动态可靠性评价方法在AP1000核电厂严重事故中的应用研究

动态可靠性评价方法能模拟系统状态发生连续或多重变化的情况，是核电厂概率安全研究的一个新发展点。本文利用动态可靠性评价方法，使用严重事故程序MAAP对AP1000核电厂全厂断电事故进行分析，并将动态可靠性评价结果应用于二级概率安全评价（PSA）分析，最终评价对放射性裂变产物的影响。研究结果表明，系统动态特性对核电厂PSA的分析结果有一定影响，且动态可靠性评价过程可挖掘更多信息，有利于更好地指导核电厂设计及提高核电厂的安全性。

Application of Dynamic Reliability Evaluation Method in AP1000 Severe Accident Analysis

The dynamic reliability evaluation method can simulate the continuous or multiple changes of the system state, and becomes a new development point for the probability safety research of nuclear power plants. Based on the dynamic reliability evaluation method, the state black out process of the AP1000 by MAAP severe accident program was analyzed, the results were applied to level 2 probabilistic safety assessment (PSA) analysis and finally the effect on radioactive fission products was evaluated. The research results show that the dynamic characteristics of the system have a certain impact on the analysis results of the PSA of nuclear power plant, and the dynamic reliability evaluation process can mine more information, and to better guide the design of nuclear power plants and improve the safety of nuclear power plants.