Flange Allowable @ Stress Multiplier - CAESAR II - Help

CAESAR II Users Guide (2019 Service Pack 1)

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CAESAR II
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CAESAR II Version
11.0 (2019)

Applies the increased allowable (1.5) for the radial and tangential operating ASME flange allowables. This increase is implied in B31.1 Appendix II Section 4.2.3 when it states that the longitudinal hub, tangential and radial stress allowables are equal to the yield stress at design temperature, which is essentially 1.5(S).

Prior to the 1992 edition of the ASME NC code, NC paragraph 3658.1(d) also stated that the tangential and radial stress allowables could be increased by 50%. The 1992 edition of NC eliminated this increase on these allowables.