Method of repairing a leak in a flange of a gas pipe

F - Mech Eng,Light,Heat,Weapons – 16 – L

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F16L 55/175 (2006.01)

Patent

CA 2564109

A method of repairing a pipe (11) containing a pressurised fluid and comprising at least one leak, for instance in a flange (10), including the steps of installing a flexible and sealed casing (12) engaging the pipe on each side of the leak site to enclose same, said casing comprising a valve arranged at the highest point if the fluid is a gas or at the lowest point if it is a liquid; installing a rigid and sealed casing (20) engaging the pipe on each side of the flexible casing and enclosing same; and injecting a polymerisable liquid material into the rigid casing, whereby the flexible casing is enclosed in a sleeve of polymeric resin following the polymerisation of the polymerisable material.

Méthode de réparation d'une canalisation (11) renfermant d fluide sous pression et comportant au moins une fuite, par exemple à l'endroit d'une bride (10) , comprenant les étapes de mise en, place d'un coffrage (12) souple et étanche prenant appui sur la canalisation de chaque côté de l'endroit où se trouve la fuite pour emprisonner cette dernière et comportant une valve disposée au point le plus haut s'il s'agit d'un gaz ou du point le plus bas s'il s'agit d'un liquide, de mise en place d'un coffrage (20) rigide et étanche prenant appui sur la canalisation de chaque côté du coffrage souple et emprisonnant ce dernier, et d'injection d'une matière liquide polymérisable à l'intérieur du coffrage rigide, le coffrage souple étant alors emprisonné dans un manchon de résine polymère après polymérisation de la matière polymérisable.

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