Method for steam generator water level measurement

Details Method for steam generator water level measurement Method for steam generator water level measurement

1990-10-22

1991-06-18

Hunt, Brooks H.

Induced nuclear reactions: processes, systems, and elements

Testing, sensing, measuring, or detecting a fission reactor...

Position detection

376246, 376247, G21C 1700

Patent

active

050248022

ABSTRACT:
A method is provided for determining and controlling steam water level in a steam generator of a nuclear plant, comprising calibrating the water level sensor in terms of velocity head and also adjusting the high level setpoint in terms of a velocity head bias. The water level differential pressure sensor is calibrated so that maximum water level is indicated as that level corresponding to the upper tap level less velocity head at maximum power plant power. The high level setpoint is calculated as corresponding to the riser level less a velocity head bias, the bias being calculated as maximum velocity head at maximum velocity minus riser head percentage of span times velocity head at maximum power.

REFERENCES:
patent: 4275447 (1981-06-01), Ruiz
patent: 4302288 (1981-11-01), Youngborg
patent: 4765945 (1988-08-01), Walleser

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