Induced nuclear reactions: processes – systems – and elements – Handling of fission reactor component structure within... – Refueling machines
Patent
1988-08-19
1990-05-29
Wasil, Daniel
Induced nuclear reactions: processes, systems, and elements
Handling of fission reactor component structure within...
Refueling machines
376248, G21C 1910
Patent
active
049294130
ABSTRACT:
Refueling apparatus for a nuclear reactor including a bridge and a trolley. The bridge is moveable in tracks along the containment of the pit in which the reactor is immersed in water and the trolley moveable in tracks on the bridge at right angles to the tracks on the bridge. The trolley carries a mast assembly for engaging, raising, and lowering a nuclear-reactor component assembly involved in the refueling. The mast includes an elongated member for engaging control-rod and thimble plug assembly and a gripper for raising fuel assemblies. The elongated member is moveable upwardly or downwardly.
A TV camera and a light source and reflector are mounted on the gripper assembly at the lower end of the mast assembly. The source and reflector illuminate a selected part of the fuel assembly which is to be transferred and the camera is directed to this part so as to pick up an image of this part. The cooperative TV-receiver monitor on the console on the trolley is provided with cross hairs. The mast assembly is set by aligning the cross hairs with images of the heads of selected bolts on the image of the reactor component assembly.
REFERENCES:
patent: 3077361 (1963-02-01), Tait et al.
patent: 4374801 (1983-02-01), Albin
patent: 4482520 (1984-11-01), Randazza
Hornak Leonard P.
Kaufmann John W.
Swidwa Kenneth J.
Diamond H.
Wasil Daniel
Westinghouse Electric Corp.
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