Nuclear fuel assembly lower end fitting

Details Nuclear fuel assembly lower end fitting Nuclear fuel assembly lower end fitting

1994-03-29

1994-11-01

Harvey, Behrend E.

Induced nuclear reactions: processes, systems, and elements

Reactor structures

Orifice or fluid control at inlet or outlet of coolant channels

376313, 376443, G21C 332, G21C 1506, G21C 1930

Patent

active

053612876

ABSTRACT:
A nuclear fuel assembly lower end fitting. Two plates each having a network of diagonal and lateral ribs in conjunction with hubs for the guide thimble hole pattern are provided. The pitch between ribs corresponds to one-half of the fuel rod pitch. This allows for the fuel rods to be supported by every other rib. One plate is rotated horizontally ninety degrees relative to the other plate so that the lateral ribs of the plates are at right angles. A screen formed from approximately 0.03 inch diameter wire with 0.100 inch pitch is provided with guide tube bosses. The plates and screen are rigidly attached to each other to form a debris filtering lower end fitting.

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