Nozzle Stress Question
Nozzle Stress Question
(OP)
This might seem like a dumb question, but it's late and I'm stuck on this one. Does the pipe in a nozzle wall have to meet B31.3 wall thickness requirements or does it have to comply with ASME Sec 8 Div 1?
If it's constructed of A106B, do I use 20,000 Psi stress? Is there a way to disregard the mill tolerance if I UT the entire nozzle? The pipe is listed as 12" STD A106B.
If it's constructed of A106B, do I use 20,000 Psi stress? Is there a way to disregard the mill tolerance if I UT the entire nozzle? The pipe is listed as 12" STD A106B.





RE: Nozzle Stress Question
To waive Mill Tolerance by doing UT, you would not be able to change anything on the the material certificate, so "formal, legal" credit could not be obtained without a professionally endorsed engineering assessment.
Regards,
SNORGY.
RE: Nozzle Stress Question
RE: Nozzle Stress Question
For UG-37 calculations, for neck wall thickness tn, mill tolerance is disregarded, use the nominal.
Regards,
Mike
RE: Nozzle Stress Question
Thanks again for the rapid help - eng-tips works again.
RE: Nozzle Stress Question