Design of Core Cooling Monitoring System Based on SOP

Ling’ao phase II nuclear power project is the first SOP adopted plant in China.According to the requirement of this procedure,Core Cooling Monitoring System（CCMS） shall perform two of six status function monitoring tasks of SOP,including primary loop coolant inventory,pressure and temperature.Inventory is monitored by reactor vessel level and the rest are monitored by saturation margin.To fulfill these tasks,the system design,including sensors,data processing and information display,is significantly different from EOP design.This paper gives a generally description from the system design aspect.