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  1. petroPV

    vessel in occean

    jharris3, I strongly agree with you that a monkey with a tool is still just a monkey. I appreciate your valuable advise. Can anyone pls share your experience of using COMPRESS to design fatigue vessel? THX, PetroPV
  2. petroPV

    vessel in occean

    I have a gas processing unit mounted on a giant ship. The vertical vessels (100' tall, 12' Dia) mounted on modular epxperiences waving angles with ocean waves. This vessel is filled with half liquid. Question: 1. How can supplier design this vessel per Div. 1? 2. Is this vessel to be considered...
  3. petroPV

    Normalized elipse Head

    Vesselfab, I was told plate over 1.5" shall be normalized per 5.2 of SA-516/SA-516M in Sec II-D.
  4. petroPV

    Normalized elipse Head

    I always thought there are several material engineers in this forum. Maybe I remember wrong.
  5. petroPV

    Normalized elipse Head

    Vesselfab, since they would have hard time to get non-normalized plate with 2" norminal thickness of SA 516-70.
  6. petroPV

    Normalized elipse Head

    For fatigue service reason, we call out vessel material to be normalized SA 516-70, and elipse heads (min thickness 2") get to be hot formed. The vessel fabricator proposes to use normalized plates to hot form the elipse heads and normalize the heads after. My concern is if the mechanical...
  7. petroPV

    Normalized elipse Head

    r6155, It's clear that elipse heads need to be normalized. Vessel fabricator is to use normalized plate to cold form the elipse head and thereafter normalize the head again. My concern is that if twice normalizations cause negative impacts to material mechanical properties. I will feel much...
  8. petroPV

    Normalized elipse Head

    Thanks, James. I expected MTR from mill includes normalization simulation test results (2 cycles min), not from head former. I know most mills provide PWHT simulation test results, but not sure if majority mills provide normalization simulation test. My understanding is that multiple...
  9. petroPV

    Normalized elipse Head

    Jamesl, The MTR actually is provided by mill without normalization simulation test, not by head former. As i said, I like to see normalization test results of two cycles simulation since head material actually experiences twice normalization.
  10. petroPV

    Looking for 1950 API-ASME Code Allowable Stress

    Can anyone advise where 775°F limitation is listed in VIII? Thanks
  11. petroPV

    Normalized elipse Head

    For fatigue service reason, we call out vessel material to be normalized SA 516-70, and elipse heads (min thickness 2") get to be hot formed. The vessel fabricator proposes to use normalized plates to hot form the elipse heads and normalize the heads after. My concern is if the mechanical...
  12. petroPV

    Looking for 1950 API-ASME Code Allowable Stress

    is 775°F iimitation in VIII?

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