Induced nuclear reactions: processes – systems – and elements – With control of reactor – By electronic signal processing circuitry
Patent
1982-06-03
1986-04-22
Jordan, Charles T.
Induced nuclear reactions: processes, systems, and elements
With control of reactor
By electronic signal processing circuitry
376247, 376283, G21C 736, G21C 1702, G21C 900
Patent
active
045841640
ABSTRACT:
A control system for overpressure protection of the reactor coolant boundary (14) in a nuclear power plant, comprising a pressure relief line (18a) having a power operated relief valve (24a) controlled by a circuit responsive to the condition of the reactor coolant and a control logic. The circuit includes a mode selector switch (80) having a NORMAL position (82) for establishing a full power overpressure relief valve setpoint (62) and a LTOP position (84) for establishing a low temperature overpressure relief setpoint (58). The control system logic opens the relief valve (24a) when (a) the mode switch is in the NORMAL position and the coolant pressure exceeds the full power setpoint (62), or (b) when the mode switch is in the LTOP position, the coolant temperature is less than a preselected value (52) and the coolant pressure exceeds the LTOP setpoint (58).
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patent: 4421716 (1983-12-01), Hench et al.
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McMullin Craig W.
Weismantel Steven E.
Combustion Engineering Inc.
Jordan Charles T.
Klein Richard
Ristas L. James
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