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※ 半角英数字
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原子力施設の地震リスク評価の高度化に関する研究,1; 全体計画と新たな数学的枠組みの構築

Study on reliability enhancement of seismic risk assessment of NPP, 1; Program plan and development of new framework of probabilistic models

村松 健*; 古屋 治*; 藤本 滋*; 平野 光将*; 牟田 仁*; 高田 毅士*  ; 糸井 達哉*; 西田 明美  ; 内山 智曜*

Muramatsu, Ken*; Furuya, Osamu*; Fujimoto, Shigeru*; Hirano, Mitsumasa*; Muta, Hitoshi*; Takada, Tsuyoshi*; Itoi, Tatsuya*; Nishida, Akemi; Uchiyama, Tomoaki*

文部科学省受託研究として、地震PRAに伴う不確実さをより適切に取り扱うための新たな数学的枠組みと専門知を活用したフラジリティ評価の手法を検討・提案するとともに、その適用に必要な地震時システム信頼性解析用計算コードを開発することにより、地震PRAの信頼度を向上させ、活用促進に資することを目的とする研究を開始した。本報では、その1として、研究の全体計画と地震PRAの新たな数学的枠組みの検討状況を報告する。

This project, focusing on uncertainty assessment framework and utilization of expertise, and finally developing relevant computer codes to improve reliability of seismic probabilistic risk assessment (SPRA) and to promote its further use of the SPRA, develops methodology for quantification of uncertainty associated with final results from SPRA in the framework of risk management of NPP facilities. The following scopes are set. (1) Development of framework of probabilistic models for uncertainty quantification and Computer codes (2) Aggregation of expert opinion on structure/equipment fragility estimation and development of implementation guidance on epistemic uncertainty (modeling uncertainty) (3) Study on applicability of SPRA to model plant. In this report, program plan of our research and new probabilistic models and treatment of epistemic uncertainty will be explained as part 1.

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