Reactor trip on turbine trip inhibit control system for nuclear

Registers – Transfer mechanism – Traveling pawl

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23515121, 2351513, 176 19EC, 176 20R, 176 22, 176 23, 176 24, G06G 754, G21C 736, G21D 310

Patent

active

039977676

ABSTRACT:
A reactor trip on turbine trip inhibit control system for a nuclear power generating system which utilizes steam bypass valves. The control system inhibits a normally automatic reactor trip on turbine trip when the bypass valves have the capability of bypassing enough steam to prevent reactor trip limits from being reached and/or to prevent opening of the secondary safety pressure valves. The control system generates a bypass valve capability signal which is continuously compared with the reactor power. If the capability is greater than the reactor power, then an inhibit signal is generated which prevents a turbine trip signal from tripping the nuclear reactor.

REFERENCES:
patent: 3437557 (1969-04-01), Kaipainen et al.
patent: 3565760 (1971-02-01), Parkos et al.
patent: 3752735 (1973-08-01), Musick et al.
patent: 3849637 (1974-11-01), Caruso et al.

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