Method and apparatus for permissive control of a mast and...

Induced nuclear reactions: processes – systems – and elements – Handling of fission reactor component structure within... – Fuel component

Reexamination Certificate

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C376S264000, C376S267000, C376S268000

Reexamination Certificate

active

07986760

ABSTRACT:
A method and apparatus for the permissive control of a mast and fuel grapple to be used in the movement of reactor fuel components, including fuel assemblies, single blade and double blade guides, to be used in a Boiling Water Reactor (BWR) nuclear reactor. The Permissive Control System reduces the chance of human error associated with the movement of reactor components by assisting in controlling the location (plant coordinate) of the mast for picking-up and dropping-off reactor components, the sequence of reactor component movements, the orientation (angular rotation) of the mast and fuel grapple, the raising and lowering of the grapple, and the opening and closing of the fuel grapple.

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patent: 4666200 (1987-05-01), Walker et al.
patent: 4713212 (1987-12-01), Plumier
patent: 5113179 (1992-05-01), Scott-Jackson et al.
patent: 5369676 (1994-11-01), Ortega et al.
patent: 5644607 (1997-07-01), Iwama et al.
patent: 8-262182 (1996-10-01), None
European Search Report dated Apr. 18, 2011, issued in U.S. Appl. No. 08/168,545.

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