Nozzle Size : 11.75 in ASME Section VIII Index L-7.2 Example 2 LATERInputs InputsUG-45 b(1) for Internal Pressure UG-45 b(2) for External Pressure
Internal Design Pressure P 400.00 psi External Design Pressure P 15.00 psiDiameter of Shell/Head D 60.00 in Diameter of Shell/Head D 60.00 inDesign Temperature Temp 250.00 F Design Temperature Temp 250.00 FAllowable Stress of Shell S 14300.00 psi Allowable Stress of Shell S 14300.00 psiJoint Efficiency E 1.00 Joint Efficiency E 1.00Corrosion Allowance CA 0.00 in Corrosion Allowance CA 0.00 in
Formula used Formula used
Result ResultThickness t 0.8535 in Thickness t 0.0315 in
Inputs InputsUG-16(b) UG-45 b(4)
Minimum thickness t 1/16 in Standard Wall Thk of pipe t 9.57 mmMinimum thickness t 1.59 mm Minimum thickness t 8.3738 mmCorrosion Allowance CA 3.00 mm Corrosion Allowance CA 0.00 mm
Result Thickness t 4.5875 mm Result Thickness t 8.3738 mmThickness t 0.1806 in Thickness t 0.3297 in
THICKNESS OF NOZZLE AS PER UG-45
)6.0(2 PSEPDt−
= )6.0(2 PSEPDt−
=
Thickness t 0.1806 in Thickness t 0.3297 in
Final Result InputsUG-45 a for Internal Pressure
Step 1: Max ( UG 45b(1) , UG 16b) t 0.8535 mmInternal Design Pressure P 400.00 psi
Step 2: Max ( UG 45b(2) , UG 16b) t 0.1806 mm Diameter of Pipe D 11.75 inDesign Temperature Temp 250.00 F
Step 3: Max ( Step1 , Step 2) t 0.8535 mm Allowable Stress S 16600.00 psiJoint Efficiency E 1.00
Step 4: Min ( Step3 , UG-45 b(4)) t 0.3297 mm Corrosion Allowance CA 0.00 in
Step 5: Max ( Step4 , UG-45 (a)) t 0.3297 mm Formula used
Resultt 0.3297 mm Thickness t 0.14 in
Actual Thickness of Pipe = Pipe Schedule Thickness x 0.875 (12.5% Undertolerance )
Actual Thickness of Pipe should be greater than Minimum Required Thickness
Min Required thickness of Nozzle
Sch
)6.0(2 PSEPDt−
=