OPERATION METHOD OF REACTOR, AND NUCLEAR POWER PLANT

摘要

PROBLEM TO BE SOLVED: To provide a nuclear power plant capable of improving the operation rate. SOLUTION: A nuclear power plant comprises a water supply temperature control device 27; a heat balance calculating device 28; and a core thermal device 35 for limiting and monitoring. The heat balance calculating device 28 calculates a water supply temperature T. Water supply temperature is used as a set value of water supply temperature when MCPR(T) corresponding to the water supply temperature T is higher than MCPR(0) obtained by the core thermal device 35 for limiting and monitoring. The water supply temperature control device 27 controls an opening of a steam flow rate adjusting valve 17 for a measured value of the water supply temperature to be the set value of water supply temperature T based on the water supply temperature T and a thermometer 25. A temperature of cooling water supplied to a core 11 is retained at a temperature close to an upper limit which does not generate cavitation throughout a reactor cycle by controlling the water supply temperature. COPYRIGHT: (C)2008,JPO&INPIT