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在核电站安全研究中,概率安全评价方法已经得到了广泛的应用.但是对于采用非能动设计的核电站系统,其可靠性分析的研究还处于初级阶段.非能动系统的失效不但要考虑常规可靠性分析中考虑的设备失效,还要考虑物理过程的失效.物理过程失效概率的计算方法和能动系统可靠性分析方法完全不同.本文给出物理过程失效的数学描述,介绍了一次二阶矩法、响应面方法,并且应用响应面方法计算了清华大学核能技术设计研究院10MW高温气冷实验堆(HTR-10)余热排出系统失效概率的近似值.
In nuclear power plant safety research, the probabilistic safety assessment method has been widely used, but the research on the reliability analysis of nuclear power plant with passive design is still in its infancy.Non-active system failure not only needs to consider the conventional reliability analysis In the consideration of the failure of equipment, but also to consider the failure of the physical process.Physical process failure probability calculation method and active system reliability analysis method is completely different.This paper gives a mathematical description of the physical process failure, introduced a second moment method, response Surface method and the response surface methodology is used to calculate the approximate failure probability of the residual heat removal system of HTR-10 in Tsinghua University Institute of Nuclear Energy Technology Design and Research.