Induced nuclear reactions: processes – systems – and elements – Handling of fission reactor component structure within... – Fuel component
Patent
1990-03-21
1991-11-12
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Handling of fission reactor component structure within...
Fuel component
376262, G21C 1900
Patent
active
050646060
ABSTRACT:
A channel box removing apparatus which permits a removal of the channel box from a nuclear fuel assembly while being placed on a fuel rack in a spent fuel storage pool without transferring to a preparation machine. The apparatus includes a pair of pivotally mounted, releasable hooks movable between a latched position where the hooks are in lifting engagement with the undersurfaces of clips provided on a pair of diagonally opposed top corners of the channel box and an unlatched position where the hooks are out of engagement with the associated clips. The apparatus also includes a bail cap mounted thereon for vertical movement and adapted to cooperate with a bail of the fuel assembly to guide the apparatus into an operative position with the fuel assembly during lowering of the apparatus. A locking mechanism is provided for preventing accidental disengagement of the hooks from the associated clips when the channel box is being lifted. A first indicator mechanism is also provided for providing a visual indication that the hooks are in the latched position. The apparatus also includes a second indicator mechanism for providing a visual indication that the hooks are in the latched position and also that the channel box alone can be lifted as it has been separated from the fuel assembly.
REFERENCES:
patent: 3856621 (1974-11-01), Suvanto et al.
patent: 4489037 (1984-12-01), Go
patent: 4540545 (1985-09-01), Kondo
patent: 4572817 (1986-02-01), Silverblatt
patent: 4690219 (1986-09-01), Go
Gotech, Limited
Wasil Daniel D.
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