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Quantitative comparison study on nuclear nonproliferation for plutonium in spent fuel direct disposal and recycle use

直接処分およびリサイクル利用後の使用済燃料におけるプルトニウムの核不拡散性の定量比較研究

久野 祐輔; 原 大輔*

Kuno, Yusuke; Hara, Daisuke*

直接処分およびリサイクルから発生するプルトニウムについて核拡散抵抗性の定量的な比較評価を行った。放射線量、化学・物理形態、核物質量を経時的に変化させた改良型のFOM式を提案し評価した。軽水炉、1サイクル、2サイクル利用のMOX-LWR、高速炉それぞれから得られる使用済燃料について評価した結果、FOM値(魅力度値)に顕著な差が見出された。

Comparison study of material-oriented Proliferation Resistance (PR) for plutonium in spent fuels resulting from both cases of direct disposal and recycle use is quantitatively made. The extended the figure-of-merit (FOM) described in term of time was used, where dose of actual spent fuels and their chemical/physical properties, and material quantity are additionally considered to the original FOM. This case study on spent fuels from LWR, once/twice recycles with MOX-LWR and Fast Reactor showed significant differences on FOM (attractiveness) among them.

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