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  1. Vijay93

    Inventor Natran MAWP of storage tank shell

    "Ah.... You have an old existing tank and are doing a reevaluation of a relief device installation ... Is that correct" yes that is correct.
  2. Vijay93

    Inventor Natran MAWP of storage tank shell

    Hello, Please find here an image of the tank under study.https://files.engineering.com/getfile.aspx?folder=c34d6fa4-f831-40a0-98c6-e61b85bd586d&file=image_2022_03_16T14_06_44_423Z.png
  3. Vijay93

    Inventor Natran MAWP of storage tank shell

    Thank you for the response. So to check for compliance of internal pressure with API 650, it is best to follow the steps mentioned in API 650 appendix F and E? The maximum pressures as defined by the formulae in the appendix would give us better results than FEM? design external pressure shall...
  4. Vijay93

    Inventor Natran MAWP of storage tank shell

    Hello, Thank you for your response. We are trying to analyse an existing tank based on API 650 - Appendix F. But we are trying to check with NASTRAN the MAWP to show the client a simulation result.
  5. Vijay93

    Inventor Natran MAWP of storage tank shell

    Hello, We have a shell component with a shell thickness of 5mm. We are trying to do a buckling analysis. We have constraints placed on the bottom. 50mbar is the input pressure and the self-weight of the roof is 1000kg. the result we got, out of the 8 nodes, we got the highest eigenvalue of...
  6. Vijay93

    Maximum velocity of diesel in pipe API

    Good evening, I am currently working on a project where I have to dimension pipes based on the maximum velocity of diesel in the pipe as defined by API. Can someone please tell me which API standard defines the velocity of fluids in a pipe? Thank you.
  7. Vijay93

    Maximum velocity of water and foam mixture in pipes

    Thank you all for your answers. I believe NFPA does not set a limit to maximum velocity but as mentioned EN 12845 sets the limit to 10m/s in pipes and 6m/s through valves, flow meters and strainers as mentioned by @HateMech
  8. Vijay93

    Maximum velocity of water and foam mixture in pipes

    HI,´ I am currently trying to hydraulically dimension pipes. I would like to know what is the maximum velocity to be used to determine the pipe sizes. 1 pipe has only water and the other has water and foam mixture (3% AFFF Foam). The application is Fire fighting. Thank you for your help in...

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