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  • Users: Konrad
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  1. 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...
  2. 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...
  3. Konrad

    Flat walls with ribs

    Hello, How do you calculate flat walls strengthened with ribs? U-2(g)? Konrad
  4. Konrad

    what is saved what is not

    Hello, Could someone clarify me what exactly is saved and what is not: 1. when a generic instance of part is saved 2. when a child instance of part is saved 3. when a generic instance of assembly is saved 4. when a child instance of assembly is saved 5. when a drawing is saved Thanks Konrad
  5. Konrad

    Sec VIII-1 UW-13(d)

    Hello, I need some help with understanding applicability of UW-13(d). Does it apply to joints between shell and tubesheet of a heat exchanger with both tubesheets fixed and straight tubes? Should this tubesheet be treated as a stayed/supported plate, thus exempted from UW-13(d) ? Thanks Konrad
  6. Konrad

    UW-12(f)

    Hi How do you treat requirements of UW-12(f)? My access to ASME interpretations just expired, maybe someone could help me: 1. Does it require to make these tests only once in a lifetime or each time a new vessel is welded? 2. Does it require to make a test on fillet or edge welds? What about...
  7. Konrad

    SecIV methods of design

    Dears, I need your opinion on right meaning of last 2 paragraphs of the Preamble to SecIV. Do they allow other methods of designing than proof tests when they're not described in SecIV? Can I use Finite Elements under SecIV? Konrad
  8. Konrad

    Tubesheet-to-hemi head joint

    Dears, I wonder what's your opinion on applicability of UG-34 to a joint between hemispherical head and a round, flat tubesheet welded into a circular hole in the head? Axis of the tubesheet passes through the center of the head, but is not parallel to axis of the head's skirt. Tubesheet is...
  9. Konrad

    Welding progression uphill / downhill in Sec IX

    Hello, The question is whether it's enough to qualify a PQR for both uphill and downhill when a welder makes one continous bead all around the pipe in 6G without stopping? May seem strange, but I found no clarification about it. Konrad
  10. Konrad

    Multiple, duplicate bolier fabrication HG-515.4(b)

    Hello, My AI does not know, maybe I can get some help here. Sec IV allows production without AI's witnessing, under HG-515.4(b). Should I write the required procedure for just one project and one design, or can it be "flexible", so it might be used many times with various projects? It has to be...
  11. Konrad

    Safety relief valve selection

    I don't live in America and it's the first time I use Section IV of the ASME Code. I can't find out how do I select the relief valve. The Code requires the valve to have "steam relieving capacity, in pounds per hour" rated. And almost all valves I could find available, are rated im MBH. Even if...
  12. Konrad

    Thickness of tubes Sec IV HG-301.2 and HF-204.3

    I'm using stainless austenitic tubes welded to stainless tubesheet in a small hot water heater. Does HF-204.3 exempt from HG-301.2(b) 1.5mm minimum thickness? Thanks Konrad

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