toughness, along with the approaches that can be used to improve these properties and the inherent limits to how strong and tough a steel can be.

  12. Fault current limiter with shield and adjacent cores

    DOE Patents [OSTI]

    Darmann, Francis Anthony; Moriconi, Franco; Hodge, Eoin Patrick

    2013-10-22

    In a fault current limiter (FCL) of a saturated core type having at least one coil wound around a high permeability material, a method of suppressing the time derivative of the fault current at the zero current point includes the following step: utilizing an electromagnetic screen or shield around the AC coil to suppress the time derivative current levels during zero current conditions.

  13. Fault current limiter and alternating current circuit breaker

    DOE Patents [OSTI]

    Boenig, H.J.

    1998-03-10

    A solid-state circuit breaker and current limiter are disclosed for a load served by an alternating current source having a source impedance, the solid-state circuit breaker and current limiter comprising a thyristor bridge interposed between the alternating current source and the load, the thyristor bridge having four thyristor legs and four nodes, with a first node connected to the alternating current source, and a second node connected to the load. A coil is connected from a third node to a fourth node, the coil having an impedance of a value calculated to limit the current flowing therethrough to a predetermined value. Control means are connected to the thyristor legs for limiting the alternating current flow to the load under fault conditions to a predetermined level, and for gating the thyristor bridge under fault conditions to quickly reduce alternating current flowing therethrough to zero and thereafter to maintain the thyristor bridge in an electrically open condition preventing the alternating current from flowing therethrough for a predetermined period of time. 9 figs.

  14. High voltage fault current limiter having immersed phase coils

    DOE Patents [OSTI]

    Darmann, Francis Anthony

    2014-04-22

    A fault current limiter including: a ferromagnetic circuit formed from a ferromagnetic material and including at least a first limb, and a second limb; a saturation mechanism surrounding a limb for magnetically saturating the ferromagnetic material; a phase coil wound around a second limb; a dielectric fluid surrounding the phase coil; a gaseous atmosphere surrounding the saturation mechanism.

  15. Fault current limiter and alternating current circuit breaker

    DOE Patents [OSTI]

    Boenig, Heinrich J. (Los Alamos, NM)

    1998-01-01

    A solid-state circuit breaker and current limiter for a load served by an alternating current source having a source impedance, the solid-state circuit breaker and current limiter comprising a thyristor bridge interposed between the alternating current source and the load, the thyristor bridge having four thyristor legs and four nodes, with a first node connected to the alternating current source, and a second node connected to the load. A coil is connected from a third node to a fourth node, the coil having an impedance of a value calculated to limit the current flowing therethrough to a predetermined value. Control means are connected to the thyristor legs for limiting the alternating current flow to the load under fault conditions to a predetermined level, and for gating the thyristor bridge under fault conditions to quickly reduce alternating current flowing therethrough to zero and thereafter to maintain the thyristor bridge in an electrically open condition preventing the alternating current from flowing therethrough for a predetermined period of time.

  16. Global limits and interference patterns in dark matter direct detection

    SciTech Connect (OSTI)

    Catena, Riccardo; Gondolo, Paolo

    2015-08-13

    We compare the general effective theory of one-body dark matter nucleon interactions to current direct detection experiments in a global multidimensional statistical analysis. We derive exclusion limits on the 28 isoscalar and isovector coupling constants of the theory, and show that current data place interesting constraints on dark matter-nucleon interaction operators usually neglected in this context. We characterize the interference patterns that can arise in dark matter direct detection from pairs of dark matter-nucleon interaction operators, or from isoscalar and isovector components of the same operator. We find that commonly neglected destructive interference effects weaken standard direct detection exclusion limits by up to one order of magnitude in the coupling constants.

  17. Anisotropic charged impurity-limited carrier mobility in monolayer phosphorene

    SciTech Connect (OSTI)

    Ong, Zhun-Yong; Zhang, Gang; Zhang, Yong Wei

    2014-12-07

    The room temperature carrier mobility in atomically thin 2D materials is usually far below the intrinsic limit imposed by phonon scattering as a result of scattering by remote charged impurities in its environment. We simulate the charged impurity-limited carrier mobility ? in bare and encapsulated monolayer phosphorene. We find a significant temperature dependence in the carrier mobilities (? ? T{sup ??}) that results from the temperature variability of the charge screening and varies with the crystal orientation. The anisotropy in the effective mass leads to an anisotropic carrier mobility, with the mobility in the armchair direction about one order of magnitude larger than in the zigzag direction. In particular, this mobility anisotropy is enhanced at low temperatures and high carrier densities. Under encapsulation with a high-? overlayer, the mobility increases by up to an order of magnitude although its temperature dependence and its anisotropy are reduced.

  18. Homogenization limit for a multiband effective mass model in heterostructures

    SciTech Connect (OSTI)

    Morandi, O.

    2014-06-15

    We study the homogenization limit of a multiband model that describes the quantum mechanical motion of an electron in a quasi-periodic crystal. In this approach, the distance among the atoms that constitute the material (lattice parameter) is considered a small quantity. Our model include the description of materials with variable chemical composition, intergrowth compounds, and heterostructures. We derive the effective multiband evolution system in the framework of the kp approach. We study the well posedness of the mathematical problem. We compare the effective mass model with the standard kp models for uniform and non-uniforms crystals. We show that in the limit of vanishing lattice parameter, the particle density obtained by the effective mass model, converges to the exact probability density of the particle.

  19. Electromagnetic field limits set by the V-Curve.

    SciTech Connect (OSTI)

    Warne, Larry Kevin; Jorgenson, Roy Eberhardt; Hudson, Howard Gerald

    2014-07-01

    When emitters of electromagnetic energy are operated in the vicinity of sensitive components, the electric field at the component location must be kept below a certain level in order to prevent the component from being damaged, or in the case of electro-explosive devices, initiating. The V-Curve is a convenient way to set the electric field limit because it requires minimal information about the problem configuration. In this report we will discuss the basis for the V-Curve. We also consider deviations from the original V-Curve resulting from inductive versus capacitive antennas, increases in directivity gain for long antennas, decreases in input impedance when operating in a bounded region, and mismatches dictated by transmission line losses. In addition, we consider mitigating effects resulting from limited antenna sizes.

  20. Correlation and image compression for limited-bandwidth CCD.

    SciTech Connect (OSTI)

    Thompson, Douglas G.

    2005-07-01

    As radars move to Unmanned Aerial Vehicles with limited-bandwidth data downlinks, the amount of data stored and transmitted with each image becomes more significant. This document gives the results of a study to determine the effect of lossy compression in the image magnitude and phase on Coherent Change Detection (CCD). We examine 44 lossy compression types, plus lossless zlib compression, and test each compression method with over 600 CCD image pairs. We also derive theoretical predictions for the correlation for most of these compression schemes, which compare favorably with the experimental results. We recommend image transmission formats for limited-bandwidth programs having various requirements for CCD, including programs which cannot allow performance degradation and those which have stricter bandwidth requirements at the expense of CCD performance.

  1. Dark matter limits froma 15 kg windowless bubble chamber

    SciTech Connect (OSTI)

    Szydagis, Matthew Mark; /Chicago U.

    2010-12-01

    The COUPP collaboration has successfully used bubble chambers, a technology previously applied only to high-energy physics experiments, as direct dark matter detectors. It has produced the world's most stringent spin-dependent WIMP limits, and increasingly competitive spin-independent limits. These limits were achieved by capitalizing on an intrinsic rejection of the gamma background that all other direct detection experiments must address through high-density shielding and empirically-determined data cuts. The history of COUPP, including its earliest prototypes and latest results, is briefly discussed in this thesis. The feasibility of a new, windowless bubble chamber concept simpler and more inexpensive in design is discussed here as well. The dark matter limits achieved with a 15 kg windowless chamber, larger than any previous COUPP chamber (2 kg, 4 kg), are presented. Evidence of the greater radiopurity of synthetic quartz compared to natural is presented using the data from this 15 kg device, the first chamber to be made from synthetic quartz. The effective reconstruction of the three-dimensional positions of bubbles in a highly distorted optical field, with ninety-degree bottom lighting similar to cloud chamber lighting, is demonstrated. Another innovation described in this thesis is the use of the sound produced by bubbles recorded by an array of piezoelectric sensors as the primary means of bubble detection. In other COUPP chambers, cameras have been used as the primary trigger. Previous work on bubble acoustic signature differentiation using piezos is built upon in order to further demonstrate the ability to discriminate between alpha- and neutron-induced events.

  2. Thermal Cooling Limits of Sbotaged Spent Fuel Pools

    SciTech Connect (OSTI)

    Dr. Thomas G. Hughes; Dr. Thomas F. Lin

    2010-09-10

    To develop the understanding and predictive measures of the post loss of water inventory hazardous conditions as a result of the natural and/or terrorist acts to the spent fuel pool of a nuclear plant. This includes the thermal cooling limits to the spent fuel assembly (before the onset of the zircaloy ignition and combustion), and the ignition, combustion, and the subsequent propagation of zircaloy fire from one fuel assembly to others

  3. Development of Authorized Limits for Portsmouth Oil Inventory Disposition

    Office of Environmental Management (EM)

    safety  performance  cleanup  closure M E Environmental Management Development of Authorized Limits for Portsmouth Oil Inventory Disposition September 12, 2012 By Don Dihel and Dan Mosley Portsmouth/Paducah Project Office safety  performance  cleanup  closure M E Environmental Management PORTS Oil Disposition Problem in Late 2007 * Need to the dispose of approximately 2.5 million pounds or 350,000 gallons of lubricating oils contained in storage tanks and associated lines and

  4. LIMIT ON THE MUON NEUTRINO MAGNETIC MOMENT AND A MEASUREMENT

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

    LIMIT ON THE MUON NEUTRINO MAGNETIC MOMENT AND A MEASUREMENT OF THE CCPIP TO CCQE CROSS SECTION RATIO A Dissertation Submitted to the Graduate Faculty of the Louisiana State University and Agricultural and Mechanical College in partial fulfillment of the requirements for the degree of Doctor of Philosophy in The Department of Physics And Astronomy by Serge Ouedraogo B.S. in Physics, University of Arkansas at Little Rock, 2001 M.S., Louisiana State University, 2004 December 2008 In loving memory

  5. Limiting Factors for Convective Cloud Top Height in the Tropics

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

    Limiting Factors for Convective Cloud Top Height in the Tropics M. P. Jensen and A. D. Del Genio National Aeronautics and Space Administration Goddard Institute for Space Studies Columbia University New York, New York Introduction Populations of tropical convective clouds are mainly comprised of three types: shallow trade cumulus, mid-level cumulus congestus and deep convective clouds (Johnson et al. 1999). Each of these cloud types has different impacts on the local radiation and water budgets.

  6. Model Captures How Nitrogen Limitation Affects Hydrological Processes |

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

    U.S. DOE Office of Science (SC) Model Captures How Nitrogen Limitation Affects Hydrological Processes Biological and Environmental Research (BER) BER Home About Research Facilities Science Highlights Searchable Archive of BER Highlights External link Benefits of BER Funding Opportunities Biological & Environmental Research Advisory Committee (BERAC) Community Resources Contact Information Biological and Environmental Research U.S. Department of Energy SC-23/Germantown Building 1000

  7. Privacy Act Fees and Time Limits | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Fees and Time Limits | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Countering Nuclear Terrorism About Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Library Bios Congressional Testimony Fact Sheets Newsletters Press Releases Photo Gallery Jobs Apply for Our Jobs Our Jobs Working at

  8. Limited Personal Use of Government Office Equipment including Information Technology

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2005-01-07

    The Order establishes requirements and assigns responsibilities for employees' limited personal use of Government resources (office equipment and other resources including information technology) within DOE, including NNSA. The Order is required to provide guidance on appropriate and inappropriate uses of Government resources. This Order was certified 04/23/2009 as accurate and continues to be relevant and appropriate for use by the Department. Certified 4-23-09. No cancellation.

  9. Toroidal midplane neutral beam armor and plasma limiter

    DOE Patents [OSTI]

    Kugel, H.W.; Hand, S.W. Jr.; Ksayian, H.

    1985-05-31

    This invention contemplates an armor shield/plasma limiter positioned upon the inner wall of a toroidal vacuum chamber within which is magnetically confined an energetic plasma in a tokamak nuclear fusion reactor. The armor shield/plasma limiter is thus of a general semi-toroidal shape and is comprised of a plurality of adjacent graphite plates positioned immediately adjacent to each other so as to form a continuous ring upon and around the toroidal chamber's inner wall and the reactor's midplane coil. Each plate has a generally semi-circular outer circumference and a recessed inner portion and is comprised of upper and lower half sections positioned immediately adjacent to one another along the midplane of the plate. With the upper and lower half sections thus joined, a channel or duct is provided within the midplane of the plate in which a magnetic flux loop is positioned. The magnetic flux loop is thus positioned immediately adjacent to the fusing toroidal plasma and serves as a diagnostic sensor with the armor shield/plasma limiter minimizing the amount of power from the energetic plasma as well as from the neutral particle beams heating the plasma incident upon the flux loop.

  10. Combined upper limit for SM Higgs at the Tevatron

    SciTech Connect (OSTI)

    Penning, Bjorn; /Fermilab

    2009-01-01

    We combine results from CDF and D0 on direct searches for a standard model (SM) Higgs boson (H) in p{bar p} collisions at the Fermilab Tevatron at {radical}s = 1.96 TeV. Compared to the previous Higgs Tevatron combination, more data and new channels (WH {yields} {tau}{nu}b{bar b}, VH {yields} {tau}{tau}b{bar b}/jj{tau}{tau}, VH {yields} jjb{bar b}, t{bar t}H {yields} t{bar t}b{bar b}) have been added. Most previously used channels have been reanalyzed to gain sensitivity. We use the latest parton distribution functions and gg {yields} H theoretical cross sections when comparing our limits to the SM predictions. With 2.0-3.6 fb{sup -1} of data analyzed at CDF, and 0.9-4.2 fb{sup -1} at D0, the 95%C.L. upper limits on Higgs boson production are a factor of 2.5 (0.86) times the SM cross section for a Higgs boson mass of m{sub H} = 115 (165) GeV/c{sup 2}. Based on simulation, the corresponding median expected upper limits are 2.4 (1.1). The mass range excluded at 95% C.L. for a SM Higgs has been extended to 160 < m{sub H} < 170 GeV/c{sup 2}.

  11. Watt-Sun: A Multi-Scale, Multi-Model, Machine-Learning Solar...

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

    learning, and cloud modeling integrated in a universal platform with an open architecture. ... INNOVATIONS IBM sky cameras.jpg The goal of the project is the development and ...

  12. The Kill-a-Watt Competition at University of Central Florida

    ScienceCinema (OSTI)

    Margaret Lo

    2010-09-01

    At the University of Central Florida, students have taken it upon themselves to create a culture of energy efficiency. Each year, different dorm buildings compete to see who can save the most. In 2009, the school saw a total savings of $27,000. As of March 2010, they've saved over $24,000 this year alone.

  13. Is the hourly data from the NREL PV Watts program adjusted for...

    Open Energy Info (EERE)

    it is stated, "No adjustments are made for leap years or daylight savings time." Hope this helps. Pgray on 1 July, 2014 - 07:04 Points: 0 Thank you. I appreciate the help....

  14. Lead Test Assembly Irradiation and Analysis Watts Bar Nuclear Plant, Tennessee and Hanford Site, Richland, Washington

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts associated with the U.S. Department of Energy proposed action to conduct a lead test assembly program to confirm the viability of using a commercial...

  15. The Kill-a-Watt Competition at University of Central Florida

    Broader source: Energy.gov [DOE]

    At the University of Central Florida, students have taken it upon themselves to create a culture of energy efficiency. Each year, different dorm buildings compete to see who can save the most. In...

  16. The LSST Camera 500 watt -130 degC Mixed Refrigerant Cooling System

    SciTech Connect (OSTI)

    Bowden, Gordon B.; Langton, Brian J.; Little, William A.; Powers, Jacob R; Schindler, Rafe H.; Spektor, Sam; /MMR-Technologies, Mountain View, CA

    2014-05-28

    The LSST Camera has a higher cryogenic heat load than previous CCD telescope cameras due to its large size (634 mm diameter focal plane, 3.2 Giga pixels) and its close coupled front-end electronics operating at low temperature inside the cryostat. Various refrigeration technologies are considered for this telescope/camera environment. MMR-Technology’s Mixed Refrigerant technology was chosen. A collaboration with that company was started in 2009. The system, based on a cluster of Joule-Thomson refrigerators running a special blend of mixed refrigerants is described. Both the advantages and problems of applying this technology to telescope camera refrigeration are discussed. Test results from a prototype refrigerator running in a realistic telescope configuration are reported. Current and future stages of the development program are described. (auth)

  17. AVTA: GE Energy WattStation AC Level 2 Charging System Testing...

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

    on dynamometers, closed test tracks, and on-the-road. These results provide benchmark data that researchers can use to develop technology models and guide future research...

  18. The Kill-a-Watt Competition at University of Central Florida

    ScienceCinema (OSTI)

    Castro, Chris; Lo, Margaret; Norvell, David; Coelho, Keith; Hitt, John

    2013-05-29

    At the University of Central Florida, students have taken it upon themselves to create a culture of energy efficiency. Each year, different dorm buildings compete to see who can save the most. In 2009, the school saw a total savings of $27,000. As of March 2010, they've saved over $24,000 this year alone. Hear more stories about energy efficiency and renewable energy at Energy Empowers: http://www.eereblogs.energy.gov/energyempowers/page/Home-Page.aspx

  19. Watch the Watts: Tips for Buying a New Television | Department of Energy

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

    Jeannie Saur Senior Communicator, National Renewable Energy Laboratory Buying a new television in a complex and feature-rich market can be a daunting experience. Sure there are lots of great choices with stunning picture quality and amazing features. And with so much competition, TV prices have fallen dramatically from even a year ago. But when my 1990-era television finally died, I was overwhelmed with choices for a flat screen TV. There are plasmas, liquid crystal displays (LCDs), and

  20. Safety assessment of historical masonry churches based on pre-assigned kinematic limit analysis, FE limit and pushover analyses

    SciTech Connect (OSTI)

    Milani, Gabriele Valente, Marco

    2014-10-06

    This study presents some results of a comprehensive numerical analysis on three masonry churches damaged by the recent Emilia-Romagna (Italy) seismic events occurred in May 2012. The numerical study comprises: (a) pushover analyses conducted with a commercial code, standard nonlinear material models and two different horizontal load distributions; (b) FE kinematic limit analyses performed using a non-commercial software based on a preliminary homogenization of the masonry materials and a subsequent limit analysis with triangular elements and interfaces; (c) kinematic limit analyses conducted in agreement with the Italian code and based on the a-priori assumption of preassigned failure mechanisms, where the masonry material is considered unable to withstand tensile stresses. All models are capable of giving information on the active failure mechanism and the base shear at failure, which, if properly made non-dimensional with the weight of the structure, gives also an indication of the horizontal peak ground acceleration causing the collapse of the church. The results obtained from all three models indicate that the collapse is usually due to the activation of partial mechanisms (apse, faade, lateral walls, etc.). Moreover the horizontal peak ground acceleration associated to the collapse is largely lower than that required in that seismic zone by the Italian code for ordinary buildings. These outcomes highlight that structural upgrading interventions would be extremely beneficial for the considerable reduction of the seismic vulnerability of such kind of historical structures.

  1. Torque limit of PM motors for field-weakening region operation

    DOE Patents [OSTI]

    Royak, Semyon (Beachwood, OH); Harbaugh, Mark M. (Richfield, OH)

    2012-02-14

    The invention includes a motor controller and technique for controlling a permanent magnet motor. In accordance with one aspect of the present technique, a permanent magnet motor is controlled by receiving a torque command, determining a physical torque limit based on a stator frequency, determining a theoretical torque limit based on a maximum available voltage and motor inductance ratio, and limiting the torque command to the smaller of the physical torque limit and the theoretical torque limit. Receiving the torque command may include normalizing the torque command to obtain a normalized torque command, determining the physical torque limit may include determining a normalized physical torque limit, determining a theoretical torque limit may include determining a normalized theoretical torque limit, and limiting the torque command may include limiting the normalized torque command to the smaller of the normalized physical torque limit and the normalized theoretical torque limit.

  2. Detailed balance limit of power conversion efficiency for organic photovoltaics

    SciTech Connect (OSTI)

    Seki, Kazuhiko; Furube, Akihiro; Yoshida, Yuji

    2013-12-16

    A fundamental difference between inorganic photovoltaic (IPV) and organic photovoltaic (OPV) cells is that charges are generated at the interface in OPV cells, while free charges can be generated in the bulk in IPV cells. In OPV cells, charge generation involves intrinsic energy losses to dissociate excitons at the interface between the donor and acceptor. By taking into account the energy losses, we show the theoretical limits of the power conversion efficiency set by radiative recombination of the carriers on the basis of the detailed balance relation between radiation from the cell and black-body radiation.

  3. A recipe for the construction of confidence limits

    SciTech Connect (OSTI)

    Iain A Bertram et al.

    2000-04-12

    In this note, the authors present the recipe recommended by the Search Limits Committee for the construction of confidence intervals for the use of D0 collaboration. In another note, currently in preparation, they present the rationale for this recipe, a critique of the current literature on this topic, and several examples of the use of the method. This note is intended to fill the need of the collaboration to have a reference available until the more complete note is finished. Section 2 introduces the notation used in this note, and Section 3 contains the suggested recipe.

  4. The Penetrant System Monitoring (PSM) panel: Its use and limitations

    SciTech Connect (OSTI)

    Robinson, S.J. [Sherwin Inc., South Gate, CA (United States)

    1996-12-31

    In the last several years, the Penetrant System Monitoring (PSM) panel has been increasingly used for purposes for which it was never intended. Intended originally for use by penetrant system operators, the PSM panel is increasingly being used by material control departments and by process engineering departments. This paper`s purpose is to describe and give guidance concerning the proper use and maintenance of PSM panels. It recounts the evolution of penetrant system test panels, and compares how the different types of panels are made. It discusses the limitations of the PSM panel as used by the material control department, the process engineering department, and the production line.

  5. A LIMITED LIABILITY PARTNERSHIP 1050 Thomas Jefferson Street, NW

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

    A LIMITED LIABILITY PARTNERSHIP 1050 Thomas Jefferson Street, NW Seventh Floor Washington, DC 20007 (202) 298-1800 Phone (202) 338-2416 Fax MEMORANDUM TO: DOE Office of General Counsel FROM: Doug Smith DATE: August 29, 2013 RE: Record of Communication Concerning Ceiling Fan and Ceiling Fan Light Kit Framework Document-Docket No. EERE-2012-BT-STD-0045 This memo provides an overview of communications made to DOE staff on the subject of possible changes to standards and test procedures for ceiling

  6. Varying properties along lengths of temperature limited heaters

    DOE Patents [OSTI]

    Vinegar, Harold J. (Bellaire, TX); Xie, Xueying (Houston, TX); Miller, David Scott (Katy, TX); Ginestra, Jean Charles (Richmond, TX)

    2011-07-26

    A system for heating a subsurface formation is described. The system includes an elongated heater in an opening in the formation. The elongated heater includes two or more portions along the length of the heater that have different power outputs. At least one portion of the elongated heater includes at least one temperature limited portion with at least one selected temperature at which the portion provides a reduced heat output. The heater is configured to provide heat to the formation with the different power outputs. The heater is configured so that the heater heats one or more portions of the formation at one or more selected heating rates.

  7. New Limit on Time-Reversal Violation in Beta Decay

    SciTech Connect (OSTI)

    Mumm, H. P.; Chupp, T. E.; Cooper, R. L.; Coulter, K. P.; Freedman, S. J.; Fujikawa, B. K.; Garcia, A.; Jones, G. L.; Nico, J. S.; Thompson, A. K.; Trull, C. A.; Wietfeldt, F. E.; Wilkerson, J. F.

    2011-09-02

    We report the results of an improved determination of the triple correlation DP{center_dot}(p{sub e}xp{sub v}) that can be used to limit possible time-reversal invariance in the beta decay of polarized neutrons and constrain extensions to the standard model. Our result is D=[-0.96{+-}1.89(stat){+-}1.01(sys)]x10{sup -4}. The corresponding phase between g{sub A} and g{sub V} is {phi}{sub AV}=180.013 deg. {+-}0.028 deg. (68% confidence level). This result represents the most sensitive measurement of D in nuclear {beta} decay.

  8. Other Contracting Authority NNSA ORGANIZATION HCA LIMIT PHONE NUMBER

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

    Other Contracting Authority NNSA ORGANIZATION HCA LIMIT PHONE NUMBER NNSA HQ, NA-63, Deputy Director, Office of Acquisition and Supply Management Barbara H. Stearrett > $25M 202-586-7439 NNSA Service Center, Associate Director, Office of Business Services, Albuquerque, NM Donald J. Garcia < or equal to $25M 505-845-5878 Site offices do not have any HCA authority. NNSA SITE OFFICE CO NAME PHONE M&O CONTRACTOR NAME Bettis/Knolls Atomic Power Laboratory Mark Dickinson 202-781-6237 Bechtel

  9. Special Analysis: Revision of Saltstone Vault 4 Disposal Limits (U)

    SciTech Connect (OSTI)

    Cook, J

    2005-05-26

    New disposal limits have been computed for Vault 4 of the Saltstone Disposal Facility based on several revisions to the models in the existing Performance Assessment and the Special Analysis issued in 2002. The most important changes are the use of a more rigorous groundwater flow and transport model, and consideration of radon emanation. Other revisions include refinement of the aquifer mesh to more accurately model the footprint of the vault, a new plutonium chemistry model accounting for the different transport properties of oxidation states III/IV and V/VI, use of variable infiltration rates to simulate degradation of the closure system, explicit calculation of gaseous releases and consideration of the effects of settlement and seismic activity on the vault structure. The disposal limits have been compared with the projected total inventory expected to be disposed in Vault 4. The resulting sum-of-fractions of the 1000-year disposal limits is 0.2, which indicates that the performance objectives and requirements of DOE 435.1 will not be exceeded. This SA has not altered the conceptual model (i.e., migration of radionuclides from the Saltstone waste form and Vault 4 to the environment via the processes of diffusion and advection) of the Saltstone PA (MMES 1992) nor has it altered the conclusions of the PA (i.e., disposal of the proposed waste in the SDF will meet DOE performance measures). Thus a PA revision is not required and this SA serves to update the disposal limits for Vault 4. In addition, projected doses have been calculated for comparison with the performance objectives laid out in 10 CFR 61. These doses are 0.05 mrem/year to a member of the public and 21.5 mrem/year to an inadvertent intruder in the resident scenario over a 10,000-year time-frame, which demonstrates that the 10 CFR 61 performance objectives will not be exceeded. This SA supplements the Saltstone PA and supersedes the two previous SAs (Cook et al. 2002; Cook and Kaplan 2003).

  10. Temporary Emergency Exposure Limits for Chemicals: Methods and Practice

    Energy Savers [EERE]

    DOE-HDBK-1046-2008 August 2008 DOE HANDBOOK TEMPORARY EMERGENCY EXPOSURE LIMITS FOR CHEMICALS: METHODS AND PRACTICE U.S. Department of Energy AREA EMER Washington, D.C. 20585 DOE-HDBK-1046-2008 ii DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. DOE-HDBK-1046-2008 iii Available on the Department of Energy Technical Standards Program Web site at http://www.hss.energy.gov/nuclearsafety/techstds/ DOE-HDBK-1046-2008 iv FOREWORD In 2005, the Office of Emergency

  11. Method and apparatus to trigger superconductors in current limiting devices

    DOE Patents [OSTI]

    Yuan, Xing; Hazelton, Drew Willard; Walker, Michael Stephen

    2004-10-26

    A method and apparatus for magnetically triggering a superconductor in a superconducting fault current limiter to transition from a superconducting state to a resistive state. The triggering is achieved by employing current-carrying trigger coil or foil on either or both the inner diameter and outer diameter of a superconductor. The current-carrying coil or foil generates a magnetic field with sufficient strength and the superconductor is disposed within essentially uniform magnetic field region. For superconductor in a tubular-configured form, an additional magnetic field can be generated by placing current-carrying wire or foil inside the tube and along the center axial line.

  12. Collective Effects in a Diffraction Limited Storage Ring

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

    Nagaoka, Ryutaro; Bane, Karl L.F.

    2015-10-20

    Our paper gives an overview of collective effects that are likely to appear and possibly limit the performance in a diffraction-limited storage ring (DLSR) that stores a high-intensity ultra-low-emittance beam. Beam instabilities and other intensity-dependent effects that may significantly impact the machine performance are covered. The latter include beam-induced machine heating, Touschek scattering, intra-beam scattering, as well as incoherent tune shifts. The general trend that the efforts to achieve ultra-low emittance result in increasing the machine coupling impedance and the beam sensitivity to instability is reviewed. The nature of coupling impedance in a DLSR is described, followed by a seriesmore » of potentially dangerous beam instabilities driven by the former, such as resistive-wall, TMCI (transverse mode coupling instability), head-tail and microwave instabilities. Additionally, beam-ion and CSR (coherent synchrotron radiation) instabilities are also treated. Means to fight against collective effects such as lengthening of the bunch with passive harmonic cavities and bunch-by-bunch transverse feedback are introduced. Numerical codes developed and used to evaluate the machine coupling impedance, as well as to simulate beam instability using the former as inputs are described.« less

  13. Measurements of Martin-Puplett Interferometer Limitations using Blackbody Source

    SciTech Connect (OSTI)

    Evtushenko, Pavel E.; Klopf, John M.

    2013-06-01

    Frequency domain measurements with Martin-Puplett interferometer is one of a few techniques capable of bunch length measurements at the level of ~ 100 fs. As the bunch length becomes shorter, it is important to know and be able to measure the limitations of the instrument in terms of shortest measurable bunch length. In this paper we describe an experiment using a blackbody source with the modified Martin-Puplett interferometer that is routine- ly used for bunch length measurements at the JLab FEL, as a way to estimate the shortest, measurable bunch length. The limitation comes from high frequency cut-off of the wire-grid polarizer currently used and is estimated to be 50 fs RMS. The measurements are made with the same Golay cell detector that is used for beam measure- ments. We demonstrate that, even though the blackbody source is many orders of magnitude less bright than the coherent transition or synchrotron radiation, it can be used for the measurements and gives a very good signal to noise ratio in combination with lock-in detection. We also compare the measurements made in air and in vacuum to characterize the very strong effect of the atmospheric absorption.

  14. The tokamak density limit: A thermo-resistive disruption mechanism

    SciTech Connect (OSTI)

    Gates, D. A.; Brennan, D. P.; Delgado-Aparicio, L.; White, R. B.

    2015-06-15

    The behavior of magnetic islands with 3D electron temperature and the corresponding 3D resistivity effects on growth are examined for islands with near-zero net heating in the island interior. We refer to the resulting class of non-linearities as thermo-resistive effects. In particular, the effects of varying impurity mix on the previously proposed local island onset threshold [Gates and Delgado-Aparicio, Phys. Rev. Lett. 108, 165004 (2012)] are examined and shown to be consistent with the well established experimental scalings for tokamaks at the density limit. A surprisingly simple semi-analytic theory is developed which imposes the effects of heating/cooling in the island interior as well as the effects of island geometry. For the class of current profiles considered, it is found that a new term that accounts for the thermal effects of island asymmetry is required in the modified Rutherford equation. The resultant model is shown to exhibit a robust onset of a rapidly growing tearing modeconsistent with the disruption mechanism observed at the density limit in tokamaks. A fully non-linear 3D cylindrical calculation is performed that simulates the effect of net island heating/cooling by raising/suppressing the temperature in the core of the island. In both the analytic theory and the numerical simulation, the sudden threshold for rapid growth is found to be due to an interaction between three distinct thermal non-linearities which affect the island resistivity, thereby modifying the growth dynamics.

  15. On squeezed limits in single-field inflation. Part I

    SciTech Connect (OSTI)

    Flauger, Raphael; Green, Daniel; Porto, Rafael A. E-mail: dgreen@stanford.edu

    2013-08-01

    The n-point correlation functions in single-field inflation obey a set of consistency conditions in the exact squeezed limit which are not present in multi-field models, and thus are powerful tools to distinguish between the two. However, these consistency conditions may be violated for a finite range of scales in single-field models, for example by departures from the Bunch-Davies state. These excited states may be the consequence of interactions during inflation, or may be a remnant of the era that preceded inflation. In this paper we analyze the bispectrum, and show that in the regime of theoretical control the resulting signal in the squeezed limit remains undetectably small in all known models which continuously excite the state. We also show that the signal remains undetectably small if the initial state is related to the Bunch-Davies state by a Bogoliubov transformation and the energy density in the state is small enough so that the usual slow-roll conditions are obeyed. Bogoliubov states that lead to violations of the slow-roll conditions, as well as more general excited states, require more careful treatment and will be discussed in a separate publication.

  16. Strain-Based Acceptance Criteria for Energy-Limited Events

    SciTech Connect (OSTI)

    Spencer D. Snow; Dana K. Morton

    2009-07-01

    The American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) Code was primarily written with stress-based acceptance criteria. These criteria are applicable to force, displacement, and energy-controlled loadings and ensure a factor of safety against failure. However, stress-based acceptance criteria are often quite conservative for one time energy-limited events such as accidental drops and impacts. For several years, the ASME Working Group on Design of Division 3 Containments has been developing the Design Articles for Section III, Division 3, “Containments for Transportation and Storage of Spent Nuclear Fuel and High-Level Radioactive Material and Waste,” and has wanted to establish strain-based acceptance criteria for accidental drops of containments. This Division 3 working group asked the Working Group on Design Methodology (WGDM) to assist in developing these strain-based acceptance criteria. This paper discusses the current proposed strain-based acceptance criteria, associated limitations of use, its background development, and the current status.

  17. Superconducting fault current-limiter with variable shunt impedance

    DOE Patents [OSTI]

    Llambes, Juan Carlos H; Xiong, Xuming

    2013-11-19

    A superconducting fault current-limiter is provided, including a superconducting element configured to resistively or inductively limit a fault current, and one or more variable-impedance shunts electrically coupled in parallel with the superconducting element. The variable-impedance shunt(s) is configured to present a first impedance during a superconducting state of the superconducting element and a second impedance during a normal resistive state of the superconducting element. The superconducting element transitions from the superconducting state to the normal resistive state responsive to the fault current, and responsive thereto, the variable-impedance shunt(s) transitions from the first to the second impedance. The second impedance of the variable-impedance shunt(s) is a lower impedance than the first impedance, which facilitates current flow through the variable-impedance shunt(s) during a recovery transition of the superconducting element from the normal resistive state to the superconducting state, and thus, facilitates recovery of the superconducting element under load.

  18. Orbital ferromagnetism and the Chandrasekhar mass-limit

    SciTech Connect (OSTI)

    Akbari-Moghanjoughi, M.

    2012-05-15

    In this paper, we use quantum magnetohydrodynamic as well as magnetohydrostatic (MHS) models for a zero-temperature Fermi-Dirac plasma to show the fundamental role of Landau orbital ferromagnetism (LOFER) on the magnetohydrostatic stability of compact stars. It is revealed that the generalized flux-conserved equation of state of form B={beta}{rho}{sup 2s/3} only with conditions 0{<=}s{<=}1 and 0{<=}{beta}<{radical}(2{pi}) can lead to a stable compact stellar configuration. The distinct critical value {beta}{sub cr}={radical}(2{pi}) is shown to affect the magnetohydrostatic stability of the LOFER (s = 1) state and the magnetic field strength limit on the compact stellar configuration. Furthermore, the value of the parameter {beta} is remarked to fundamentally alter the Chandrasekhar mass-radius relation and the known mass-limit on white dwarfs when the star is in LOFER state. Current findings can help to understand the role of flux-frozen ferromagnetism and its fundamental role on hydrostatic stability of relativistically degenerate super-dense plasmas such as white dwarfs.

  19. On the Alignment Limit of the NMSSM Higgs Sector

    SciTech Connect (OSTI)

    Carena, Marcela; Haber, Howard E.; Low, Ian; Shah, Nausheen R.; Wagner, Carlos E. M.

    2015-10-30

    The Next-to-Minimal Supersymmetric extension of the Standard Model (NMSSM) with a Higgs boson of mass 125 GeV can be compatible with stop masses of order of the electroweak scale, thereby reducing the degree of fine-tuning necessary to achieve electroweak symmetry breaking. Moreover, in an attractive region of the NMSSM parameter space, corresponding to the \\alignment limit" in which one of the neutral Higgs fields lies approximately in the same direction in field space as the doublet Higgs vacuum expectation value, the observed Higgs boson is predicted to have Standard- Model-like properties. We derive analytical expressions for the alignment conditions and show that they point toward a more natural region of parameter space for electroweak symmetry breaking, while allowing for perturbativity of the theory up to the Planck scale. Additionally, the alignment limit in the NMSSM leads to a well defined spectrum in the Higgs and Higgsino sectors, and yields a rich and interesting Higgs boson phenomenology that can be tested at the LHC. We discuss the most promising channels for discovery and present several benchmark points for further study.

  20. Investigation of Knock limited Compression Ratio of Ethanol Gasoline Blends

    SciTech Connect (OSTI)

    Szybist, James P; Youngquist, Adam D; Wagner, Robert M; Moore, Wayne; Foster, Matthew; Confer, Keith

    2010-01-01

    Ethanol offers significant potential for increasing the compression ratio of SI engines resulting from its high octane number and high latent heat of vaporization. A study was conducted to determine the knock limited compression ratio of ethanol gasoline blends to identify the potential for improved operating efficiency. To operate an SI engine in a flex fuel vehicle requires operating strategies that allow operation on a broad range of fuels from gasoline to E85. Since gasoline or low ethanol blend operation is inherently limited by knock at high loads, strategies must be identified which allow operation on these fuels with minimal fuel economy or power density tradeoffs. A single cylinder direct injection spark ignited engine with fully variable hydraulic valve actuation (HVA) is operated at WOT conditions to determine the knock limited compression ratio (CR) of ethanol fuel blends. The geometric compression ratio is varied by changing pistons, producing CR from 9.2 to 13.66. The effective CR is varied using an electro-hydraulic valvetrain that changed the effective trapped displacement using both Early Intake Valve Closing (EIVC) and Late Intake Valve Closing (LIVC). The EIVC and LIVC strategies result in effective CR being reduced while maintaining the geometric expansion ratio. It was found that at substantially similar engine conditions, increasing the ethanol content of the fuel results in higher engine efficiency and higher engine power. These can be partially attributed to a charge cooling effect and a higher heating valve of a stoichiometric mixture for ethanol blends (per unit mass of air). Additional thermodynamic effects on and a mole multiplier are also explored. It was also found that high CR can increase the efficiency of ethanol fuel blends, and as a result, the fuel economy penalty associated with the lower energy content of E85 can be reduced by about a third. Such operation necessitates that the engine be operated in a de-rated manner for gasoline, which is knock-prone at these high CR, in order to maintain compatibility. By using EIVC and LIVC strategies, good efficiency is maintained with gasoline, but power is reduced by about 34%.

  1. PP-22-1 British Columbia Electric Company, Limited | Department of Energy

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

    1 British Columbia Electric Company, Limited PP-22-1 British Columbia Electric Company, Limited Presidential permit authorizing British Columbia Electric Company, Limited to construct, operate, and maintain electric transmission facilities at the U.S-Canadian border. PDF icon PP-22-1 British Columbia Electric Company, Limited More Documents & Publications PP-22 British Columbia Electric Company, Limited PP-22 British Columbia Electric Company, Limited, Amendment 1957 PP-22-4 British Columbia

  2. Wind Power Plant Enhancement with a Fault-Current Limiter: Preprint

    SciTech Connect (OSTI)

    Muljadi, E.; Gevorgian, V.; DeLaRosa, F.

    2011-03-01

    This paper investigates the capability of a saturable core fault-current limiter to limit the short circuit current of different types of wind turbine generators.

  3. Investigation of fundamental limits to beam brightness available from photoinjectors

    SciTech Connect (OSTI)

    Bazarov, Ivan

    2015-07-09

    The goal of this project was investigation of fundamental limits to beam brightness available from photoinjectors. This basic research in accelerator physics spanned over 5 years aiming to extend the fundamental understanding of high average current, low emittance sources of relativistic electrons based on photoemission guns, a necessary prerequisite for a new generation of coherent X-ray synchrotron radiation facilities based on continuous duty superconducting linacs. The program focused on two areas critical to making advances in the electron source performance: 1) the physics of photocathodes for the production of low emittance electrons and 2) control of space charge forces in the immediate vicinity to the cathode via 3D laser pulse shaping.

  4. Enhanced optical limiting effects of graphene materials in polyimide

    SciTech Connect (OSTI)

    Gan, Yao; Feng, Miao; Zhan, Hongbing

    2014-04-28

    Three different graphene nanostructure suspensions of graphene oxide nanosheets (GONSs), graphene oxide nanoribbons (GONRs), and graphene oxide quantum dots (GOQDs) are prepared and characterized. Using a typical two-step method, the GONSs, GONRs, and GOQDs are incorporated into a polyimide (PI) matrix to synthesize graphene/PI composite films, whose nonlinear optical (NLO) and optical limiting (OL) properties are investigated at 532?nm in the nanosecond regime. The GONR suspension exhibits superior NLO and OL effects compared with those of GONSs and GOQDs because of its stronger nonlinear scattering and excited-state absorption. The graphene/PI composite films exhibit NLO and OL performance superior to that of their corresponding suspensions, which is attributed primarily to a combination of nonlinear mechanisms, charge transfer between graphene materials and PI, and the matrix effect.

  5. Short wavelength limits of current shot noise suppression

    SciTech Connect (OSTI)

    Nause, Ariel; Dyunin, Egor; Gover, Avraham

    2014-08-15

    Shot noise in electron beam was assumed to be one of the features beyond control of accelerator physics. Current results attained in experiments at Accelerator Test Facility in Brookhaven and Linac Coherent Light Source in Stanford suggest that the control of the shot noise in electron beam (and therefore of spontaneous radiation and Self Amplified Spontaneous Emission of Free Electron Lasers) is feasible at least in the visible range of the spectrum. Here, we present a general linear formulation for collective micro-dynamics of e-beam noise and its control. Specifically, we compare two schemes for current noise suppression: a quarter plasma wavelength drift section and a combined drift/dispersive (transverse magnetic field) section. We examine and compare their limits of applicability at short wavelengths via considerations of electron phase-spread and the related Landau damping effect.

  6. Possible high power limitations from RF pulsed heating

    SciTech Connect (OSTI)

    Pritzkau, D.P.; Bowden, G.B.; Menegat, A.; Siemann, R.H. [Stanford Linear Accelerator Center, Stanford University, California 94309 (United States)

    1999-05-01

    One of the possible limitations to achieving high power in RF structures is damage to metal surfaces due to RF pulsed heating. Such damage may lead to degradation of RF performance. An experiment to study RF pulsed heating on copper has been developed at SLAC. The experiment consists of operating two pillbox cavities in the TE{sub 011} mode using a 50 MW X-Band klystron. The estimated temperature rise of the surface of copper is 350&hthinsp;{degree}C for a power input of 20 MW to each cavity with a pulse length of 1.5 {mu}s. Preliminary results from an experiment performed earlier are presented. A revised design for continued experiments is also presented along with relevant theory and calculations. {copyright} {ital 1999 American Institute of Physics.}

  7. Current parallel I/O limitations to scalable data analysis.

    SciTech Connect (OSTI)

    Mascarenhas, Ajith Arthur; Pebay, Philippe Pierre

    2011-07-01

    This report describes the limitations to parallel scalability which we have encountered when applying our otherwise optimally scalable parallel statistical analysis tool kit to large data sets distributed across the parallel file system of the current premier DOE computational facility. This report describes our study to evaluate the effect of parallel I/O on the overall scalability of a parallel data analysis pipeline using our scalable parallel statistics tool kit [PTBM11]. In this goal, we tested it using the Jaguar-pf DOE/ORNL peta-scale platform on a large combustion simulation data under a variety of process counts and domain decompositions scenarios. In this report we have recalled the foundations of the parallel statistical analysis tool kit which we have designed and implemented, with the specific double intent of reproducing typical data analysis workflows, and achieving optimal design for scalable parallel implementations. We have briefly reviewed those earlier results and publications which allow us to conclude that we have achieved both goals. However, in this report we have further established that, when used in conjuction with a state-of-the-art parallel I/O system, as can be found on the premier DOE peta-scale platform, the scaling properties of the overall analysis pipeline comprising parallel data access routines degrade rapidly. This finding is problematic and must be addressed if peta-scale data analysis is to be made scalable, or even possible. In order to attempt to address these parallel I/O limitations, we will investigate the use the Adaptable IO System (ADIOS) [LZL+10] to improve I/O performance, while maintaining flexibility for a variety of IO options, such MPI IO, POSIX IO. This system is developed at ORNL and other collaborating institutions, and is being tested extensively on Jaguar-pf. Simulation code being developed on these systems will also use ADIOS to output the data thereby making it easier for other systems, such as ours, to process that data.

  8. Peak Dose Assessment for Proposed DOE-PPPO Authorized Limits

    SciTech Connect (OSTI)

    Maldonado, Delis

    2012-06-01

    The Oak Ridge Institute for Science and Education (ORISE), a U.S. Department of Energy (DOE) prime contractor, was contracted by the DOE Portsmouth/Paducah Project Office (DOE-PPPO) to conduct a peak dose assessment in support of the Authorized Limits Request for Solid Waste Disposal at Landfill C-746-U at the Paducah Gaseous Diffusion Plant (DOE-PPPO 2011a). The peak doses were calculated based on the DOE-PPPO Proposed Single Radionuclides Soil Guidelines and the DOE-PPPO Proposed Authorized Limits (AL) Volumetric Concentrations available in DOE-PPPO 2011a. This work is provided as an appendix to the Dose Modeling Evaluations and Technical Support Document for the Authorized Limits Request for the C-746-U Landfill at the Paducah Gaseous Diffusion Plant, Paducah, Kentucky (ORISE 2012). The receptors evaluated in ORISE 2012 were selected by the DOE-PPPO for the additional peak dose evaluations. These receptors included a Landfill Worker, Trespasser, Resident Farmer (onsite), Resident Gardener, Recreational User, Outdoor Worker and an Offsite Resident Farmer. The RESRAD (Version 6.5) and RESRAD-OFFSITE (Version 2.5) computer codes were used for the peak dose assessments. Deterministic peak dose assessments were performed for all the receptors and a probabilistic dose assessment was performed only for the Offsite Resident Farmer at the request of the DOE-PPPO. In a deterministic analysis, a single input value results in a single output value. In other words, a deterministic analysis uses single parameter values for every variable in the code. By contrast, a probabilistic approach assigns parameter ranges to certain variables, and the code randomly selects the values for each variable from the parameter range each time it calculates the dose (NRC 2006). The receptor scenarios, computer codes and parameter input files were previously used in ORISE 2012. A few modifications were made to the parameter input files as appropriate for this effort. Some of these changes included increasing the time horizon beyond 1,050 years (yr), and using the radionuclide concentrations provided by the DOE-PPPO as inputs into the codes. The deterministic peak doses were evaluated within time horizons of 70 yr (for the Landfill Worker and Trespasser), 1,050 yr, 10,000 yr and 100,000 yr (for the Resident Farmer [onsite], Resident Gardener, Recreational User, Outdoor Worker and Offsite Resident Farmer) at the request of the DOE-PPPO. The time horizons of 10,000 yr and 100,000 yr were used at the request of the DOE-PPPO for informational purposes only. The probabilistic peak of the mean dose assessment was performed for the Offsite Resident Farmer using Technetium-99 (Tc-99) and a time horizon of 1,050 yr. The results of the deterministic analyses indicate that among all receptors and time horizons evaluated, the highest projected dose, 2,700 mrem/yr, occurred for the Resident Farmer (onsite) at 12,773 yr. The exposure pathways contributing to the peak dose are ingestion of plants, external gamma, and ingestion of milk, meat and soil. However, this receptor is considered an implausible receptor. The only receptors considered plausible are the Landfill Worker, Recreational User, Outdoor Worker and the Offsite Resident Farmer. The maximum projected dose among the plausible receptors is 220 mrem/yr for the Outdoor Worker and it occurs at 19,045 yr. The exposure pathways contributing to the dose for this receptor are external gamma and soil ingestion. The results of the probabilistic peak of the mean dose analysis for the Offsite Resident Farmer indicate that the average (arithmetic mean) of the peak of the mean doses for this receptor is 0.98 mrem/yr and it occurs at 1,050 yr. This dose corresponds to Tc-99 within the time horizon of 1,050 yr.

  9. Innovative Feed-In Tariff Designs that Limit Policy Costs

    SciTech Connect (OSTI)

    Kreycik, C.; Couture, T. D.; Cory, K. S.

    2011-06-01

    Feed-in tariffs (FITs) are the most prevalent renewable energy policy used globally to date, and there are many benefits to the certainty offered in the marketplace to reduce development risks and associated financing costs and to grow the renewable energy industry. However, concerns over escalating costs in jurisdictions with FIT policies have led to increased attention on cost control in renewable energy policy design. In recent years, policy mechanisms for containing FIT costs have become more refined, allowing policymakers to exert greater control on policy outcomes and on the resulting costs to ratepayers. As policymakers and regulators in the United States begin to explore the use of FITs, careful consideration must be given to the ways in which policy design can be used to balance the policies' advantages while bounding its costs. This report explores mechanisms that policymakers have implemented to limit FIT policy costs. If designed clearly and transparently, such mechanisms can align policymaker and market expectations for project deployment. Three different policy tools are evaluated: (1) caps, (2) payment level adjustment mechanisms, and (3) auction-based designs. The report employs case studies to explore the strengths and weaknesses of these three cost containment tools. These tools are then evaluated with a set of criteria including predictability for policymakers and the marketplace and the potential for unintended consequences.

  10. Performance limits of plasmon-enhanced organic photovoltaics

    SciTech Connect (OSTI)

    Karatay, Durmus U.; Ginger, David S.; Salvador, Michael; Yao, Kai; Jen, Alex K.-Y.

    2014-07-21

    We use a combination of experiment and modeling to explore the promise and limitations of using plasmon-resonant metal nanoparticles to enhance the device performance of organic photovoltaics (OPVs). We focus on optical properties typical of the current generation of low-bandgap donor polymers blended with the fullerene (6,6)-phenyl C{sub 71}-butyric acid methyl ester (PC{sub 71}BM) and use the polymer poly(indacenodithiophene-co-phenanthro[9,10-b]quinoxaline) (PIDT-PhanQ) as our test case. We model the optical properties and performance of these devices both in the presence and absence of a variety of colloidal silver nanoparticles. We show that for these materials, device performance is sensitive to the relative z-position and the density of nanoparticles inside the active layer. Using conservative estimates of the internal quantum efficiency for the PIDT-PhanQ/PC{sub 71}BM blend, we calculate that optimally placed silver nanoparticles could yield an enhancement in short-circuit current density of over 31% when used with???80-nm-thick active layers, resulting in an absolute increase in power conversion efficiency of up to ?2% for the device based on optical engineering.

  11. Connecting apparatus for limited rotary of rectilinear motion (II)

    DOE Patents [OSTI]

    Hardin, Jr., Roy T. (Greensburg, PA); Kurinko, Carl D. (Penn Township, Westmoreland County both of, PA)

    1981-01-01

    Apparatus for providing connection between two members having relative movement in a horizontal plane in a rotary or linear fashion. The apparatus includes a set of vertical surfaces affixed to each of the members, laterally aligned across a selected vertical gap. A number of cables or hoses, for electrical, hydraulic, or pneumatic connection are arranged between consecutive surfaces in a C-shaped traveling loop, connected through their end portions to the two respective members, so that through a sliding motion portions of the cable are transferred from between one set of surfaces to the other aligned set, across the gap, upon relative motion of the members. A number of flexible devices are affixed to the upper set of surfaces for supporting the upper portion of each looped cable. The apparatus is particularly adaptable to an area having limited lateral clearances and requiring signal level separation between electrical cables, such as found in the rotating plugs and associated equipment of the reactor vessel head of a nuclear reactor.

  12. Fireproof impact limiter aggregate packaging inside shipping containers

    DOE Patents [OSTI]

    Byington, Gerald A.; Oakes, Jr., Raymon Edgar; Feldman, Matthew Rookes

    2001-01-01

    The invention is a product and a process for making a fireproof, impact limiter, homogeneous aggregate material for casting inside a hazardous material shipping container, or a double-contained Type-B nuclear shipping container. The homogeneous aggregate material is prepared by mixing inorganic compounds with water, pouring the mixture into the void spaces between an inner storage containment vessel and an outer shipping container, vibrating the mixture inside the shipping container, with subsequent curing, baking, and cooling of the mixture to form a solidified material which encapsulates an inner storage containment vessel inside an outer shipping container. The solidified material forms a protective enclosure around an inner storage containment vessel which may store hazardous, toxic, or radioactive material. The solidified material forms a homogeneous fire-resistant material that does not readily transfer heat, and provides general shock and specific point-impact protection, providing protection to the interior storage containment vessel. The material is low cost, may contain neutron absorbing compounds, and is easily formed into a variety of shapes to fill the interior void spaces of shipping containers.

  13. Tritium handling experience at Atomic Energy of Canada Limited

    SciTech Connect (OSTI)

    Suppiah, S.; McCrimmon, K.; Lalonde, S.; Ryland, D.; Boniface, H.; Muirhead, C.; Castillo, I.

    2015-03-15

    Canada has been a leader in tritium handling technologies as a result of the successful CANDU reactor technology used for power production. Over the last 50 to 60 years, capabilities have been established in tritium handling and tritium management in CANDU stations, tritium removal processes for heavy and light water, tritium measurement and monitoring, and understanding the effects of tritium on the environment. This paper outlines details of tritium-related work currently being carried out at Atomic Energy of Canada Limited (AECL). It concerns the CECE (Combined Electrolysis and Catalytic Exchange) process for detritiation, tritium-compatible electrolysers, tritium permeation studies, and tritium powered batteries. It is worth noting that AECL offers a Tritium Safe-Handling Course to national and international participants, the course is a mixture of classroom sessions and hands-on practical exercises. The expertise and facilities available at AECL is ready to address technological needs of nuclear fusion and next-generation nuclear fission reactors related to tritium handling and related issues.

  14. First wall and limiter surfaces for plasma devices

    DOE Patents [OSTI]

    Krauss, Alan R. (Plainfield, IL); Gruen, Dieter M. (Downers Grove, IL)

    1983-01-01

    For a plasma device, a surface of a first wall or limiter with reduced loss of metal by erosion is provided by forming a monolayer of an alkali or alkaline earth metal on a substrate of a more negative metal. The surface exhibits a reduced loss of metal by erosion and particularly by sputtering and an increased secondary ion/neutral ratio resulting in a greater return of atoms escaping from the surface. In another aspect of the invention, the substrate includes a portion of the second metal and serves to replenish the surface layer with atoms of the second metal. In one process associated with self-generating desired surface, the metals as an alloy are selected to provide a first layer having a high concentration of the second metal in contrast to a very low concentration in the second layer and bulk to result in a surface with a monolayer of the second metal. When the combination of metals results in an intermetallic compound, selective removal of the first metal during an initial bombardment stage provides the surface layer with a predominance of the second metal.

  15. Message passing with a limited number of DMA byte counters

    DOE Patents [OSTI]

    Blocksome, Michael (Rochester, MN); Chen, Dong (Croton on Hudson, NY); Giampapa, Mark E. (Irvington, NY); Heidelberger, Philip (Cortlandt Manor, NY); Kumar, Sameer (White Plains, NY); Parker, Jeffrey J. (Rochester, MN)

    2011-10-04

    A method for passing messages in a parallel computer system constructed as a plurality of compute nodes interconnected as a network where each compute node includes a DMA engine but includes only a limited number of byte counters for tracking a number of bytes that are sent or received by the DMA engine, where the byte counters may be used in shared counter or exclusive counter modes of operation. The method includes using rendezvous protocol, a source compute node deterministically sending a request to send (RTS) message with a single RTS descriptor using an exclusive injection counter to track both the RTS message and message data to be sent in association with the RTS message, to a destination compute node such that the RTS descriptor indicates to the destination compute node that the message data will be adaptively routed to the destination node. Using one DMA FIFO at the source compute node, the RTS descriptors are maintained for rendezvous messages destined for the destination compute node to ensure proper message data ordering thereat. Using a reception counter at a DMA engine, the destination compute node tracks reception of the RTS and associated message data and sends a clear to send (CTS) message to the source node in a rendezvous protocol form of a remote get to accept the RTS message and message data and processing the remote get (CTS) by the source compute node DMA engine to provide the message data to be sent.

  16. PP-85-2 Boliden Westmin (Canada) Limited | Department of Energy

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

    5-2 Boliden Westmin (Canada) Limited PP-85-2 Boliden Westmin (Canada) Limited Presidential Permit authorizing Boliden Westmin (Canada) Limited to construct, operate and maintain electric transmission facilities at the U.S. - Canada Border. PDF icon PP-85-2 Boliden Westmin (Canada) Limited More Documents & Publications PP-85-3 Boliden Power Limited PP-85-A Westmin Mines, Inc. PP-85 Westmin Resources

  17. Development of Occupational Exposure Limits for the Hanford Tank Farms

    SciTech Connect (OSTI)

    Still, Kenneth; Gardner, Donald; Snyder, Robert; Anderson, Thomas; Honeyman, James; Timchalk, Charles

    2010-04-01

    Production of plutonium for the United States nuclear weapons program from the 1940s to the 1980s generated 53 million gallons of radioactive chemical waste, which is storedin 177 underground tanks at the Hanford Site in southeastern W 18 ashington State. Recent 19 attempts to begin the retrieval and treatment of these wastes require moving the waste to 20 more modern tanks results in potential exposure of the workers to unfamiliar odors 21 emanating from headspace in the tanks. Given the unknown risks involved, workers 22 were placed on supplied air respiratory protection. CH2M HILL, the managers of the 23 Hanford Site Tank Farms, asked an Independent Toxicology Panel (ITP) to assist them in issues relating to an Industrial Hygiene and risk assessment problem. The ITP was called upon to help determine the risk of exposure to vapors from the tanks, and in general develop a strategy for solution of the problem. This paper presents the methods used to determine the chemicals of potential concern (COPC) and the resultant development of screening values and Acceptable Occupational Exposure Limits (AOELs) for these COPCs. A total of 1,826 chemicals were inventoried and evaluated. Over 1,500 chemicals were identified in the waste tanks headspaces and more than 600 of these were assigned screening values; 72 of these compounds were recommended for AOEL development. Included in this list of 72 were 57 COPCs identified by the ITP and of these 47 were subsequently assigned AOELs. An exhaustive exposure assessment strategy was developed by the CH2M HILL industrial hygiene department to evaluate these COPCs.

  18. Limitations of the planning organ at risk volume (PRV) concept

    SciTech Connect (OSTI)

    Stroom, Joep C. [Netherlands Cancer Institute, Department of Radiation Oncology, Amsterdam (Netherlands)]. E-mail: j.stroom@nki.nl; Heijmen, Ben J.M. [Erasmus MC-Daniel den Hoed Cancer Center, Department of Radiation Oncology, Rotterdam (Netherlands)

    2006-09-01

    Purpose: Previously, we determined a planning target volume (PTV) margin recipe for geometrical errors in radiotherapy equal to M{sub T} = 2{sigma} + 0.7{sigma}, with {sigma} and {sigma} standard deviations describing systematic and random errors, respectively. In this paper, we investigated margins for organs at risk (OAR), yielding the so-called planning organ at risk volume (PRV). Methods and Materials: For critical organs with a maximum dose (D{sub max}) constraint, we calculated margins such that D{sub max} in the PRV is equal to the motion averaged D{sub max} in the (moving) clinical target volume (CTV). We studied margins for the spinal cord in 10 head-and-neck cases and 10 lung cases, each with two different clinical plans. For critical organs with a dose-volume constraint, we also investigated whether a margin recipe was feasible. Results: For the 20 spinal cords considered, the average margin recipe found was: M{sub R} = 1.6{sigma} + 0.2{sigma} with variations for systematic and random errors of 1.2{sigma} to 1.8{sigma} and -0.2{sigma} to 0.6{sigma}, respectively. The variations were due to differences in shape and position of the dose distributions with respect to the cords. The recipe also depended significantly on the volume definition of D{sub max}. For critical organs with a dose-volume constraint, the PRV concept appears even less useful because a margin around, e.g., the rectum changes the volume in such a manner that dose-volume constraints stop making sense. Conclusion: The concept of PRV for planning of radiotherapy is of limited use. Therefore, alternative ways should be developed to include geometric uncertainties of OARs in radiotherapy planning.

  19. An efficient extrapolation to the (T)/CBS limit

    SciTech Connect (OSTI)

    Ranasinghe, Duminda S.; Barnes, Ericka C.

    2014-05-14

    We extrapolate to the perturbative triples (T)/complete basis set (CBS) limit using double ? basis sets without polarization functions (Wesleyan-1-Triples-2? or Wes1T-2Z) and triple ? basis sets with a single level of polarization functions (Wesleyan-1-Triples-3? or Wes1T-3Z). These basis sets were optimized for 102 species representing the first two rows of the Periodic Table. The species include the entire set of neutral atoms, positive and negative atomic ions, as well as several homonuclear diatomic molecules, hydrides, rare gas dimers, polar molecules, such as oxides and fluorides, and a few transition states. The extrapolated Wes1T-(2,3)Z triples energies agree with (T)/CBS benchmarks to within 0.65 mE{sub h}, while the rms deviations of comparable model chemistries W1, CBS-APNO, and CBS-QB3 for the same test set are 0.23 mE{sub h}, 2.37 mE{sub h}, and 5.80 mE{sub h}, respectively. The Wes1T-(2,3)Z triples calculation time for the largest hydrocarbon in the G2/97 test set, C{sub 6}H{sub 5}Me{sup +}, is reduced by a factor of 25 when compared to W1. The cost-effectiveness of the Wes1T-(2,3)Z extrapolation validates the usefulness of the Wes1T-2Z and Wes1T-3Z basis sets which are now available for a more efficient extrapolation of the (T) component of any composite model chemistry.

  20. Measuring the Interestingness of Articles in a Limited User Environment

    SciTech Connect (OSTI)

    Pon, R K

    2008-10-06

    Search engines, such as Google, assign scores to news articles based on their relevancy to a query. However, not all relevant articles for the query may be interesting to a user. For example, if the article is old or yields little new information, the article would be uninteresting. Relevancy scores do not take into account what makes an article interesting, which varies from user to user. Although methods such as collaborative filtering have been shown to be effective in recommendation systems, in a limited user environment, there are not enough users that would make collaborative filtering effective. A general framework, called iScore, is presented for defining and measuring the 'interestingness' of articles, incorporating user-feedback. iScore addresses various aspects of what makes an article interesting, such as topic relevancy, uniqueness, freshness, source reputation, and writing style. It employs various methods to measure these features and uses a classifier operating on these features to recommend articles. The basic iScore configuration is shown to improve recommendation results by as much as 20%. In addition to the basic iScore features, additional features are presented to address the deficiencies of existing feature extractors, such as one that tracks multiple topics, called MTT, and a version of the Rocchio algorithm that learns its parameters online as it processes documents, called eRocchio. The inclusion of both MTT and eRocchio into iScore is shown to improve iScore recommendation results by as much as 3.1% and 5.6%, respectively. Additionally, in TREC11 Adaptive Filter Task, eRocchio is shown to be 10% better than the best filter in the last run of the task. In addition to these two major topic relevancy measures, other features are also introduced that employ language models, phrases, clustering, and changes in topics to improve recommendation results. These additional features are shown to improve recommendation results by iScore by up to 14%. Due to varying reasons that users hold regarding why an article is interesting, an online feature selection method in naive Bayes is also introduced. Online feature selection can improve recommendation results in iScore by up to 18.9%. In summary, iScore in its best configuration can outperform traditional IR techniques by as much as 50.7%. iScore and its components are evaluated in the news recommendation task using three datasets from Yahoo! News, actual users, and Digg. iScore and its components are also evaluated in the TREC Adaptive Filter task using the Reuters RCV1 corpus.

  1. 23 V.S.A. Section 1431 Height and Width Limits | Open Energy...

    Open Energy Info (EERE)

    search OpenEI Reference LibraryAdd to library Legal Document- StatuteStatute: 23 V.S.A. Section 1431 Height and Width LimitsLegal Abstract Limits for the height and width...

  2. Henan Mingdu Wind Power Co Ltd aka He Nan Ming Du Feng Dian Limited...

    Open Energy Info (EERE)

    Mingdu Wind Power Co Ltd aka He Nan Ming Du Feng Dian Limited Company Jump to: navigation, search Name: Henan Mingdu Wind Power Co Ltd (aka He Nan Ming Du Feng Dian Limited...

  3. EECBG 11-002 Clarification of Ten Percent Limitation on Use of...

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

    11-002 Clarification of Ten Percent Limitation on Use of Funds for Administrative Expenses EECBG 11-002 Clarification of Ten Percent Limitation on Use of Funds for Administrative...

  4. Critical Issues in NPH Categorization and Limit State Selection of Structures, Systems, and Components

    Broader source: Energy.gov [DOE]

    Critical Issues in NPH Categorization and Limit State Selection of Structures, Systems, and Components Quazi Hossain Lawrence Livermore National Laboratory

  5. Upper limit power for self-guided propagation of intense lasers in plasma

    SciTech Connect (OSTI)

    Wang Weimin; Hu Zhidan; Chen Liming; Li Yutong; Sheng Zhengming; Zhang Jie; Zeng Ming; Liu Yue; Kawata, Shigeo; Zheng Chunyang; Mori, Warren B.

    2012-10-29

    It is shown that there is an upper-limit laser power for self-focusing of a laser pulse in plasma in addition to the well-known lower-limit critical power set by the relativistic effect. This upper limit is caused by the transverse ponderomotive force of the laser, which tends to expel plasma electrons from the laser propagating area. Furthermore, there is a lower-limit plasma density for a given laser spot size, below which self-focusing does not occur for any laser power. Both the lower-limit density and the upper-limit power are derived theoretically and verified by two-dimensional and three-dimensional particle-in-cell simulations. It is also found that plasma channels may be unfavorable for stable guiding of lasers above the upper-limit power.

  6. Frequently Asked Questions: Lighting Choices to Save You Money | Department

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

    of Energy Frequently Asked Questions: Lighting Choices to Save You Money Below are some of the most frequently asked questions and answers about the new lighting efficiency standards. Learn more about your lighting choices and find out how to shop for lights by lumens, not watts. Why are my lighting choices changing? What is the Energy Independence and Security Act of 2007 (EISA 2007)? When will the new bulbs be phased in? What will the lighting standards mandated by EISA 2007 mean to

  7. How Much Energy does Your TV Set Use? | Department of Energy

    Energy Savers [EERE]

    Much Energy does Your TV Set Use? How Much Energy does Your TV Set Use? August 11, 2011 - 5:49am Addthis This week, Andrea compared the energy use of TVs with traditional incandescent light bulbs and talked about the heat coming off her TV set. We've talked about TV sets and the energy they use quite a bit on the blog: Stars on TV-ENERGY STARS®, That Is Say Hello to Stricter TV Standards New TV Guide - EnergyGuide, That Is Watch the Watts: Tips for Buying a New Television We're curious: Do you

  8. Lumens and the Lighting Facts Label | Department of Energy

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

    Lumens and the Lighting Facts Label Lumens and the Lighting Facts Label Energy 101 Lumens: The new way to shop for light lighting_sub.jpg When you're shopping for lightbulbs, compare lumens to be sure you're getting the amount of light, or level of brightness, you want. The Lighting Facts Label will help. This new label will make it easy to compare bulb brightness, color, life, and estimated operating cost for the year. Buy Lumens, Not Watts We typically buy things based on how much of it we

  9. Top 8 Things You Didn't Know About LEDs | Department of Energy

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

    8 Things You Didn't Know About LEDs Top 8 Things You Didn't Know About LEDs June 4, 2013 - 9:20am Addthis Using funding from the Energy Department, Philips Lumileds developed the LUXEON S1000 -- a commercial LED product used in outdoor street and parking lot lighting. While small, this chip is the heart of the light and as of June 2012 was brighter than a 60-watt light bulb. | Photo courtesy of Philips Lumileds. Using funding from the Energy Department, Philips Lumileds developed the LUXEON

  10. Microsoft Word - NGL Downlight Report Alston Bird CBI FINAL 2015...

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

    in Energy and Environmental Design LEED-CI Leadership in Energy and Environmental Design-Commercial Interiors LPD lighting power density lmW lumens per watt LLP Limited...

  11. Use of Integrated Decay Heat Limits to Facilitate Spent Nuclear Fuel Loading to Yucca Mountain

    SciTech Connect (OSTI)

    Li, Jun; Yim, Man-Sung; McNelis, David; Piet, Steven

    2007-07-01

    As an alternative to the use of the linear loading or areal power density (APD) concept, using integrated decay heat limits based on the use of mountain-scale heat transfer analysis is considered to represent the thermal impact from the deposited spent nuclear fuel (SNF) to the Yucca Mountain repository. Two different integrated decay heat limits were derived to represent both the short-term (up to 50 years from the time of repository closure) and the long-term decay heat effect (up to 1500 years from the time of repository closure). The derived limits were found to appropriately represent the drift wall temperature limit (200 deg. C) and the midway between adjacent drifts temperature limit (96 deg. C) as long as used fuel is uniformly loaded into the mountain. These limits can be a useful practical guide to facilitate the loading of used fuel into Yucca Mountain. (authors)

  12. EECBG 11-002 Clarification of Ten Percent Limitation on Use of Funds for

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

    Administrative Expenses | Department of Energy 11-002 Clarification of Ten Percent Limitation on Use of Funds for Administrative Expenses EECBG 11-002 Clarification of Ten Percent Limitation on Use of Funds for Administrative Expenses U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency and Conservation Block Grant Program (EECBG), ten percent limitation, administrative expenses, the Energy Independence and Security Act of 2007. PDF icon

  13. Laser-to-hot-electron conversion limitations in relativistic laser matter

    Office of Scientific and Technical Information (OSTI)

    interactions due to multi-picosecond dynamics. (Journal Article) | DOE PAGES Laser-to-hot-electron conversion limitations in relativistic laser matter interactions due to multi-picosecond dynamics. This content will become publicly available on April 20, 2016 « Prev Next » Title: Laser-to-hot-electron conversion limitations in relativistic laser matter interactions due to multi-picosecond dynamics. High-energy short-pulse lasers are pushing the limits of plasma-based particle acceleration,

  14. Forming Limits of Weld Metal in Aluminum Alloys and Advanced High-Strength Steels

    SciTech Connect (OSTI)

    Stephens, Elizabeth V.; Smith, Mark T.; Grant, Glenn J.; Davies, Richard W.

    2010-10-25

    This work characterizes the mechanical properties of DP600 laser welded TWBs (1 mm-1.5 mm) near and in the weld, as well as their limits of formability. The approach uses simple uniaxial experiments to measure the variability in the forming limits of the weld region, and uses a theoretical forming limit diagram calculation to establish a probabilistic distribution of weld region imperfection using an M-K method approach

  15. DOE-Sponsored Project Pushes the Limits of Seismic-While-Drilling

    Office of Environmental Management (EM)

    Technology | Department of Energy Project Pushes the Limits of Seismic-While-Drilling Technology DOE-Sponsored Project Pushes the Limits of Seismic-While-Drilling Technology August 12, 2009 - 1:00pm Addthis Washington, DC - In a project sponsored by the U.S. Department of Energy, Technology International Inc. has developed a breakthrough borehole imaging system that stands on the cusp of commercialization. By pushing the limits of seismic-while-drilling technology, the patent-pending

  16. Westinghouse and Fuzhou Permitted to Restart Distribution of Light Bulb Products

    Broader source: Energy.gov [DOE]

    The Department has issued Notices of Allowance to Westinghouse Lighting Corporation and Fuzhou Sunlight Lighting Electrical Appliance Company determining, based on corrected test data provided by...

  17. DOE Requires Westinghouse to Cease Sales of Two Light Bulb Models...

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

    product code 0521000), which is manufactured by Fuzhou and sold under the Westinghouse brand. The companies previously submitted data to DOE showing that 12 Westinghouse-brand...

  18. Studying some mechanical properties of MgO with used neon bulb glass

    SciTech Connect (OSTI)

    Issa, Tarik Talib; Khaleel, Saba Mahdi; Abdul Kareem, Noura Ammar

    2013-12-16

    Ceramic compact of MgO +WT% of UNBG were sintered at different sintering temperature (700, 900, 1100, 1300)c, under static air for 3 hours. X-ray diffraction and some mechanical properties were conducted. The maximum sintered density, compression; fracture strength and hardness were indicated for the compilation of MgO ?20 WT % UNBG, sintered at 1300 c.

  19. DOE Withdraws the Energy Star Label from 34 Compact Fluorescent Light Bulbs

    Broader source: Energy.gov [DOE]

    Washington, DC - On January 25th, the General Counsel notified 25 manufacturers that the Department of Energy has withdrawn their right to use the Energy Star label on 34 different models of...

  20. Upper limits on the total cosmic-ray luminosity of individual sources

    SciTech Connect (OSTI)

    Anjos, R.C.; De Souza, V.; Supanitsky, A.D. E-mail: vitor@ifsc.usp.br

    2014-07-01

    In this paper, upper limits on the total luminosity of ultra-high-energy cosmic-rays (UHECR) E>10{sup 18} eV) are determined for five individual sources. The upper limit on the integral flux of GeV--TeV gamma-rays is used to extract the upper limit on the total UHECR luminosity of individual sources. The correlation between upper limit on the integral GeV--TeV gamma-ray flux and upper limit on the UHECR luminosity is established through the cascading process that takes place during propagation of the cosmic rays in the background radiation fields, as explained in reference [1]. Twenty-eight sources measured by FERMI-LAT, VERITAS and MAGIC observatories have been studied. The measured upper limit on the GeV--TeV gamma-ray flux is restrictive enough to allow the calculation of an upper limit on the total UHECR cosmic-ray luminosity of five sources. The upper limit on the UHECR cosmic-ray luminosity of these sources is shown for several assumptions on the emission mechanism. For all studied sources an upper limit on the ultra-high-energy proton luminosity is also set.

  1. Automatic recovery of missing amplitudes and phases in tilt-limited...

    Office of Scientific and Technical Information (OSTI)

    Automatic recovery of missing amplitudes and phases in tilt-limited electron crystallography of two-dimensional crystals Citation Details In-Document Search Title: Automatic...

  2. Limits on dark matter proton scattering from neutrino telescopes using micrOMEGAs

    SciTech Connect (OSTI)

    Bélanger, G.; Silva, J. Da; Perrillat-Bottonet, T.; Pukhov, A.

    2015-12-17

    Limits on dark matter spin dependent elastic scattering cross section on protons derived from IceCube data are obtained for different dark matter annihilation channels using micrOMEGAs. The uncertainty on the derived limits, estimated by using different neutrino spectra, can reach a factor two. For all dark matter annihilation channels except for quarks, the limits on the spin dependent cross section are more stringent than those obtained in direct detection experiments. The new functions that allow to derive those limits are described.

  3. Redefining the Limits of Photovoltaic Efficiency | U.S. DOE Office...

    Office of Science (SC) Website

    discuss new materials and processes for overcoming the Shockley-Queisser limit of solar energy conversion efficiency. For more information and registration instructions, see the ...

  4. Determination of the Limits of Quasi-Static and Dynamic Solutions...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Determination of the Limits of Quasi-Static and Dynamic Solutions for Problems with Frictional Interfaces. Citation Details In-Document Search Title: Determination ...

  5. Process Limits

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

    0 0 file size (blocks) unlimited unlimited pending signals 4199424 4199424 max locked memory (kbytes) 32 32 max memory size (kbytes) unlimited unlimited open files 1024 1024 pipe...

  6. A flowing liquid lithium limiter for the Experimental Advanced Superconducting Tokamak

    SciTech Connect (OSTI)

    Ren, J.; Zuo, G. Z.; Hu, J. S.; Sun, Z.; Yang, Q. X.; Li, J. G.; Xie, H.; Chen, Z. X.; Zakharov, L. E.

    2015-02-15

    A program involving the extensive and systematic use of lithium (Li) as a first, or plasma-facing, surface in Tokamak fusion research devices located at Institute of Plasma Physics, Chinese Academy of Sciences, was started in 2009. Many remarkable results have been obtained by the application of Li coatings in Experimental Advanced Superconducting Tokamak (EAST) and liquid Li limiters in the HT-7 Tokamakboth located at the institute. In furtherance of the lithium program, a flowing liquid lithium (FLiLi) limiter system has been designed and manufactured for EAST. The design of the FLiLi limiter is based on the concept of a thin flowing film which was previously tested in HT-7. Exploiting the capabilities of the existing material and plasma evaluation system on EAST, the limiter will be pre-wetted with Li and mechanically translated to the edge of EAST during plasma discharges. The limiter will employ a novel electro-magnetic pump which is designed to drive liquid Li flow from a collector at the bottom of limiter into a distributor at its top, and thus supply a continuously flowing liquid Li film to the wetted plasma-facing surface. This paper focuses on the major design elements of the FLiLi limiter. In addition, a simulation of incoming heat flux has shown that the distribution of heat flux on the limiter surface is acceptable for a future test of power extraction on EAST.

  7. Investigation of physical processes limiting plasma density in H-mode on DIII-D

    SciTech Connect (OSTI)

    Maingi, R.; Mahdavi, M.A.; Jernigan, T.C.

    1996-12-01

    A series of experiments was conducted on the DIII-D tokamak to investigate the physical processes which limit density in high confinement mode (H-mode) discharges. The typical H-mode to low confinement mode (L-mode) transition limit at high density near the empirical Greenwald density limit was avoided by divertor pumping, which reduced divertor neutral pressure and prevented formation of a high density, intense radiation zone (MARFE) near the X-point. It was determined that the density decay time after pellet injection was independent of density relative to the Greenwald limit and increased non-linearly with the plasma current. Magnetohydrodynamic (MHD) activity in pellet-fueled plasmas was observed at all power levels, and often caused unacceptable confinement degradation, except when the neutral beam injected (NBI) power was {le} 3 MW. Formation of MARFEs on closed field lines was avoided with low safety factor (q) operation but was observed at high q, qualitatively consistent with theory. By using pellet fueling and optimizing discharge parameters to avoid each of these limits, an operational space was accessed in which density {approximately} 1.5 {times} Greenwald limit was achieved for 600 ms, and good H-mode confinement was maintained for 300 ms of the density flattop. More significantly, the density was successfully increased to the limit where a central radiative collapse was observed, the most fundamental density limit in tokamaks.

  8. Diesel Particulate Filters and NO2 Emission Limits | Department of Energy

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

    Filters and NO2 Emission Limits Diesel Particulate Filters and NO2 Emission Limits EPAs New air quality standards for NO2 will impact future DPF designs PDF icon deer09_ibrahim.pdf More Documents & Publications RYPOS - An Actively Regenerated DPF that Demonstrates Significant NO2 Reduction Emission Controls for Heavy-Duty Trucks RYPOS Trap Field Demonstrations Part 1

  9. Probability of Future Observations Exceeding One-Sided, Normal, Upper Tolerance Limits

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

    Edwards, Timothy S.

    2014-10-29

    Normal tolerance limits are frequently used in dynamic environments specifications of aerospace systems as a method to account for aleatory variability in the environments. Upper tolerance limits, when used in this way, are computed from records of the environment and used to enforce conservatism in the specification by describing upper extreme values the environment may take in the future. Components and systems are designed to withstand these extreme loads to ensure they do not fail under normal use conditions. The degree of conservatism in the upper tolerance limits is controlled by specifying the coverage and confidence level (usually written inmore » “coverage/confidence” form). Moreover, in high-consequence systems it is common to specify tolerance limits at 95% or 99% coverage and confidence at the 50% or 90% level. Despite the ubiquity of upper tolerance limits in the aerospace community, analysts and decision-makers frequently misinterpret their meaning. The misinterpretation extends into the standards that govern much of the acceptance and qualification of commercial and government aerospace systems. As a result, the risk of a future observation of the environment exceeding the upper tolerance limit is sometimes significantly underestimated by decision makers. This note explains the meaning of upper tolerance limits and a related measure, the upper prediction limit. So, the objective of this work is to clarify the probability of exceeding these limits in flight so that decision-makers can better understand the risk associated with exceeding design and test levels during flight and balance the cost of design and development with that of mission failure.« less

  10. Performance limits for exo-clutter Ground Moving Target Indicator (GMTI) radar.

    SciTech Connect (OSTI)

    Doerry, Armin Walter

    2010-09-01

    The performance of a Ground Moving Target Indicator (GMTI) radar system depends on a variety of factors, many which are interdependent in some manner. It is often difficult to 'get your arms around' the problem of ascertaining achievable performance limits, and yet those limits exist and are dictated by physics. This report identifies and explores those limits, and how they depend on hardware system parameters and environmental conditions. Ultimately, this leads to a characterization of parameters that offer optimum performance for the overall GMTI radar system. While the information herein is not new to the literature, its collection into a single report hopes to offer some value in reducing the 'seek time'.

  11. Phase stability limit of c-BN under hydrostatic and non-hydrostatic pressure conditions

    SciTech Connect (OSTI)

    Xiao, Jianwei; Du, Jinglian; Wen, Bin, E-mail: wenbin@ysu.edu.cn; Zhang, Xiangyi [State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004 (China)] [State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004 (China); Melnik, Roderick [M2NeT Lab, Wilfrid Laurier University, Waterloo25, 75 University Ave. West, Ontario, Canada N2L 3C5 (Canada)] [M2NeT Lab, Wilfrid Laurier University, Waterloo25, 75 University Ave. West, Ontario, Canada N2L 3C5 (Canada); Kawazoe, Yoshiyuki [New Industry Creation Hatchery Center, Tohoku University, 6-6-4 Aramaki-aza-Aoba, Aoba-ku, Sendai 980-8579, Japan and Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, 1, Lavyrentyev Avenue, Novosibirsk 630090 (Russian Federation)] [New Industry Creation Hatchery Center, Tohoku University, 6-6-4 Aramaki-aza-Aoba, Aoba-ku, Sendai 980-8579, Japan and Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, 1, Lavyrentyev Avenue, Novosibirsk 630090 (Russian Federation)

    2014-04-28

    Phase stability limit of cubic boron nitride (c-BN) has been investigated by the crystal structure search technique. It indicated that this limit is ?1000 GPa at hydrostatic pressure condition. Above this pressure, c-BN turns into a metastable phase with respect to rocksalt type boron nitride (rs-BN). However, rs-BN cannot be retained at 0 GPa owing to its instability at pressure below 250 GPa. For non-hydrostatic pressure conditions, the phase stability limit of c-BN is substantially lower than that under hydrostatic pressure conditions and it is also dramatically different for other pressure mode.

  12. Transport simulations of a density limit in radiation-dominated tokamak discharges: II

    SciTech Connect (OSTI)

    Stotler, D.P.

    1991-05-01

    The procedures developed previously to simulate the radiatively induced tokamak density limit are used to examine in more detail the scaling of the density limit. It is found that the maximum allowable density increases with auxiliary power and decreases with impurity concentration. However, it is demonstrated that there is little dependence of the density limit on plasma elongation. These trends are consistent with experimental results. Our previous work used coronal equilibrium impurities; the primary result of that paper was that the maximum density increases with current when peaked profiles are assumed. Here, this behavior is shown to occur with a coronal nonequilibrium impurity as well. 26 refs., 4 figs.

  13. Title 10 USC 2684a Agreements to Limit Encroachments and Other...

    Open Energy Info (EERE)

    10 USC 2684a Agreements to Limit Encroachments and Other Constraints on Military Training, Testing, and Operations Jump to: navigation, search OpenEI Reference LibraryAdd to...

  14. Structure constant of twist-2 light-ray operators in the Regge limit

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

    Balitsky, Ian; Kazakov, Vladimir; Sobko, Evgeny

    2016-03-11

    We compute the correlation function of three twist-2 operators in N = 4 SYM in the leading BFKL approximation at any Nc. In this limit, the result is applicable to other gauge theories, including QCD.

  15. Quantum-projection-noise-limited interferometry with coherent atoms in a Ramsey-type setup

    SciTech Connect (OSTI)

    Doering, D.; McDonald, G.; Debs, J. E.; Figl, C.; Altin, P. A.; Bachor, H.-A.; Robins, N. P.; Close, J. D. [Australian Research Council Centre of Excellence for Quantum-Atom Optics, Australian National University, Canberra, 0200 (Australia); Department of Quantum Science, Research School of Physics and Engineering, Australian National University, Canberra, 0200 (Australia)

    2010-04-15

    Every measurement of the population in an uncorrelated ensemble of two-level systems is limited by what is known as the quantum projection noise limit. Here, we present quantum-projection-noise-limited performance of a Ramsey-type interferometer using freely propagating coherent atoms. The experimental setup is based on an electro-optic modulator in an inherently stable Sagnac interferometer, optically coupling the two interfering atomic states via a two-photon Raman transition. Going beyond the quantum projection noise limit requires the use of reduced quantum uncertainty (squeezed) states. The experiment described demonstrates atom interferometry at the fundamental noise level and allows the observation of possible squeezing effects in an atom laser, potentially leading to improved sensitivity in atom interferometers.

  16. ORS 522.135 Permit Time Limit for Action, Grounds for Issuance...

    Open Energy Info (EERE)

    135 Permit Time Limit for Action, Grounds for Issuance, Conditions, and Fees for Geothermal Resources Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal...

  17. Estimating Heat and Mass Transfer Processes in Green Roof Systems: Current Modeling Capabilities and Limitations (Presentation)

    SciTech Connect (OSTI)

    Tabares Velasco, P. C.

    2011-04-01

    This presentation discusses estimating heat and mass transfer processes in green roof systems: current modeling capabilities and limitations. Green roofs are 'specialized roofing systems that support vegetation growth on rooftops.'

  18. Title 40 CFR 1506.1 Limitations On Actions During NEPA Process...

    Open Energy Info (EERE)

    .1 Limitations On Actions During NEPA Process Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- Federal RegulationFederal Regulation: Title 40 CFR...

  19. NEW LIMITS ON EARLY DARK ENERGY FROM THE SOUTH POLE TELESCOPE...

    Office of Scientific and Technical Information (OSTI)

    We find a strong upper limit on the EDE density of Omegasub e < 0.018 at 95% ... Authors: Reichardt, C. L. 1 ; De Putter, R. 2 ; Zahn, O. 3 ; Hou, Z., E-mail: ...

  20. Survey Date Agent CAS Limit Type TWA/STEL/Excur % OEL OEL Air...

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

    Personal Sampling Data 05-2005 through 12-2007 05272015 Survey Date Agent CAS Limit Type TWASTELExcur % OEL OEL Air Conc Farm Specific Location Work Activity Required Analysis...

  1. 23 V.S.A. Section 1392 Gross Weight Limits on Highways | Open...

    Open Energy Info (EERE)

    Section 1392 Gross Weight Limits on HighwaysLegal Abstract Statute establishes the motor vehicle weight, load size, not to exceed 80,000 pounds without a permit. Published NA...

  2. Waiver of the Bi-Weekly Pay L:imitation for Emergency Response Activities

    Broader source: Energy.gov [DOE]

    Heads of Departmental elements, with the concurrence of their servicing Human Resources staff, are authorized to waive the bi-weekly pay limitation for employees engaged in emergency response...

  3. Kakira Sugar Works (1985) Limited, Kakira biomass cogeneration: Volume 3 -- Final report. Export trade information

    SciTech Connect (OSTI)

    1998-06-01

    This report, conducted by John H. Payne, Inc., was funded by the US Trade and Development Agency. The study concerns the technical and financial feasibility of the Kakira Sugar Works Limited to increase its capacity to 5,000 TCD and to sell its surplus power to the Uganda Electricity Board. This is Volume 3, the Purchase Energy Contract between Kakira Cogeneration Company Limited and Uganda Electricity Board.

  4. Mark Caffarey, UMICORE, "Opportunities and Limits to Recycling of Critical

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

    Materials for Clean Energies | Department of Energy Mark Caffarey, UMICORE, "Opportunities and Limits to Recycling of Critical Materials for Clean Energies Mark Caffarey, UMICORE, "Opportunities and Limits to Recycling of Critical Materials for Clean Energies Office presentation icon Session_C4_Caffarey.ppt More Documents & Publications Rapporteurs Report: Tom Lograsso, Ames Laboratory and Nick Morley, Oakdene Hollins 2010 Critical Materials Strategy Michael Heine, SGL Group -

  5. EERE Success Story-Reaching New Limits with Solar Storage | Department of

    Energy Savers [EERE]

    Energy Reaching New Limits with Solar Storage EERE Success Story-Reaching New Limits with Solar Storage February 25, 2016 - 10:49am Addthis Sunlight reflected from heliostats is shining directly on the particle receiver, which is currently being tested on top of the solar tower at the National Solar Thermal Test Facility. Sunlight reflected from heliostats is shining directly on the particle receiver, which is currently being tested on top of the solar tower at the National Solar Thermal

  6. Determination of the Limits of Quasi-Static and Dynamic Solutions for

    Office of Scientific and Technical Information (OSTI)

    Problems with Frictional Interfaces. (Journal Article) | SciTech Connect Journal Article: Determination of the Limits of Quasi-Static and Dynamic Solutions for Problems with Frictional Interfaces. Citation Details In-Document Search Title: Determination of the Limits of Quasi-Static and Dynamic Solutions for Problems with Frictional Interfaces. Abstract not provided. Authors: Brake, Matthew Robert ; Hills, David A. Publication Date: 2013-07-01 OSTI Identifier: 1106209 Report Number(s):

  7. Experimental Evidence for Self-Limiting Reactive Flow through a Fractured

    Office of Scientific and Technical Information (OSTI)

    Cement Core: Implications for Time-Dependent Wellbore Leakage (Journal Article) | SciTech Connect Experimental Evidence for Self-Limiting Reactive Flow through a Fractured Cement Core: Implications for Time-Dependent Wellbore Leakage Citation Details In-Document Search Title: Experimental Evidence for Self-Limiting Reactive Flow through a Fractured Cement Core: Implications for Time-Dependent Wellbore Leakage We present a set of reactive transport experiments in cement fractures. The

  8. Comments on Emergency Order to Resume Limited Operation at the Potomac

    Energy Savers [EERE]

    River Generating Station, Alexandria, VA from the Chesapeake Climate Action Network. | Department of Energy on Emergency Order to Resume Limited Operation at the Potomac River Generating Station, Alexandria, VA from the Chesapeake Climate Action Network. Comments on Emergency Order to Resume Limited Operation at the Potomac River Generating Station, Alexandria, VA from the Chesapeake Climate Action Network. Docket No. EO-05-01: This letter is in response to the Department of Energy Emergency

  9. Redefining the Limits of Photovoltaic Efficiency | U.S. DOE Office of

    Office of Science (SC) Website

    Science (SC) "Redefining the Limits of Photovoltaic Efficiency" workshop, July 29, 2012 Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events EFRC News EFRC Events DOE Announcements Publications History Contact BES Home 06.22.12 "Redefining the Limits of Photovoltaic Efficiency" workshop, July 29, 2012 Print Text Size: A A A Subscribe FeedbackShare Page The Light-Material Interactions in Energy Conversion EFRC is

  10. The tokamak density limit: A thermo-resistive disruption mechanism (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect The tokamak density limit: A thermo-resistive disruption mechanism Citation Details In-Document Search This content will become publicly available on June 10, 2016 Title: The tokamak density limit: A thermo-resistive disruption mechanism Authors: Gates, D. A. [1] ; Brennan, D. P. [1] ; Delgado-Aparicio, L. [1] ; White, R. B. [1] + Show Author Affiliations Plasma Physics Laboratory, Princeton University, P.O. Box 451, Princeton, New Jersey 08543, USA Publication

  11. Can Future Emissions Limits be Met with a Hybrid EGR System Alone? |

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

    Department of Energy Future Emissions Limits be Met with a Hybrid EGR System Alone? Can Future Emissions Limits be Met with a Hybrid EGR System Alone? Presents application of hybrid EGR system in terms of deliverable EGR-rate, air/fuel ratio, pumping losses and fuel use, taking into account interaction between EGR and boosting technology. Control strategies and hardware optimized parameters and reduced costs. PDF icon deer08_czarnowski.pdf More Documents & Publications Control Strategy

  12. Enforcement Guidance Supplement 99-03: Limitation of 10 CFR Part 830 to

    Office of Environmental Management (EM)

    Equipment Referenced in the Safety Analysis Report | Department of Energy 99-03: Limitation of 10 CFR Part 830 to Equipment Referenced in the Safety Analysis Report Enforcement Guidance Supplement 99-03: Limitation of 10 CFR Part 830 to Equipment Referenced in the Safety Analysis Report Recently this Office received a reply to a Preliminary Notice of Violation (PNOV), although not denying any facts or conclusions in the PNOV and agreeing to pay the full imposed Civil Penalty, included

  13. Limiting electron beam current for cyclic induction acceleration in a constant guide field

    SciTech Connect (OSTI)

    Kanunnikov, V.N.

    1982-09-01

    Theoretical relations are derived for the limiting beam current in a cyclic induction accelerator (CIA) with a constant guide field. The calculations are in agreement with the available experimental data. It is shown that the limiting average beam current in a CIA is of the order of 100 microamperes, i.e., the level attained in microtrons and linear accelerators. The CIA may find industrial applications.

  14. Detailed numerical investigation of the Bohm limit in cosmic ray diffusion theory

    SciTech Connect (OSTI)

    Hussein, M.; Shalchi, A. E-mail: andreasm4@yahoo.com

    2014-04-10

    A standard model in cosmic ray diffusion theory is the so-called Bohm limit in which the particle mean free path is assumed to be equal to the Larmor radius. This type of diffusion is often employed to model the propagation and acceleration of energetic particles. However, recent analytical and numerical work has shown that standard Bohm diffusion is not realistic. In the present paper, we perform test-particle simulations to explore particle diffusion in the strong turbulence limit in which the wave field is much stronger than the mean magnetic field. We show that there is indeed a lower limit of the particle mean free path along the mean field. In this limit, the mean free path is directly proportional to the unperturbed Larmor radius like in the traditional Bohm limit, but it is reduced by the factor ?B/B {sub 0} where B {sub 0} is the mean field and ?B the turbulent field. Although we focus on parallel diffusion, we also explore diffusion across the mean field in the strong turbulence limit.

  15. Limits on gamma-ray burst prompt radio emission using the LWA1

    SciTech Connect (OSTI)

    Obenberger, K. S.; Taylor, G. B.; Craig, J.; Dowell, J.; Henning, P. A.; Schinzel, F. K. [Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131 (United States); Hartman, J. M. [NASA Jet Propulsion Laboratory, Pasadena, CA 91109 (United States); Helmboldt, J. F.; Wilson, T. L. [US Naval Research Laboratory, Code 7213, Washington, DC 20375 (United States)

    2014-04-10

    As a backend to the first station of the Long Wavelength Array (LWA1), the Prototype All Sky Imager has been imaging the sky > 26 declination during 34 gamma-ray bursts (GRBs) between 2012 January and 2013 May. Using this data, we were able to put the most stringent limits to date on prompt low-frequency emission from GRBs. While our limits depend on the zenith angle of the observed GRB, we estimate a 1? rms sensitivity of 68, 65, and 70 Jy for 5 s integrations at 37.9, 52.0, and 74.0 MHz at zenith. These limits are relevant for pulses ?5 s and are limited by dispersion smearing. For 5 s pulses, we are limited to dispersion measures (DMs) ? 220, 570, and 1600 pc cm{sup 3} for the frequencies above. For pulses lasting longer than 5 s, the DM limits increase linearly with the duration of the pulse. We also report two interesting transients, which are, as of yet, of unknown origin and are not coincident with any known GRBs. For general transients, we give rate density limits of ?7.5 10{sup 3}, 2.9 10{sup 2}, and 1.4 10{sup 2} yr{sup 1} deg{sup 2} with pulse energy densities >1.3 10{sup 22}, 1.1 10{sup 22}, and 1.4 10{sup 22} J m{sup 2} Hz{sup 1} and pulse widths of 5 s at the frequencies given above.

  16. Limits on the thermal energy release from radioactive wastes in a mined geologic repository

    SciTech Connect (OSTI)

    Scott, J.A.

    1983-03-01

    The theraml energy release of nuclear wastes is a major factor in the design of geologic repositories. Thermal limits need to be placed on various aspets of the geologic waste disposal system to avoid or retard the degradation of repository performance because of increased temperatures. The thermal limits in current use today are summarized in this report. These limits are placed in a hierarchial structure of thermal criteria consistent with the failure mechanism they are trying to prevent. The thermal criteria hierarchy is used to evaluate the thermal performance of a sample repository design. The design consists of disassembled BWR spent fuel, aged 10 years, close packed in a carbon steel canister with 15 cm of crushed salt backfill. The medium is bedded salt. The most-restrictive temperature for this design is the spent-fuel centerline temperature limit of 300/sup 0/C. A sensitivity study on the effects of additional cooling prior to disposal on repository thermal limits and design is performed.

  17. Indirectly sensing accelerator beam currents for limiting maximum beam current magnitude

    DOE Patents [OSTI]

    Bogaty, J.M.; Clifft, B.E.; Bollinger, L.M.

    1995-08-08

    A beam current limiter is disclosed for sensing and limiting the beam current in a particle accelerator, such as a cyclotron or linear accelerator, used in scientific research and medical treatment. A pair of independently operable capacitive electrodes sense the passage of charged particle bunches to develop an RF signal indicative of the beam current magnitude produced at the output of a bunched beam accelerator. The RF signal produced by each sensing electrode is converted to a variable DC voltage indicative of the beam current magnitude. The variable DC voltages thus developed are compared to each other to verify proper system function and are further compared to known references to detect beam currents in excess of pre-established limits. In the event of a system malfunction, or if the detected beam current exceeds pre-established limits, the beam current limiter automatically inhibits further accelerator operation. A high Q tank circuit associated with each sensing electrode provides a narrow system bandwidth to reduce noise and enhance dynamic range. System linearity is provided by injecting, into each sensing electrode, an RF signal that is offset from the bunching frequency by a pre-determined beat frequency to ensure that subsequent rectifying diodes operate in a linear response region. The system thus provides a large dynamic range in combination with good linearity. 6 figs.

  18. Indirectly sensing accelerator beam currents for limiting maximum beam current magnitude

    DOE Patents [OSTI]

    Bogaty, John M. (Lombard, IL); Clifft, Benny E. (Park Forest, IL); Bollinger, Lowell M. (Downers Grove, IL)

    1995-01-01

    A beam current limiter for sensing and limiting the beam current in a particle accelerator, such as a cyclotron or linear accelerator, used in scientific research and medical treatment. A pair of independently operable capacitive electrodes sense the passage of charged particle bunches to develop an RF signal indicative of the beam current magnitude produced at the output of a bunched beam accelerator. The RF signal produced by each sensing electrode is converted to a variable DC voltage indicative of the beam current magnitude. The variable DC voltages thus developed are compared to each other to verify proper system function and are further compared to known references to detect beam currents in excess of pre-established limits. In the event of a system malfunction, or if the detected beam current exceeds pre-established limits, the beam current limiter automatically inhibits further accelerator operation. A high Q tank circuit associated with each sensing electrode provides a narrow system bandwidth to reduce noise and enhance dynamic range. System linearity is provided by injecting, into each sensing electrode, an RF signal that is offset from the bunching frequency by a pre-determined beat frequency to ensure that subsequent rectifying diodes operate in a linear response region. The system thus provides a large dynamic range in combination with good linearity.

  19. Determination of operating limits for radionuclides for a proposed landfill at Paducah Gaseous Diffusion Plant

    SciTech Connect (OSTI)

    Wang, J.C.; Lee, D.W.; Ketelle, R.H.; Lee, R.R.; Kocher, D.C.

    1994-05-24

    The operating limits for radionuclides in sanitary and industrial wastes were determined for a proposed landfill at the Paducah Gaseous Diffusion Plant (PGDP), Kentucky. These limits, which may be very small but nonzero, are not mandated by law or regulation but are needed for rational operation. The approach was based on analyses of the potential contamination of groundwater at the plant boundary and the potential exposure to radioactivity of an intruder at the landfill after closure. The groundwater analysis includes (1) a source model describing the disposal of waste and the release of radionuclides from waste to the groundwater, (2) site-specific groundwater flow and contaminant transport calculations, and (3) calculations of operating limits from the dose limit and conversion factors. The intruder analysis includes pathways through ingestion of contaminated vegetables and soil, external exposure to contaminated soil, and inhalation of suspended activity from contaminated soil particles. In both analyses, a limit on annual effective dose equivalent of 4 mrem (0.04 mSv) was adopted. The intended application of the results is to refine the radiological monitoring standards employed by the PGDP Health Physics personnel to determine what constitutes radioactive wastes, with concurrence of the Commonwealth of Kentucky.

  20. Operating limit study for the proposed solid waste landfill at Paducah Gaseous Diffusion Plant

    SciTech Connect (OSTI)

    Lee, D.W.; Wang, J.C.; Kocher, D.C.

    1995-06-01

    A proposed solid waste landfill at Paducah Gaseous Diffusion Plant (PGDP) would accept wastes generated during normal operations that are identified as non-radioactive. These wastes may include small amounts of radioactive material from incidental contamination during plant operations. A site-specific analysis of the new solid waste landfill is presented to determine a proposed operating limit that will allow for waste disposal operations to occur such that protection of public health and the environment from the presence of incidentally contaminated waste materials can be assured. Performance objectives for disposal were defined from existing regulatory guidance to establish reasonable dose limits for protection of public health and the environment. Waste concentration limits were determined consistent with these performance objectives for the protection of off-site individuals and inadvertent intruders who might be directly exposed to disposed wastes. Exposures of off-site individuals were estimated using a conservative, site-specific model of the groundwater transport of contamination from the wastes. Direct intrusion was analyzed using an agricultural homesteader scenario. The most limiting concentrations from direct intrusion or groundwater transport were used to establish the concentration limits for radionuclides likely to be present in PGDP wastes.