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Nondestructive Neutron And Gamma-Ray Technologies Applied To GNEP And Safeguards

Description: In recent years, LLNL has developed methods for diagnosing significant quantities of special nuclear material (SNM). Homeland security problems have recently focused our attention on detection of shielded highly enriched uranium (HEU), which is a weak signal problem. Current and advanced safeguards applications will require working in the opposite extreme of strong but buried signals. We will review some of the technologies that have been developed at LLNL for homeland security applications and… more
Date: June 27, 2007
Creator: Dougan, A D; Snyderman, N; Ham, Y; Nakae, L; Dietrich, D; Kerr, P et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Implementation of the United States-Russian Highly Enriched Uranium Agreement: Current Status & Prospects

Description: The National Nuclear Security Administration's (NNSA) Highly Enriched Uranium (HEU) Transparency Implementation Program (TIP) monitors and provides assurance that Russian weapons-grade HEU is processed into low enriched uranium (LEU) under the transparency provisions of the 1993 United States (U.S.)-Russian HEU Purchase Agreement. Meeting the Agreement's transparency provisions is not just a program requirement; it is a legal requirement. The HEU Purchase Agreement requires transparency measure… more
Date: July 27, 2004
Creator: R.rutkowski, E; Armantrout, G; Mastal, E; Glaser, J & Benton, J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Deployment and Operation of the ES-3100 Type B Shipping Container

Description: The U.S. Department of Energy (DOE) National Nuclear Security Administration (NNSA) is shipping, for disposition purposes, bulk quantities of fissile materials, primarily highly enriched uranium (HEU). The U.S. Department of Transportation (DOT) specification 6M container has been the workhorse for NNSA and many other shippers of radioactive material since the 1980s. However, the 6M does not conform to the packaging requirements in the Code of Federal Regulations (10 CFR 71) and, for that reaso… more
Date: July 27, 2006
Creator: Arbital, J. G. & Tousley, D. R.: Miller, D. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Unallocated Off-Specification Highly Enriched Uranium: Recommendations for Disposition

Description: The U.S. Department of Energy (DOE) has made significant progress with regard to disposition planning for 174 metric tons (MTU) of surplus Highly Enriched Uranium (HEU). Approximately 55 MTU of this 174 MTU are ''offspec'' HEU. (''Off-spec'' signifies that the isotopic or chemical content of the material does not meet the American Society for Testing and Materials standards for commercial nuclear reactor fuel.) Approximately 33 of the 55 MTU have been allocated to off-spec commercial reactor fu… more
Date: February 27, 2002
Creator: Bridges, D. N.; Boeke, S. G.; Tousley, D. R.; Bickford, W.; Goergen, C.; Williams, W. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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D&D of the French High Enrichment Gaseous Diffusion Plant

Description: This paper describes the D&D program that is being implemented at France's High Enrichment Gaseous Diffusion Plant, which was designed to supply France's Military with Highly Enriched Uranium. This plant was definitively shut down in June 1996, following French President Jacques Chirac's decision to end production of Highly Enriched Uranium and dismantle the corresponding facilities.
Date: February 27, 2003
Creator: Behar, Christophe; Guiberteau, Philippe; Duperret, Bernard & Tauzin, Claude
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Rhode Island Nuclear Science Center conversion from HEU to LEU fuel

Description: The 2-MW Rhode Island Nuclear Science Center (RINSC) open pool reactor was converted from 93% UAL-High Enriched Uranium (HEU) fuel to 20% enrichment U3Si2-AL Low Enriched Uranium (LEU) fuel. The conversion included redesign of the core to a more compact size and the addition of beryllium reflectors and a beryllium flux trap. A significant increase in thermal flux level was achieved due to greater neutron leakage in the new compact core configuration. Following the conversion, a second cooling l… more
Date: September 27, 2000
Creator: Tehan, Terry
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Oralloy Cylindrical Shape Factor and Critical Mass Measurement in Graphite, Paraffin, and Water Tampers

Description: Critical mass of an Oy (93.9%) sphere in graphite is given as a function of graphite tamper thickness. It was shown that approximately 20(in) of graphite is effectively infinite and that the approximately 17(in) used herein is approximately 98% infinite. Critical mass measurements of Oy (93.9%) spheres and cylinders of different diameters are given for approximately 17(in) graphite tamper, for effectively infinite paraffin tamper, and for effectively infinite water tamper. From these measuremen… more
Date: October 27, 1951
Creator: Mallary , E. C.; Paxton, Hugh Campbell & White , R. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

U.S. transparency monitoring of HEU oxide conversion and blending to LEU hexafluoride at three Russian blending plants

Description: The down-blending of Russian highly enriched uranium (HEU) takes place at three Russian gaseous centrifuge enrichment plants. The fluorination of HEU oxide and down-blending of HEU hexafluoride began in 1994, and shipments of low enriched uranium (LEU) hexafluoride product to the United States Enrichment Corporation (USEC) began in 1995 US transparency monitoring under the HEU Purchase Agreement began in 1996 and includes a permanent monitoring presence US transparency monitoring at these facil… more
Date: July 27, 1998
Creator: Leich, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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U.S. Transparency monitoring under the U.S./Russian HEU purchase agreement

Description: The conversion of Highly Enriched Uranium (HEU) metal to low enriched uranium (LEU) takes place at four Russian sites. HEU metal to oxide processing began in 1994 with shipments of HEU oxide from the Siberian Chemical Enterprise (SChE) to the Ural Electrochemical Integrated Plant (UEIP) fluorination and blending facility. U.S. transparency monitoring at these facilities began in February 1996. In 1996, fluorination and blending operations began at the Electrochemical Plant (ECP). In 1997, addit… more
Date: July 27, 1999
Creator: Benton, J.; Dougherth, D. R.; Glaser, J. W. & Thomas, D. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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