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Title:
REACTOR RECIRCULATION INTERNAL PUMP FACILITY AND OPERATION METHOD ON ITS START OR STOP
Document Type and Number:
Japanese Patent JP3875372
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To reduce the load of an operator, for example, by facilitating monitoring, preventing tripping on activation, automating starting operation, preventing damage when a reactor recirculation internal pump stops, and at the same time securely detecting a low rotating speed when the reactor recirculation internal pump stops for positively stopping the pump.
SOLUTION: In a reactor recirculation internal pump facility with a reactor recirculation internal pump 2 being installed at the bottom of a reactor pressure vessel 1 of a boiling water reactor and a variable frequency/variable voltage power supply device 5 for driving the pump, a start monitoring device 13 that reads information regarding a current value, a voltage value, or a pump rotating speed when a pump is started from the variable frequency/variable voltage power supply device and displays the information, and an operation switch 9 for turning on or off current supply when the pump is started, are provided.


Inventors:
Seiji Goto
Application Number:
JP26721497A
Publication Date:
January 31, 2007
Filing Date:
September 30, 1997
Export Citation:
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Assignee:
Toshiba Corporation
International Classes:
G21C15/243; F04D15/00; G21C7/26; (IPC1-7): G21C15/243; F04D15/00
Domestic Patent References:
JP3282296A
JP9211175A
JP2161398A
JP6066979A
JP3090890A
JP61155770A
JP2051096A
JP9197091A
JP3100493A
Attorney, Agent or Firm:
Hisashi Hatano
Shunguchi Sekiguchi