| 摘要 |
PROBLEM TO BE SOLVED: To integrate water injection lines for injecting water into a reactor pressure vessel under high pressures to one system, so as to enhance economy without impairing safety. SOLUTION: A nuclear reactor water injection pump 4 in the system for injecting water into the reactor pressure vessel 1 under high pressures after an accident is made drivable by two methods of a steam turbine 5 driven by steam taken out from the reactor pressure vessel 1, and an electric motor 6 driven by power supply from a diesel generator 35 capable of supplying electric power in emergency, the water injection pump 4 is driven by the turbine 5 within a range of driving the turbine 5 by pressure inside the reactor pressure vessel 1, and the pump 4 is driven switchedly by the electric motor 6 outside the range of driving the steam turbine 5, so as to be able to enhance the economy while including a function provided in conventional two high-pressure water injection lines. COPYRIGHT: (C)2004,JPO&NCIPI
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