Induced nuclear reactions: processes – systems – and elements – Seal arrangements – For nozzle
Patent
1991-02-01
1992-12-15
Bryant, III, James E.
Induced nuclear reactions: processes, systems, and elements
Seal arrangements
For nozzle
138 89, G21C 1306
Patent
active
051715147
ABSTRACT:
Apparatus for sealing the primary-side coolant flow nozzles of a nuclear steam generator. The steam generator has relatively small diameter manway openings for providing access to the interior of the steam generator including the inside surface of each nozzle, the manway openings having a diameter substantially less than the inside diameter of each nozzle. The apparatus includes a bracket having an outside surface for matingly sealingly engaging the inside surface of the nozzle. The bracket also has a plurality of openings longitudinally therethrough and a plurality of slots transversely therein in communication with each opening. A plurality of unitary plugs sized to pass through the manway opening are matingly sealingly disposed in each opening of the bracket for sealingly plugging each opening. Each plug includes a plurality of arms operable to engage the slots of the bracket for connecting each plug to the bracket, so that the nozzle is sealed as the plugs seal the openings and are connected to the bracket.
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Veronesi Luciano
Wepfer Robert M.
Bryant III James E.
Stevens Walter S.
Westinghouse Electric Corp.
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