Please guide for welding aluminum

[Suradach]

I'd want to get some advice from a TIG aluminum welding expert.
Get help with WPS, PQR documentation, and welder exams.
As you can see, my company recently purchased an old welding machine for this purpose.
We need to fabrication piping and repair silo with referring Code ASME IX

 

[gtaw]

The simplest response I can give to a three week discussion is; wait for it: clean the base metal, clean the filler metal, wear chrome tanned gloves (not oil tanned) and don't use abrasives that utilize aluminum oxide "grit".

Best regards - Al