It appears that ASME B31.3 does not have much info on how a pipe support welded to line pipe should be assessed for low temp.
Should the governing thickness be the thickness of the support?
From what I know about pressure vessels, the thickness is also less than the nominal thickness of the part welded to the vessel
Should the governing thickness be the thickness of the support?
From what I know about pressure vessels, the thickness is also less than the nominal thickness of the part welded to the vessel