Nuclear reactor power control method and device

Details Nuclear reactor power control method and device Nuclear reactor power control method and device

1992-08-26

1994-03-08

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

With control of reactor

By coolant flow

376216, 376217, G21C 732

Patent

active

052934110

ABSTRACT:
Decreasing the speed of a pump supplying cooling water to the core in the boiling water type nuclear reactor based on a trip signal that is generated when a pump supplying feed water is tripped. This performs a first operation to decrease the nuclear reactor power to a first fixed value. A second operation lowers the nuclear reactor power to a second fixed value that is lower than the first fixed value and that prevents run-out of other first pumps in operation. The first fixed value is lower than the reactor power at the moment when the first pump is tripped. The steam flow is decreased substantially simultaneously with the decrease of the feed water flow. Thereby, the decrease of the steam flow is carried out in an early stage when the feed water pump is tripped and the possibility of nuclear reactor scram is reduced.

REFERENCES:
patent: 4129475 (1978-01-01), Spurgin et al.
patent: 4440715 (1984-04-01), Sato et al.
patent: 4486381 (1984-12-01), Hirukawa et al.
patent: 4605530 (1986-08-01), Tatemichi
Kenneth C. Lish, Nuclear Power Plant Systems And Equipment, 1972 by Industrial Press, pp. 39-40, Section 3.7.

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