Specific Gravity of Subsea pipeline
Specific Gravity of Subsea pipeline
(OP)
What should be minimum specific gravity of a subsea pipeline so it won't float in water? I know it has to be higher than 1, but is there any recommended number by API, ASME, DNV, or by any Standard Specification? Any reference will be greatly appreciated.





RE: Specific Gravity of Subsea pipeline
503 The submarine pipeline system shall have a specific gravity sufficient to avoid floatation. If a sufficient
low probability of negative buoyancy is not documented, the following criterion applies:
yw x (b / (Wsub + b)) <= 1.00
Where:
γw = Safety factor on weight, 1.1
b = buoyancy
Wsub = Submerged weight
Remember - More details = better answers
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RE: Specific Gravity of Subsea pipeline
In any case as to just "float", the sea and incidentally shore and bottom soils or mucks are of course not a stagnant environment (there are different properties, currents and motions etc.), so there could more to consider in stability installation and service etc., than just "float" per Archimedes in fresh water or seawater etc. Like you I will await more learned or detailed comments.