NR 440.32(6)(a)1.a.a. For incinerators that achieved an average particulate matter emission rate of 0.38 kg/Mg (0.75 lb/ton) dry sludge input or less during the most recent performance test, a scrubber pressure drop reduction of more than 30% from the average scrubber pressure drop recorded during the most recent performance test shall be reported.
NR 440.32(6)(a)1.b.b. For incinerators that achieved an average particulate matter emission rate of greater than 0.38 kg/Mg (0.75 lb/ton) dry sludge input during the most recent performance test, a percent reduction in pressure drop greater than that calculated according to the following equation shall be reported:
P = - 111E + 72.15
where:
P is the percent reduction in pressure drop, and
E is the average particulate matter emissions (kg/megagram)
NR 440.32(6)(a)2.2. A record of average oxygen content in the incinerator exhaust gas for each period of 1-hour duration or more that the oxygen content of the incinerator exhaust gas exceeds the average oxygen content measured during the most recent performance test by more than 3%.
NR 440.32(6)(b)(b) The owner or operator of any multiple hearth, fluidized bed or electric sludge incinerator from which the average particulate matter emission rate measured during the performance test required under sub. (5) (d) exceeds 0.38 g/kg of dry sludge input (0.75 lb/ton of dry sludge input) shall include in the report for each calendar day that a decrease in scrubber pressure drop or increase in oxygen content of exhaust gas is reported a record of the following:
NR 440.32(6)(b)1.1. Scrubber pressure drop averaged over each 1-hour incinerator operating period.
NR 440.32(6)(b)2.2. Oxygen content in the incinerator exhaust averaged over each 1-hour incinerator operating period.
NR 440.32(6)(b)3.3. Temperatures of every hearth in multiple hearth incinerators; of the bed and outlet of fluidized bed incinerators; and of the drying, combustion and cooling zones of electric incinerators averaged over each 1-hour incinerator operating period.
NR 440.32(6)(b)4.4. Rate of sludge charged to the incinerator averaged over each 1-hour incinerator operating period.
NR 440.32(6)(b)5.5. Incinerator fuel use averaged over each 8-hour incinerator operating period.
NR 440.32(6)(b)6.6. Moisture and volatile solids content of the daily grab sample of sludge charged to the incinerator.
NR 440.32(6)(c)(c) The owner or operator of any sludge incinerator other than a multiple hearth, fluidized bed or electric incinerator or any sludge incinerator equipped with a control device other than a wet scrubber shall include in the semiannual report a record of control device operation measurements, as specified in the plan approved under sub. (4) (e).
NR 440.32 HistoryHistory: Cr. Register, January, 1984, No. 337, eff. 2-1-84; am. (2) (intro.), Register, September, 1990, No. 417, eff. 10-1-90; am. (4) (a) 1., cr. (4) (b) to (e) and (6), r. and recr. (5), Register, July, 1993, No. 451, eff. 8-1-93; am. (5) (d) 2., r. (5) (d) 3. to 5., Register, December, 1995, No. 480, eff. 1-1-96; CR 06-109: am. (4) (b) 3., (5) (b) 4. and 5. (intro.) and c., r. and recr. (5) (b) 1. and 3. Register May 2008 No. 629, eff. 6-1-08.
NR 440.33NR 440.33Primary copper smelters.
NR 440.33(1)(1)Applicability and designation of affected facility.
NR 440.33(1)(a)(a) The provisions of this section are applicable to the following affected facilities in primary copper smelters: dryer, roaster, smelting furnace, and copper converter.
NR 440.33(1)(b)(b) Any facility under par. (a) that commences construction or modifications after October 16, 1974, is subject to the requirements of this section.
NR 440.33(2)(2)Definitions. As used in this section, terms not defined in this subsection have the meanings given in s. NR 440.02.
NR 440.33(2)(a)(a) “Calcine” means the solid materials produced by a roaster.
NR 440.33(2)(b)(b) “Copper converter” means any vessel to which copper matte is charged and oxidized to copper.
NR 440.33(2)(c)(c) “Dryer” means any facility in which a copper sulfide ore concentrate charge is heated in the presence of air to eliminate a portion of the moisture from the charge, provided less than 5% of the sulfur contained in the charge is eliminated in the facility.
NR 440.33(2)(d)(d) “Fossil fuel” means natural gas, petroleum, coal and any form of solid, liquid or gaseous fuel derived from such materials for the purpose of creating useful heat.
NR 440.33(2)(e)(e) “High level of volatile impurities” means a total smelter charge containing more than 0.2 weight percent arsenic, 0.1 weight percent antimony, 4.5 weight percent lead or 5.5 weight percent zinc, on a dry basis.
NR 440.33(2)(f)(f) “Primary copper smelter” means any installation or any intermediate process engaged in the production of copper from copper sulfide ore concentrates through the use of pyrometallurgical techniques.
NR 440.33(2)(g)(g) “Reverberatory smelting furnace” means any vessel in which the smelting of copper sulfide ore concentrates or calcines is performed and in which the heat necessary for smelting is provided primarily by combustion of fossil fuel.
NR 440.33(2)(h)(h) “Roaster” means any facility in which a copper sulfide ore concentrate charge is heated in the presence of air to eliminate a significant portion (5% or more) of the sulfur contained in the charge.