Nozzle dam having a unitary plug

Patent · Tue Dec 15 00:00:00 EST 1992

OSTI ID:7048503

Veronesi, L; Wepfer, R M

Apparatus for sealing the primary-side coolant flow nozzles of a nuclear steam generator is disclosed. 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. 16 figs.

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (United States)
• DOE Contract Number: AC03-86SF16038
• Assignee: Westinghouse Electric Corp., Pittsburgh, PA (United States)
• Patent Number(s): US 5171514; A
• Application Number: PPN: US 7-650135
• OSTI ID: 7048503
• Resource Relation: Patent File Date: 1 Feb 1991
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
NOZZLES
CLOSURES
NUCLEAR POWER PLANTS
STEAM GENERATORS
FASTENERS
PRIMARY COOLANT CIRCUITS
SEALS
BOILERS
COOLING SYSTEMS
ENERGY SYSTEMS
NUCLEAR FACILITIES
POWER PLANTS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
THERMAL POWER PLANTS
VAPOR GENERATORS
220200* - Nuclear Reactor Technology- Components & Accessories