Controlling coolant flow to nuclear fuel assemblies
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United States of America Patent
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-
Feb 19, 1991
Grant Date -
N/A
app pub date -
Mar 22, 1989
filing date -
Mar 28, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a BWR- or PWR-type nuclear reactor, the fuel rods in the fuel assembly are cooled by a coolant flow which is pumped through the fuel core. Depending on the degree of burnup of the fuel rods, the coolant flow to the fuel assemblies may need to be changed for the cooling to be matched to local need. To control coolant flow on the basis of the degree of burnup of the fuel rods, the irradiation growth of elongated elements in the fuel assembly has been utilized.
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