基于FDS的核电厂主控室火灾PSA研究  

Study on the Fire PSA for the Main Control Room of Nuclear Power Plant Based on the FDS

作　　者：史强[1] 罗志飞[1] 吴晓燕[1] 李晓洋[1] 石兴伟[1] SHI Qiang;LUO Zhi-fei;WU Xiao-yan;LI Xiao-yang;SHI Xing-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4期613-617,共5页Nuclear Science and Engineering

摘　　要：主控室火灾是核安全领域的重要课题,一旦发生事故,会危及操纵员和设备安全,进而影响到核电厂运行和安全停堆的控制,导致堆芯损坏。本文在介绍主控室火灾特点的基础上,在国内率先将火灾动力学模型FDS(Fire Dynamics Simulator)应用到主控室火灾概率安全评价(PSA)中,通过实例分析主控室火灾情境中关键参数的变化规律,讨论主控室火源的热释放速率及操纵员撤离要求,得到主控室主专用安全盘和次专用安全盘火灾导致的堆芯损坏频率分别为1.0×10-7/(堆·年)和2.5×10-8/(堆·年),体现FDS在核电厂火灾应用领域的优势。The fire in the main control room is an important issue in the field of safety and fire protection.Once an accident occurs,it will endanger the safety of operators and equipment,thus affecting the control of nuclear power plant operation and safety shutdown,and resulting in core damage.Based on the introduction of fire characteristics of the main control room,this paper takes the lead in applying the fire dynamics model of FDS(fire dynamics simulator)to the probability and safety evaluation of the main control room,and analyzes the variation rules of key parameters in the fire situation,discussed the heat release rate of the fire source and the operator evacuation requirements.The core damage frequency caused by the fire in the main special safety disk and the secondary special safety disk was 1.0E-07/(reactor?year)and 2.5 E-08/(reactor·year),reflecting the advantages of FDS in nuclear power plant fire applications.

关 键 词：核电厂主控室 火灾PSA FDS 堆芯损坏频率 

分 类 号：TL48[核科学技术—核技术及应用]