NR 463.13(6)
(6) Sweat furnace. On and after the compliance date established by
s. NR 463.115, the owner or operator of a sweat furnace at a secondary aluminum production facility that is a major or area source may not discharge or cause to be discharged to the atmosphere emissions in excess of 0.80 nanogram (ng) of D&F TEQ per dscm (3.5 x 10
-10 gr per dscf) at 11% oxygen. A performance test is not required under
s. NR 463.163 (6) to demonstrate compliance with this emission standard provided that the owner or operator operates and maintains an afterburner with a design residence time of 0.8 seconds or greater and an operating temperature of 1600
°F or greater.
NR 463.13(7)
(7) Dross-only furnace. On and after the compliance date established by
s. NR 463.115, the owner or operator of a dross-only furnace at a secondary aluminum production facility that is a major source may not discharge or cause to be discharged to the atmosphere either of the following:
NR 463.13(7)(a)
(a) Emissions in excess of 0.15 kg of PM per Mg (0.30 lb of PM per ton) of feed or charge.
NR 463.13(7)(b)
(b) Visible emissions in excess of 10% opacity from any PM add-on air pollution control device if a COM is chosen as the monitoring option.
NR 463.13(8)
(8) Rotary dross cooler. On and after the compliance date established by
s. NR 463.115, the owner or operator of a rotary dross cooler at a secondary aluminum production facility that is a major source may not discharge or cause to be discharged to the atmosphere either of the following:
NR 463.13(8)(a)
(a) Emissions in excess of 0.09 g of PM per dscm (0.04 gr per dscf).
NR 463.13(8)(b)
(b) Visible emissions in excess of 10% opacity from any PM add-on air pollution control device if a COM is chosen as the monitoring option.
NR 463.13(9)
(9) Group 1 furnace. The owner or operator of a group 1 furnace shall use the limits in this subsection to determine the emission standards for a SAPU under
sub. (11).
NR 463.13(9)(a)
(a) 0.20 kg of PM per Mg (0.40 lb of PM per ton) of feed or charge from a group 1 furnace, that is not a melting and holding furnace processing only clean charge, at a secondary aluminum production facility that is a major source.
NR 463.13(9)(b)
(b) 0.40 kg of PM per Mg (0.80 lb of PM per ton) of feed or charge from a group 1 melting and holding furnace processing only clean charge at a secondary aluminum production facility that is a major source.
NR 463.13(9)(c)
(c) 15
µg of D&F TEQ per Mg (2.1 x 10
-4 gr of D&F TEQ per ton) of feed or charge from a group 1 furnace at a secondary aluminum production facility that is a major or area source. This limit does not apply if the furnace processes only clean charge.
NR 463.13(9)(d)
(d) 0.20 kg of HCl per Mg (0.40 lb of HCl per ton) of feed or charge or, if the furnace is equipped with an add-on air pollution control device, 10% of the uncontrolled HCl emissions, by weight, for a group 1 furnace at a secondary aluminum production facility that is a major source.
NR 463.13(9)(e)
(e) The owner or operator of a group 1 furnace at a secondary aluminum production facility that is a major source may not discharge or cause to be discharged to the atmosphere visible emissions in excess of 10% opacity from any PM add-on air pollution control device if a COM is chosen as the monitoring option.
NR 463.13(9)(f)
(f) The owner or operator may determine the emission standards for a SAPU by applying the group 1 furnace limits on the basis of the aluminum production weight in each group 1 furnace, rather than on the basis of feed or charge.
NR 463.13(9)(g)
(g) The owner or operator of a sidewell group 1 furnace that conducts reactive fluxing, except for cover flux, in the hearth, or that conducts reactive fluxing in the sidewell at times when the level of molten metal falls below the top of the passage between the sidewell and the hearth, shall comply with the emission limits of
pars. (a) to
(d) on the basis of the combined emissions from the sidewell and the hearth.
NR 463.13(10)
(10) In-line fluxer. Except as provided in
par. (c) for an in-line fluxer using no reactive flux material, the owner or operator of an in-line fluxer shall use the limits in this subsection to determine the emission standards for a SAPU under
sub. (11).
NR 463.13(10)(a)
(a) 0.02 kg of HCl per Mg (0.04 lb of HCl per ton) of feed or charge.
NR 463.13(10)(b)
(b) 0.005 kg of PM per Mg (0.01 lb of PM per ton) of feed or charge.
NR 463.13(10)(c)
(c) The emission limits in
pars. (a) and
(b) do not apply to an in-line fluxer that uses no reactive flux materials.
NR 463.13(10)(d)
(d) The owner or operator of an in-line fluxer at a secondary aluminum production facility that is a major source may not discharge or cause to be discharged to the atmosphere visible emissions in excess of 10% opacity from any PM add-on air pollution control device used to control emissions from the in-line fluxer, if a COM is chosen as the monitoring option.
NR 463.13(10)(e)
(e) The owner or operator may determine the emission standards for a SAPU by applying the in-line fluxer limits on the basis of the aluminum production weight in each in-line fluxer, rather than on the basis of feed or charge.
NR 463.13(11)
(11) Secondary aluminum processing unit. On and after the compliance date established by
s. NR 463.115, the owner or operator shall comply with the emission limits calculated using the equations for PM and HCl in
pars. (a) and
(b) for each secondary aluminum processing unit at a secondary aluminum production facility that is a major source. The owner or operator shall comply with the emission limit calculated using the equation for D&F in
par. (c) for each secondary aluminum processing unit at a secondary aluminum production facility that is a major or area source.
NR 463.13(11)(a)
(a) The owner or operator may not discharge or allow to be discharged to the atmosphere any 3-day, 24-hour rolling average emissions of PM in excess of:
where:
-
See PDF for diagram 
is the PM emission limit for individual emission unit i in
sub. (9) (a) and
(b) for a group 1 furnace or in
sub. (10) (b) for an in-line fluxer
NR 463.13 Note
Note: In-line fluxers using no reactive flux materials cannot be included in this calculation since they are not subject to the PM limit.
NR 463.13(11)(b)
(b) The owner or operator may not discharge or allow to be discharged to the atmosphere any 3-day, 24-hour rolling average emissions of HCl in excess of:
where:
-
See PDF for diagram is the HCl emission limit for individual emission unit i in
sub. (9) (d) for a group 1 furnace or in
sub. (10) (a) for an in-line fluxer
NR 463.13 Note
Note: In-line fluxers using no reactive flux materials cannot be included in this calculation since they are not subject to the HCl limit.
NR 463.13(11)(c)
(c) The owner or operator may not discharge or allow to be discharged to the atmosphere any 3-day, 24-hour rolling average emissions of D&F in excess of:
where:
-
See PDF for diagram is the D&F emission limit for individual emission unit i in
sub. (9) (c) for a group 1 furnace
NR 463.13 Note
Note: Clean charge furnaces cannot be included in this calculation since they are not subject to the D&F limit.
NR 463.13(11)(d)
(d) The owner or operator of a SAPU at a secondary aluminum production facility that is a major source may demonstrate compliance with the emission limits of
pars. (a) to
(c) by demonstrating that each emission unit within the SAPU is in compliance with the applicable emission limits of
subs. (9) and
(10).
NR 463.13(11)(e)
(e) The owner or operator of a SAPU at a secondary aluminum production facility that is an area source may demonstrate compliance with the emission limits of
par. (c) by demonstrating that each emission unit within the SAPU is in compliance with the emission limit of
sub. (9) (c).
NR 463.13(11)(f)
(f) With the prior approval of the department, an owner or operator may redesignate any existing group 1 furnace or in-line fluxer at a secondary aluminum production facility as a new emission unit. Any emission unit so redesignated may thereafter be included in a new SAPU at that facility. Any redesignation shall be solely for the purpose of this MACT standard and shall be irreversible.
NR 463.13 History
History: CR 04-023: cr.
Register December 2008 No. 636, eff. 1-1-09.
NR 463.14(1)(a)(a) On and after the compliance date established by
s. NR 463.115, the owner or operator shall operate all new and existing affected sources and control equipment according to the requirements in this section.
NR 463.14(1)(b)
(b) The owner or operator of an existing sweat furnace that meets the specifications of
s. NR 463.13 (6) shall operate the sweat furnace and control equipment according to the requirements of this section on and after the compliance date established by
s. NR 463.115.
NR 463.14(1)(c)
(c) The owner or operator of a new sweat furnace that meets the specifications of
s. NR 463.13 (6) shall operate the sweat furnace and control equipment according to the requirements of this section by March 23, 2000 or upon startup, whichever is later.
NR 463.14(1)(d)
(d) Operating requirements are summarized in the following table.
Table 2
a Thermal chip dryers, scrap dryers, delacquering kilns, dross-only furnaces, in-line fluxers and group 1 furnaces including melting and holding furnaces.
b OM&M plan- Operation, maintenance, and monitoring plan.
c Site-specific monitoring plan. Owners and operators of group 1 furnaces without control devices shall include a section in their OM&M plan that documents work practices and pollution prevention measures, including procedures for scrap inspection, by which compliance is achieved with emission limits and process or feed parameter-based operating requirements. This plan and the testing to demonstrate adequacy of the monitoring plan shall be developed in coordination with and approved by the department.
NR 463.14(2)
(2) Labeling. The owner or operator shall provide and maintain easily visible labels posted at each group 1 furnace, group 2 furnace, in-line fluxer, scrap dryer, delacquering kiln and decoating kiln that identify the applicable emission limits and means of compliance, including all of the following:
NR 463.14(2)(a)
(a) The type of affected source or emission unit, such as a scrap dryer, delacquering kiln or decoating kiln, group 1 furnace, group 2 furnace or in-line fluxer.
NR 463.14(2)(b)
(b) The applicable operational standards and control methods, including work practice or control device. This includes the type of charge to be used for a furnace, including clean scrap only, all scrap, or other, flux materials and addition practices, and the applicable operating parameter ranges and requirements as incorporated in the operations maintenance and monitoring plan required by
s. NR 463.15 (2).
NR 463.14(2)(c)
(c) The afterburner operating temperature and design residence time for a scrap dryer, delacquering kiln or decoating kiln.
NR 463.14(3)
(3) Capture and collection systems. For each affected source or emission unit equipped with an add-on air pollution control device, the owner or operator shall do all of the following:
NR 463.14(3)(a)
(a) Design and install a system for the capture and collection of emissions to meet the engineering standards for minimum exhaust rates as published by the American Conference of Governmental Industrial Hygienists in chapters 3 and 5 of Industrial Ventilation: A Manual of Recommended Practice, incorporated by reference in
s. NR 484.11 (2) (d).
NR 463.14(3)(b)
(b) Vent captured emissions through a closed system, except that dilution air may be added to emission streams for the purpose of controlling temperature at the inlet to a fabric filter.
NR 463.14(3)(c)
(c) Operate each capture and collection system according to the procedures and requirements in the operation, maintenance and monitoring (OM&M) plan.
NR 463.14(4)
(4) Feed or charge weight. The owner or operator of each affected source or emission unit subject to an emission limit in kg/Mg (lb/ton) or
µg/Mg (gr/ton) of feed or charge shall comply with both
pars. (a) and
(b).
NR 463.14(4)(a)
(a) Except as provided in
par. (c), install and operate a device that measures and records or otherwise determine the weight of feed or charge (or throughput) for each operating cycle or time period used in the performance test.
NR 463.14(4)(b)
(b) Operate each weight measurement system or other weight determination procedure in accordance with the OM&M plan.
NR 463.14(4)(c)
(c) The owner or operator may chose to measure and record aluminum production weight from an affected source or emission unit rather than feed or charge weight to an affected source or emission unit, provided that both of the following conditions are met:
NR 463.14(4)(c)1.
1. The aluminum production weight, rather than feed or charge weight is measured and recorded for all emission units within a SAPU.
NR 463.14(4)(c)2.
2. All calculations to demonstrate compliance with the emission limits for SAPUs are based on aluminum production weight rather than feed or charge weight.
NR 463.14(5)
(5) Aluminum scrap shredder. The owner or operator of a scrap shredder with emissions controlled by a fabric filter shall operate a bag leak detection system or a continuous opacity monitor or conduct visible emissions observations.
NR 463.14(5)(a)
(a) If a bag leak detection system is used to meet the monitoring requirements in
s. NR 463.15, the owner or operator shall do all of the following:
NR 463.14(5)(a)1.
1. Initiate corrective action within one hour of a bag leak detection system alarm and complete the corrective action procedures in accordance with the OM&M plan.
NR 463.14(5)(a)2.
2. Operate each fabric filter system such that the bag leak detection system alarm does not sound more than 5% of the operating time during a 6-month block reporting period. In calculating this operating time fraction, if inspection of the fabric filter demonstrates that no corrective action is required, no alarm time shall be counted. If corrective action is required, each alarm shall be counted as a minimum of one hour. If the owner or operator takes longer than one hour to initiate corrective action, the alarm time shall be counted as the actual amount of time taken by the owner or operator to initiate corrective action.
NR 463.14(5)(b)
(b) If a continuous opacity monitoring system is used to meet the monitoring requirements in
s. NR 463.15, the owner or operator shall initiate corrective action within one hour of any 6-minute average reading of 5% or more opacity and complete the corrective action procedures in accordance with the OM&M plan.
NR 463.14(5)(c)
(c) If visible emission observations are used to meet the monitoring requirements in
s. NR 463.15, the owner or operator shall initiate corrective action within one hour of any observation of visible emissions during a daily visible emissions test and complete the corrective action procedures in accordance with the OM&M plan.
NR 463.14(6)
(6) Thermal chip dryer. The owner or operator of a thermal chip dryer with emissions controlled by an afterburner shall do all of the following:
NR 463.14(6)(a)
(a) Maintain the 3-hour block average operating temperature of each afterburner at or above the average temperature established during the performance test.
NR 463.14(6)(b)
(b) Operate each afterburner in accordance with the OM&M plan.
NR 463.14(6)(c)
(c) Operate each thermal chip dryer using only unpainted aluminum chips as the feedstock.
NR 463.14(7)
(7) Scrap dryer, delacquering kiln or decoating kiln. The owner or operator of a scrap dryer, delacquering kiln or decoating kiln with emissions controlled by an afterburner and a lime-injected fabric filter shall meet
pars. (a),
(d) and
(e) and either
par. (b) or
(c) as applicable:
NR 463.14(7)(a)1.
1. Maintain the 3-hour block average operating temperature of each afterburner at or above the average temperature established during the performance test.
NR 463.14(7)(b)
(b) If a bag leak detection system is used to meet the fabric filter monitoring requirements in
s. NR 463.15, do both of the following:
NR 463.14(7)(b)1.
1. Initiate corrective action within one hour of a bag leak detection system alarm and complete any necessary corrective action procedures in accordance with the OM&M plan.
NR 463.14(7)(b)2.
2. Operate each fabric filter system such that the bag leak detection system alarm does not sound more than 5% of the operating time during a 6-month block reporting period. In calculating this operating time fraction, if inspection of the fabric filter demonstrates that no corrective action is required, no alarm time shall be counted. If corrective action is required, each alarm shall be counted as a minimum of one hour. If the owner or operator takes longer than one hour to initiate corrective action, the alarm time shall be counted as the actual amount of time taken by the owner or operator to initiate corrective action.
NR 463.14(7)(c)
(c) If a continuous opacity monitoring system is used to meet the monitoring requirements in
s. NR 463.15, initiate corrective action within one hour of any 6-minute average reading of 5% or more opacity and complete the corrective action procedures in accordance with the OM&M plan.
NR 463.14(7)(d)
(d) Maintain the 3-hour block average inlet temperature for each fabric filter at or below the sum of the average temperature established during the performance test, plus 14
°C (25
°F).
