Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1986-10-08
1988-02-16
Walsh, Donald P.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51241S, 376260, 29723, B24B 700, G21C 1900
Patent
active
047246367
ABSTRACT:
Both a grinding tool and a thimble screw alignment plate are disclosed herein that greatly facilitate the removal and reinstallation of the bottom nozzle of a fuel assembly. The grinding tool includes a base plate, a grinding motor, a grinding head, a housing for isolating the grinding motor from ambient water, and both a guide mechanism and linear drive for guiding and pushing the grinding head into abrasive contact with a screw-obstructing portion of a bottom nozzle. The screw alignment plate includes a plurality of bores registrable with the screw holes of a bottom nozzle, and a resilient sleeve mounted over each bore for receiving, retaining and aligning the threaded end of a screw with each such screw hole. Both the grinding tool and screw alignment plate are particularly adapted for use in an overall fuel assembly repair and reconstitution system, and greatly expedite the removal of bottom nozzles whose feet include flanges or gussets that obstruct access to one or more of the thimble screws that connect the bottom nozzle to the support skeleton of the fuel assembly.
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patent: 3894327 (1975-07-01), Jabsen
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Article entitled "KWU Offers a Mobile Reconstitution Unit for PWR Fuel", published in the Feb. 1986 issue of Nuclear Engineering International.
Walsh Donald P.
Wasil Daniel
Westinghouse Electric Corp.
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