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In both applications, the user can now perform Appendix 14 calculations to ASME VIII Div.1. If a nozzle or opening in a flat cover has a diameter that is outside the scope of UG-39(b) then the user can now perform an Appendix 14 calculation, this is for Appendix covers Integral flat heads with a large, single, centrally located openings opening only.
For more information on the Certified List of Amendments that are code-specific, visit the following pages: