地層処分システムの設計・安全評価体系のシステム化に関する研究 -研究概要-

Study on systematic integration technology of design and safety assessment for HLW geological disposal

石原 義尚*; 福井 裕*; 佐川 寛*; 伊藤 隆哉*

Ishihara, Yoshinao*; Fukui, Hiroshi*; Sagawa, Hiroshi*; Ito, Takaya*

本研究では、統合解析システムの開発に資するため、第2次取りまとめに向けて構築されてきた設計・安全評価の体系を整理し、今後の研究開発で得られる成果も考慮した上で、これらを計算機上に展開し、システム化するための設計検討を行った。(1)地層処分システムの設計・性能評価を実施するための共通の作業基盤となる統合解析システムの開発に向けて、地質環境を含む地層処分システムを計算機上に構築(統一環境場の構築方針の策定)するための検討を実施した。(2)第2次取りまとめにおける「処分技術(設計)」および「性能評価」のワーク(評価)項目に対して、その基盤となる技術情報(入出力情報)の対応付けを行い、地層処分システムの設計・安全評価に関する一連の作業をまとめた評価フローを作成した。(3)性能・安全評価の体系化に向けて、今後の地層処分研究における詳細モデル開発に関する課題を抽出し、これらの課題を統合解析システムに取り込むための情報として整理した。

The present study was carried out relating to basic design of the "Geological Disposal Technology Integration System" that will be systematized as knowledge base for analysis and assessment of geological disposal by integrating organically and hierarchically analysis and evaluation method in three study field. The key conclusions are summarized as follows: (1)The examination to construct the virtual geological disposal system which contained the geological environment on the computer was executed aiming at the development of integration and the analysis systems which became working common basic to execute the design and the performance assessment of the geological disposal system. (2)Technological information (I/O information) which became the base was associated with work (evaluation) item of "Disposal technology (design)" and "Performance assessment" in the Second Progress Report by JNC, and the evaluation flow by which a series of work concerning the design and the safety assessment of the geological disposal system was brought together was made. (3)The subject concerning the detailed model development in the R&D activity of the geological disposal system in the future was extracted aiming at the systematization of the performance and safety assessment, and was arranged as information to take these detailed models into the "Geological Disposal Technology Integration System".