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  1. GinBread

    Warping of Tubesheets and Flanges

    Good stuff, thank you r6155 and NRP99
  2. GinBread

    Warping of Tubesheets and Flanges

    Is it better to use the same material or a material with a higher heat transfer coefficient? The previous company I worked for had something very similar to this except that it was made of solid aluminum. Feel free to point me towards some literature instead of just straight up giving me an...
  3. GinBread

    Carbon steel Plate 516 Gr 70N

    Another good specification to look at when you have questions such as this is SA-941. This spec lists out definitions for a lot of commonly used terminology all throughout Section II, and definitions for both of these terms "normalize" and "stress relieving" are in there.
  4. GinBread

    Warping of Tubesheets and Flanges

    At my previous company, we saw it with the worst effects in diameters exceeding 12 NPS, where the tubesheets were anywhere from 3/4" to 1" thick. Amazingly, we did a vessel that was around 30" diameter and tubesheets that were closer to 2" thick... and they managed to warp the tubesheets by at...
  5. GinBread

    Warping of Tubesheets and Flanges

    I've been doing engineering design of ASME Sec VIII pressure vessels for about 7-8 years now and I've noticed a recurring topic over all these years that I'm having trouble finding in depth literature or discussions about. As the title suggests, I am looking for any and all information...
  6. GinBread

    UG-34 Sketches (j) and (k)

    SnTMan, I was able to find an interpretation (BPV VIII-1-19-13) that confirms exactly what we've discussed. Thank you for sharing this link as well, I had no idea ASME had a free searchable database of interpretations. Every company I've been to so far has made no mention of it and has directed...
  7. GinBread

    UG-34 Sketches (j) and (k)

    SnTMan, Thanks for the reply. Do you happen to know why ASME doesn't add to the definition of "d" that for these two sketches it is equal to "G" from Appendix 2? It could help to further clarify for some. Perhaps this is a question that has never been posed to them before? r6155, #2 above is...
  8. GinBread

    UG-34 Sketches (j) and (k)

    Hello, I have a question about how to interpret "d" which is defined as "diameter, or short span, measured as indicated in Figure UG-34" in relation to the two sketches (j and k) in the subject. I've heard it a couple of different ways: 1) It appears that the line for d goes to the outer...
  9. GinBread

    UCS-67(a)(1) Requirement

    This is a little bit of an aside from the original topic, but why would you order SA-105N impact tested? The following materials come impact tested to a specified temperature already, are chemically/mechanically almost equivalent to what you have currently, and may be cheaper than ordering a...
  10. GinBread

    Heat Exchanger Heads Design

    It's sometimes helpful to peruse websites of companies that produce something similar to what you're designing, just to get a general idea on what direction they went in. Obviously, you will be missing a few pieces of the puzzle that caused them to arrive at their final design. Here is one such...
  11. GinBread

    Rated MDMT

    As David said, UCS-66 has the bulk of the information you will need. See also UG-20. If you are lucky, your customer might also allow you to use UG-20(f).
  12. GinBread

    UCS-67

    You may run into customers that don't care about UCS exemptions and they will tell you that you must impact test, regardless. Like others have said, ASME is just the bare minimum requirements. Doing extra work isn't necessarily a bad thing, per se. Is there enough cost wrapped up in the...
  13. GinBread

    Looking for supplier that can offer these O-rings.

    80 duro EDPM, from what I've seen, is pretty standard. You shouldn't have many issues tracking this down. McMaster-Carr is a great starting point, but sometimes not the best ending point. They are a middle man, and you might find better deals buying elsewhere once you have a better idea of...
  14. GinBread

    ASME PTB-4-2021

    I like the way you think.
  15. GinBread

    ASME PTB-4-2021

    I am looking to build up a list of personal reference books/documents that I can maintain if / when I move from one company to another. I have several books in mind that I will probably get, but this one I'm struggling to justify due to the cost. I've been working for pressure vessel companies...

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