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Report No.

Verification of probabilistic fracture mechanics analysis code PASCAL through benchmark analyses with FAVOR

Li, Y.; Uno, Shumpei*; Katsuyama, Jinya; Dickson, T.*; Kirk, M.*

Probabilistic fracture mechanics (PFM) analysis code PASCAL has been developed by the Japan Atomic Energy Agency to evaluate failure frequencies of Japanese reactor pressure vessels (RPVs) during pressurized thermal shock (PTS) events base on Japanese data and Japanese methods published for or prescribed in the Japanese regulations and standards. To verify this code, benchmark analyses were carried out with FAVOR code which was developed in United States and has been utilized in nuclear regulation. Through the benchmark analyses, the applicability of PASCAL in failure frequency evaluation of Japanese RPVs was confirmed with great confidence. The outline of PASCAL, the benchmark analysis conditions and results are provided in this paper.



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