CPR1000核电机组主泵电机轴绝缘低问题处理和预防研究

Management and Prevention of Low Bearing Insulation for Reactor Coolant Pump Motors of CPR1000 Nuclear Power Plant

结合中国改进型三环路压水堆(CPR1000)宁德核电厂3号机组反应堆冷却剂泵电机(简称主泵电机)轴绝缘丢失事件,对造成主泵电机轴绝缘低的3个主要原因进行分析和研究,形成14步标准化排查步骤,解决了主泵电机轴绝缘低问题,并提出核电现场防止轴绝缘低的5点措施。

Considering the incident of bearing insulation lost for reactor coolant pump motor in Unit 3 of CPR1000 Ningde Nuclear Power Plant, three main reasons for low bearing insulation of the reactor coolant pump motors are analyzed and studied. 14 standard check-up steps are formed to solve the low bearing insulation for reactor coolant pump motors successfully. Five measures to prevent the motor from low bearing insulation on site are proposed.