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  1. mmikola

    API 650 Tank - Stiffeners Shell for Fluid Pressure

    First of all I want to thank you all for you opinions offered here. I have spoken with an API 653 inspector and he told me that he has seen tanks in the south using the stiffening bands as I have discribed. I realize that the API 650 does not have a design nor speak of stiffening bands used to...
  2. mmikola

    API 650 Tank - Stiffeners Shell for Fluid Pressure

    Joe Tank, I know that API does not approve the tank, I just want to know if they approve of the method. Also, the shell thicknesses are adequate if stiffening bands are utilized. My client basically wants that warm and fuzzy feeling then when he signs his name to certify the tank is built...
  3. mmikola

    API 650 Tank - Stiffeners Shell for Fluid Pressure

    I am looking statements either in the code or otherwise, from API, stating that it is acceptable to use stiffening bands and that the method I described above is acceptable by the API. API 650, section 3.6.5 states that an elastic analysis can be performed in the selection of the shell...
  4. mmikola

    API 650 Tank - Stiffeners Shell for Fluid Pressure

    I was brought into the design of a tank after a client ordered and began the erection of an ethanol processing tank. After running the numbers we realized the tank was not only build, but the shell thickness was to thin. My question: Is it acceptable by API 650 to provide stiffeners to a...
  5. mmikola

    Pressure relieving devices/overflow slots in an API 650 tank

    Yes, however, Appendix H can only be used for a tank with a fixed roof and a floating internal roof. These process tanks do not have a floating roof and need to be sized per API 2000 venting requirements. So...I should used the Bernoulli Equation for this then once I determine the in and...
  6. mmikola

    Pressure relieving devices/overflow slots in an API 650 tank

    Could you give me direction on where to go for sizing the venting and overflow slots on an API 650 process tank used in ethanol production? I used API 2000 to find the inbreathing, outbreathing and emergency venting requirements and I know the pump-in of the tank so I just need to know how to...

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