Sensitive Analyses of Probabilistic Fracture Mechanics for Reactor Pressure Vessel during Pressurized Thermal Shock and Comparison with the Results of International Round Robin Analyses in Asian Countries

Yasuhiro Kanto; S. Yoshimura

doi:10.4028/www.scientific.net/KEM.462-463.878

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 462-463Sensitive Analyses of Probabilistic Fracture...

Sensitive Analyses of Probabilistic Fracture Mechanics for Reactor Pressure Vessel during Pressurized Thermal Shock and Comparison with the Results of International Round Robin Analyses in Asian Countries

Abstract:

This paper demonstrates sensitive analyses of probabilistic fracture mechanics (PFM) for reactor pressure vessel (RPV) during pressurized thermal shock (PTS) loading, and comparison of our calculation with the results of the international round robin (RR) analyses in Asian countries (Korea, Taiwan and Japan). The international Round Robin activity was performed in PFM sub-committees in the Atomic Energy Research Committee of Japan Welding Engineering Society (JWES) in conjunction with Korea and Taiwan research groups. The purposes of this program are to establish reliable procedures to evaluate fracture probability of reactor pressure vessels during pressurized thermal shock and to maintain the continuous cooperation among Asian institutes in the probabilistic approach to nuclear safety. Some parameters to RPV failure probabilities are chosen to evaluate their significance quantatively. The differences caused by selection of analyzing programs and some input parameters will be discussed.

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Key Engineering Materials (Volumes 462-463)

Pages:

878-883

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.462-463.878

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Online since:

January 2011

Authors:

Yasuhiro Kanto, S. Yoshimura

Keywords:

Fracture Probability, Pressurized Thermal Shock (PTS), Probabilistic Fracture Mechanics, Reactor Pressure Vessel (RPV), Round Robin, Stress Analysis

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