UG-34 vs. UW-13: flat head attach. weld

[BigTank]

UG-34: ref. sketch (g)

The code paragraph reads (UG-34(d)): "The size of the weld tw in sketch (g) shall not be less than 2 times the required thickness of a seamless shell or less than 1.25 times the nominal shell thickness but need not be greater than the head thickness..."

UW-13: ref. sketch (e-1)

The code paragraph reads (UW-13(e)): "When shells, heads, or other pressure parts are welded to a forged or rolled plate to form a corner joint...

(UW-13(e)(3)): "For other components, the sum a and b shall be not less than two times the nominal wall thickness of the abutting pressure part. Examples of such components are flat heads..."

Are these at odds? Given a 3/8" thick plate welded into a rolled cylinder (or pipe) as a flat head, one would give a full-pen weld thickness of 3/8". The other would give 3/4".

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[SnTMan]

BigTank, the joint detail in Fig. UG-34(g) / UG-34(d) does not appear to me to be addressed by UW-13. Therefore I think it is reasonable that UG-34 governs this detail.

Regards,

Mike