核电站控制棒意外滑步原因分析

Cause analysis of accidental sliding of control rod in nuclear power plant

针对国内某核电站在进行控制棒驱动机构活动性试验过程中发生的控制棒意外滑步现象,进行了事件描述,并对控制棒驱动机构工作原理进行了研究,结合对滑步后反应堆堆芯物理参数和滑步特性的分析,从控制棒驱动机构的仪控、机械技术角度出发,找出了控制棒意外滑步的原因,保障了核电机组的安全稳定运行。

This thesis aimed at a domestic nuclear power plants in the control rod drive mechanism active test control accident that occurred in the process of the sliding phenomenon,has carried on the event description,and studied the working principle of the control rod drive mechanism,combining with the slide of the reactor core physical parameters and the paper analyses the characteristics of the slide,from the control rod drive mechanism in the instrument control,mechanical technology perspective,The cause of accidental sliding of control rod is found out and the safe and stable operation of nuclear power unit is guaranteed.