Spacer grid assembly and locking mechanism

Details Spacer grid assembly and locking mechanism Spacer grid assembly and locking mechanism

1980-03-17

1982-01-26

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376438, G21C 330

Patent

active

043127061

ABSTRACT:
A spacer grid assembly is disclosed for retaining a plurality of fuel rods in substantially parallel spaced relation, the spacer grids being formed with rhombic openings defining contact means for engaging from one to four fuel rods arranged in each opening, the spacer grids being of symmetric configuration with their rhombic openings being asymmetrically offset to permit inversion and relative rotation of the similar spacer grids for improved support of the fuel rods. An improved locking mechanism includes tie bars having chordal surfaces to facilitate their installation in slotted circular openings of the spacer grids, the tie rods being rotatable into locking engagement with the slotted openings.

REFERENCES:
patent: 3281327 (1966-10-01), Webb
patent: 3463703 (1969-08-01), Crandall
patent: 3607640 (1971-09-01), Krawiec
patent: 3764471 (1973-10-01), Ripley
patent: 4021300 (1977-05-01), Marshall
patent: 4081324 (1978-03-01), Flora
patent: 4152205 (1979-05-01), Kropfl
patent: 4175004 (1979-11-01), Jabsen

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