Increase in role of destructive analysis in a new nuclear era

新ニュークリア時代における破壊分析の役割の増大

久野 祐輔

Kuno, Yusuke

中東や朝鮮半島にみられる秘密裏核兵器開発に対し近年国際社会は多くの対策を提案してきたが、そのなかでも現実的かつ効率的な手法にIAEAが提案する環境サンプリングが挙げられる。一方、核燃料サイクルの産業化に伴いその大規模化に対応すべく保障措置の手法も変革しつつある。より的確な計量管理・保障措置検認が求められている。この両者において非常に重要な役割を持つ基盤技術に破壊分析(DA)が挙げられる。本ペーパーでは、DAの現状及び今後の役割について述べる。

Since many clandestine nuclear activities in the Middle East, the Korean peninsula and other areas of the world have been disclosed during the last 15 years, a series of the counter-measures have been proposed and taken. The Destructive Analysis (DA) for environmental sampling for safeguards (ESS), based on the Additional Protocol to the NPT Safeguards Agreement has played very important role since 1990s. Among the verification tools for the comprehensive Safeguards agreement, DA for nuclear material accountancy and its verification is extremely important for drawing quantitative Safeguards conclusions. Nuclear accountancy and verification based on the DA with a state-of-the-art determination technique providing highest possible measurement accuracy is the fundamental and essential technology, without which Safeguards cannot be concluded. This paper describes the role of DA for both environmental sampling and verification of nuclear material accountancy.