An Evaluation of Safeguards Approaches for Neptunium

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概要

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• The International Atomic Energy Agency has recently drawn attention to the fact that neptunium (Np), a byproduct of the nuclear power industry, can be used to make nuclear weapons. Current monitoring approaches for Np do not rely on material balance accounting as is used for uranium and plutonium. In the future this may change. Although full material balance accounting is not anticipated for Np, it is informative to evaluate the impact and benefit of full material balance accounting when considering other options. Therefore, this paper will apply systems analysis to evaluate ways to convert the current system to full materials balance accounting that will minimize the intrusiveness of the verification system and minimize costs to both the facility operator and the inspection agency. We then compare full material balance accounting to partial material balance accounting and to a ratio-monitoring technique referred to as flow sheet verification. We conclude that sampling approximately 25% of the batches is likely to be adequate and that Pu (or perhaps 137Cs) will be the most effective surrogate for estimating the Np in the input accountability tank.

• 社団法人 日本原子力学会の論文
• 2001-03-25

著者

• Burr Tom

  Safeguards Systems Group Los Alamos National Laboratory

• STANBRO William

  Safeguards Systems Group, Los Alamos National Laboratory

• CHARLTON William

  University of Texas, Austin

• Stanbro William

  Safeguards Systems Group Los Alamos National Laboratory

• Charlton William

  University Of Texas Austin

関連論文

• An Evaluation of Safeguards Approaches for Neptunium

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