Seams of butt, fillet and tee welded joints of vessels and apparatus operating under pressure. Ultrasonic testing technique. With AMD 1-2009, 2-2012, 3-2020
Requirements for guard rails, devices, and equipment of conveyor safety dated 31.01.2015, approved by First Deputy General Director – Chief operations officer, Joint Stock Company 'Mining and Metallurgical Company 'NORILSK NICKEL', S.N. Dyachenko
