API RP 1102 Calculations too High?

fyre · Nov 14, 2023

For my structural loading path class, I have been tasked with presenting a design for an oil pipeline for our class to discuss.

I have been using the API RP 1102 for the codes but all my values come out way too high to make sense. I have currently only attempted calculations for the buried part, and honestly about to just throw the whole code away and just use actual calculations. They would prefer if I can use the code though.

Let me know if you have any insight!
-Fyre

CarlB · Nov 15, 2023

What do you mean, values are too high?
Do they exceed allowable stress? They look low to me.
At 6 ft of cover, there shouldn't be any overstress to pipe, unless really thin walled, or being operated at a very high pressure.

akpipelineengr · Nov 16, 2023

Also, what kind of pipeline are you designing? Your inputs don't make sense. 3" wall thickness???? Ductile iron???

Have you read about the DAPL? If I recall correctly, the main line is 30" diameter, API 5L X70 steel pipe, up 0.625" wall thickness.

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API RP 1102 Calculations too High?

fyre

Student

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CarlB

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akpipelineengr

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