Static fuel holddown system

Details Static fuel holddown system Static fuel holddown system

1977-01-21

1978-08-01

Behrend, Harvey E.

176 78, 176 87, G21C 330

Patent

active

041041208

ABSTRACT:
A holddown column for preventing upstream motion of nuclear-reactor fuel assemblies during operation of the reactor is disclosed. The holddown column is a composite of three concentric individual columns. Lips on the intermediate column engage the other two columns so that the intermediate column expands under load as the other two columns contract. This results in a greater deflection of the column under load than would result if the column were only a single column, but the thermal expansion experienced by the composite column is not different from the thermal expansion experienced by a simple column of the same material and length.

REFERENCES:
patent: 3121666 (1964-02-01), Wheelock
patent: 3389054 (1968-06-01), Kovacic
patent: 3527669 (1970-09-01), Bettis

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