Equation in UG-27c vs Appendix 1 in ASME VIII
Equation in UG-27c vs Appendix 1 in ASME VIII
(OP)
Equation in UG-27c gives a different minimum thickness than the equation in Appendix 1, 1-1(a)than for the same pressure vessel.
Which one should I use? Am I missing something?
Which one should I use? Am I missing something?
RE: Equation in UG-27c vs Appendix 1 in ASME VIII
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand
RE: Equation in UG-27c vs Appendix 1 in ASME VIII
RE: Equation in UG-27c vs Appendix 1 in ASME VIII
The equipment that I'm looking appears to have a 2% difference between the two equations.
While that may not seem like much, as you imagine if the thickness is closer to the higher reading would it be risky to go with the higher Tmin? It will help increase the inspection interval but i wouldn't want to do that if there is a risk of failure...
RE: Equation in UG-27c vs Appendix 1 in ASME VIII
RE: Equation in UG-27c vs Appendix 1 in ASME VIII
A 2% difference is nothing to be concerned about (to get a 2% difference your cylinder would have to be a lot thicker than the required thickness). Use whichever equation you prefer.
-Christine
RE: Equation in UG-27c vs Appendix 1 in ASME VIII
TGS4: existing
Christine74: Thanks for pointing that out I didn't realize that.