Nozzle dam having a unitary plug

Patent · Wed Jan 01 00:00:00 EST 1992

OSTI ID:868589

Veronesi, Luciano ^[1]; Wepfer, Robert M ^[2]

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1. O'Hara Twp., Allegheny County, PA
2. Export, PA

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.

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (United States)
• DOE Contract Number: AC03-86SF16038
• Assignee: Westinghouse Electric Corp. (Pittsburgh, PA)
• Patent Number(s): US 5171514
• OSTI ID: 868589
• Country of Publication: United States
• Language: English

Related Subjects

nozzle
dam
unitary
plug
apparatus
sealing
primary-side
coolant
flow
nozzles
nuclear
steam
generator
relatively
diameter
manway
openings
providing
access
interior
including
inside
surface
substantially
bracket
outside
matingly
sealingly
engaging
plurality
longitudinally
therethrough
slots
transversely
therein
communication
plugs
sized
pass
disposed
plugging
arms
operable
engage
connecting
sealed
seal
connected
outside surface
inside surface
steam generator
coolant flow
inside diameter
sealingly disposed
providing access
nuclear steam
generator including
flow nozzles
/376/138/