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Metengr: Do you have the code case number or a pdf copy of it? Was it for B31.1? TGS4: I will send you an email to hopefully get in contact with the right people!

Hi, I was just wondering if anyone has any experience with using 3D metal printed parts in ASME B31.3 or Section VIII Division 1 work? Are there any special requirements regarding qualifying the material and allowable stress values? I'm trying to find any information but can't seem to find any.

I would interpret UG-14 to mean flanges even 4" NPS and below cannot be machined from hot rolled bar or forged bar. Which is a common statement in SA-182, SA-105, and SA-961. So it would appear the ASME is trying to follow the current material specifications. But Appendix 2 appears to...

But UG-14(b) restricts the use of rod or bar for all flange types and via UG-6(b) forged bar would appear to have the same limitations. Also Appendix 2-2(a): "(a) Materials used in the construction of bolted flange connections shall comply with the requirements given in UG-4 through UG-14."...

Hi, I'm hoping someone can explain this to me as I can't figure it out! ASME VIII Div. 1 Appendix 2-2(d) states: "(d) Fabricated hubbed flanges shall be in accordance with the following: (1) Hubbed flanges may be machined from a hot rolled or forged billet or forged bar. The axis of the...

I agree with David. I think a closer interpretation would be here (IX-80-67) Link The governing thickness would be the 3/8", "set-on" the shell.

Also check out QW-306

Hi, I'm just wondering if I'm interpreting this correctly. if your base metal elongation is greater than 20% and the thickness of your test coupons is 0.119, 0.294 (nominal from pipe), and 0.375" you would need to create a test jig for each thickness?

You could use code case 2577 for section VIII division 1 which allows 316L up to 1200F.

I was reviewing my taylor forge documents and realized that for the operating case the bolt load in an external pressure case would be written Wm1e=Hp-H = 2 x b x 3.14 x G x m x Pe - 3.14 / 4 x G^2 x Pe for G <= 8 x m x b, for G > 8 x m x b Wm1e = 0. t= G x sqrt((0.3 x Pe)/(S x E) + (1.9 x...

Thanks for the reply! A little off track but for a external pressure thickness calculation for a blind flange, you could use UG-34(c)(2) eq. 2 modified by 2-11? I think the below would be correct, you only modify the gasket seating load by the W value in 2-11. t= G x sqrt((0.3 x Pe)/(S x E) +...

Hi, I was wondering if anyone knew if ASME Section VIII Division 1 Appendix 41 can be used for external pressure calculations? The definition of P in Appendix 41 is design pressure and does not refer to internal or external as it does in UG-34 (UG-34 is only for internal pressure, see...

I was just going over UG-81(d) for out of roundness of the skirt and comparing it to the tolerances in B16.9 table I-12 for out of roundness. For a 10" cap, 1% X 10.75" = 0.11" permitted out of roundness for UG-81(d), but per table I-12 the allowed out of roundness is 0.16"+0.12"=0.28". Am I...

Hi, I did come across this: Link Would having a head template be the best approach to verify a ASME B16.9 end cap for a code vessel to fulfill UG-90(a)(9) requirements? It's a little confusing with UG-44 and UG-11(c), which allow ASME product standards to be used in code vessels and are...

Well I did find a reference interpretation for standard pressure parts unfortunately studs aren't in there. Apparently CMTRs are not required for flanges, B16.9 fittings, B16.11 fittings, and pipe! If I could only find the requirement for studs!!! Any comments on the below interpretation...

Thanks for the reply Turbo77, would it be correct to assume the statement in UG-93(a) "...in complete compliance with a material specification of section II..." would require verification of the MTR to the product specification to ensure it is in compliance with the specification or would the...

Thanks for the reply. Do you have a code reference I can look up? The only reference that I know that requires evaluation of a MTR or CMTR is UG-10 but it wouldn't be applicable here since the material is acceptable for code use.

The answer would be yes assuming the blind flanges are rated for the test pressure and you are only talking about nozzles connections. The pressure vessel scope ends at the flange face.

Hi, I'm just trying to get my head around traceability requirements for bolting on a code vessel. Let's say you are built a 2013 edition vessel and you have bolting that has a CMTR that complies with the SA-193 2007 edition. UG-12 provides guidelines regarding acceptable bolting. SA-193 is...

Hi, I'm a little confused with the required ASME markings and data report for a combination unit (jacketed vessel or heat exchanger). If I had a jacketed vessel I would have 2 chambers (jacket, and inner vessel), the jacket design conditions are internal pressure 150psig@300F, external...