underground pipeline
underground pipeline
(OP)
Does underground piping always require pipe stress analysis, even if it is an ambient pipeline?
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RE: underground pipeline
Richard Ay
COADE, Inc.
RE: underground pipeline
**********************
"The problem isn't working out the equation,
its finding the answer to the real question." BigInch
http://virtualpipeline.spaces.live.com/
RE: underground pipeline
As Biginch point's out ambient conditions can vary. Use your experience and the physical conditions to which the pipe will be subject to determine if a formal stress analysis is required or if you are unsure engage a Company who can make a judgement based on the physical conditions to which the pipeline is subjected to.
RE: underground pipeline
RE: underground pipeline
Take the specified minimum yield strength of the pipe in MPa and divide by six. If the difference between installation temperature and operating temperature in degrees Celsius is greater than that, then not only is stress analysis mandatory, but you might find it difficult to "pass".
In other words:
For [(SMYS/6), MPa] < [(Th - Ti), C], stress analysis is mandatory
Regards,
SNORGY.
RE: underground pipeline
Please provice detail reference reqard to
For [(SMYS/6), MPa] < [(Th - Ti), C], stress analysis is mandatory
which reference book?
Please
Leonard S. Thill
RE: underground pipeline
SNORGY has already said it is a "Rule of Thumb" he utilises - maybe there is no reference to a book. Not everyone has a list of books but use judgement!!!
RE: underground pipeline
Regards,
SNORGY.
RE: underground pipeline
**********************
"The problem isn't finding the solution, its trying to get to the real question." BigInch
http://virtualpipeline.spaces.live.com/