Method and apparatus for the maintenance of pipelines

Details Method and apparatus for the maintenance of pipelines Method and apparatus for the maintenance of pipelines

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 1/024 (2006.01) F16L 55/18 (2006.01) F16L 58/04 (2006.01) G01M 3/28 (2006.01)

Patent

CA 2410027

Method and apparatus for the maintenance of pipelines. A number of points along the pipeline (30) is selected and the pipeline is raised at these points by an amount that the height difference between these points does not exceed the international flexibility standards. The pipeline (30) is supported at these points and thereafter maintenance is performed on those segments which have been raised enough to allow performance of the maintenance procedures. The distance between two adjacent points may be 30 meters and the height difference between two adjacent points may be not more than and preferably close to 22 cm. The initial cross-section of the selected segments are allowed to rest on the beds of the trenches because of their weights.

Procédé et appareil de maintenance de pipelines. Un certain nombre de points situés le long du pipeline est sélectionné et le pipeline est surélevé au niveau de ces points dans une mesure telle que la différence de hauteur entre ces points ne dépasse pas les normes de flexibilité internationales. Le pipeline est porté au niveau de ces points et ensuite la maintenance est exécutée sur les segments ayant été surélevés suffisamment pour permettre l'exécution des procédures de maintenance. La distance entre deux points adjacents peut être de 30 mètres et la différence de hauteur entre deux points adjacents ne peut pas dépasser 22 cm et de préférence par défaut. La section transversale initiale des segments sélectionnés peut reposer sur les lits des tranchées du fait de leurs poids.

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