[1P14-19] Fault Displacement PRA

[1P17] Improvement of Fault Displacement PRA Methodology and Example of its Application to a Hypothetical NPP

(4) Example of Application of Fault Displacement Accident Scenario Identification and Accident Sequence Evaluation Methodology to a Hypothetical NPP

*Futoshi Tanaka¹, Manabu Miyata¹, Ryusuke Haraguchi¹, Kunihiko Sato⁴, Shinichi Yoshida³, Hideaki Tsutsumi², Toshiaki Sakai², Katsumi Ebisawa² (1. MHI, 2. CRIEPI, 3. Obayashi, 4. MHINSS)

Keywords:Fault Displacement PRA, Extenal event risk

The authors have performed an accident scenario evaluation has against a hypothetical PWR plant that consist of buildings, seawater system and severe accident management facility, to demonstrate the feasibility of the PRA method developed. The core damage frequency and its uncertainty have been quantified, and the intensity ranges of the distributed fault displacement that characterize the core damage risk profile were identified for the plant of interest.