METHOD OF REPAIRING SUBMERGED PIPELINE Russian patent published in 2005 - IPC

FIELD: pipeline engineering.

SUBSTANCE: method comprises mounting an assembled cylindrical coupling on the damaged section of the pipeline, the coupling being provided with the bottom and top branch pipes for permitting a ring space between the coupling and pipeline, sealing the coupling faces, supplying composition material based on an epoxy resin through the bottom connecting pipe in the ring space until the resin appears at the outlets of the top branch pipes. The faces are sealed by means of flexible spacers. The composition material is made of epoxy resin on the base of epoxy oligomer, solidifier, which is composed of amide and imidazole groups, and powder filler . The composition comprise, in mass parts, 100 of epoxy resin, 10-60 of solidifier, and 20-800 of powder filler.

EFFECT: enhanced reliability.

3 dwg