Atomic Hydrogen is also formed with atomic hydrogen welding.
Atomic hydrogen welding (AHW) is an arc welding process that uses an arc between two tungsten electrodes in a shielding atmosphere of hydrogen.
Different metals or alloys can be welded with this method, e.g. Nickel.
One may wonder whether this allows for forming UDH during AHW and if so, why aren't there any unexpected effects reported.
I think there are, Energetic anomalies have been reported in very simple experiments. Not long ago I started this thread about it: