Recent content by AMinati

I'm checking some calculations of my software for the minimum thickness of a cylindrical shell. I do not understand why I get different results if I use the formula UG-27 (1) from the one that uses the Mandatory Appendix 1 (1). The condition "P does not exceed 0.385SE" is satisfied but I get the...

Can a 1600 mm ID compressed air vessel (10 barg) subject to corrosion (3 mm) and fatigue be manufactured according BPVC Section VIII Division 1 without manhole, and consider as inspection openings according to UG-46, only the two flanged connections (200 mm ID) at the center of the two upper and...

ASME II Vol. A Edition 2013 part 2 allows to use welded pipes according to european code SA/EN 10217-1, but in the stress tables there is none of these materials. Can I use these materials for a pressure vessel (not U stamped)? and which stress can I use? the ones reported in the code EN...

Assume your Korbogen Head is elliptical (or according ASME Code) and check the tollerances of the real shape against the theoretical. If the check pass the head can be accepted as elliptical (or according ASME Code) See also UG-81. Best Regards AMinati

Some questions regarding ASME Code and PED: I need to design and manufacture pressure vessels according to PED requirements (not U stamped: for the european market only) and the requested design code is ASME VIII Div. 1. Can I use only materials allowed in ASME II? Or can I use also EN...

What means integral to a fired boiler? Our vessel will be connected by welding some nozzles to piping according B31.1 which is "S" stamped, so I think I have to design and manufacture according ASME I? I know a lot of programs according ASME VIII Div. 1 (& 2), but none according ASME I! Can I...

We are manufacturing a steam drum (a pressure vessel so named by our costumer). This vessel is not subjected to fire or any other heating source. This vessel have to be calculated and manufactured according ASME I or ASME VIII Div. 1? Many thanks in advance AMinati

We are building a pressure vessel for Canada and we are waiting for the the Canadian Registration Number CRN and related approvals. In the ASME nameplate we have to stamp also the CRN or not? Many thanks in advance AMinati

Many tanks to all, I will try to certificate the bolting material with both SA-193 and SA-320 B8M! AMinati

I am manufacturing two vessels according ASME VIII Div. 1 (U stamp + National board) and some openings are made by fittings according to DIN 11851 rules. For the opening calculation I have no problem and I think that fitting DIN 11851 cannot be considered quick openings, but how can I calculate...

I have to use bolting material SA 320 B8M in the temperature range between -170 °C to + 65 °C. Bolting material according to SA 193 B8M Cl.2 and SA 320 B8M seem to be the same. Same chemical composition and stresses. Why the first can be used up to +427 °C and the second up to +38 °C only? It...

In my opinion Expansion joint are welded components and require to be manufactured by an U stamp holder with a partial data report. AMinati

We have built a pressure vessel in carbon steel (22 mm thickness). Weldings need to be impact tested. Longitudinal and circumferential welds are made according two different WPS (the first for all welds less the one for the clousure of the two half part of the vessel, the second for this...

I have done confusion beetwen design and drawing (in my language is quite similar)! Now all is clear Many tanks AMinati

Thank you to all UW-15(b) states that strength calculations are not required if the manufacturer uses certain attachment details. However, each of those attachment details require the manufacturer to make a simple size (not strength) calculation. Even the simplest attachment detail requires the...