摘要
通过研究美国核管理委员会(NRC)和电力研究院(EPRI)的《核电厂的火灾概率风险评价方法》,介绍了核电厂内部火灾概率安全评价(PSA)过程中,各类点火源起火频率的分析方法和步骤。以大亚湾核电厂的主变压器为例,介绍了起火频率的具体分析过程。经定量计算分析,大亚湾核电厂主变压器的起火频率是4.32×10-3/(堆.年),是反应堆堆芯损坏频率(CDF)的203倍。一旦起火,发生破坏性火灾的概率高达83%。
Based on the study on Fire Probabilistic Safety Assessment（PSA） Methodology for Nuclear Power Facilities reported by NRC and EPRI,the methodology for estimating the fire frequencies resulting from various fire sources during the process of fire PSA is introduced,and an example is demonstrated by estimating the fire frequencies of the main transformer in Daya Bay nuclear power plant,which shows its fire frequency is 4.32×10-3 per RY and this is 203 times of the core damage frequency of the reactor.It also shows that once a fire occurred on the transformer,the probability of catastrophic result would be 83%.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2010年第2期76-80,共5页
Nuclear Power Engineering
