[Code of Federal Regulations]

[Title 40, Volume 28]

[Revised as of July 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 40CFR420.41]



[Page 402-403]

 

                   TITLE 40--PROTECTION OF ENVIRONMENT

 

         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)

 

PART 420_IRON AND STEEL MANUFACTURING POINT SOURCE CATEGORY--Table of 

Contents

 

                    Subpart D_Steelmaking Subcategory

 

Sec.  420.41  Specialized definitions.



    (a) The term basic oxygen furnace steelmaking means the production 

of steel from molten iron, steel scrap, fluxes, and various combinations 

thereof, in refractory lined furnaces by adding oxygen.

    (b) [Reserved]

    (c) The term 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.

    (d) The term wet means those steelmaking air cleaning systems that 

primarily use water for furnace gas cleaning.

    (e) The term semi-wet means those steelmaking air cleaning systems 

that use water for the sole purpose of conditioning the temperature and 

humidity



[[Page 403]]



of furnace gases such that the gases may be cleaned in dry air pollution 

control systems.

    (f) The term open combustion means those basic oxygen furnace 

steelmaking 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 in furnace gases.

    (g) The term suppressed combustion means those 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.



[47 FR 23284, May 27, 1982, as amended at 67 FR 64267, Oct. 17, 2002]