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  1. Encho

    EPRV for API 650 Tank

    Hi, I am sizing the Emergency Pressure Relieve Valve for an API 650 Tank. It does not have internal pressure so the MAWP is limited to the basic calc of roof weight/cross sectional area of the tank which results in MAWP=1.96 inWC. I have already sized the set for the PVRV in 1 inWC. When I...
  2. Encho

    API-650 Frangible roof

    Hi everybody, When I am determining the frangible roof area (A), I use the formula in 5.10.2.6. Checking the roof to top angle compression ring. It is limited to details a-e in fig. F-2. Based on these details, I can determine the participating area for the shell (As) and the participating...
  3. Encho

    API650 Frangible Joint

    Hi everybody My question is the next one: Is it true that frangible joint is only use for tanks in which internal pressure doesn´t exceed the weigth of the roof? I am asking because I am about to design a tank with working pressure= 8 in H2O. About this pressure, what should be the design...
  4. Encho

    API650 Appendix G

    Hi everybody, I am just working on the appendix G and I got a doubt, what is the criteria for frame members dimensions design? Thanks,
  5. Encho

    MAWP for nozzles

    Dear all, In the compress report specifically in pressure summary. The MAWP for the nozzles depends of what? I am asking because I think the MAWP should be given by the ASME B16.5 and I am doing a vessel in which the report indicates a MAWP lower than given for ASME B16.5 at the indicated...

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