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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.

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.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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The pipe has an outside diameter of 24", and a wall thickness of 1.5". 1. If the pipe is sealed (ie. Atmospheric pressure on the inside of the pipe), calculate the 2. maximum stress that occurs in the pipe during installation, and determine if the pipe will fail. If the pipe was not sealed (ie. Filled with water), what is the maximum stress that occurs in the pipe?
Transcribed Image Text:The pipe has an outside diameter of 24", and a wall thickness of 1.5". 1. If the pipe is sealed (ie. Atmospheric pressure on the inside of the pipe), calculate the 2. maximum stress that occurs in the pipe during installation, and determine if the pipe will fail. If the pipe was not sealed (ie. Filled with water), what is the maximum stress that occurs in the pipe?
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. sophers 2000m Tmin=400m Pipeline
Transcribed Image Text: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. sophers 2000m Tmin=400m Pipeline
Expert Solution
Step 1: Given data

Given data:

height of the pipe, h = 2000 m

rmin = 400 m

diameter of the pie, d = 24 inch = 24cross times0.0254 = 0.6096 m

t= thickness of the pipe = 1.5 inch = 1.54cross times0.0254 = 0.0381 m

[Note: 1 inch = 0.0254 meter]

Atmospheric pressure, Pa = 101.325 kPa = 101325 Pa

Density of seawater, rhoseawater = 1025 kg/m30.

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