Fluid level control system

Details Fluid level control system Fluid level control system

1978-10-23

1981-11-24

Cangialosi, S. A.

Induced nuclear reactions: processes, systems, and elements

With control of reactor

By coolant flow

376258, G21C 700

Patent

active

043022880

ABSTRACT:
In a system, such as a water-cooled nuclear reactor, water level sensors provide signals to a control channel for control of feedwater flow and hence the water level in the pressure vessel. Rapid and fine level control is provided by comparing fluid outflow and inflow. Means are provided to block automatically the flow comparison signal from the control circuit in response to a signal characteristic of a faulted flow comparison signal. At least one redundant control channel is provided and level control is transferred thereto automatically upon excusion of the water level beyond predetermined normal upper and lower limits or in response to a rapid change in the water level control signal to avoid unnecessary shutdown in the event of a faulted channel.

REFERENCES:
patent: 3689802 (1972-09-01), Waldman
patent: 3895223 (1975-07-01), Neuner et al.
patent: 3979255 (1976-09-01), Bulgier et al.
patent: 4061533 (1977-12-01), Durrant
patent: 4104117 (1978-08-01), Parziale et al.

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