Integral flexible-pipe risers

Integral flexible-pipe risers consist of multiple lines which cannot be retrieved individually. The configuration of such risers may range from relatively simple arrangements, such as where several flexible production lines are incorporated within a common outer jacket, through to more complex arrangements, such as IPUs and multibore flexible-pipe risers as described below.

Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards

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