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  • Users: dskjockey1
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  1. dskjockey1

    Heat Exchanger Tubes

    Does anyone have a suggestion on how to simulate tubes when analyzing a tube sheet on a shell and tube TEMA type heat exchanger? I would rather not model each tube individually. I have thought of adding a hinge restraint to each tube hole but I am not sure that would simulate tubes properly on a...
  2. dskjockey1

    Pressure Vessel Nozzle w/ Moments

    I am new to using simulation and trying to analyze a nozzle in a 2:1 head configuration. The end of the nozzle is subjected to various forces and moments due to piping. There is no issues with modeling the forces but I am not sure how to apply the moments. Currently I have treated them as...
  3. dskjockey1

    UG-101 Proof Test

    Does a proof tested part per UG-101 ever expire in the eyes of the ASME Code? Does it ever expire for Alberta CRN registration? This would be a proof tested cover of a heat exchanger. Thanks!
  4. dskjockey1

    ANSI/ASME Flanges

    Can I machine off the RF of a standard ANSI B16.5 flange without affecting the pressure rating of that flange? How about machining off 1/3 of the RF height? Thanks!
  5. dskjockey1

    Appendix 2 and Multi Chamber Vessels

    If I have a heat exchanger with a tubesheet sandwiched between two body flanges (one flange subjected to 100 psig shell side design conditions, one flange subjected to 800 psig tube side design conditions). Does Appendix 2 require me to design both body flanges to the worse case Wm1 and Wm2 of...
  6. dskjockey1

    Interpretation: VIII-1-89-227

    According to this interpretation if I have smls pipe and a bolted joint at each end welded to the shell with a full penetration corner joint a JE = 1 is permitted. What if my weld attachments on both ends are loose type flanges (slip on flange / double fillet)? Can I still use a circumferential...
  7. dskjockey1

    Joint Efficiencies for Nozzles

    UW-11(a)(2) states that radiography is not required for Cat B and C butt welds in communicating chambers that do not exceed 10 NPS. If I have a vessel with Full Per Code RT and nozzles which are 6"-RFWN nozzles, can I take credit for a JE = 1 in my calculations for these nozzles even though...
  8. dskjockey1

    Spot RT and ERW Pipe

    This has probably been asked before but. If I perform spot RT on a circumferential joints of ERW (SA-53B) pipe is my longitudinal JE = 1 or .85? Thanks!

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