Sec. NR 463.22 - What definitions apply to this subchapter?

ยง NR 463.22. What definitions apply to this subchapter?

For terms not defined in this section, the definitions contained in chs NR 400 and 460 apply to the terms in this subchapter, with definitions in ch. NR 460 taking precedence over definitions in ch. NR 400. If this section defines a term which is also defined in ch. NR 400 or 460, the definition in this section applies in this subchapter. In this subchapter:

(1) "Automated conveyor and pallet cooling line" means any dedicated conveyor line or area used for cooling molds received from pouring stations.

(2) "Automated shakeout line" means any mechanical process unit designed for and dedicated to separating a casting from a mold. These mechanical processes include shaker decks, rotary separators and high-frequency vibration units. Automated shakeout lines do not include manual processes for separating a casting from a mold, such as personnel using a hammer, chisel, pick ax, sledge hammer or jackhammer.

(3) "Bag leak detection system" means a system that is capable of continuously monitoring relative particulate matter loadings in the exhaust of a baghouse to detect bag leaks and other upset conditions. A bag leak detection system includes an instrument that operates on triboelectric, electrodynamic, light scattering, light transmittance or other effect to continuously monitor relative particulate matter loadings.

(4) "Binder chemical" means a component of a system of chemicals used to bind sand together into molds, mold sections and cores through chemical reaction as opposed to pressure.

(5) "Capture system" means the collection of components used to capture gases and fumes released from one or more emissions points and then convey the captured gas stream to a control device or to the atmosphere. A capture system may include the following components as applicable to a given capture system design: duct intake devices, hoods, enclosures, ductwork, dampers, manifolds, plenums and fans.

(6) "Cold box mold or core making line" means a mold or core making line in which the formed aggregate is hardened by catalysis with a gas.

(7) "Combustion device" means an afterburner, thermal incinerator or scrap preheater.

(8) "Conveyance" means the system of equipment that is designed to capture pollutants at the source, convey them through ductwork and exhaust them using forced ventilation. A conveyance may include control equipment designed to reduce emissions of the pollutants. Emissions that are released through windows, vents or other general building ventilation or exhaust systems are not considered to be discharged through a conveyance.

(9) "Cooling" means the process of molten metal solidification within the mold and subsequent temperature reduction prior to shakeout.

(10) "Cupola" means a vertical cylindrical shaft furnace that uses coke and forms of iron and steel such as scrap and foundry returns as the primary charge components and melts the iron and steel through combustion of the coke by a forced upward flow of heated air.

(11) "Deviation" means any instance in which an affected source or an owner or operator of an affected source fails to meet any of the following:

(a) Any requirement or obligation established by this subchapter, including any emission limitation, operating limit, work practice standard or operation and maintenance requirement.

(b) Any term or condition that is adopted to implement an applicable requirement in this subchapter and that is included in the operating permit for any iron and steel foundry required to obtain an operating permit.

(c) Any emission limitation, operating limit or work practice standard in this subchapter during startup, shutdown or malfunction, regardless of whether or not the failure is permitted by this subchapter.

(12) "Electric arc furnace" means a vessel in which forms of iron and steel, such as scrap and foundry returns, are melted through resistance heating by an electric current flowing through the arcs formed between the electrodes and the surface of the metal and also flowing through the metal between the arc paths.

(13) "Electric induction furnace" means a vessel in which forms of iron and steel, such as scrap and foundry returns, are melted though resistance heating by an electric current that is induced in the metal by passing an alternating current through a coil surrounding the metal charge or surrounding a pool of molten metal at the bottom of the vessel.

(14) "Emissions limitation" has the meaning given in s. 285.01(16), Stats., and includes any operating limit specified in this subchapter.

(15) "Exhaust stream" means gases emitted from a process through a conveyance, as defined in sub. (8).

(16) "Free organic liquids" means material that fails the paint filter test by Method 9095A, "Paint Filter Liquids Test", Revision 1, December 1996, as published in EPA Publication SW-846 "Test Methods for Evaluating Solid Waste, Physical/Chemical Methods", incorporated by reference in s. NR 484.06(4) (e). If any portion of the material passes through and drops from the filter within the 5-minute test period, the material contains free liquids.

(17) "Fresh acid solution" means a sulfuric acid solution used for the control of triethylamine emissions that has a pH of 2.0 or less.

(18) "Fugitive emissions" means any pollutant released to the atmosphere that is not discharged through a conveyance, as defined in sub. (8).

(19) "Furan warm box mold or core making line" means a mold or core making line in which the binder chemical system used is that system commonly designated as a furan warm box system by the foundry industry.

(20) "Iron and steel foundry" means a facility or portion of a facility that melts one or more of the following: scrap, ingot or other forms of iron and steel, and pours the resulting molten metal into molds to produce final or near final shape products for introduction into commerce. Research and development facilities and operations that only produce non-commercial castings are not included in this definition.

(21) "Metal melting furnace" means a cupola, electric arc furnace or electric induction furnace that converts one or more of the following: scrap, foundry returns and other solid forms of iron and steel to a liquid state. Metal melting furnace does not include a holding furnace, an argon oxygen decarburization vessel or ladle that receives molten metal from a metal melting furnace, and to which metal ingots or other material may be added to adjust the metal chemistry.

(22) "Mold or core making line" means the collection of equipment that is used to mix an aggregate of sand and binder chemicals, form the aggregate into final shape and harden the formed aggregate. A mold or core making line does not include a line for making green sand molds or cores.

(23) "Mold vent" means an intentional opening in a mold through which gases containing pyrolysis products of organic mold and core constituents produced by contact with or proximity to molten metal normally escape the mold during and after metal pouring.

(24) "Monitoring malfunction" means any sudden, infrequent, not reasonably preventable failure of the monitoring system to provide valid data. Monitoring failures that are caused in part by poor maintenance or careless operation are not malfunctions.

(25) "Pouring area" means an area, generally associated with floor and pit molding operations, in which molten metal is brought to each individual mold. Pouring areas include all pouring operations that are not a pouring station.

(26) "Pouring station" means the fixed location to which molds are brought in a continuous or semi-continuous manner to receive molten metal, after which the molds are moved to a cooling area.

(27) "Responsible official" has the meaning given in s. NR 400.02(136).

(28) "Scrap preheater" means a vessel or other piece of equipment in which metal scrap that is to be used as melting furnace feed is heated to a temperature high enough to eliminate moisture and other volatile impurities or tramp materials by direct flame heating or similar means of heating.

(29) "Scrubber blowdown" means liquor or slurry discharged from a wet scrubber that is either removed as a waste stream or processed to remove impurities or adjust its composition or pH before being returned to the scrubber.

(30) "Work practice standard" means any design, equipment, work practice, operational standard or combination thereof, that is promulgated pursuant to section 112 (h) of the Clean Air Act (42 USC 7412(h)).

(31) "You" or "your" means the owner or operator of an iron and steel foundry.

(CR 06-110: cr. Register July 2007 No. 619, eff. 8-1-07.)

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