| 摘要 |
<P>PROBLEM TO BE SOLVED: To maintain nuclear reactor cooling material inventory to the utmost during a generator load shutoff phenomenon of a nuclear power plant to reduce the maximum pressure in a nuclear reactor pressure vessel. <P>SOLUTION: In an operation controller of a boiling water type light water reactor which includes: a main steam pipe 4; a safety relief valve 10; a turbine bypass valve 16 provided in a bypass pipe 22 which connects the main steam pipe 4 to a steam condenser 7; and a device which generates a signal for closing a steam regulator valve 15 and opening the turbine bypass valve 16 based on detection results by first detection means for detecting a non-load state of a turbine 5, closes the steam regulator valve 15 and opens the turbine bypass valve 16 at the non-load state, the operation controller of the nuclear power plant is provided with: second detection means for detecting an opening degree of the turbine bypass valve 16; third detection means for detecting pressure in a nuclear reactor pressure vessel 2; and a controller which manages opening/closing control of the safety relief valve 10 by using detection results of each of the first, second, third detection means as a determination element. <P>COPYRIGHT: (C)2012,JPO&INPIT |
