| 摘要 |
PROBLEM TO BE SOLVED: To provide a nuclear reactor start-up monitoring system capable of keeping a coolant temperature changing rate within a limit value by providing proper information to an operator when the moderator temperature reactivity of a reactor water is positive. SOLUTION: A nuclear reactor start-up monitoring system 22 includes: a computing processing device 33; a moderator temperature reactivity coefficient determining device 23; and an output information presenting device 32. The moderator temperature reactivity coefficient determining device 23 determines whether the moderator temperature reactivity coefficient is positive or negative by inputting the inverse number of the reactor period and the reactor water temperature changing rate which are calculated by the computing processing device 33, and using the lapse time information after termination of the control rod operation, present inverse number of the reactor period, the inverse number of the nuclear reactor period at the time after elapsing p second from the termination time of the control rod operation, and the reactor water temperature changing rate at the time ahead of q seconds from the termination time of the control rod operation. The display information of positive (or negative) obtained by the determination is generated by the output information processing device 32 and is outputted to a display device 42. A necessary guidance is voiced out. COPYRIGHT: (C)2008,JPO&INPIT
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