Study on Rating Method of Nuclear Events in Marine Nuclear Power Plant

Abstract

According to the operational safety characteristics of marine nuclear power plant and the nuclear safety rating needs of nuclear ships in case of abnormal events during sea navigation, the rating evaluation standards are established referring to the international nuclear event rating table, which consider three aspects of “radioactive safety impact”, “defense in depth capability impact” and “power output impact” in abnormal events. The potential common cause characteristics of the event are additionally considered. Then the rating procedure for nuclear safety events of marine nuclear power plant is proposed. The study is of great significance for accurately evaluating the severity of abnormal events and effectively guaranteeing nuclear safety of marine nuclear power plant.