JPS5496694A - Nuclear reactor coolant purifier - Google Patents

Abstract

PURPOSE:To improve the reliability of piping machinery by bypass-piping a regenerated heat exchanger on the recycling cycling pump intake section and setting up a valves in its branch pipe, then slowly make the temperature of a coolant purifier rise at start from its low temperature status. CONSTITUTION:The bypass piping 15 is set up on the intake section of the cycling pump 11 and the outlet section of the regenerated heat exchanger and the valves 17 and 18 are set up in this branch pipe 20 in parallel. The downward stream side of the valves is made to flow together and connected to a power reactor water supply system. When the pump 11 stops during the running of the nuclear reactor and a coolant purifier in low temperature status starts, the valves 17 and 18 close and the valve 16 of the piping 15 opens. When the pump 11 starts, a closed loop functions in the cycling pump 11 regenerated heat exchanger 12 non-regenerated heat exchanger 13 filtering desalination equipment 14 regenerated heat exchanger 12 and cycling pump 11. The temperature of the closed loop is slowly raised by making the cycling water of the closed loop bit by bit from the valve 18 to the nuclear reactor under the supervision of the thermometer 21 and the high temperature water of nuclear reactor into the closed loop bit by bit.