Capability of environmental sampling to detect undeclared cask openings

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The goal of this study is to determine the signatures that would allow monitors to detect diversion of nuclear fuel (by a diverter) from a storage area such as a geological repository. Due to the complexity of operations surrounding disposal of spent nuclear fuel in a geologic repository, there are several places that a diversion of fuel could take place. After the canister that contains the fuel rods is breached, the diverter would require a hot cell to process or repackage the fuel. A reference repository and possible diversion scenarios are discussed. When a canister is breached, or during reprocessing ... continued below

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80 p.

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Beckstead, L.W.; Efurd, D.W.; Hemberger, P.H.; Abhold, M.E. & Eccleston, G.W. December 1, 1997.

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Description

The goal of this study is to determine the signatures that would allow monitors to detect diversion of nuclear fuel (by a diverter) from a storage area such as a geological repository. Due to the complexity of operations surrounding disposal of spent nuclear fuel in a geologic repository, there are several places that a diversion of fuel could take place. After the canister that contains the fuel rods is breached, the diverter would require a hot cell to process or repackage the fuel. A reference repository and possible diversion scenarios are discussed. When a canister is breached, or during reprocessing to extract nuclear weapons material (primarily Pu), several important isotopes or signatures including tritium, {sup 85}Kr, and {sup 129}I are released to the surrounding environment and have the potential for analysis. Estimates of release concentrations of the key signatures from the repository under a hypothetical diversion scenario are presented and discussed. Gas analysis data collected from above-ground storage casks at Idaho National Engineering and Environmental Laboratory (INEEL) Test Area North (TAN) are included and discussed in the report. In addition, LANL participated in gas sampling of one TAN cask, the Castor V/21, in July 1997. Results of xenon analysis from the cask gas sample are presented and discussed. The importance of global fallout and recent commercial reprocessing activities and their effects on repository monitoring are discussed. Monitoring and instrumental equipment for analysis of the key signature isotopes are discussed along with limits of detection. A key factor in determining if diversion activities are in progress at a repository is the timeliness of detection and analysis of the signatures. Once a clandestine operation is suspected, analytical data should be collected as quickly as possible to support any evidence of diversion.

Physical Description

80 p.

Notes

INIS; OSTI as DE98004683

Source

  • International Atomic Energy Agency (IAEA) meeting on procedures and techniques for the management of experimental and exotic fuels from research and test reactors, Vienna (Austria), 1-7 Dec 1997

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  • Other: DE98004683
  • Report No.: LA-UR--97-4798
  • Report No.: CONF-971225--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 658162
  • Archival Resource Key: ark:/67531/metadc712360

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  • December 1, 1997

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 21, 2016, 10:14 p.m.

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Beckstead, L.W.; Efurd, D.W.; Hemberger, P.H.; Abhold, M.E. & Eccleston, G.W. Capability of environmental sampling to detect undeclared cask openings, article, December 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc712360/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.