U-2(g)(1)(-a) and Appendix 46 of ASME Sec VIII Div 1

[kremenco]

Is it an intent of code paragraph U-2(g)(1)(-a) to exclude the use of Appendix 46 to design the components of a Division 1 pressure vessel when design rules exist in Division 1?

 

[BJI]

No, refer to UG-16(a). However, I believe it excludes the use of DBA, where rules exist in Div.2 (since this is also the case for Div.2). But, it isn't quite clear whether design rules of Appendix 46 means 46-3 Design by Rule, or the full scope of Appendix 46 which would include 46-4 Design by Analysis.

 

[IdanPV]

https://www.eng-tips.com/viewthread.cfm?qid=514178

 

[kremenco]

Hi BJI and IdanPV,
Thanks for your inputs.
From your replies can I conclude that while it is allowed to use Appendix-46.3(design by rule) to design the components of a Division 1 pressure vessel when design rules exist in Division 1, it is prohibited to use Appendix 46-4(design by analysis) for the same purpose.
Kind Regards,
kremenco