TY JOUR TI FEATURES OF VENTILATION OF ARC WELDING WORKPLACES IN SMALL ROOMS KW electric arc welding KW lift-and-turn exhaust devices KW ventilation efficiency KW computer simulation JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Shaptala, V.V. AU Hukalenko, E.E. AU Severin, N.N. AU Gusev, Y.M. PY 2022 IS 7 PB Belgorod State Technological University named after V.G. Shukhov