核电站重要敏感性设备分析

Analysis on Critical Components of Nuclear Power Plant (NPP)

核电站重要敏感性设备管理是国内首次采用归纳法和演绎法对核电站重要敏感系统和设备进行识别和设备分级的一种新方法。目标是为了找到导致反应堆紧急停堆、强迫停机和非计划跳机跳堆风险的主要部件 ,并采用 80 - 2 0的原理进行有效的管理 ,建立有效的风险管理 (预防、探测、改正行动 PDC ,Prevention/Detec tion/Correction)大纲和PDC管理数据库 ,并对大部分的重要敏感设备的子部件进行的FMEA(FailureModeandEffectAnalysis)分析 ,识别其失效机理 ,从而确定重要敏感设备清单和预防跳机跳堆的改正行动 ,减少未来由于设备失效导致的跳堆次数 ,达到提高核电站的设备可靠性、安全性和经济性的目的。

Critical Component Management (CCM) of nuclear power plant is a new method for identifying and classifying the critical systems and components by the deductive and induction method, it is an effective method for risk management. Main objective of the project is to identifying NPP scram and tubing trips critical components. The strategy of the analysis is by using 80/20 principle to enhance effective component management. By way of preventing the failure of the list of critical components,process PDC (Prevention /detection/correction) and PDC database are established. Using Failure Mode and Effect Analysis (FMEA) method,the list of components, whose failure would cause unplanned loss of capacity factor from reactor and plant trips, could be identified. Therefore the plant equipment reliability will be strengthened and resulted in reduction of plant trip in the future to improve plant safety and economy.