How to Repair Damage on Emaille Inside a Steel Vessel

Allow me to translate emaille into English as enamel.

I am not sure if it is relevant, but I have seen glass lined reactors repaired with plugs of tantalum.

The manufacturer should know how to do such a repair.

I believe you may have to replace the damaged vessel...

First, you must remove the existing 'tub'. There are many CR4 members who have some knowledge of breaking such a vessel into smaller pieces, thus allowing removal. Perhaps one of them can offer advice on the technique.

^{Oh, come on! Someone had to say it!}

Well, it does depend on what the damage is, see. 'coz it might not 'ave to come out - it might be repairable. Dave and I can't do it so I'll come clean: the OP needs to get on the blower to the vessel manufacturer. They are bound to be able to do it. I knew this outfit in Scotand that done some for me many year ago. Now, what was their name? Er...

Gottit! Pfaudler-Balfour, I think it was. They're in the phone book, and probably on the wibbly-wobbly-web too. <Cough, sniffle> Damn this cold! It might be turning to 'flu! <Sneeze> Ooooh. Someone e-mail me a new hankie! <Splutter> And stop smashing up baths, you lot; I could do with one right now....