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  • Users: Afox88
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  1. Afox88

    SA-387 9 Chrome Plate

    Hi Guys, I am designing a unit to ASME Section VIII-1 that is 9 Cr-Mo. I found all the other forms in Section II-D but the stress values are not there for plate. I checked in Section II-A under SA-387 and I did find grade 9 so it is an approved material. Any thoughts or ideas how I am to...
  2. Afox88

    Hogged Out Dished Cover

    I am trying to design a dished cover in compress out of a hogged out forging. Does anyone have a suggestion as to best model this configuration, since there is no strict hog out option in compress. Please advise,
  3. Afox88

    PWHT for Tube-Tubesheet Joint

    Hi Guys, We are quoting a replacement tube bundle for a high pressure steam generator (BKU), whose service clearly falls under UW-2(C) for unfired steam boilers. This bundle was already replaced once in 2014, and the tube-tubesheet joint at that time was strength welded but PWHT was not...
  4. Afox88

    Replacing a 5Cr Pass Partition

    To start, this is for an ASME Section VIII-1 heat exchanger. I am having a debate with some of the others in my office and was wondering if people here have any opinion. I am replacing a damaged pass partition on a 5 Cr channel. When we remove the existing pass partition, we will not cut all...
  5. Afox88

    Impact Tested Weld Procedure

    Hi guys, We are having an argument with our ASME inspector and wanted to run the situation by you. We are designing a Section VIII-1 heat exchanger. It is a BEM with a CS shell (SA-516 70 impact tested to -50F) and SS304 tubesheet. The mdmt is -50F for the shellside and -110F for the tubeside...
  6. Afox88

    High Temperature Application

    Guys, I am designing a Section VIII-1 heat exchanger with design conditions 1058°F at 80 psig. I am using SS321H. While I do have all the stress values for SS321H at this temperature from Section II-D, Section II-D does not provide yield stresses for any materials over 1000F, which is causing...
  7. Afox88

    Tube to Tubesheet Weld Procedure Qualification

    Guys, I am following up on this previous post: http://www.eng-tips.com/viewthread.cfm?qid=291961 Just to clarify, if we are welding a Section VIII division 1 heat exchanger that has a tube to tubesheet strength weld (partial or full), we do not need to qualify the procedure using a mock...
  8. Afox88

    Rolling AL6XN Tubes into SS316 tubesheet

    Hi Guys, I have a customer asking us to roll AL6XN tubes into a SS316 tubesheet. I am obviously suggesting that they go with the AL6XN tubesheets as well, but I am not familiar enough with AL6XN to know if it is even possible to roll AL6XN tubes into a SS316 tubesheet. I know that some...
  9. Afox88

    Vapor Distribution Belts

    Does compress handle vapor distribution belts for a heat exchanger or do I have to model it as a separate vessel? I did not see the option. Please advise,
  10. Afox88

    Pass Partitions with ANSI B16.5 flanges (for Section VIII-1 heat exchangers)

    I have been advised by my mechanical engineer that ANSI B16.5 flanges are generally not used for multi-pass heat exchangers as they would not pass Code calculations. After searching through the CODE Book, TEMA and ANSI B16.5, I did not find any reference to dispute or agree with this. I did not...
  11. Afox88

    UW-2(c) ERW Question

    Hi, I am working on a shell and tube design for ASME VIII-1, and my unfired steam boiler falls under UW-2(c). Specifically, my question is with the first part of UW-2(c)(2) which I transcribed below: UW-2(c)(2): All butt welded joints shall be fully radiographed except under the provisions of...

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