References
For pipelines under ASME B31.4, Clause 434.5.
For pipelines under ASME B31.8, Clause 841.2.4(c).
Query
Both the referred clauses specifies dent as a percentage of nominal pipe diameterfor pipe diameter greater than 12".
Please could you confirm whether it is referring to nominal...
Thank you all for the responses.
@LittleInch
By "sphere pigs", i meant spheres.
@pennpiper
No. I meant different pipelines of sizes 12" and 16". Not dual diameter pigging as you mentioned.
Wet gas field development project requires the transfer pipelines 12" to 16" sizes to be designed for slug removal by pigging.
The frequency of pigging is not available at this stage of the project. These pipelines also needs to be designed for intelligent pigging.
Please share your views on...
Clause 402.3 Stress From Internal Pressure
For both restrained and unrestrained pipelines, the circumferential (hoop) stress due to internal pressure is
calculated as (U.S. Customary Units)
SH =PiD/2t
The above equation may not be applicable for pipe D/t less than 20.
Is there any reference or...
