Burdekin
Chief Bodger
- Messages
- 6,657
- Location
- Aberdeen
When I was a maintenance fitter/welder at a vegetable oil refinery all our piping was stainless and everything we welded was purged and welded with clean wire. Way back in the early 90s though.Lots of food production pipework is specified this way and it is allegedly to prevent contamination entering the weld from filler rods.
According to one of our clients QC he states that while metals may be cleaned and prepped correctly, nobody cleans the filler rods to be used.