Shell Thickness Calculation under External Pressure in Pressure Vessels

Shell Thickness Calculation under External Pressure in Pressure Vessels

Overview
A. Reference:
- ASME Section VIII Division 1 Paragraph UG-28, Figure UG-28, Figure UG-28.1
- ASME Section II Part D Subpart 3, Figure G, Applicable chart, Table 1A, Table Y-1

B. Application: Vacuum condition, tube, others

C. Symbol and Definition of external pressure calculation in the shell: Factor A, Factor B

D. Minimum Required Data: Design external pressure, Design external temperature, Outside diameter, Length of the shell, Material type

E. Step by step calculation
1. Assume t, Calculate L/Do, Do/t
2. Define L/Do
3. Define factor A
4. Define applicable figure and E
5. Define factor B
6. Define Pa using factor B
7. Define Pa using factor A
8. Iterate t until Pa greater than P

F. Study cases: 1.5 MPa, 200 deg C, Do 500 mm, L 1000 mm, Material SA 516 Gr.70


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List of Playlist:
- Full Video (First Edition) :    • Full Video (First Edition)  
- Pressure Vessel Basic Design :    • Pressure Vessel Basic Design  
- Pressure Vessels Series :    • Pressure Vessels Series  
- Shell and Tube Heat Exchangers :    • Shell and Tube Heat Exchangers  
- ASME B31.3 :    • ASME B31.3  
- Design of Material :    • Design of Material  
- Shell Calculation :    • Shell Calculation  
- External Pressure Design Calculation :    • External Pressure Design Calculation  
- Thickness Calculation :    • Thickness Calculation  
- Welded Joints, Radiograhy, Joint Efficiencies :    • Welded Joints, Radiography, Joint Eff...  
- Type of Pressure Design Calculation :    • Types of Pressures Design Calculation  
- Nozzles, Reinforcement, Flanges, and Fittings :    • Nozzles, Reinforcement, Flanges, and ...  
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