Deep Water Pipeline
Deep Water Pipeline
(OP)
Dear all,
What are the key factors regarding steel pipeline for deep water application? Basically is there any difference between shallow/deep water or onshore pipeline material? Is it allowed to follow API 5L for offshore applications?
Best regards,
Akbari
What are the key factors regarding steel pipeline for deep water application? Basically is there any difference between shallow/deep water or onshore pipeline material? Is it allowed to follow API 5L for offshore applications?
Best regards,
Akbari





RE: Deep Water Pipeline
RE: Deep Water Pipeline
However most subsea pipelines and especially deep ones are designed to DNV OS-F101 which includes within it it's own pipe material specification which you need to use.
Design is completely different.
As dekdee says, a very very basic question without any context or background so a pretty bland response...
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Deep Water Pipeline
(1)CV value on Charpy test (API 5L/ISO 3182 – Table 22)
(2)Share % of DWTT test (API 5L/ISO 3182 - 9.9.1 DWT test for PSL 2 welded pipe)
(3)Carbon equivalent - % of Ceq/Pcm (API 5L/ISO 3182 – Annex J – Table J.1)
(4)Specification of coating - 3LP+concrete (?)
RE: Deep Water Pipeline
You can also see the sections of ASME B31 Pipeline Codes B31.4 or B31.8 relevant to the minimum design requirements for offshore pipelines. The design of an offshore pipeline is not completely different, as there are many, many similarities, however the environmental and installation stresses are far different than what you may be used to for onshore pipelines.
RE: Deep Water Pipeline
RE: Deep Water Pipeline
RE: Deep Water Pipeline
RE: Deep Water Pipeline
RE: Deep Water Pipeline
Whether you need concrete coating is dependent on the design requirements / size, wall thickness, currents, waves, trenched or surface laid etc.
Just make sure that the design code you use allows API 5L / 3183 pipe - DNV doesn't allow it and is in common use along with B 31.4/8 for subsea pipelines
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Deep Water Pipeline
RE: Deep Water Pipeline
RE: Deep Water Pipeline