介绍了发电机内部短路故障的主要分类及产生原因.利用经典PARK方程法,进行了实例仿真计算.研究并掌握超大容量核电站用发电机短路故障原因和仿真计算,对发电机运维与设备管理技术人员具有指导作用.

在国外维修模板数据库及其应用技术的基础上,结合国内核电厂的实际开发情况,建立国内核电厂设备维修策略模板.开展典型设备类型模板的开发与应用验证,给出了国内压水堆核电厂维修模板开发流程.结合案例阐述了维修模板在维修大纲编制和优化中的应用.

利用以可靠性为中心的维修(RCM)分析方法,优化大亚湾核电站循环水泵的维修策略,给出其全面解体检查周期.优化后的解体检查周期远远超过供货商建议的周期(8 a)和国内外同类设备的周期,可有效节约维修成本,并减少与维修活动相关的人因故障.

确定关键设备,优化其维修大纲和纠正性行动,保证机组安全可靠运行,已成为核电厂设备可靠性管理体系中重要一环.基于AP-913设备可靠性管理体系,对核电厂设备分级方法做了研究,阐述分级准则,给出分级的维度,结合应用AP913的目的给出分级流程.

Reliability-centered maintenance (RCM) is an important systematic approach applied to the development and optimization of maintenance strategies in many nuclear power plants (NPPs) which being in operation around the world. Its relevant technical concepts and methodologies also provide a good reference to the design, construction, and production preparation of new NPPs. Within a discussion on the introduction and application of RCM in NPPs under construction, this paper mainly expounded applications of RCM methodology in the design review, procurement requirement validation, disposal of left problems over by engineering, and other technical aspects to improve the reliability of systems and equipments in new NPPs. According to analysis and feedback of some typical actual cases, RCM technology was demonstrated to be feasible and valuable in reliability improvement in new NPPs.

This paper reveals the main factors of accelerated the aging of relay through statistical analysis of aging and failure data of intermediate relay and output relay for MV distribution board in Daya Bay nuclear power plant and Ling'ao nuclear power plant. The factors of accelerating relay aging are operation context including humidity, temperature, vibration impact, and etc., and aging mechanism including oxidation corrosion, mechanical wear, electrical wear, organic gas corrosion, insulation aging, electromagnetic interference, and etc. The suggested measures are the classified management, relay replacement, periodic check, and periodic replacement or maintenance.

Preventive maintenance program was one of the basic requirements to the nuclear power operation units set by national nuclear safety authorities. This paper describes the specific processes with respect to the compilation of preventive maintenance for equipment at nuclear power plants (NPPs), with a combination of domestic and foreign maintenance optimization methods, and RCM analysis results, AP913 method, experience feedback and other methods to optimize preventive maintenance program, which has created considerable economic benefits and achieved good results in operating and new NPPs. This paper presents the strategies and methods of compilation and optimization of preventive maintenance program, providing an important reference for compilation and optimization of maintenance program for NPPs at home and abroad.