METHOD TO SEAL PRESSURISED PIPELINES Russian patent published in 2012 - IPC F16L55/175 

FIELD: construction.

SUBSTANCE: proposed method of repair makes it possible to independently repair pipelines of any diameter without application of expensive process equipment in restricted conditions. The method to seal the pressurised pipelines consists in the fact that a damaged section of a pipeline and an adjacent area are cleaned, degreased and dried. A glue shaping composition is applied onto the damaged section along the entire diameter of the pipeline. To ensure even distribution of load at the glue joint and rational use of the glue seam area, the damaged section with the applied shaping glue solution is embraced with a flexible steel tape with overlapping opposite to the damaged area. The tape edge is fixed with the help of the glue composition or rivets. Remains of the squeezed glue composition are levelled, and the pipeline is left in this position until the glue composition hardens.

EFFECT: realisation of this method makes it possible to extend service life of pressurised pipelines, to increase labour efficiency.

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