Bottom mounted fuel holddown mechanism

Details Bottom mounted fuel holddown mechanism Bottom mounted fuel holddown mechanism

1978-11-13

1981-11-03

Nelson, Peter A.

Induced nuclear reactions: processes, systems, and elements

Reactor structures

Circulating fluid within reactor

G21C 302

Patent

active

042984343

ABSTRACT:
A fuel assembly having a lower end fitting and actuating means interacting therewith for holding the assembly down on the core support stand against the upward flow of coolant. Locking means for interacting with projections on the support stand are carried by the lower end fitting and are actuated by the movement of an actuating rod operated from above the top of the assembly. In one embodiment of the invention the downward movement of the actuating rod forces a latched spring to move outward into locking engagement with a shoulder on the support stand projections. In another embodiment, the actuating rod is rotated to effect the locking between the end fitting and the projection.

REFERENCES:
patent: 3057793 (1962-10-01), Coates et al.
patent: 3389056 (1968-06-01), Frisch
patent: 3549491 (1970-12-01), Johnson
patent: 3853703 (1974-12-01), Anthony et al.
patent: 4038133 (1977-07-01), Bittermann et al.
patent: 4045287 (1977-08-01), van Santen
patent: 4053358 (1977-10-01), Pennell
patent: 4053359 (1977-10-01), Pennell et al.
patent: 4134790 (1979-01-01), Bevilacqua et al.

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