We have a customer that has come back on our ASME P91 GTAW procedures that 400deg preheat is insufficient. They require us to maintain a MINIMUM preheat of 899F!!! No, that's not a typo.
Here's the real kicker....they ALSO require a MAX heat input of 1.2 kJ/mm.
Yes, I know it's impractical but they are adamant that we meet their requirements.
I am curious of the community's collective thought. We are a bit curious here and treating it like a brain-teaser...what would happen if we ACTUALLY tried to weld it with those req.
Here's the real kicker....they ALSO require a MAX heat input of 1.2 kJ/mm.
Yes, I know it's impractical but they are adamant that we meet their requirements.
I am curious of the community's collective thought. We are a bit curious here and treating it like a brain-teaser...what would happen if we ACTUALLY tried to weld it with those req.