Available nozzle wall thickness new, tn = 0.875*0.688 = 0.602 inThe nozzle neck thickness is adequate.External Pressure, (Corroded & at 450 F) UG-28(c)L / Do = 16.9932 / 12.75 = 1.3328Do / t = 12.75 / 0.0506 = 252.0895From table G: A = 0.000246From tableCS-2:

B = 3,317.7143 psiPa = 4*B / (3*(Do / t))= 4*3,317.71 / (3*(12.75 / 0.0506)) Available nozzle wall thickness new, tn = 0.875*0.688 = 0.602 inThe nozzle neck thickness is adequate.External Pressure, (Corroded & at 450 F) UG-28(c)L / Do = 16.9932 / 12.75 = 1.3328Do / t = 12.75 / 0.0506 = 252.0895From table G: A = 0.000246From tableCS-2: B = 3,317.7143 psiPa = 4*B / (3*(Do / t))= 4*3,317.71 / (3*(12.75 / 0.0506))= 17.55 psiDesign thickness for external pressure Pa = 17.55 psita = t + Corrosion = 0.0506 + 0.125 = 0.1756"50/262VENT (V)ASME Section VIII Division 1, 2013 EditionNote: round inside edges per UG-76(c)Location and OrientationLocated on Top HeadOrientation 0End of nozzle to datum line 212"Calculated as hillside YesDistance to head center, R 20"Passes through a Category A joint NoNozzleDescription NPS 6 (Thk = 0.375")Access opening NoMaterial specification SA-106 B Smls pipe (II-D p. 14, ln. 19)Inside diameter, new 5.875"Nominal wall thickness 0.375"Corrosion allowance 0.125"Opening chord length 7.9106"Projection available outside vessel, Lpr 5.4138"Projection available outside vessel to flange face, Lf 8.9138"Local vessel minimum thickness 0.4375"Liquid static head included 0 psiLongitudinal joint efficiency 1Reinforcing PadMaterial specification SA-516 70 (II-D p. 22, ln. 6)51/262Diameter, Dp 11.4603"Thickness, te 0.4375"Is split NoWeldsInner Fillet, Leg41 0.5"Outer Fillet, Leg42 0.325"Nozzle to vessel groove weld 0.375"Pad groove weld 0.375"ASME B16.5-2009 FlangeDescription NPS 6 Class 150 WN A105Bolt MaterialSA-193 B7 Bolt