Hello, Bogu!
This interpretation has to do with VIII-1, Appendix 2, Applicability for Designing Autoclaves and Hydroclaves,
Issued on January 20, 1995.
The question was if the rules presented in Section VIII, Division 1, Appendix 2 were applicable for the design of special autoclave and hydroclave closures.
The reply was no, see U-2(g) and UG-35.
Regards,
Oleg A. Barsky, P.E.