摘要
核电站反应堆保护系统实行数字化后,某些概率较低的软件共因故障可能会导致整个反应堆保护系统的功能丧失,这就需要采用基于不同软件平台的多样化保护系统。本文通过对方家山核电项目多样化保护系统的功能和设计特点的分析,结合事故后多样化保护系统的响应和动作序列,提出了核电站正常运行规程及事故规程的修改建议及事故后的处理策略。
After nuclear reactor protection systems are digitized, some low probability software common - cause failure could cause the entire loss of the functions of the reactor protection system. Therefore, different software platforms based on the diverse protection sys- tems are required. By analyzing the functions and design features of the diverse protection system in FANGJIASHAN nuclear plant, the paper combines the response and the action sequences of the post - accident diverse protection to propose the changes of nuclear power plant normal operating and emergency procedures and the post -accident treatment strategies.
关键词
纵深防御
反应堆保护系统
软件共因故障
多样化保护系统
运行分析
defense in depth
reactor protection system
software common - cause failure
diverse protection system
operation analysis
