该泵在主回路冷却水减少时，提供补充水以维持所需水量。同时该泵还向核主泵提供密封水。

 

Charging Pump (CHP)

      This pump supplies make-up water to maintain the volume when the primary reactor coolant has contracted due to decrease of load. Also it supplies sealing water to the sealed part of the primary reactor coolant pump.