skip to main content

Title: Improved nuclear fuel assembly grid spacer

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.
Authors:
 [1] ;  [2]
  1. (San Jose, CA)
  2. (Los Gatos, CA)
Publication Date:
OSTI Identifier:
862827
Report Number(s):
US 4021300
DOE Contract Number:
AT(04-3)-893
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
improved; nuclear; fuel; assembly; grid; spacer; improved; fuel; assembly; grid; spacer; method; retaining; basic; fuel; rod; support; elements; position; fuel; assembly; containment; channel; improvement; involves; attachment; grids; hexagonal; channel; forming; basic; fuel; rod; support; element; grid; structure; provides; design; insensitive; potential; channel; distortion; ballooning; fluence; levels; addition; improved; method; eliminates; associated; component; fabrication; assembly; rod support; rod support; improved method; nuclear fuel; fuel assembly; fuel assembly; fuel assembly; fuel rod; fuel rod; improved fuel; support elements; support element; support element; grid structure; improved nuclear; improvement involves; grid spacer; grid spacer; assembly grid; assembly grid /376/976/