Variable delay reactor protection system

Details Variable delay reactor protection system Variable delay reactor protection system

1987-11-25

1989-05-23

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

With control of reactor

By electronic signal processing circuitry

376211, 376402, G21C 736

Patent

active

048328987

ABSTRACT:
A system for variably delaying reactor trip and auxiliary feedwater system actuation resulting from a low water condition in a steam generator includes a plurality of sensors for determining both whether a low water condition exists in each steam generator and the power output level of the reactor. The length of the variable time delay is determined based upon the severity of the steam generator low water level condition and the reactor power output level. The reactor is then tripped and the auxiliary feedwater system actuated at the expiration of the time delay period if the steam generator water level is not restored.

REFERENCES:
patent: 4231328 (1980-11-01), Lang et al.
patent: 4290850 (1981-09-01), Omori
patent: 4424186 (1984-01-01), Cook
patent: 4478783 (1984-10-01), Broadwater
patent: 4738818 (1988-04-01), Cantineau

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