高温气冷堆地震丧失厂外电的风险评价  

Risk Assessment of Seismic Loss-of-offsite-power for High Temperature Gas-cooled Reactor

作　　者：姜卓尔 赵军[1,2,3] 王海涛[1,2,3] 史力[1,2,3] JIANG Zhuoer;ZHAO Jun;WANG Haitao;SHI Li(Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing 100084,China;Collaborative Innovation Center of Advanced Nuclear Energy Technology,Beijing 100084,China;Key Laboratory of Advanced Reactor Engineering and Safety,Ministry of Education,Beijing 100084,China)

机构地区：[1]清华大学核能与新能源技术研究院,北京100084 [2]教育部先进核能技术协同创新中心,北京100084 [3]先进反应堆工程与安全教育部重点实验室,北京100084

出　　处：《原子能科学技术》2021年第10期1814-1820,共7页Atomic Energy Science and Technology

基　　金：国家科技重大专项(2018ZX06902015)。

摘　　要：地震导致丧失厂外电是核电厂地震情况下的典型始发事件。本研究使用地震概率安全分析方法,以高温气冷堆为研究对象,得到其在地震丧失厂外电事故下的风险水平。研究范围包括分析地震导致丧失厂外电的事故发展情景分析,筛选地震设备清单并结合现场巡访进行调整,建立地震导致丧失厂外电的风险评价模型,并对超过高温气冷堆风险接受准则剂量(概率安全目标)的放射性释放的频率结果进行了间隔分析、割集分析和重要度分析。本文工作可为高温气冷堆的地震概率安全分析在方法实施、建模假设、过程分析等方面提供有益的参考。Seismic loss-of-offsite-power(SLOOP)is a typical seismic initiating event of nuclear power plant(NPP).In this paper,SLOOP risk assessment model of high temperature gas-cooled reactor(HTR)was generated through application of seismic probabilistic safety analysis(SPSA)methods.Studies ranged from analyzing the SLOOP accident developing scenarios,screening the seismic equipment list(SEL)with conducting the walkdown to integrating the tasks for construction of SLOOP model.As the risk level of HTR under SLOOP accident,the radioactivity release above the dosage of the risk acceptance criteria for HTR(the probabilistic safety goal)was then obtained and analyses for seismic interval,minimum cut set and importance measure were made.The results provide useful reference for the methods implementation,modeling assumption and process analysis of SPSA for the HTR.

关 键 词：高温气冷堆 地震概率安全分析 丧失厂外电 

分 类 号：TL364.5[核科学技术—核技术及应用]