Pipe joints or couplings – Repair
Reexamination Certificate
2008-08-08
2011-10-18
Hewitt, James (Department: 3679)
Pipe joints or couplings
Repair
C285S367000, C285S419000, C138S097000
Reexamination Certificate
active
08038174
ABSTRACT:
A slip joint clamp is disclosed which structurally replaces cracked welded joints in the core spray downcomer slip joint coupling, which is part of the lower portion of internal core spray piping internal to a reactor vessel of a Boiling Water Reactor plant. The internal piping delivers core spray cooling water to the reactor core region. The clamp assembly consists of a primary clamp housing and a secondary clamp housing, which are rotationally joined together by a hinge assembly including a hinge pin. The clamp assembly is installed at a desired elevation relative to the downcomer slip joint, and then secured to the downcomer piping by installing coupling bolts and associated coupling bolt keeper nuts that hold the primary and secondary clamp housings in a facing relationship to one another around the downcomer slip joint.
REFERENCES:
patent: 1071424 (1913-08-01), Hughes
patent: 3003793 (1961-10-01), Pitt
patent: 4927181 (1990-05-01), Ciotola
patent: 5080400 (1992-01-01), Adamek et al.
patent: 5118139 (1992-06-01), Lott
patent: 5188397 (1993-02-01), Hynes
patent: RE35533 (1997-06-01), Adamek et al.
patent: 5839192 (1998-11-01), Weems
patent: 5853030 (1998-12-01), Walding
patent: 5899506 (1999-05-01), Tseeng
patent: 5947529 (1999-09-01), Jensen
patent: 6108391 (2000-08-01), Deaver et al.
patent: 6131962 (2000-10-01), Jensen
patent: 6421406 (2002-07-01), Jensen
patent: 7198465 (2007-04-01), Ichiryu
patent: 7617963 (2009-11-01), Jensen
patent: 7802825 (2010-09-01), Jensen
patent: 2004/0227347 (2004-11-01), Fundin et al.
patent: 2007/0189434 (2007-08-01), Jensen
patent: 2007/0296213 (2007-12-01), Jones et al.
patent: 2008/0144761 (2008-06-01), Jensen
patent: 2008/065364 (2008-06-01), None
Extended European Search Report for corresponding European Patent Application No. EP 09 16 7147 (Completion Date: Nov. 12, 2009).
GE-Hitachi Nuclear Energy Americas LLC
Hewitt James
Nixon & Vanderhye P.C
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