04900507 is referenced by 34 patents and cites 21 patents.

A debris filter bottom nozzle in a fuel assembly has support structure in the form of four legs adapted to rest on a lower core plate of the nuclear reactor and a nozzle plate fixed one side of the four legs facing toward a lowermost grid of the fuel assembly. The nozzle plate has defined therethrough only a plurality of flow holes individually smaller in size than the maximum dimension of unoccupied spaces through the lowermost grid which allow flow of liquid coolant through the nozzle plate. Therefore, any debris being carried by the liquid coolant flowing through the bottom nozzle from the lower core plate to the fuel assembly which is small enough in size to pass through the flow holes will also pass through the unoccupied grid spaces, whereas any debris which is large enough to not pass through the unoccupied grid spaces and collect in the grid will not pass through the aperture plate flow holes.

Title
Nuclear fuel assembly debris filter bottom nozzle
Application Number
46219
Publication Number
4900507
Application Date
June 22, 1988
Publication Date
February 13, 1990
Inventor
Stephen J Ferlan
Pittsburgh
PA, US
John M Shallenberger
Pittsburgh
PA, US
Assignee
Westinghouse Electric
PA, US
IPC
G21C 15/06
G21C 19/30
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