Induced nuclear reactions: processes – systems – and elements – Handling of fission reactor component structure within... – Refueling machines
Patent
1979-12-28
1982-11-09
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
Handling of fission reactor component structure within...
Refueling machines
376268, 294 86A, 414146, G21C 1900
Patent
active
043584217
ABSTRACT:
A typical embodiment of the invention provides a nuclear fuel assembly lock structure for control rod guide tubes. Illustratively, a sleeve telescopes over an end portion of a control rod guide tube which bears against an internal shoulder of the tube. The upper end of the sleeve protudes beyond the control rod guide tube spider and is locked in place by means of a resilient cellular lattice or lock that is seated in a mating groove in the outer surface of the sleeve. A special tool is provided for disengaging the entire lock structure, washer, spider, spring and grill from the end of the fuel assembly in order to enable these components to be removed in an assembled state and subsequently replaced on the fuel assembly after inspection and repair.
REFERENCES:
patent: 3310337 (1967-03-01), Riemenschneider
patent: 3856621 (1974-11-01), Suvanto
Edwards Robert J.
Gregory D. Anthony
The Babcock & Wilcox Company
Walsh Donald P.
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