Induced nuclear reactions: processes – systems – and elements – With control of reactor – By electronic signal processing circuitry
Patent
1991-06-24
1995-01-31
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
With control of reactor
By electronic signal processing circuitry
376215, G21C 736
Patent
active
053864417
ABSTRACT:
In a nuclear reactor the feedwater control system receives steam generator water level signals, including information to determine signal quality. The signal quality and additional signal validation determine how the water level signals are to be used by the feed-water control system. In the preferred embodiment, each water level signal is compared with a possible range and the difference or differential between all possible pairs of the signals is calculated and compared with an acceptable differential range. While alarms are sounded if any of these checks on the water level signals indicate an invalid signal, the water level signals are used to calculate a median level signal until there is less than two water level signals with good quality within the possible range or all differentials are outside the acceptable differential range. Thus, a single bad signal does not affect median signal selection, but the feedwater control system automatically switches to manual when a second invalid signal is detected, thereby preventing an inappropriate control action.
REFERENCES:
patent: 3518974 (1970-07-01), Bradley
patent: 4105496 (1978-08-01), Therond
patent: 4105900 (1978-08-01), Martin et al.
patent: 4427620 (1984-01-01), Cook
patent: 4621368 (1986-11-01), Once et al.
patent: 4738818 (1988-04-01), Cantineau
patent: 4777009 (1988-10-01), Singh et al.
patent: 4797670 (1989-01-01), Joyner
European Search Report, The Hague, Nov. 9, 1990.
Catullo, Jr. William J.
Erin Lawrence E.
Gallagher John M.
Paris Richard E.
Chellliah Meena
Walsh Donald P.
Watkins P. C.
Westinghouse Electric Corporation
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