Reactor core shroud repair using thermally tensioned links to ap

Details Reactor core shroud repair using thermally tensioned links to ap Reactor core shroud repair using thermally tensioned links to ap

1997-02-21

2000-05-23

Jordan, Charles T.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Core restraint means

376260, 376287, 2940215, G21C 1900

Patent

active

060673389

ABSTRACT:
An apparatus for repairing the core shroud of a nuclear reactor having one or more cracked vertical seam welds. The repair involves machining two holes in the shroud on opposing sides of the cracked vertical seam weld and then attaching two flexible links on the inside and outside of the shroud wall by means of two shear bolts inserted in the machined holes. The flexible links bridge the cracked vertical weld seam. Multiple link assemblies can be placed along the length of a crack. The links are made of an alloy having a coefficient of thermal expansion less than the coefficient of thermal expansion of the shroud material. The links are installed while the reactor is shutdown. When the reactor returns to operation, the consequent temperature rise causes the shroud section being bridged by the links to expand more than the links expand. As a result the links exert a circumferential compressive load across the crack in the vertical seam weld.

REFERENCES:
patent: 3469865 (1969-09-01), Ellenburg
patent: 4115203 (1978-09-01), Naevestad
patent: 4574971 (1986-03-01), Leonard
patent: 5102612 (1992-04-01), McDonald et al.
patent: 5392322 (1995-02-01), Whitling et al.
patent: 5521951 (1996-05-01), Charnley et al.
patent: 5530219 (1996-06-01), Offer et al.
patent: 5675619 (1997-10-01), Erbes et al.
patent: 5729581 (1998-03-01), Loock et al.
patent: 5737379 (1998-04-01), Erbes
patent: 5742653 (1998-04-01), Erbes et al.
patent: 5803686 (1998-09-01), Erbes et al.
patent: 5905771 (1999-05-01), Erbes et al.

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