ASME VIII Div. 1
Paragraphs supported by NextGen for the design and verification of pressure vessels according to ASME Section VIII Division 1.
Subsection A - General Requirements
| Paragraph |
Description |
| UG-16 |
General |
| UG-27 |
Thickness of Shells Under Internal Pressure |
| UG-28 |
Thickness of Shells and Tubes Under External Pressure |
| UG-29 |
Stiffening Rings for Cylindrical Shells Under External Pressure |
| UG-30 |
Attachment of Stiffening Rings |
| UG-31 |
Tubes, and Pipe When Used as Tubes or Shells |
| UG-32 |
Formed Heads, and Sections, Pressure on Concave Side |
| UG-33 |
Formed Heads, Pressure on Convex Side |
| UG-34 |
Unstayed Flat Heads and Covers |
| UG-36 |
Openings in Pressure Vessels |
| UG-37 |
Reinforcement Required for Openings in Shells and Formed Heads |
| UG-38 |
Flued Openings in Shells and Formed Heads |
| UG-39 |
Reinforcement Required for Openings in Flat Heads and Covers |
| UG-40 |
Limits of Reinforcement |
| UG-41 |
Strength of Reinforcement |
| UG-42 |
Reinforcement of Multiple Openings |
| UG-43 |
Methods of Attachment of Pipe and Nozzle Necks to Vessel Walls |
| UG-44 |
Flanges and Pipe Fittings |
| UG-45 |
Nozzle Neck Thickness |
| UG-46 |
Inspection Openings |
| UG-47 |
Braced and Stayed Surfaces |
| UG-48 |
Staybolts |
| UG-49 |
Location of Staybolts |
| UG-50 |
Dimensions of Staybolts |
| UG-53 |
Ligaments |
| UG-54 |
Supports |
| UG-79 |
Forming Pressure Parts |
| UG-99 |
Standard Hydrostatic Test |
| UG-100 |
Pneumatic Test |
Subsection B - Requirements for Fabrication by Welding
| Paragraph |
Description |
| UW-9 |
Design of Welded Joints |
| UW-13 |
Attachment Details |
| UW-16 |
Minimum Requirements for Attachment Welds at Openings |
| UW-19 |
Welded Stayed Construction |
| UW-20 |
Tube-to-Tubesheet Joint Strength |
Subsection C - Requirements for Classes of Materials
| Paragraph |
Description |
| UCS-23 |
Maximum Allowable Stress Values |
| UCS-68 |
Low Temperature Service Requirements |
| UNF-23 |
Maximum Allowable Stress Values |
| UNF-65 |
Low Temperature Operation |
| UHA-23 |
Maximum Allowable Stress Values |
| UHA-51 |
Impact Tests |
Subsection D and Appendices
| Part / Appendix |
Description |
| Part UCC / Appendix 24 |
Design Rules for Clamp Connections |
| Part UEB / Appendix 26 |
Bellows Expansion Joints (U-Shaped unreinforced and reinforced only) |
| Part UHX |
Rules for Shell-and-Tube Heat Exchangers |
| Part UJV / Appendix 9 |
Jacketed Vessels |
| Part UNC / Appendix 13 |
Vessels of Noncircular Cross Section |
| Appendix 1 |
Supplementary Design Formulas |
| Appendix 2 |
Rules for Bolted Flange Connections With Ring Type Gaskets |
| Appendix 41 |
Electric Immersion Heater Element Support Plates |
| Appendix 46 |
Rules for Use of Section VIII, Division 2 |
| Appendix Y |
Flat Face Flanges With Metal-to-Metal Contact Outside the Bolt Circle |
| Appendix EE |
Half-Pipe Jackets |
Additional verifications
When designing according to ASME VIII Div. 1, NextGen also supports the following verifications based on additional international standards:
- Standard flanges verification according to ASME B16.5 and ASME B16.47
- Local loads verification according to WRC bulletins
- Pipe bends verification according to ASME B31.3
- Expansion joints verification according to EJMA
- Structural analysis and lifting analysis for vertical vessels
- Heat exchanger design according to TEMA