Title:
WATER SUPPLY CONTROL METHOD AND DEVICE FOR STEAM GENERATION PLANT
Document Type and Number:
Japanese Patent JP3427733
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent the water level in a nuclear reactor from reaching high set value in a water-level restoring process after generation of a nuclear reactor scram.
SOLUTION: Since the second time-monitor means outputs a zero reset signal S13 by the time of Δt2 when a nuclear reactor water level determining part 19 outputs trip signals S5, S6 at the time of a nuclear reactor scram and outputs a switch signal S12 to a three/single phase selector, a TD-RFP is tripped by the outputs of the trip signals S5, S6, via a controller, and a main water-level controller outputs zero to a controller for an MD-RFP during the time. Therefore, when the main water-level controller conducts zero-output during the Δt2 of time by the second time monitoring means, control start of the controller for the MD-RFP during the time is brought into a stop condition.
Inventors:
Aritoshi Mizude
Fumio Mizuki
Fumio Mizuki
Application Number:
JP17010698A
Publication Date:
July 22, 2003
Filing Date:
June 17, 1998
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G21D3/04; G21D3/08; (IPC1-7): G21D3/08; G21D3/04
Domestic Patent References:
| JP5343104A | ||||
| JP2290597A | ||||
| JP3295500A |
Attorney, Agent or Firm:
Yasuo Sakuta
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