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open access

Status report on SHARP coupling framework.

Description: This report presents the software engineering effort under way at ANL towards a comprehensive integrated computational framework (SHARP) for high fidelity simulations of sodium cooled fast reactors. The primary objective of this framework is to provide accurate and flexible analysis tools to nuclear reactor designers by simulating multiphysics phenomena happening in complex reactor geometries. Ideally, the coupling among different physics modules (such as neutronics, thermal-hydraulics, and str… more
Date: May 30, 2008
Creator: Caceres, A.; Tautges, T. J.; Lottes, J.; Fischer, P.; Rabiti, C.; Smith, M. A. et al.
Partner: UNT Libraries Government Documents Department
open access

Status report on fast reactor recycle and impact on geologic disposal.

Description: The GNEP program envisions continuing the use of light-water reactors (LWRs), with the addition of processing the discharged, or spent, LWR fuel to recover actinide and fission product elements, and then recycling the actinide elements in sodium-cooled fast reactors. Previous work has established the relationship between the processing efficiencies of spent LWR fuel, as represented by spent PWR fuel, and the potential increase in repository utilization for the resulting processing waste. The pu… more
Date: October 30, 2007
Creator: Bauer, T. H.; Morris, E. E. & Wigeland, R. A.
Partner: UNT Libraries Government Documents Department
open access

Trip report for field visit to Fayetteville Shale gas wells.

Description: This report describes a visit to several gas well sites in the Fayetteville Shale on August 9, 2007. I met with George Sheffer, Desoto Field Manager for SEECO, Inc. (a large gas producer in Arkansas). We talked in his Conway, Arkansas, office for an hour and a half about the processes and technologies that SEECO uses. We then drove into the field to some of SEECO's properties to see first-hand what the well sites looked like. In 2006, the U.S. Department of Energy's (DOE's) National Energy Tech… more
Date: September 30, 2007
Creator: Veil, J. A. & Division, Environmental Science
Partner: UNT Libraries Government Documents Department
open access

A validation study of existing neutronics tools against ZPPR-21 and ZPPR-15 critical experiments.

Description: A study was performed to validate the existing tools for fast reactor neutronics analysis against previous critical experiments. The six benchmark problems for the ZPPR-21 critical experiments phases A through F specified in the Handbook of Evaluated Criticality Safety Benchmark Experiments were analyzed. Analysis was also performed for three loading configurations of the ZPPR-15 Phase A experiments. As-built core models were developed in XYZ geometries using the reactor loading records and dra… more
Date: September 30, 2007
Creator: Yang, W.S. & Kim, S.J. (Nuclear Engineering Division)
Partner: UNT Libraries Government Documents Department
open access

Impacts of TMDLs on coal-fired power plants.

Description: The Clean Water Act (CWA) includes as one of its goals restoration and maintenance of the chemical, physical, and biological integrity of the Nation's waters. The CWA established various programs to accomplish that goal. Among the programs is a requirement for states to establish water quality standards that will allow protection of the designated uses assigned to each water body. Once those standards are set, state agencies must sample the water bodies to determine if water quality requirement… more
Date: April 30, 2010
Creator: Veil, J. A. & Division, Environmental Science
Partner: UNT Libraries Government Documents Department
open access

Progress report on development of intermediate fidelity full assembly analysis methods.

Description: While high fidelity modeling capabilities for various physics phenomena are being pursued under advanced modeling and simulation initiatives under the DOE Office of Nuclear Energy, they generally rely on high-performance computation facilities and are too expensive to be used for parameter-space exploration or design analysis. One-dimensional system codes have been used for a long time and have reached a degree of maturity, but limit their validity to specific applications. Thus, an intermediat… more
Date: September 30, 2011
Creator: Hu, R. & Fanning, T. H. (Nuclear Engineering Division)
Partner: UNT Libraries Government Documents Department
open access

Well-To-Wheels Analysis of Landfill Gas-Based Pathways and Their Addition to the Greet Model.

Description: Today, approximately 300 million standard cubic ft/day (mmscfd) of natural gas and 1600 MW of electricity are produced from the decomposition of organic waste at 519 U.S. landfills (EPA 2010a). Since landfill gas (LFG) is a renewable resource, this energy is considered renewable. When used as a vehicle fuel, compressed natural gas (CNG) produced from LFG consumes up to 185,000 Btu of fossil fuel and generates from 1.5 to 18.4 kg of carbon dioxide-equivalent (CO{sub 2}e) emissions per million Bt… more
Date: June 30, 2010
Creator: Mintz, M.; Han, J.; Wang, M.; Saricks, C. & Systems, Energy
Partner: UNT Libraries Government Documents Department
open access

ZPR-3 Assembly 11 : A cylindrical sssembly of highly enriched uranium and depleted uranium with an average {sup 235}U enrichment of 12 atom % and a depleted uranium reflector.

Description: Over a period of 30 years, more than a hundred Zero Power Reactor (ZPR) critical assemblies were constructed at Argonne National Laboratory. The ZPR facilities, ZPR-3, ZPR-6, ZPR-9 and ZPPR, were all fast critical assembly facilities. The ZPR critical assemblies were constructed to support fast reactor development, but data from some of these assemblies are also well suited for nuclear data validation and to form the basis for criticality safety benchmarks. A number of the Argonne ZPR/ZPPR crit… more
Date: September 30, 2010
Creator: Lell, R. M.; McKnight, R. D.; Tsiboulia, A.; Rozhikhin, Y.; Security, National & Engineering, Inst. of Physics and Power
Partner: UNT Libraries Government Documents Department
open access

Water management technologies used by Marcellus Shale Gas Producers.

Description: Natural gas represents an important energy source for the United States. According to the U.S. Department of Energy's (DOE's) Energy Information Administration (EIA), about 22% of the country's energy needs are provided by natural gas. Historically, natural gas was produced from conventional vertical wells drilled into porous hydrocarbon-containing formations. During the past decade, operators have increasingly looked to other unconventional sources of natural gas, such as coal bed methane, tig… more
Date: July 30, 2010
Creator: Veil, J. A. & Division, Environmental Science
Partner: UNT Libraries Government Documents Department
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