Method of repairing partly burnt-off fuel elements in the fuel-e

Details Method of repairing partly burnt-off fuel elements in the fuel-e Method of repairing partly burnt-off fuel elements in the fuel-e

1980-02-14

1982-06-22

Cangialosi, Sal

Induced nuclear reactions: processes, systems, and elements

Testing, sensing, measuring, or detecting a fission reactor...

376251, G21C 1700

Patent

active

043361030

ABSTRACT:
A method of repairing partly burnt-off fuel elements in a fuel-element pit of a pressurized-water reactor which includes placing a fuel element previously detected as being defective into a holding cage in substantially upright position with the aid of remotely controlled tools, and tipping it over through 180.degree.; removing the then upwardly disposed fuel-element foot from the fuel element so as to expose the ends of the fuel rods received in the fuel element; inspecting the fuel rods, the ends of which are then freely accessible for defects; removing with a fuel-rod exchanging tool those fuel rods at least which are determined to be defective and depositing them in a storage container; and raising replacement rods with the fuel-rod exchanging tool and inserting them into the fuel element without bending stress in exchange for the removed fuel rods.

REFERENCES:
patent: 3575802 (1971-04-01), Gelius
patent: 3990591 (1976-11-01), Street et al.
patent: 4034599 (1977-07-01), Osborne

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