Deep sea pipelines are used to transport oil and gas across large distances, at depths greater than 2km. The pipes are typically made from high grade steel plate (X80), which is bent, then seam welded to produce a section of pipe. During installation, sections of this pipe are welded together. In deep water, installation is usually conducted using the J-lay system. In the J-lay system, a string of pipe is hung from a barge, and allowed to fall to the sea floor, forming a J-shaped string. As the pipe is lowered, new sections are welded to the end of the string, and the barge moves forward. This system enables a good degree of accuracy in placing the pipe, and requires a less powerful ship than other laying systems. It does, however, place significant loads upon the pipe itself. 2000m Tmin=400m Pipeline w

Deep sea pipelines are used to transport oil and gas across large distances, at depths greater than 2km. The pipes are typically made from high grade steel plate (X80), which is bent, then seam welded to produce a section of pipe. During installation, sections of this pipe are welded together. In deep water, installation is usually conducted using the J-lay system. In the J-lay system, a string of pipe is hung from a barge, and allowed to fall to the sea floor, forming a J-shaped string. As the pipe is lowered, new sections are welded to the end of the string, and the barge moves forward. This system enables a good degree of accuracy in placing the pipe, and requires a less powerful ship than other laying systems. It does, however, place significant loads upon the pipe itself. 2000m Tmin=400m Pipeline w

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter31: Oxyfuel Welding And Cutting Equipment, Setup, And Operation

Section: Chapter Questions

Problem 31R: Approximately how long would it take a 50/50 mixture of oxygen and acetylene to flash back through a...

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