摘要
福岛核事故后,核安全当局及核电业界对外部水淹事故可能对核电厂造成的安全影响重新进行了定位。目前,国内二代核电厂采用的事故处理规程体系中并无专门针对外部水淹事故的处理策略。本文针对国内某典型二代在役核电厂,采用洪水裕度分析(FMA)分析方法对其发生外部水淹事故时核安全的影响进行了初步分析。结合电厂保护系统及专设安全设施设计,选取了可将反应堆成功退防至安全停堆状态的事故处理关键成功路径。在对所选取路径涉及设备进行分析后,最终评估得出该核电厂所具备的关键成功路径及对应的防外部水淹能力,为日后通过改进相关设施以提高电厂防外部水淹提供了技术支撑。
Nuclear authority and endusers have reviewed the safety related impact of external flooding accident on nuclear power plant after Fukushima NPP accident. The present emergency operation procedures which are used in domestic second generation NPP, are not include the special procedure to deal with external flooding accident. This paper analyse the nuclear safety impact of external flooding accident on one domestic second generation NPP by flooding margin analysis （FMA）. Based on the design of the protection system and engineered safety features, several successful path are selected that could bring the plant to a stable condition and maintain that condition. The capablity of anti-external flooding can be confirmed by the analysis of equipments in the key successful path, and offer technical supports for the improvement of anti- external flooding capability of a nuclear power plant.
出处
《核科学与工程》
CSCD
北大核心
2015年第3期519-524,共6页
Nuclear Science and Engineering
关键词
外部水淹分析
成功路径
FMA
external flooding analysis
successful path
FMA
