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  • Users: prasit
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  1. prasit

    Help with European material please

    Hi Experts, I have a little confuse with european material. Myself is just working with BS EN standard but the data I have is based DIN standard. The specified material is HII DIN 17175(1.0425). The question is "is number 1.0425 the same for all european material?" Can I apply this material...
  2. prasit

    API 620 nozzle and external pressure design

    Hi experts, Please anyone suggest me about API620, as I am quite new for this code. 1. How can I calculate nozzle neck thickness? According to the code, it specifies only min. thk of the neck but nowhere indicate the calculation method. 2. If the tank is subjected to partial vacuum, How can...
  3. prasit

    API 620 nozzle neck cal. and external pressure cal.

    Hi experts, Please anyone suggest me about API620, as I am quite new for this code. 1. How can I calculate nozzle neck thickness? According to the code, it specifies only min. thk of the neck but nowhere indicate the calculation method. 2. If the tank is subjected to partial vacuum, How can...
  4. prasit

    hydrostatic test pressure

    Dear all I design a vessel using PVElite and feel like there is something not right. In Hydrostatic stress calculation, the test pressure shall be calculated from 1.3*MAWP*stress ratio according to UG-99b. In my case, a nozzle MAWP = 492 kPa while shell MAWP = 783 kPa and ellip head MAWP = 786...
  5. prasit

    External pressure chart for unassigned material

    Hi Have anyone experienced designing an ASME vessel with unassigned material against external pressure? I am wandering which external pressure chart shall be used for unassigned material, especially LDX 2101. Please suggest.

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