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  1. Mechanical1991

    Interferences between nozzles

    I have an older pressure vessel which does not show an ASME stamp and there isn't an U1A form. Now we are thinking of reconditioning it and extending its time life according to NBIC. In this vessel there are 2 very close nozzles of 18” and 1” (without reinforcement Repad). When I try to validate...
  2. Mechanical1991

    SA-105 Material_ MDMT -20°F

    Hi all, I have a question about SA-105 material According to ASME VIII Div 1 2019, the SA-105 material belongs to Curve A (before it belonged to curve B), which does not reach up to -20°F MDMT. Can I apply Figure UCS-66.1 to reduce the temperature to reach MDMT -20°F? Thanks for your comments
  3. Mechanical1991

    SA-105 Flange_MDMT -20°F

    Hi all, I have a question about SA-105 material According to ASME VIII Div 1 2019, the SA-105 material belongs to Curve A (before it belonged to curve B), which does not reach up to -20°F MDMT. Can I apply Figure UCS-66.1 to reduce the temperature to reach MDMT -20°F? Thanks for your comments
  4. Mechanical1991

    Base plate replacement of a Pressure Vessel

    Hello all, We have a corrosion problem with the baseplates of a horizontal pressure vessel (ASME stamp) and we need to replace those baseplates. I have the follow question: Is this work a REPAIR according NBIC? NOte:This work will not affect any pressure retaining element. Thanks for your...

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