以反应堆专设安全系统阀门为研究对象,通过阀门故障数据的搜集,依据阀门用途进行分类,研究了反应堆专设安全系统阀门的故障模式及故障原因,应用故障模式、影响及危害度分析研究了阀门不同故障模式的危害度,提出了反应堆专设安全系统阀门薄弱类型,为提高反应堆专设安全系统阀门可靠性提供研究依据。 Based on the collection of valve fault data and classification according to the valve usage, the failure mode and cause of failure of the reactor dedicated safety system valve are studied. The failure mode, influence and hazard degree analysis of the reactor are studied. Valve hazards of different failure modes, the proposed reactor-specific security system valve weak type, in order to improve the reliability of reactor-specific security system to provide the basis for the study of valve reliability.