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  1. P

    B31.4 Weld Inspection "Per Day" requirement

    Hello everyone, Wondered if anyone had any experience with this: B31.4 2016 Para. 434.8.5.3 states that above a hoop stress of 20% of yield, a minimum of 10% of girth welds "completed each day" are to be inspected. What does this mean for large pipes where one girth weld takes most or all of...
  2. P

    Nozzle rotation and flexibility for nozzle with internal piping

    Hello, I have an API-650 tank, with two 24" nozzles. One nozzle has internal piping going back to the center of the tank, the other has none. The internal piping would be supported about every 20' with goalpost type supports (no hold-downs). I am trying to determine what effect the internal...
  3. P

    FEA on pipe flange below MDMT

    We have some existing A105N, B16.5 flanges that have not been impact tested. New upset conditions would be -48C at nearly atmospheric pressure for 15-30 minutes. Most of the time it will be at ambient. We have done pipe stress analysis and checked flange leakage, both are fine based on...

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