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Recent content by XL83NL

  1. XL83NL

    Minimum PWHT cycles for piping

    Your answer lies in B31.3 para. 331.
  2. XL83NL

    The S31254 super stainless steel plate was subjected to a welding process procedure experiment, with bending fracture

    The reason is most likely found in your materials failure analysis report
  3. XL83NL

    Bolts and Nuts for High-Temperature Applications – Ambiguities in European Standards

    Also bear in mind that ASME IID bolt stress allowable are bolt stresses for sizing the flange (i.e. non standard App 2 flanges), not for assembly bolt stress. ASME PCC-1 App O is for the latter, and it has a different 'basis' (e.g. it is quite normal to assemble a bolt with a stress equal to...
  4. XL83NL

    Welding of SA312-TP316

    I think the best entry into B31.1 for this subject would be 127.2.1(c).
  5. XL83NL

    Welding of SA312-TP316

    Not (100%) sure about this question for B31.1, but for a B31.3 perspective, I think the answer - from a Code perspective - would be yes. However, I would consider a WPS for such an application having that filler metal selection not be appropriate. I would go for e.g. ER 16-8-2 or similar...
  6. XL83NL

    Welding of duplex SS pipe 30 "

    API TR 938-C
  7. XL83NL

    Very High Temperature Piping Stresses

    Thanks. Did you mean N06002, and 253MA (instead of 256MA)? Neither of these seems to outperform N06025 when it comes to allowables above 1100 deg C.
  8. XL83NL

    Very High Temperature Piping Stresses

    Didn’t knew if the existence of that publication, excellent. Thanks. Do you happen to know of a more recent publication? These alloys are all great and to some extent readily available, but they’re some 60 years old. With nowadays technological developments there should be some alloys that...
  9. XL83NL

    Need help identifying strange fitting

    Do you have a picture (or more than 1) from a different angle?
  10. XL83NL

    Inventor 2026 ...................

    Yes. Version 2026.0.1 is current. See https://help.autodesk.com/view/INVNTOR/2026/ENU/?guid=Inventor_ReleaseNotes_updates_2026_0_1_fixed_bugs_may_html
  11. XL83NL

    ASME B16.9 fittings in EN-13480 design code

    For fittings, EN 13480 relies on EN 10253. That standard has two types of design for each fitting; type A and B. Type A has a pressure resting that’s less than an equivalent sized seamless pipe rating. The derating is quite complex, or at least not straight forward. Type B has the same rating as...
  12. XL83NL

    Tri-clamp unit

    Luka, Im the EU as well, and given the businesses we work for, we have a lot of similarities. But Id suggest you to not - ever - go for a TC with these dimensions and pressures ever again. You've been given sound (and free!) advice form LI and ES here, and take that for granted. I get the...
  13. XL83NL

    ASME B16.9 fittings in EN-13480 design code

    Interesting question. (Im Dutch as well and we also often stumble on some of the nasty quirks and shortcomings of working with EN 13480). Apart from the previous advices given, what you could also is show that the 'B31.3' equivalent strength (or call it pressure rating) meets the EN 13480...
  14. XL83NL

    What materials for design of ultra-supercritical boiler tubes?

    There’s some literature on this subject. I’m not familiar with these applications though I have done some high temp jobs (with lower pressures) using some of these alloys. From what I’ve read 740/740H is mentioned frequently said to be the next best candidate, along with 617. Their resistance to...
  15. XL83NL

    Bentley Autopipe Question

    Hi Idan. I’m happy to show/help you but it’s a bit difficult through a forum. AutoPIPE is a bit quirky with these kind of things at first but once you get the hang of it, it’s a quite good I think. Their (online) forum and help are also quite good. Are you in Amsterdam by any chance this week...
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