Spacer for retaining fuel rods in a nuclear reactor fuel assembl

Details Spacer for retaining fuel rods in a nuclear reactor fuel assembl Spacer for retaining fuel rods in a nuclear reactor fuel assembl

1992-10-06

1994-02-08

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376439, 376462, 376448, G21C 334

Patent

active

052854876

ABSTRACT:
A spacer for a nuclear reactor fuel assembly includes a cell-formed lattice-work for retaining parallel, elongated elements such as fuel rods (4) into a bundle of substantially square cross section. The cells are formed from tubular, preferably round sleeves (1). Each one of these offers a passage for one of the elements for mutually fixing these elements. Each spacer is formed from two sub-spacers (5) somewhat spaced-apart from each other in the longitudinal direction of the bundle. A first sub-spacer in a pair fixes elements lying substantially on one side of a diagonal through the bundle, and a second sub-spacer fixes the other elements such that elements passing through the sleeves (1) of the first sub-spacer pass, possibly with some exception, at the side of the sleeves in the second sub-spacer and vice versa.

REFERENCES:
patent: 3176762 (1965-04-01), Greenwood et al.
patent: 3369973 (1968-02-01), Voigt et al.
patent: 3567582 (1971-03-01), Jean-Paul L. Van Dievoet et al.
patent: 3746617 (1973-07-01), Iwao et al.
patent: 4297170 (1981-10-01), Leclercq
patent: 4416852 (1983-11-01), Nylund
patent: 4885127 (1989-12-01), Yokoyama
patent: 5096660 (1992-03-01), Hembjer et al.

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