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Hi all, I am confused by ULT-27 about the determination of shell minimum thickness. Per ULT-27(a) and ULT-27(b), it sounds that: Design pressure = MAWP+Loadings(per UG-22) for instance, Before the shell norminal thickness selected, how can I know MAWP? As far as I know it: MAWP may be equal...

what are the pressure vessel codes used in Mexico? Thanks in advance.

Thank you so much!

Hi all, Is there anyone knowing the European materials vs ASTM material such as A182-316L corresponding European SS material? Thanks in advance.

120" ID seamless SA516-70 pipe is available? Oo.......

Thanks all

Hi All, I would like to confirm something in U stamp requirement to a small pressure vessel. The design pressure is 125 psig The shell will be 12 inches pipe sch40 Ends will be cap in sch 40. Length of the shell will be 4 feet. Per my understanding to U1(c)(2)(i) of ASME VIII-1, it is within...

First of all, I would like to thank all your messages. MJC, The capacity of the LIN storage tank is 450,000 USWG. Z Wang

HI all, I run into a problem on rupture disc set pressure for a LIN storage tank. The design pressure of the LIN storage tank is P=2 psig I assumed MAWP (Maximum Allowable Working Pressure) equal to design pressure. MAWP=2.0 psig Disc rupture pressure tolerance ?P= ±50 mbar (±0.725 psi)...

pennpiper, Thanks for your message. It is a fuel gas piping line, the design pressure is around 280 psig. Since I do not have ASME B31.2, I misunderstood that should be B31.5. I am wondering if there are limits of threaded joint in B31.2. Thanks,

Hi all, I am wondering if ASME B31.5 threaded joints are allowable in natrual gas piping. Thanks in advance

Thanks for your posts. I have a problem about a flange connection. A gasket with 285mm OD x 250mm ID doesn't match raised face 285mm OD X 200mm ID of one flange (Type 11 PN63). The other is a 285mm OD X 250mm ID flange fitting. If the flange and the gasket can pass the stress verification per...

Hi all, When I use Appendix 2 to verify ANSI flange, why the calculated flange thickness is not equal to ANSI standard thickness? In other words, if I design a non-standard flange, can I use appendix 2 to design it? Thanks in advance.

jte, If an existing vessel without a flange attached (nozzle pipe only) even if I later welded a flange on the nozzle neck, the limit of pressure vessel boundary is still in the first circumferential joint, saying case 1? Not the face of the welded flange? I totally lost. Thanks for your post.

jt, Why the pipe diameter is 6" maximum? If larger than 6", is it acceptable? Thanks in advance.

jt, I understood your idea. I hope I can convince AI for this change. After I add a long pup, it will become case (1). Thanks,

jt, Thanks for your message. I just checked code and found the limit of pressure vessel boundary when external piping or other mechanical equipment or pressure equipment is to be attached to the vessel: (1) for welded connections, the first circumferential joint (2) for screwed connections...

Thanks for all repliers. I checked in Tennessee. It sounds they use IBC2006.

jte, Thanks for your post. Sorry for my poor english writing.

jt, After replacing the pipe connection by a couple of flange connection, one welded flange and welding will be within pressure vessel boundary per ASME VIII-1 definition. The inserted two 150# flanges are bolted. One is welded in piping line. The other is welded on the weld prep of the vessel...