Welding for aerospace applications - Qualification test for welders and welding operators - Fusion welding of metallic components (ISO 24394:2008 + Amd. 1:2013)— 39 стр.
Railway applications - Track - Safety protection on the track during work - Part 3: Competences for personnel related to work on or near tracks; German version EN 16704-3:2016— 31 стр.