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  1. USP4

    Nozzle load Basics

    Thank you @RVAmeche and @Krausen for response. Could you be able to provide example of forces that will be applied to nozzle. In uploaded image there is duct (having pressure less that 15 psig inside it). The flange of that is connected to gas pipe (that too have pressure less that 15psig)and...
  2. USP4

    Nozzle load Basics

    Hello dear members, could you please help providing material, links or explanation about why we need Nozzle loads and how they are generated? I already Googled it, but would it be beneficial if subject matter experts or experienced members can share the details.
  3. USP4

    MAWP question

    Thank you all for kind information, really appreciate. Further to question related to MAWP, if plant guys decide to go with MAWP pressure of vessel, which will be higher than Design pressure, does the vessel needs to be recalculated for stresses generating from combined loading such as wind etc...
  4. USP4

    MAWP question

    Thank you @Some Curious Guy for detail explanation. An auxiliary question to get better understanding of my primary question, as follows: Lets say we have 23 kg/cm2 as design pressure and MAWP is 28 kg/cm2 in hot and corroded condition (head governing). If someone in plant wants to change...
  5. USP4

    MAWP question

    Hello dear members, Could you help me with following questions: - Does MAWP is usually governed by shell or head but not flange? Will it not be flange governing the MAWP? Correct me if I am wrong,the reason for MAWP governed by flange is that if in future the plant personnel decide to change...
  6. USP4

    When to consider Fatigue analysis

    Thank you for kind information.
  7. USP4

    When to consider Fatigue analysis

    Hello dear members, Could you be able to guide me when to consider fatigue analysis? I mean the pressure vessel might be undergoing some cyclic loading, but how many cycles will required to be considered for analysis? Does Div 1 has that guideline?

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