Nozzle

Nozzles are openings in other components such as heads, reducers, and cylindrical shells.  The nozzle methodology comes from the following Section VIII, Division 1 paragraphs:

• UG-37 (Reinforcement) 
• UG-39 (Reinforcement in flat heads)
• UG-40 (Limits of Reinforcement)
• UG-41 (Weld Path Strength)
• UG-45 (Nozzle Neck Thickness)
• UW-15 (Weld Unit Strength)
• UW-16 (Weld Details)
• Appendix 1-7(a) (Compact Reinforcement)
• Appendix 1-7(b) (Large Opening Rigidity)

DesignCalcs will flag a design as passing or failing for all of these cases except UW-16.  In this case, the user is warned if the design violates our interpretation of the code; but it will not be flagged as failed.

Articles in this section:

• Nozzle - Area Information
• Nozzle - Area of Reinforcement Definitions
• Nozzle - Design Information
• Nozzle - Determining if UG-16 Applies
• Nozzle - Discussion on Limitations and Scope Assumptions for Equations in ASME SC VIII, Division 1, Figure UG-37.1
• Nozzle - Flange/MDMT
• Nozzle - General Information
• Nozzle - Planes of Reinforcement Methodology
• Nozzle - The Appendix 1-7(b) Rn over R ratio
• Nozzle - Troubleshooting

Additonal Reading:

• Seamless Equivalent Criteria