Pipe joints or couplings – Repair
Patent
1996-08-22
1998-04-07
Arola, Dave W.
Pipe joints or couplings
Repair
285179, 285191, 285906, 29463, F16L 55178
Patent
active
057355517
ABSTRACT:
A pipe repair apparatus includes first and second housings that are bolted together to form a closed conduit extending between the ends of the housings. This conduit is shaped to received a pipe to be repaired. A first seal is mounted in the housing to seal against an outer circumferential surface of the pipe, and a second seal is mounted to extend around the conduit at an end of the housings to seal the housings against a wall extending outwardly from the pipe. A retainer is coupled to the housings to clamp the second seal against the wall. This retainer can include a threaded rod that passes through the housings or a spring that biases the housings toward the wall. The disclosed pipe repair is well suited for repairing a supply pipe in an internal core spray system of a nuclear reactor. This pipe repair forms a permanent repair that structurally replaces the pipe and welds being repaired. It is well suited for remote installation with minimal as-built information and in a minimal time. The repair provides an effective leakage barrier, and it allows inspection access to adjacent welds that are not covered by the repair.
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Behringer Thomas J.
Krouse Matthew D.
Sturtecky Kenneth R.
Whitman Gerald E.
Arola Dave W.
Commonwealth Edison Company
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