Apparatus for holding grid springs

Induced nuclear reactions: processes – systems – and elements – Handling of fission reactor component structure within... – Fuel component

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G21C 3334

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active

052630650

ABSTRACT:
The purpose of the present invention is to provide an apparatus which can insert a plurality of hooks into slits of a strap constructing a grid and to hold springs so that the spaces of grid cells are enlarged simultaneously. The enlargement enables insertion of fuel rods into the cells. The apparatus comprises a frame member adapted to attach to the strap along the longitudinal direction thereof, a pair of clamping members engaged the frame member and extending in the longitudinal direction of the strap. Each clamping member can move along the longitudinal direction of the strap. The clamping member has a plurality of projecting hooks arranged in the longitudinal direction of the strap in a spaced relation to one another. The end of the hooks of one of the clamping means are bent toward a longitudinal direction of the strap, while the hooks of another clamping means are bent toward another longitudinal direction of the strap.

REFERENCES:
patent: 4175000 (1979-11-01), Jabsen
patent: 4427622 (1984-01-01), Knecht et al.
patent: 4651403 (1987-03-01), DeMario et al.
patent: 5061437 (1991-10-01), Whitt
patent: 5068081 (1991-11-01), Oyama et al.
Patent Abstracts of Japan vol. 014, No. 452 (P-112) Sep. 1990 and JP-A-02 181 699 (Mitsubishi Nuclear Fuel Co Ltd) 16 Jul. 1990.
Atomkernenergie/Kerntechnik vol. 47, No. 1, Jul. 1985, Munchen De p. 39; FIG. 4.

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