B - Operations – Transporting – 08 – B
Patent
B - Operations, Transporting
08
B
15/12.9
B08B 9/04 (2006.01)
Patent
CA 1251003
METHOD OF REMOVING DEPOSITS FROM THE INSIDE WALLS OF A PIPELINE AND APPLYING PROTECTIVE COATINGS THERETO Abstract A method of removing deposits from the inside surface of a pipeline and applying a protective coating thereto includes cleaning the pipeline inside surface and treating this surface with a solution of corrosion inhibitor to form a coating on the pipeline inside surface followed by a subsequent treatment with a solution of corrosion inhi- bitor to maintain the strength of the coating thus applied. According to the invention, the proposed method offers cle- aning the inside surface by jets of liquid which produce a pressure differential between the core of deposits and their surface to separate the deposits from the pipeline walls, while simultaneously impregnating the remaining layer of deposits with a solution of corrosion inhibitor carried by such liquid, or treating the layer with a cor- rosion-promoting agent and subsequently impregnating the layer with a solution of corrosion inhibitor to form a coat- ing.
492300
Cherebedov Dmitry N.
Chernyai Alexandr I.
Kapralova Viktoria I.
Kryazhevskikh Nikolai F.
Lukin Evgeny G.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Trest "juzhvodoprovod"
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