Nuclear fuel assembly coolant control
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United States of America Patent
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-
Nov 19, 1991
Grant Date -
N/A
app pub date -
Aug 3, 1989
filing date -
Aug 5, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for controlling the flow of coolant through a nuclear fuel assembly, in which a coolant flow restrictor 26 having longitudinal ducts 30 is provided with plug members 48, 49, 50 of different lengths. The plug members 48, 49, 50 are moved longitudinally by the effect of neutron induced growth on an actuating member 60. A connecting member 53 converts the growth of the actuating member 60 into a longitudinal movement of the plug members 48, 49, 50 so that they are progressively withdrawn from the flow restrictor 26 to increase the flow of coolant through the flow restrictor 26.
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