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Title: Nozzle dam having a unitary plug

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.

Inventors:
 [1];  [2]
  1. O'Hara Twp., Allegheny County, PA
  2. Export, PA
Issue Date:
Research Org.:
Westinghouse Electric Corp., Pittsburgh, PA (United States)
OSTI Identifier:
868589
Patent Number(s):
5171514
Assignee:
Westinghouse Electric Corp. (Pittsburgh, PA)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16L - PIPES
F - MECHANICAL ENGINEERING F22 - STEAM GENERATION F22B - METHODS OF STEAM GENERATION
DOE Contract Number:  
AC03-86SF16038
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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/

Citation Formats

Veronesi, Luciano, and Wepfer, Robert M. Nozzle dam having a unitary plug. United States: N. p., 1992. Web.
Veronesi, Luciano, & Wepfer, Robert M. Nozzle dam having a unitary plug. United States.
Veronesi, Luciano, and Wepfer, Robert M. Wed . "Nozzle dam having a unitary plug". United States. https://www.osti.gov/servlets/purl/868589.
@article{osti_868589,
title = {Nozzle dam having a unitary plug},
author = {Veronesi, Luciano and Wepfer, Robert M},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1992},
month = {Wed Jan 01 00:00:00 EST 1992}
}