Process for repairing a cryogenic heat exchanger

Details Process for repairing a cryogenic heat exchanger Process for repairing a cryogenic heat exchanger

1987-10-13

1989-08-22

Childs, Sadie

Coating processes

Restoring or repairing

156 94, 156 98, 427142, 4273855, 4273881, 427421, 427429, B32B 3500

Patent

active

048594911

ABSTRACT:
A low temperature process for repairing leakage-causing defects such as cracks, fissures, etc., in a cryogenic heat exchanger used in the liquefaction of a gas such as natural gas, especially one constructed from aluminum, involves the use of a low temperature, quick-curing filler composition to at least temporarily fill the defects and prevent further leakage. Thereafter, a sealant and, optionally, a metal patch is applied to and held in place against the sealant-treated damaged site employing a relatively slow-curing adhesive composition which exhibits good long-term sealing, and bonding performance if a patch is used, at cryogenic temperatures.

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