It is a standard pressure vessel specification from a petroleum company. The beginning of the specifications states that allowable stresses are to be per ASME Section IID. We will ask for clarification. Thank you.
A customer specification has special requirements when using proposed allowable stresses based on guaranteed strength properties. I have not seen this before. We are quoting a ASME Section VIII, Div.1 vessel. What does this refer to?
Thank you.
In order to size the bolts for this type of flange, the contact force between the flanges is required. Since this is a non-standard rectangular flange, the calculation methods in Appendix Y are not applicable. Once the bolting is determined, I will run an FEA. Can anyone provide some insight...
Sorry if already posted but I do not see where the required bolt torque for Appendix 2 flanges using self energized gaskets (o-ring in this case) has been discussed.
Per PCC-1, the target gasket stress is 0 or very low. Therefore, the simple approach is not valid.
For the joint compound...
I am reviewing NACE MR0103-2015. 13.1.1 specifies the heat treatment conditions of carbon steel materials. Can someone verify my assumptions are correct or point me to a website or document that can verify these assumptions? Searching the forum and other websites, I assume the following...
Are these bolts impact test exempt per UHA-51(d)(1)(a) to -320 deg F? I assume the bolts are thermally treated above 1650 deg F per UHA-51(c)(1) even though the material specification does not give a solution anneal temperature. I have asked for our bolt supplier to provide more information...
We have a customer asking for PMI testing to verify 316/316L stainless steel materials in a pressure vessel with the ASME SA specification limits. They want to include the PMI tester accuracy in the results. For example, if the accuracy of the tester is +/-0.1 for Cr and the SA specification...
For the modification of PV values, is it possible for the equipment be located in a facility that is under control of the major hazard facility legislation per 2.2.5 (a)(iii) and also be located in an area where employees are not permanently stationed but may periodically visit for servicing per...
A seamless pipe shell welded to a seamless pipe cap on one end and an slip on flange on the other end. Spot RT is performed on the shell/pipe cap weld seam per UW-11(A)(5)(-b) in order to use a joint efficiency of 1.0 on the shell for the circumferential stress calculation. Since the shell can...
Yes, it is confusing because Figure UCS-66 General Note (d)(2): fine grain practice is defined as the procedure necessary to obtain a fine austenitic grain size as described in SA-20.
Are these flanges readily available or would it be better to use SA-350 LF2 material? Our flange distributors cannot locate flanges that meet the fine grain practice requirement per SA-20.
Thank you.
Ok, I'm not getting much help from the gasket manufacturer. They will give a total seating load for the c ring gasket. It looks like I should be able to replace Hp with this value in the calculation of Wm1. Does this make sense? For gasket seating, Wm2 will not govern so the minimum design...
