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  1. NKBeresford

    ASME B31.3 Calculating Hydrostatic Test Pressure

    Carbon Steel system 165 psig 150°F Normal Fluid Service Is the hydrostatic test pressure 247.5 psig or 255 psig? I have always calculated the hydrostatic test pressure in accordance with Equation 24 and used the allowable stresses of the pipe material (A106 Gr. B). Is this correct...
  2. NKBeresford

    Hydrostatic TP exceeds B16.5 flange rating

    I have an Alloy 825 pipe system - DT= 654°F; DP = 2820psig. TP = 1.5*(2820)*(23.3/17.484) rounded up to next 25 psig increment or 5650 psig. ASME B16.5 Class 1500 flange rating @ 100°F equals 3750psig. (Table F2-3.8) Per Para 2.6 - I can system test these flanges to 1.5*3750 = 5625psig...

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