| 摘要 |
PROBLEM TO BE SOLVED: To provide a boiling water reactor free from damaging a steam drier or the like in a reactor pressure vessel by suppressing effectively pressure vibration generated in a main steam system without reducing reactor heat output. SOLUTION: Pressure sensors 17, 18 always detect a fluctuating pressure following acoustic resonance generated inside a steam dome 7 and a steam pipe 8. A monitoring/control device 19 controls a bleeding amount supplied from a high-pressure turbine 9 to a feed water heater 13 by controlling opening of a bleeding valve 14, based on the level of the fluctuating pressure detected by the pressure sensors 17, 18, and controls fission energy from an uranium fuel in a core shroud 2 by controlling control rods 16 through a control rod driving device 15. Hereby, since the steam quantity generated in the reactor pressure vessel 1 is decreased, a steam flow passing the main steam system is reduced and the pressure vibration based on the acoustic resonance is suppressed. Since the enthalpy difference between feed water 3 and steam 4 in the input/output of the reactor pressure vessel 1 is increased, the reactor heat output is maintained constant. COPYRIGHT: (C)2007,JPO&INPIT |
