Welding C44300 to SA516-70
Welding C44300 to SA516-70
(OP)
Would like to know if anyone has experienced any problems joining C44300 to SA516-70. Also would appreciate any info on filler metal choice.
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Welding C44300 to SA516-70
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RE: Welding C44300 to SA516-70
RE: Welding C44300 to SA516-70
RE: Welding C44300 to SA516-70
RE: Welding C44300 to SA516-70
RE: Welding C44300 to SA516-70
First off, for any weld repairs to an existing pressure retaining item you need or should follow an in-service repair code (in this case I recommend the National Board Inspection Code). Second, you need to confirm the materials of construction, and that includes the original tubesheet material. Do not guess and do not make recommendations unless you know the specific design conditions for this heat exchanger. Your weld repair should follow the requirements of the code of construction, which in this case is ASME, Section VIII, Div 1 requirements. Also, does your organization have a Certificate from the National Board to weld repair these types of pressure retaining items? If not, I would not perform this repair.
RE: Welding C44300 to SA516-70
RE: Welding C44300 to SA516-70
Ok, now you are clear. If you offer an alternative material this could be construed as an alteration, see Part RC of the NBIC. An alteration opens a whole set of new issues that if you have an R-Stamp you should be well aware.
Are you sure the tubesheet is welded to the shell? Do you have any access to design documents or drawings for this heater that would help you to develop a repair plan?
RE: Welding C44300 to SA516-70
RE: Welding C44300 to SA516-70
RE: Welding C44300 to SA516-70
Thanks for the filler metal help.