Section VIII-1, UG-55, UG-80, UG-82, UW-5, and Appendix 2
Date Issued:
10/01/1984
Record Number:
BC82-122
Interpretation Number :
VIII-1-83-297
Question(s) and Reply(ies):
Question (1): What rules in Section VIII, Division 1, shall be used for the design of a flange with a full face gasket?
Reply (1): Section VIII, Division 1, contains no rules for the design of flanges using full face gaskets. [Refer to U-2(g).]
Question (2): For nonpressure parts fabricated of material not specified in Section VIII, Division 1, does the act of welding one nonpressure part to another part prove weldability?
Reply (2): Yes; see UG-5(b).
Question (3): Does the process used to weld nonpressure parts to pressure parts (the shell) require a WPS?
Reply (3): Yes.
Question (4): In Section VIII, Division 1, for stiffening rings on a vessel under external pressure where all the rules of UG-30 are met, is it also necessary to meet the rules of UG-82(b)?
Reply (4): No.
Question (5): Are roundness templates required for shells subject to internal pressure only?