全厂断电情景下M310核电厂缓解措施分析  

Analysis on Mitigation Measures of M310 Type NPP in SBO Accident

作　　者：周克峰[1] 郑继业[1] 冯进军[1] 石俊英[1] 俞尔俊[1] 

机构地区：[1]环境保护部核与辐射安全中心,北京100082

出　　处：《原子能科学技术》2014年第8期1464-1472,共9页Atomic Energy Science and Technology

摘　　要：全厂断电(SBO)是可能导致核电厂严重事故的典型初因事件。为研究国内M310系列核电厂应对全厂断电事故的能力,并综合考虑福岛改进行动的要求,使用严重事故分析程序MELCOR开展SBO事故缓解能力分析。通过研究主泵轴封,汽动辅助给水,一、二回路补水等因素,并考虑设备可用性及可到达时间,给出了影响全厂断电事故进程的关键环节。分析结果表明,改进后的M310系列核电厂可有效缓解全厂断电事故,使反应堆冷却至可控状态,避免放射性物质向环境的大量释放。T he station black-out （SBO ） is a typical initial incident w hich may lead to severe accident .In order to study the ability to deal with SBO accident in M 310 type nuclear power plant and consider the requirements of Fukushima improvement actions , MELCOR code was used to analysis mitigation ability to the SBO accident .To get the key point of the impact in SBO accident process ,the factors of main pump seal ,steam-driven auxiliary feed water ,and feed water into primary and secondary circuits were studied ,and the equipment availability and the revamping time were also taken into account .The results show that the improved M310 type nuclear power plants can mitigate the SBO accident effectively and the reactor can be cooled to controllable state to avoid the massive release of radioactive material to environment .

关 键 词：福岛核事故 全厂断电 福岛改进项 缓解措施 可控冷却状态 

分 类 号：TL333[核科学技术—核技术及应用]