Method of manufacturing a grid having calibrated cells for a nuc

Details Method of manufacturing a grid having calibrated cells for a nuc Method of manufacturing a grid having calibrated cells for a nuc

1991-07-24

1993-05-18

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376438, 376462, 376439, G21C 334

Patent

active

052119084

ABSTRACT:
There is provided a method of manufacturing a grid for a nuclear fuel assembly, the grid having at least two crossed sets of mutually parallel plates which define cells, some of which receive guide tubes and others receive fuel rods, the plates being provided with boss means for limiting the amount of movement available to the rods relative to the nodes of a regular array. The plates are formed with bosses projecting radially inwardly into each cell for receiving a fuel rod by such an amount that they define a passage having a size at least equal to a minimum diameter of the fuel rods. Then the bosses are deformed radially outwardly for imparting to each passage a predetermined radial size, slightly higher than that of one fuel rod and determined by a gauge.

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patent: 4427622 (1984-01-01), Knecht et al.
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patent: 4663119 (1987-05-01), Kerry
patent: 4924586 (1990-05-01), King, Jr. et al.
patent: 4933138 (1990-06-01), Mouesca et al.
patent: 4946587 (1990-08-01), Reeves et al.

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