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  • Users: Steve.sw90
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  1. Steve.sw90

    Using Standard B16.9 Concentric reducer for a vertical stripper.

    Dear all, I am working on a produced water stripper, which has bottom shell diameter as NPS 18" with length of 1250mm and Balance stripper is NPS 12" in dia. Hence we have to use a conical transition from 18" to 12", I wanted to check with you guys if anyone have ever used standard B16.9 conical...
  2. Steve.sw90

    Nozzle MDMT calculation (Neck pipe thickness)

    Whle doing the calculation for nozzle MDMT as per UCS-66(a), Assuming that we have a nozzle with Pipe, flange and RF pad, While concluding to value of MDMT what shall we consider the thickness of pipe, Nominal or reduced thickness(considering 12.5% under tolerance). Definition of governing...
  3. Steve.sw90

    Use of original bolts for hydrotest

    Dear all, Good morning. As per U1 (e) (3)even bolts for manways and handholes fall under scope of ASME section VIII Div.I. We are buying standard ASME bolts, since these are standard items do we have to use original bolts for hydrotest. If not please give code reference or interpretation...
  4. Steve.sw90

    Instrument Nozzle flange rating

    Dear all, Our client is asking for 300# flanges for instrument connections on vessel, on which all process connections are of 150#. What is the technical reason behind this? I checked with few people they say this is to prevent inventory issues. This response couldn't satisfy me because on...
  5. Steve.sw90

    ASME B16.5 Flange with partiton plate for exchangers

    Dear All, I have been using ASME B16.5 flange for exchangers with or without partition plate. Recently i have come across TEMA RCB-11.7, which provides guidance to modification of WM1 and WM2 which are bolt load for operating condition an d gasket seating. I went through various posts which is...
  6. Steve.sw90

    Support ring for Packing inside vertical vessel

    I need to design a ring supporting packing inside a vertical vessel, I have started with Roark's formula for stress and strain but confused which case i should consider. I would like to know if there is any other approach.
  7. Steve.sw90

    SA-182F316L low stress material

    While designing a kettle type heat exchanger, I am having a confusion if I should use low stress material for body body flange and tube sheet. Also which are the scenario where low stress material should be used, I have read note G5, still having a curiosity to know in actual industry where low...
  8. Steve.sw90

    Flange Rating for SS316 and SS316L

    For coded vessel can i use SA-182 F316 for design calculation and SA-182 F316L for other documentation. does code restrict from doing as mentioned above, please provide refference
  9. Steve.sw90

    Double Gasket flange connection

    Dear all, I have designed a non standard flange based on appendix-2, but i have a concern related to flange connection, there is a support plate for distributor in between two flanges, both the sides of plate have surface finish of 3.2 to 3.6 microns suitable for seating gasket, hence there will...

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