湿法贮存乏燃料核电厂的应急分级

Emergency Classification of Nuclear Power Plants with Wet Storage Spent Fuel

根据乏燃料重返临界、屏蔽丧失、排热丧失和包容丧失对核电厂造成的实质性安全威胁,分析湿法贮存乏燃料核电厂的应急分级。应急分级使用的参数不仅应可实现监测,还应能表征乏燃料安全状态的等级。以方家山核电厂为例,给出了指示乏燃料安全状态的水位、温度、剂量率等参数的典型值及方家山核电厂乏燃料相关的应急分级。

The emergency classification of the nuclear power plants with wet storage spent fuel is analyzed, based on the threats of the criticality return of spent fuels and the losing of shield, heat removal and containment. The parameters for classification can not only be monitored, but also can be used to character the safety level of the spent fuels. The representative values of water level, temperature and dose rate and the emergency classification of the spent fuel for Fangjiashan Nuclear Power Plant are provided.