FMEA技术在CPR1000机组关键敏感设备维修优化中的应用

结合核电厂维修管理特点形成了简化的失效模式与影响分析即潜在失效模式及后果分析（FMEA）方法，对CPR1000多个机组的关键敏感设备管理（CCM）涉及的设备故障模式、故障影响和维修策略进行了分析，建立了关键敏感设备FMEA数据库。实践证明，该项工作的开展识别出了关键敏感设备未管理到的潜在停机停堆故障模式，发现了关键敏感设备技术文件存在的错误及不一致性，并复核了关键敏感设备清单的正确性和完整性，同时基于群厂运维大数据对众多关键敏感设备维修策略进行了系统性的优化，弥补了关键敏感设备的维修管理不足，减少了不必要的关键敏感设备维修资源投入，对关键敏感设备相关设备管理工作的互助开展，降低核电机组的非计划停机停堆风险有重要参考价值。 

Application of FMEA Technology in CCM Equipment Maintenance Optimization of CPR1000 Unit

In this paper, the failure mode and effect analysis (FMEA) method and process are introduced. Combined with the maintenance management characteristics of nuclear power plants, a simplified FMEA method is formed. The failure mode, fault impact and maintenance strategy of the critical component management (CCM) equipment in CPR1000 units are analyzed. The CCM equipment FMEA database is established. Practice has proved that the development of this work not only identifies the potential shutdown and shutdown failure modes that CCM equipment management has not covered, but also finds errors and inconsistencies in the CCM equipment technical documents, and also reviews the correctness and completeness of the CCM equipment list. At the same time, based on group operation and maintenance big data, the maintenance strategies of multiple CCM equipments are systematically optimized to make up for the lack of maintenance management of CCM equipment, reduce unnecessary investment in CCM equipment maintenance resources and manage equipment related to CCM equipment. It is of important reference value for the implementation of the management of CCM equipment and the mitigation of the risk of unplanned shutdown of nuclear power plants.