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Benchmark evaluation of structural reliability evaluation codes for fast reactors

Takaya, Shigeru  ; Machida, Hideo*; Kamishima, Yoshio*; Asayama, Tai 

This paper describes benchmark evaluation of independently programmed structural reliability evaluation codes, MSS-REAL and GENPRO/PEPPER. First, a procedure of structural reliability evaluation of passive components of fast reactors for a failure due to fatigue-creep interaction damage is explained. The procedure consists of evaluations of crack initiation, crack propagation, and crack penetration or unstable fracture. Next, input data for evaluation of structural reliability of a reactor vessel is prepared. Then, the structural reliability of a reactor vessel is evaluated deterministically and probabilistically. The results estimated by two codes agreed well for both deterministic and probabilistic evaluations, which shows that these codes are programmed properly according to the evaluation procedure.

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