Category D Welds in Lethal Service Vessels
Category D Welds in Lethal Service Vessels
(OP)
Can nozzles be welded into shells or heads of lethal service vessels the "normal" way, for example, in accordance with UW-16.1(e)? Or is it required to be welded in so radiography can be performed on the joint, as shown in, for example, UW-16(f-4)? I am not seeing a requirement for radiography on category D joints, but then again, I may not be looking in the right place.
Thanks in advance,
Michigander.
Thanks in advance,
Michigander.





RE: Category D Welds in Lethal Service Vessels
RE: Category D Welds in Lethal Service Vessels
What is the vessel material?
RE: Category D Welds in Lethal Service Vessels
Best Regards,
Michigander
RE: Category D Welds in Lethal Service Vessels
Yes. Full penetration corner weld Category D joints are acceptable for lethal service. Radiography for this type of joint is not required.
RE: Category D Welds in Lethal Service Vessels
Thanks again!
Michigander
RE: Category D Welds in Lethal Service Vessels
Or does the language only apply to the welds IN nozzles, not the welds of nozzles to vessels?