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Proliferation risk assessment for large reprocessing facilities with simulation and modeling

シミュレーションとモデリングによる大型再処理施設の核拡散リスク評価

鈴木 美寿; Demuth, S.*

Suzuki, Mitsutoshi; Demuth, S.*

将来の再処理施設の概念設計において外在的及び内在的対策を策定するために、核物質計量管理の不確実性と同様に拡散行為の起因確率を考慮したパフォーマンスベースの核拡散リスク評価を行った。シミュレーションとモデリングのアプローチを用いて、施設レベルの保障措置性能及び転用経路解析を行った。本方法によって、一般的には傾向分析で調べられる少量分割転用を効率よく検知することができる。

Proliferation risk assessment has been investigated to develop a performance-based approach in which the likelihood of diversion incidence, as well as the uncertainty of nuclear material accounting, is simultaneously considered to install intrinsic and extrinsic countermeasures in a conceptual design of a future reprocessing facility. A simulation and modeling approach has been applied to evaluate safeguards performance in a facility-level and diversion pathway analysis, which is demonstrated to detect more efficiently a small, protracted diversion that is usually investigated by trend analysis.

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