Handle assembly and channel for a nuclear reactor fuel bundle as

Details Handle assembly and channel for a nuclear reactor fuel bundle as Handle assembly and channel for a nuclear reactor fuel bundle as

1996-05-29

1998-07-28

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Fission reactor material treatment

Impurity removal

376434, 376444, G21C 332

Patent

active

057871400

ABSTRACT:
A fuel bundle assembly for a nuclear reactor includes a modified channel that improves pressure drop performance and a handle assembly that includes structure for preventing a broken end plug from escaping the fuel bundle. In modifying the channel, one approach is to vary the outside dimension of the fuel channel along the length of the channel, but maintain a constant channel wall thickness. Another approach is to maintain the external dimensions of the fuel channel and vary the wall thickness along the length of the channel. The handle assembly replaces the conventional upper tie plate and is provided with structure for preventing debris such as a broken fuel rod end plug from escaping the fuel bundle. The structure preferably includes a plurality of gridwork cross members forming a substantially square grid including gridwork windows that are sized smaller than the fuel rod end plugs.

REFERENCES:
patent: 4749543 (1988-06-01), Crowther et al.

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