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  1. NDTjoe

    Nominal thickness off U-1A vs actual supplied material thickness

    Our NDT Technicians measured via UT the thickness of an in-service vessel shell wall to be around 0.350" thick. The U-1A lists the Nominal Thickness as 0.250". I calculated the min required wall thickness per ASME BPVC Section VIII para UG-27 to be 0.158". [ri=17.75", P=150 psi, S=20ksi...

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