Download: Construction and installation of a pipeline underwater


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Construction of a submarine gas pipeline by Medgaz (Algeria Spain Europe pipeline)

The submarine pipeline will be built using a Lay Barge. This involves using a boat or mobile platform in which the tubes will be welded before being laid on the seabed.

There are two methods for this type of installation: "S-shaped" and "J-shaped". The former can be applied in both shallow areas and in very deep areas (up to 2.500 meters). This involves welding and laying the tubes in a horizontal position, so that the pipeline will adopt an "S" shape at the exit of the boat to the point where it rests on the seabed.

The "J-laying" involves welding the tubes in a vertical position. It is only used for depths between 400 and 3.500 meters, depending on the diameter of the tube. As the platform moves forward, the pipeline plunges under the sea vertically in a "J" shape, from the launching point to the bottom.

MEDGAZ will be able to use both systems for the construction of the gas pipeline in very deep water. Following we describe the pose in J ...



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