My B31.3 code stress is showing an overstress in the hoop stress (Max P) case?

b31.3 Case code hoop stress
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My B31.3 code stress is showing an overstress in the hoop stress (Max P) case?

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Suggest check the mill tolerance, corrosion allowance and pressure at the points of overstress. Note: Miter bends have a different hoop stress calculation to straight pipe. Autopipe is based on the more conservative B31.3 equation 3a. Note: Autopipe always defaults to Y factor = 0.4 (i.e carbon steel <=900F), for different materials and/or higher temperatures change the Y-factor under Tools model options /Results "Y Factor". Default weld efficiency factor = 1.0. Autopipe 6.X Online help topic Autopipe Reference information / Code Compliance Calculations/ASME B31.1 hoop stress calculation.

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