Induced nuclear reactions: processes – systems – and elements – Handling of fission reactor component structure within...
Patent
1990-08-03
1991-08-06
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Handling of fission reactor component structure within...
29723, 294 97, G21C 1910
Patent
active
050376039
ABSTRACT:
A hand held tool for removing a hollow locking tube from a locking position in the upper end portion of a guide thimble includes an elongated hollow tubular assembly having a lower end portion insertable in the locking tube and an actuator assembly mounted through the tubular assembly for axial movement therealong and having a lower end portion for actuating a set of lifting members of the lower end portion of the tubular assembly to extend and retract their catch elements through and from apertures in the tubular assembly for engaging with and disengaging from a lower edge of the locking tube. The lower end portion of the tubular assembly includes a guide member composed of a hollow tubular element and a guide element interfitted with an open end of the tubular element and having a body portion projecting therefrom. The tubular element has the apertures through which the catch elements on the lifting members can be extended to engage the lower edge of the locking tube. The end of the tubular element and the body portion of the guide element have substantially the same outside diameter so as to provide a continuous smooth transition from the tubular element end to the guide element body portion for facilitating insertion of the guide and tubular elements of the guide member into the hollow locking tube without catching on an upper edge thereof at the transition of the guide member.
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Fernandez Juan J.
Wood John D.
Voss Frederick H.
Wasil Daniel D.
Westinghouse Electric Corp.
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