Sec. 216.8. Equipment requirements

(a) Owners and operators of a blast furnace must not cause or allow emissions of particulates unless the blast furnace is equipped with:

(1) an exhaust system to capture and contain the emissions from the iron notch and trough between the furnace and skimmer during the tapping of hot metal. The captured particulate emissions must be conveyed to and be collected by an air cleaning device. In addition to the other requirements of this Part, the exhaust gas must be cleaned by the air cleaning device so that gas released to the atmosphere complies with the emissions limitations in Table 1 of this Part; or

(2) an emission suppression and shrouding containment system extending from the tap hole to the ends of all molten metal and slag runners. Containment of the emissions must be effectively maintained during the tapping operation except when drilling and plugging the tap hole. Supression measures sufficient to adequately control the emissions must be applied during tapping at the discharge points of the molten metal and slag runners and during drilling and plugging at the tap hole.

(b) In addition to the requirements of paragraph (a)(1) of this section, owners and operators of a blast furnace constructed after December 31, 1981 must not cause or allow emissions of particulates unless the blast furnace is equipped with an exhaust system to capture and contain the emissions from all molten metal and slag runners and discharge points during the tapping of hot metal. The captured particulate emissions must be conveyed to and collected by an air cleaning device. In addition to the other requirements of this Part, the exhaust gas must be cleaned by the air cleaning device so that gas released to the atmosphere complies with the emission limitations in Table 1 of this Part.

(c) Owners and operators of a basic oxygen furnace must not cause or allow emissions of particulates unless the basic oxygen furnace is equipped with both a primary exhaust system to capture and contain all particulate emissions from the lancing and fluxing operations and a secondary hood or a modification of the primary hood to capture and contain all particulate emissions from the tapping operation. The captured particulate emissions must be cleaned by an air cleaning device that causes the exhaust gas emitted to the atmosphere to be in compliance with the emissions limitations in Table 1 of this Part.

(d) Any person who constructs or modifies an iron and/or steel process which is not a confined process must control the emissions of particulates to the outdoor atmosphere using best available control technology.

(e) Control device systems serving more than one emission source must be capable of controlling all simultaneously generated emissions at the limits contained in Table 1 of this Part.