BURIED LBV DISPLACEMENT
BURIED LBV DISPLACEMENT
(OP)
Dear Sirs,
I've performed stress analysis on a buried pipeline which includes a Line Break Valve(LBV) before the pipeline become aboveground.
According to my analysis, the displacement of the LBV is about 110 mm. Is this displacement allowable? What is the allowable displacement of the LBVs or pipelines?
It should be mentioned that the pipeline diameter is 20", Min soil Temp. 15 C and operating temperature is 47 C. I have not placed any anchor support at above and underground interface.
I've performed stress analysis on a buried pipeline which includes a Line Break Valve(LBV) before the pipeline become aboveground.
According to my analysis, the displacement of the LBV is about 110 mm. Is this displacement allowable? What is the allowable displacement of the LBVs or pipelines?
It should be mentioned that the pipeline diameter is 20", Min soil Temp. 15 C and operating temperature is 47 C. I have not placed any anchor support at above and underground interface.





RE: BURIED LBV DISPLACEMENT
Remember - More details = better answers
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RE: BURIED LBV DISPLACEMENT
The temperature I used for my calculation is:
∆T=47(operating Temp.)-15(Min. Soil Temp.)=32 °C
Also, pipeline material is API 5L Gr. X60
RE: BURIED LBV DISPLACEMENT
RE: BURIED LBV DISPLACEMENT
Movement of your valve will be least of your problems as you grow a large ice bowl around the pipe....
Once you start to grow ice you change everything and essentially it becomes an anchor.
Something isn't right here - provide more info.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: BURIED LBV DISPLACEMENT
RE: BURIED LBV DISPLACEMENT
Don't think that's going to give you 110mm unless you've built this in some sort of super slippery slime?
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.