METHOD OF ACTIVE PIPELINE REPAIR Russian patent published in 2010 - IPC F16L55/17 F16L55/168 F16L55/16 

FIELD: construction industry.

SUBSTANCE: invention refers to repair of active pipeline transferring gas or liquid under pressure up to 1.6 MPa. Section of pipeline with local damage (as blue hole) is treated as follows: drainage pipe with clearing hole not less than 6 mm is installed, at least three layers of binding cloth band impregnated with two-component adhesive are wrapped on both sides from drainage pipe and drainage pipe is blanked off. Used binding band is impregnated at first with one component of adhesive and just before wrapping - with its second component actuating adhesive curing during process of band wrapping on damaged section of pipe. Drainage pipe is blanked off mechanically by dome nut, bolt or screw. Sealant discharge to drainage pipe is possible if gas or liquid are still discharging with further blanking off of pipe.

EFFECT: improvement of strength and reliability of pipe repair performed on active pipeline.

3 cl, 9 dwg