Multiple fuel rod gripper

Details Multiple fuel rod gripper Multiple fuel rod gripper

1983-12-21

1987-03-24

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Disassembling

29723, 2941021, B23P 1900, B66C 100

Patent

active

046514007

ABSTRACT:
Both an apparatus and a process for removing fuel rods from spent fuel assemblies is disclosed herein. The apparatus of the invention includes a locking plate having a plurality of tapered holes registrable with the rods of a fuel rod assembly, a plurality of tapered collets, each of which includes a hollow portion for receiving the ends of the fuel rods, and a plurality of hydraulically operated plungers for withdrawing each of the tapered collets into its respective tapered hole in the locking plate, thereby contracting the hollow portion of the collet around its respective rod in gripping engagement. The use of hydraulic plungers causes each of the collets to apply substantially the same gripping force onto its respective fuel rod. Additionally, the apparatus includes a means for confirming whether each of the collets has grippingly engaged its respective rod.

REFERENCES:
patent: 2638373 (1953-05-01), Alford
patent: 3068035 (1963-12-01), Foglia
patent: 3278186 (1966-10-01), Torresen
patent: 3604746 (1971-09-01), Notari
patent: 3904048 (1975-09-01), Van Santen et al.
patent: 4192715 (1980-03-01), Koshkin et al.

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