Section NR 254.041 - Specialized definitionsThe following definitions are applicable to the terms used in the steelmaking subcategory:
(1) "Basic oxygen furnace steelmaking" means the production of steel from any combination of molten iron, steel scrap, and fluxes in refractory lined furnaces by adding oxygen.(2) "Electric arc furnace steelmaking" means the production of steel principally from steel scrap and fluxes in refractory lined furnaces by passing an electric current through the scrap or steel bath.(3) "Open combustion" means basic oxygen furnace steel making wet air cleaning systems which are designed to allow excess air to enter the air pollution control system for the purpose of combusting the carbon monoxide furnace gases.(4) "Open hearth furnace steelmaking" means the production of steel from any combination of molten iron, steel scrap, and fluxes in refractory lined fuel fired furnaces equipped with regenerative chambers to recover heat from the flue and combustion gases.(5) "Semi-wet" means steelmaking air cleaning systems that use water for the sole purpose of conditioning the temperature and humidity of furnace gases such that the gases may be cleaned in dry air pollution control systems.(6) "Suppressed combustion" means basic oxygen furnace steelmaking wet air cleaning systems which are designed to limit or suppress the combustion of carbon monoxide in furnace gases by restricting the amount of excess air entering the air pollution control system.(7) "Wet" means steelmaking air cleaning systems that primarily use water for furnace gas cleaning.Wis. Admin. Code Department of Natural Resources NR 254.041
Cr. Register, May, 1989, No. 401, eff. 6-1-89.