Nozzle MDMT calculation (Neck pipe thickness) 1

[Steve.sw90]

Whle doing the calculation for nozzle MDMT as per UCS-66(a), Assuming that we have a nozzle with Pipe, flange and RF pad, While concluding to value of MDMT what shall we consider the thickness of pipe, Nominal or reduced thickness(considering 12.5% under tolerance).
Definition of governing thickness mentioned in UCS-66 is not very clear when I am comparing it with a report generated from compress software, Compress is considering the reduced thickness which I find ok when I read it along with Note(1) from the figure UCS-66.2. AI is claiming that we cannot use Fig. UCS-66.2 as UCS-66.2 not referred within UCS-66(a, I tried to justify that Fig. UCS-66.2 covers UCS-66(a)in step-2 and note(5). Please let me know if anybody has any relevant information regarding this confusion.

Regards,
Stephen
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[david339933]

Correct.....reduced thickness.
Your AI is not making much sense....

UCS-66(b)(1)(-a): "For such components, and for a MDMT of -55F and warmer, the MDMT without impact testing determined in (a) above for the given material and thickness may be reduced as determined from Figure UCS-66.2."

UCS-66(a) - tells you to use FIG UCS-66 to get exemption temp, and gives governing thicknesses.
UCS-66(b) - gives a way to reduce the temp established by (a).