The tack welds are being made by qualified ASME welders. The issue is not that the welds are being made by contractors, but that they don't want to inspect them, and to justify that by "proving" that the tacks are consumed.
My shop doesn't want to inspect their tack welds anymore, so they want to prove that they are consumed in the final weld. I assume they'll be using some sort of macro etch to do so. It's a section 8 shop, but I found some section 4 and section 3 interpretations that say this is allowed, so I am...
In this case specifically, the holes are being used to attach a non-Code water box to the tubesheet of a single-pass evaporator. On a lot of other units from this manufacturer, those holes are located outside of the pressure boundary making it act as a sort of flange, but with these units the...
Shells and hemi heads have mandatory appendix 32 in section VIII div 1 as guidance for calculating a "local thin area." Is there an acceptable method of calculating a local thin area (such as a bolt hole) for flat heads and/or tubesheets?
