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2911 - New Rules for Occasional Loads on Nozzles: Comparison of Code Rules and FEA Analysis Using NozzlePRO

Since the publication of 2007 ASME Section VIII Div 2, the occasional load approach has been changed in the Codes. This presentation will discuss the reason for the changes and will show how to employ these rules when performing a piping or pressure vessel analysis. The differences between design by correlation (Code rules) and design by FEA will be discussed and multiple examples will be presented. New features in NozzlePRO will be demonstrated that show how the ASME Section VIII Div 2, Part 5 rules must be properly interpreted for primary load evaluation of piping loads on vessel nozzles