Method and structure for repairing an elongated metal hollow mem

Details Method and structure for repairing an elongated metal hollow mem Method and structure for repairing an elongated metal hollow mem

1991-01-09

1993-11-30

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

138 97, G21C 1900

Patent

active

052672794

ABSTRACT:
A part of an ICM housing including a portion to be repaired, welded to a wall of a reactor pressure vessel in operation, is cut and removed and a new ICM housing half is welded to the remaining part of the ICM housing to form a new ICM housing. The new ICM housing is provided at the welding portion thereof with a molten metal layer containing 4 wt % or more .delta. ferrite. A sleeve made of stainless steel is located at the welding portion of an inner peripheral surface of the new ICM housing made so as to be molten by a TIG welding machine to form the molten metal layer, with the molten metal layer preventing stress corrosion cracking of the new ICM housing.

REFERENCES:
patent: 4847967 (1989-07-01), Gaudin
patent: 5103173 (1992-04-01), Honkura et al.

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