Fuel assembly with a removable end fitting

Details Fuel assembly with a removable end fitting Fuel assembly with a removable end fitting

1977-10-26

1980-06-17

Engle, Samuel W.

176 35, 176 36C, 176 76, G21C 330, G21C 708

Patent

active

042082480

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 protrudes 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: 3770583 (1973-11-01), Klumb
patent: 3862884 (1975-01-01), Jabsen
patent: 3953287 (1976-04-01), Long
patent: 4030975 (1977-06-01), Anthony
patent: 4045287 (1977-08-01), Santen

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