Improved nuclear fuel assembly grid spacer

Details Improved nuclear fuel assembly grid spacer Improved nuclear fuel assembly grid spacer

1975-05-23

1977-05-03

Pendegrass, Verlin R.

176 76, G21C 330

Patent

active

040213005

ABSTRACT:
An improved fuel assembly grid spacer and method of retaining the basic fuel rod support elements in position within the fuel assembly containment channel. The improvement involves attachment of the grids to the hexagonal channel and of forming the basic fuel rod support element into a grid structure, which provides a design which is insensitive to potential channel distortion (ballooning) at high fluence levels. In addition the improved method eliminates problems associated with component fabrication and assembly.

REFERENCES:
patent: 3679547 (1972-07-01), Warberg
patent: 3746617 (1973-07-01), Iwao
patent: 3751335 (1973-08-01), Keith
patent: 3764471 (1973-10-01), Ripley

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