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  1. D

    Steel-to-Steel Fastening with total thickness greater than 1/2"

    Oh, please do not use screws.
  2. D

    MDMT calculation

    See Fig. UCS-66.3 (e) to start.
  3. D

    Can Service Pressure Exceed Design Pressure?

    Try starting with the definition of MAWP in APP. 3.
  4. D

    Welding to Section VIII Div 1. Butt welds only?

    There are rules for both in certain circumstances. Nozzles may be attached by fillet welds only following Code rules.
  5. D

    nozzle-head PWHT

    UW-40 Is telling you that you need to take into account either the thickness of the nozzle (set on), thickness of the shell or head (set thru), thickness of the repad (if applicable), thickness of the fillet welds (throat dimension). The greatest thickness being the governing thickness. In your...
  6. D

    B31.3 (2024) fig. 323.2.2-1 note 1 min temp of blinds/blanks w/o impact testing

    That is correct. Total thickness / 4 is the governing thickness. Sec. VIII Div 1 is the same.
  7. D

    ASME VIII-1 Nozzle Spacing Clash

    You can't just ignore the warning....UG-42 is there for a reason.
  8. D

    Weld on a UL tank

    Is this a shell joint? If so which No. of figure 6.1 did they use? Then ask if there weld looks like the weld indicated in the figure.
  9. D

    Hardfacing overlay welding - Procedure qualification

    Correct.
  10. D

    Minimum requirements mechanical testing of SA105 forgings

    ASME Sec. II Part A
  11. D

    Hardfacing overlay welding - Procedure qualification

    See Table QW-255.1 and subsequently QW-404.12 for the first question.
  12. D

    Help finding a heat resistant, non-conductive, and pressure tolerant material

    Belzona
  13. D

    Designing Blind Flange in PV Elite 26

    I don't use PV Elite, but looking at your snip, you are designing per ligaments (UG-53).
  14. D

    ASTM A403 Fittings - W vs. WX vs. WU

    Correct. I'd be lying if I said I knew for sure, but the starting materials are made to a specification as well, such as SA-312 which have there own requirements for example, hydrotesting/Eddy Current.
  15. D

    ASTM A403 Fittings - W vs. WX vs. WU

    As an addition, your client is requesting welds be RT or UT no matter if there is filler metal or not. W is only RT of filler metal welds and fitting manufacturer welds. WX/WU is all welds, filler metal or not. (5.5 and 5.6)
  16. D

    ASTM A403 Fittings - W vs. WX vs. WU

    Yes You answered this...5.1 5.4.2 If you don't meet 5.4.3.2 or 5.4.3.3 RT is required. Table 6 may clear things up for you.
  17. D

    Opening on Blind Flange

    Correct. Opening size and spacing limits of UG-36 apply or use UG-39 for reinforcement.
  18. D

    Ring Type Flange from Rolled Strip

    The answer to your question is simple..... Yes. Why they would want to is harder to decipher. Way easier to roll 75mm vs 140mm.
  19. D

    Opening on Blind Flange

    The Code allows B16.5 flanges to be used at the pressure/temp ratings of those standards without additional calculations. B16.5 allows reducing flanges. Multiple openings do not meet B16.5 and therefore cannot be used as such. Therefore, UG-34 is required.
  20. D

    Opening on Blind Flange

    It's telling you exactly what I said...it's no longer a blind flange. Even though the openings are exempt from reinforcement it needs to be calculated per UG-34. You can't use the pressure/temp ratings of B16.5 or B16.47.

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