[1E04-06] Non-proliferation and Safeguards

[1E06] Quantitative analysis of the comprehensive impacts of MAs coexisting with Pu in reprocessing on criticality safety, radiation safety and non-proliferation features

*Masaya Watanabe¹, Hiroshi Sagara¹ (1. Tokyo Institute of Technology)

Keywords:MAs coexistence with Pu in solution forms, criticality safety, radiation safety, non-proliferation features, MA

The quantitative impact analyses of MAs with Pu co-recovered from spent fuel, in reprocessing phase were evaluated on criticality safety, radiation safety and non-proliferation features. At first, the impacts of MAs coexistence with Pu in solution forms on their criticality were evaluated by the reactivity worth simulation. As analytical results, especially ²⁴¹Am contributes to decrease of the reactivity worth. Secondly, the impacts of MAs and residual FPs coexistence with Pu on the effective dose was evaluated. ¹⁵⁴Eu in the residual FPs were the greatest contributor to the effective doses. Thirdly, the impacts of MAs coexistence with Pu on the material attractiveness were quantitatively evaluated to be decreased based on their physical properties.