Grid for nuclear fuel assembly

Details Grid for nuclear fuel assembly Grid for nuclear fuel assembly

1990-11-30

1992-07-28

Hunt, Brooks H.

Induced nuclear reactions: processes, systems, and elements

Grids

376438, 376441, G21C 334

Patent

active

051339277

ABSTRACT:
There is disclosed a grid in a nuclear fuel assembly for supporting fuel rods and thimbles, which includes a plurality of elongated straps intersecting perpendicularly with each other to define a plurality of grid cells. A plurality of engaging units are provided on the grid cells for supporting thimbles, respectively. Each engaging unit includes at least one engaging member provided on at least one of the opposite ends of the straps of the grid cell and defining an engaging portion. A plurality of cylindrical sleeves are arranged in the grid cells for supporting thimbles, respectively. Each sleeve has at least one engaging projection associated with the engaging portion of the engaging member. The engaging projection of the sleeve and the engaging portion of the engaging member are formed such that when the sleeve is turned circumferentially, the engaging projection is held in engagement with the engaging portion.

REFERENCES:
patent: 3791466 (1974-02-01), Patterson et al.
patent: 3920516 (1975-11-01), Kmonk et al.
patent: 4692303 (1987-09-01), Osborne
patent: 4772447 (1988-09-01), Manson et al.
patent: 4800061 (1989-01-01), Shallenberger et al.
patent: 4873051 (1989-10-01), Duncan et al.
patent: 4888152 (1989-12-01), Razafindrazaka

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