Apparatus, systems and methods for plugging a high...

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

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Details

F16L 41/06 (2006.01) F16L 55/10 (2006.01) F16L 55/105 (2006.01) F16L 55/128 (2006.01)

Patent

CA 2524459

A method of plugging a pipeline includes the steps of welding onto the exterior of the pipeline (10) first (12) and second (14) spaced apart collars, each having a sealing face (26,26A) in a plane perpendicular the pipeline (10) axis. A containment housing (34,36) is affixed by welding to the collars (12,14) to fully encompass a section of the pipeline (10) between the collars (12,14). A tapping (60) machine is then removably attached to an open top of the containment housing (34). Using the tapping machine (60) a short length of the pipeline (10) is cut and removed from between the collars (12,14) leaving two open exposed pipe ends (78,80). First and second seal elements (92,94) are positioned between the collars (12,14), each having a forward sealing face. The seal elements (92,94) are forced apart from each other into sealing engagement with the collar sealing faces thereby closing the open, exposed ends (78,80) of the pipe (10).

L'invention concerne un procédé d'obturation d'une conduite de transport. Ledit procédé consiste à souder à l'extérieur de la conduite de transport (10), des premières (12) et secondes (14) collerettes séparées, chacune présentant une face d'étanchéité (26, 26A) dans un plan perpendiculaire à l'axe de la conduite de transport (10). Un logement de confinement (34, 36) est fixé par soudage aux collerettes (12, 14) afin d'entourer complètement une section de la conduite de transport (10) comprise entre les collerettes (12, 14). Une machine de taraudage (60) est ensuite fixée amovible sur une partie supérieure ouverte du logement de confinement (34). Une courte longueur de la conduite de transport (10) est découpée et enlevée entre les colliers (12, 14) à l'aide de la machine de taraudage (60), laissant deux extrémités de tuyau exposées ouvertes (78, 80). Des premier et second éléments d'étanchéité (92, 94) sont positionnés entre les collerettes (12, 14), chacun présentant une face d'étanchéité avant. Les éléments d'étanchéité (92, 94) sont séparés par force pour venir en prise avec les faces d'étanchéité des collerettes, ce qui permet de fermer ainsi les extrémités exposées ouvertes (78, 80) du tuyau (10).

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