DEVELOPMENT OF EVALUATION METHOD FOR SEISMIC ISOLATION SYSTEMS OF NUCLEAR POWER FACILITIES -SEISMIC PRA FOR THE SEISMIC ISOLATED NUCLEAR PLANT-

摘要

This study is part of a series titled 'Development of an evaluation method for seismic isolation systems of nuclear power facilities'. In this study, a seismic level 1 probabilistic risk assessment (PRA) was performed for a nuclear power plant equipped with a seismic isolation system in order to evaluate its effects under the design basis and also design extension conditions. The study also clarifies the risk feature of the seismically isolated plant and suggests ways to improve the plant reliability by comparing the results of PRA with those of a conventional nuclear power plant.