Offshore Operation Facilities

6.2.3. Strength Design for Submarine Pipelines

The technological design above-mentioned has illustrated how to determine the diameter of submarine pipelines; however, it cannot solve other attributes of the pipe (e.g., structure and wall thickness). Thus, the following subsections describe how to determine other attributes by strength design of the pipeline.

6.2.3.1. Structure of Submarine Pipelines

This mainly refers to the cross-section construction type of the submarine pipeline. The cross-sectional structure usually has two main types.

1. Single-layer pipe structure

As shown in Figure 6-3(a), its interior is a steel pipe that has a certain wall thickness. Anan anticorrosion insulation layer is painted outside the steel pipe, usually either a coal ...