Current Status of Seismic Safety Enhancement for BWR Nuclear Power Plants

Abstract

At nuclear power plants, various actions have been conducted to meet the new Japanese regulatory requirements to improve nuclear safety. This paper presents the current status of the seismic design methods and the safety enhancement actions for the BWR nuclear power plants of the Chugoku Electric Power Co., Inc. By way of a representative example, the countermeasures used for Shimane unit No.2 are summarized including the advanced seismic design methods. Also, the future expectations for the development of the seismic design methods are described briefly.