在我国核电厂的安全审评过程中,主要采用确定论法,对设计基准事故(DBA)进行安全审评分析计算,以鉴定安全设施的功能和评价核电厂的安全裕度。目前已经对下列事故完成了审评计算。(1)由二次系统引起的排热增加。它包括给水温度降低,给水流量增加,蒸汽流 In the process of safety review of nuclear power plants in our country, the deterministic method is mainly used to conduct safety review and calculation of design basis accidents (DBAs) to identify the functions of safety facilities and evaluate the safety margins of nuclear power plants. At present, the following accidents have been evaluated and evaluated. (1) Increased heat release due to secondary system. It includes reduced feed water temperature, increased feed water flow, and steam flow