Repair of 1983 Alstom Turbine

The turbine was made by Alstom in 1983, it is 12 MW. The machine is TIG dp 221 HPA AC/DC, welded at around 160-180A in DC mode, gas argon 5.0, TIG rod was nickel alloy. It lasted around 7 hours continuously to finish both place of small cracks and place of big cracks. The machine did not switch off because of heavy duty work, and the arc of this machine is smooth and stable.
Special Thanks to Mr. Zoran from Company Sealteck VAR d.o.o.