核电厂电气设备间火灾概率安全分析研究  

Study on Fire Probability Security Analysis of Electrical Equipment Room in Nuclear Power Plant

作　　者：史强[1] 陈海英[1] 胡文超[1] 马帅[1] 宋维[1] SHI Qiang;CHEN Hai-ying;HU Wen-chao;MA Shuai;SONG Wei(Nuclear and Radiation Safety Center,MEP,Beijing,China,100082)

机构地区：[1]环境保护部核与辐射安全中心,北京100082

出　　处：《核科学与工程》2018年第5期860-863,共4页Nuclear Science and Engineering

摘　　要：电气设备间是核电厂火灾风险评价的重要内容之一。本文对典型核电厂的电气设备间进行火灾风险分析,使用事件树方法演绎分析火灾场景并确定火灾场景的危害,最后在核电厂电气设备间火灾序列演绎分析的基础上建立火灾风险评价模型,完成电气设备间火灾风险定量化。火灾演绎分析结果获得了6个火灾场景,分析各火灾场景对核电厂始发事件和系统设备的影响。风险定量化结果表明:电气设备间火灾导致的堆芯损坏频率为1.42×10^(-9)/(堆·年)。Electrical equipment room is one of the important contents of nuclear power plant fire risk assessment.In this paper,the risk analysis of fire between electrical equipment in typical NPPs is carried out.Event tree method is used to deduce and analyze the fire scenarios and identify the hazards of fire scenarios.Finally,a fire risk assessment model is established on the basis of internal event PSA model of nuclear power plants,Fire risk quantification.Fire interpretation of the results obtained six fire scenarios,analysis of the various fire scenarios on the nuclear power plant events and system equipment.Risk quantification results show that the frequency of core damage caused by fires between electrical equipment is 1.42E-9/(reactor·year).

关 键 词：电气设备间 火灾风险分析 火灾场景 堆芯损坏频率 

分 类 号：TL364[核科学技术—核技术及应用]