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  1. Konrad

    ASME New Certificate Scope for the Parts

    What you need is U-11, 12, 13, or even 14 certificate: U-11. Manufacturer of pressure vessel parts at the above location only U-12. Manufacturer of pressure vessel parts at the above location and field sites controlled by the above location U-13. Manufacturer of pressure vessel parts at field...
  2. Konrad

    ASME SECTION IV Software available?

    SecVIII-1 is used in more typical applications, you can say that in general all pressure vessels are similar. SecIV is about small boilers- try to find two similar constructions of heat exchangers on the market! Konrad Anikiel
  3. Konrad

    European Pressure Directive (PED

    Histogram, could you say which particular tuv is it? There are couple different tuv's around. Konrad
  4. Konrad

    DIN Flange on an ASME VIII Div1 Pressure Vessel?

    And material to UG-10
  5. Konrad

    European Code us Asme Code

    The study for the EU what you say, well, i have it, but the results are stange because its said that there is more difference between several workshop than between several codes (Div 1 Div2, DBF or DBA). I see it very theorethical. I see it very deeply true. I can spend more time on designing...
  6. Konrad

    Split repad efficiency

    Cluain: you are 100% right, 97/23 is newer, thus built on bad experience of older stuff. Sending a sheet of paper with questions and having someone from the purchaser signed it off makes people ask themselves questions, otherwise called "think". Doesn't cost a penny, may save someone's skin...
  7. Konrad

    Split repad efficiency

    FYI, it has been discussed here: http://www.onetb.com/forum/viewtopic.php?t=86 Cheers Konrad
  8. Konrad

    Content of elements in welding material

    Thanks. QW-404.12 applies to supplementary essential variable in GTAW, but it shows clearly the intent. That's it!
  9. Konrad

    Content of elements in welding material

    Metengr, thank you, this is what I feel, but could you please help me with finding a clear justification of this in SecIX? The AI needs to be convinced somehow... The process is GTAW. Change in F-no is essential both for process and welder. QW-404.4 describes change from assigned to unassigned...
  10. Konrad

    Content of elements in welding material

    Hello, We're using UNS S43932 under SecIV. There's Note 13 applicable under Table HF-300.1 saying "Filler metal shall be Type 430 with a nominal titanium content of approximately 1.25%". AWS 5.9 ER430 does not specify Ti content, so we can order a custom crafted filler wire with special content...
  11. Konrad

    Inwardly flanged vs outwardly flanged

    ukinam, No, I don't consider 1a inwardly flanged. This is not what anyboby said here, including the North Americans. The issue begins clear after browsing an inch of paper forward and opening the book on Page 139, HLW-411.2(a) and (b)- they're linked to sketches which leave no doubt, and noone...
  12. Konrad

    Inwardly flanged vs outwardly flanged

    ukinam, No, I'm not intending to use this shape. But it's quite widely used, for instance as bottoms of LPG portable containers. Just my thoughts about inwardly/outwardly flanged dish began on shapes #1 and #2- but apparently it doesn't have anything to do with shape of the dish.
  13. Konrad

    Split Reinforcing Pads

    solidhardhead, this issue was discussed a time ago here: http://www.onetb.com/forum/ftopic86.html Konrad
  14. Konrad

    Inwardly flanged vs outwardly flanged

    Well, I think that CodeJackal's understanding is backed with some sense. I asked myself a question: why did they say that "inwardly" is less safe than "outwardly", and required more welding on the inwardly flanged body? I think the answer is in the fatigue due to alternating pressure. 1b, if...
  15. Konrad

    Inwardly flanged vs outwardly flanged

    doc9960, Why do you think that my sketch #2 is not a flanged head/tubesheet? Would that mean it's exempted fom double weld requirement or that it's not permitted at all? Konrad
  16. Konrad

    Inwardly flanged vs outwardly flanged

    Hello, HW-711.1 SecIV allows welding a flanged tubesheet with a lap joint. Whether it has to be a single or double weld, depends on a word that I don't understand. An outwardly flanged tubesheet can be welded with single fillet lap joint, and an inwardly flanged one- must be welded with double...
  17. Konrad

    Interpretation: VII-1-04-61 Subject: UHX-10(a)

    And for me it's the only hope to make a HX right: to exempt it from UHX. Konrad
  18. Konrad

    Flat walls with ribs

    GenB, As a matter of fact, I most often do bursting test of a ribbed structure. The disadvantage is that BPVC provides for parts, not connections between them. This leaves an open discussion what to do when during a bursting test some welded/brazed joint breaks. Looks like some requirements are...
  19. Konrad

    Flat walls with ribs

    Well, I'm not setting stresses to 99% of the Yield Point of the piece of material actually used, like some suiciders do :-) Konrad
  20. Konrad

    Flat walls with ribs

    The reasons for using ribbed flats are various. Sometimes I use rare and expensive materials, sometimes it's too thick to form, sometimes the design gets more compact with flat, sometimes it's just a pretext not to use UG-34's heavy wall thickness. Konrad

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