| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress resonance of a motor casing of a reactor internal pump (RIP) while properly maintaining reactor power. <P>SOLUTION: A rotational speed of some RIP2 is increased at high speed and is let pass through a resonance avoidance region RS, and at the same time the rotational speed of other RIP2 is decreased, so that reactor power PL by all RIP2 is controlled to have predetermined power. Then, the rotational speed of the other RIP2 is increased at high speed and is let pass through the resonance avoidance region RS, and at the same time the rotational speed of the remaining RIP2 is decreased in a state of being out of the resonance avoidance region RS, so that the reactor power PL by all RIP2 is controlled to have the predetermined power. <P>COPYRIGHT: (C)2013,JPO&INPIT |
