Load transfer from flange to nozzle

For nozzle to shell please see VIII-2: 4.5.15

4.5.15 Local Stresses in Nozzles in Shells and Formed Heads from External Loads
Localized stresses at nozzle locations in shells and formed shall be evaluated using one of the method
shown below. For each method, the acceptance criteria shall be in accordance with Part 5.
a) Nozzles in cylindrical shells – stress calculations shall be in accordance with WRC 107 or WRC 297.

b) Nozzles in formed shells – stress calculations shall be in accordance with WRC 107.

c) For all configurations, and as an alternative to paragraph 4.5.15.a and paragraph 4.5.15.b, the stress calculations may be performed using a numerical analysis such as the finite element method.

For flange to flange please see VIII-2: 4.16.7

4.16.7 Flange Design Procedure
4.16.7.1 The procedure in this paragraph can be used to design circular integral, loose or reverse
flanges, subject to internal or external pressure, and external loadings. The procedure incorporates both a

strength check and a rigidity check for flange rotation.

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