NR 463.23(3)(b)5.a.
a. Inspecting the baghouse for air leaks, torn or broken bags or filter media or any other condition that may cause an increase in emissions.
NR 463.23(3)(b)5.c.
c. Replacing defective bags or filter media or otherwise repairing the control device.
NR 463.23(3)(b)5.e.
e. Cleaning the bag leak detection system probe or otherwise repairing the bag leak detection system.
NR 463.23(3)(b)6.
6. Procedures for providing an ignition source to mold vents of sand mold systems in each pouring area and pouring station unless you determine the mold vent gases either are not ignitable, ignite automatically or cannot be ignited due to accessibility or safety issues. You shall document and maintain records of the determination of ignitability, accessibility and safety. The determination may encompass multiple casting patterns provided the castings utilize similar sand-to-metal ratios, binder formulations and coating materials. The determination of ignitability shall be based on observations of the mold vents within 5 minutes of pouring, and the flame shall be present for at least 15 seconds for the mold vent to be considered ignited. For the purpose of the determination made under this subdivision, both of the following apply:
NR 463.23(3)(b)6.a.
a. Mold vents that ignite more than 75% of the time without the presence of an auxiliary ignition source are considered to ignite automatically.
NR 463.23(3)(b)6.b.
b. Mold vents that do not ignite automatically and cannot be ignited in the presence of an auxiliary ignition source more than 25% of the time are considered to be not ignitable.
NR 463.23 History
History: CR 06-110: cr.
Register July 2007 No. 619, eff. 8-1-07.
NR 463.24
NR 463.24 General compliance requirements. NR 463.24(1)(1)
What are my general requirements for complying with this subchapter? NR 463.24(1)(a)(a) You shall be in compliance with the emissions limitations, work practice standards and operation and maintenance requirements in this subchapter at all times, except during periods of startup, shutdown or malfunction.
NR 463.24(1)(b)
(b) During the period between the compliance date specified for your iron and steel foundry in
s. NR 463.21 (4) and the date when applicable operating limits have been established during the initial performance test, you shall maintain a log detailing the operation and maintenance of the process and emissions control equipment.
NR 463.24(1)(c)
(c) You shall develop a written startup, shutdown and malfunction plan according to the provisions in
s. NR 460.05 (4) (c). The startup, shutdown and malfunction plan shall also specify what constitutes a shutdown of a cupola and how to determine that operating conditions are normal following startup of a cupola.
NR 463.24(2)
(2) What parts of the general provisions apply to me? You shall comply with the applicable general provisions requirements in
ch. NR 460.
Chapter NR 460 Appendix EEEEE shows which parts of the general provisions in
ch. NR 460 apply to you.
NR 463.24 History
History: CR 06-110: cr.
Register July 2007 No. 619, eff. 8-1-07;
correction in (2) made under s. 35.17, Stats., Register June 2015 No. 714. NR 463.25
NR 463.25 Initial compliance requirements. NR 463.25(1)
(1)
By what date must I conduct initial performance tests or other initial compliance demonstrations? NR 463.25(1)(a)(a) As required by
s. NR 460.06 (1) (b), you shall conduct a performance test no later than 180 calendar days after the compliance date that is specified in
s. NR 463.21 (4) for your iron and steel foundry to demonstrate initial compliance with each emission limitation in
s. NR 463.23 (1) that applies to you.
NR 463.25(1)(b)
(b) For each work practice standard in
s. NR 463.23 (2) and each operation and maintenance requirement in
s. NR 463.23 (3) that applies to you where initial compliance is not demonstrated using a performance test, you shall demonstrate initial compliance no later than 30 calendar days after the compliance date that is specified for your iron and steel foundry in
s. NR 463.21 (4).
NR 463.25(1)(c)
(c) If you commenced construction or reconstruction between December 23, 2002 and April 22, 2004, you shall demonstrate initial compliance with either the proposed emissions limit or the promulgated emissions limit no later than October 19, 2004 or no later than 180 calendar days after startup of the source, whichever is later, according to
s. NR 460.06 (1) (c).
NR 463.25(1)(d)
(d) If you commenced construction or reconstruction between December 23, 2002 and April 22, 2004, and you chose to comply with the proposed emissions limit when demonstrating initial compliance, you shall conduct a second performance test to demonstrate compliance with the promulgated emissions limit by October 19, 2007 or after startup of the source, whichever is later, according to
s. NR 460.06 (1) (c).
NR 463.25(2)
(2) When must I conduct subsequent performance tests? NR 463.25(2)(a)(a) You shall conduct subsequent performance tests to demonstrate compliance with all applicable PM or total metal HAP, VOHAP and TEA emissions limitations in
s. NR 463.23 (1) for your iron and steel foundry no less frequently than every 5 years. The requirement to conduct performance tests every 5 years does not apply to an emissions source for which a continuous emissions monitoring system (CEMS) is used to demonstrate continuous compliance.
NR 463.25(2)(b)
(b) You shall conduct subsequent performance tests to demonstrate compliance with the opacity limit in
s. NR 463.23 (1) (a) 7. for your iron and steel foundry no less frequently than once every 6 months.
NR 463.25(3)
(3) What test methods and other procedures must I use to demonstrate initial compliance with the emission limitations? You shall conduct each performance test that applies to your iron and steel foundry according to the requirements in
s. NR 460.06 (4) (a) and the following conditions, as applicable:
NR 463.25(3)(a)
(a)
Particulate matter. To determine compliance with the applicable emission limit for PM in
s. NR 463.23 (1) (a) 1. to
6. for a metal melting furnace, scrap preheater, pouring station or pouring area, you shall use the following test methods and procedures:
NR 463.25(3)(a)1.a.
a. Method 1 or 1A to select sampling port locations and the number of traverse points in each stack or duct. Sampling sites shall be located at the outlet of the control device, or at the outlet of the emission source if no control device is present, prior to any releases to the atmosphere.
NR 463.25(3)(a)1.b.
b. Method 2, 2A, 2C, 2D, 2F or 2G to determine the volumetric flow rate of the stack gas.
NR 463.25(3)(a)1.c.
c. Method 3, 3A or 3B to determine the dry molecular weight of the stack gas.
NR 463.25(3)(a)1.e.
e. Method 5, 5B, 5D, 5F or 5I, as applicable, to determine the PM concentration. The PM concentration is determined using only the front-half, probe rinse and filter, of the PM catch.
NR 463.25(3)(a)2.
2. Collect a minimum sample volume of 60 dscf of gas during each PM sampling run. A minimum of 3 valid test runs are needed to comprise a performance test.
NR 463.25(3)(a)3.
3. For cupola metal melting furnaces, sample only during times when the cupola is on blast.
NR 463.25(3)(a)4.
4. For electric arc and electric induction metal melting furnaces, sample only when metal is being melted.
NR 463.25(3)(a)5.
5. For scrap preheaters, sample only when scrap is being preheated.
NR 463.25(3)(b)
(b)
Total metal HAP. To determine compliance with the applicable emission limit for total metal HAP in
s. NR 463.23 (1) (a) 1. to
6. for a metal melting furnace, scrap preheater, pouring station, or pouring area, you shall use the following test methods and procedures:
NR 463.25(3)(b)1.a.
a. Method 1 or 1A to select sampling port locations and the number of traverse points in each stack or duct. Sampling sites shall be located at the outlet of the control device, or at the outlet of the emissions source if no control device is present, prior to any releases to the atmosphere.
NR 463.25(3)(b)1.b.
b. Method 2, 2A, 2C, 2D, 2F or 2G to determine the volumetric flow rate of the stack gas.
NR 463.25(3)(b)1.c.
c. Method 3, 3A or 3B to determine the dry molecular weight of the stack gas.
NR 463.25(3)(b)2.
2. Collect a minimum sample volume of 60 dscf of gas during each total metal HAP sampling run. A minimum of 3 valid test runs are needed to comprise a performance test.
NR 463.25(3)(b)3.
3. For cupola metal melting furnaces, sample only during times when the cupola is on blast.
NR 463.25(3)(b)4.
4. For electric arc and electric induction metal melting furnaces, sample only when metal is being melted.
NR 463.25(3)(b)5.
5. For scrap preheaters, sample only when scrap is being preheated.
NR 463.25(3)(c)
(c)
Fugitive emissions. To determine compliance with the opacity limit in
s. NR 463.23 (1) (a) 7. for fugitive emissions from buildings or structures housing any emissions source at the iron and steel foundry, you shall use the following test method and procedures:
NR 463.25(3)(c)2.
2. Conduct each test such that the opacity observations overlap with the PM performance tests.
NR 463.25(3)(d)
(d)
Volatile organic HAP emissions from cupola furnaces and scrap preheaters. To determine compliance with the applicable VOHAP emissions limit in
s. NR 463.23 (1) (a) 8. for a cupola metal melting furnace or in
s. NR 463.23 (1) (a) 9. for a scrap preheater, you shall use the following test methods and procedures:
NR 463.25(3)(d)1.a.
a. Method 1 or 1A to select sampling port locations and the number of traverse points in each stack or duct. Sampling sites shall be located at the outlet of the control device, or at the outlet of the emissions source if no control device is present, prior to any releases to the atmosphere.
NR 463.25(3)(d)1.b.
b. Method 2, 2A, 2C, 2D, 2F or 2G to determine the volumetric flow rate of the stack gas.
NR 463.25(3)(d)1.c.
c. Method 3, 3A or 3B to determine the dry molecular weight of the stack gas.
NR 463.25(3)(d)1.e.
e. Method 18 to determine the VOHAP concentration. Alternatively, you may use Method 25 to determine the concentration of total gaseous nonmethane organics (TGNMO) or Method 25A to determine the concentration of total organic compounds (TOC), using hexane as the calibration gas.
NR 463.25(3)(d)2.
2. Determine the average VOHAP, TGNMO or TOC concentration using a minimum of 3 valid test runs. Each test run shall include a minimum of 60 continuous operating minutes.
NR 463.25(3)(d)3.
3. For a cupola metal melting furnace, correct the measured concentration of VOHAP, TGNMO or TOC for oxygen content in the gas stream using Equation 1:
where:
C
VOHAP is the concentration of VOHAP in ppmv as measured by Method 18 in
40 CFR part 60, Appendix A, incorporated by reference in
s. NR 484.04 (16) or the concentration of TGNMO or TOC in ppmv as hexane as measured by Method 25 or 25A in
40 CFR part 60, Appendix A, incorporated by reference in
s. NR 484.04 (19) or (20)
%O2 is the oxygen concentration in gas stream, percent by volume (dry basis)
NR 463.25(3)(d)4.
4. For a cupola metal melting furnace, measure the combustion zone temperature of the combustion device with the CPMS required in
s. NR 463.26 (1) (d) during each sampling run in 15-minute intervals. Determine and record the 15-minute average of the 3 runs.
NR 463.25(3)(e)
(e)
Volatile organic HAP emissions from automated pallet cooling lines or automated shakeout lines. To determine compliance with the VOHAP emissions limit in
s. NR 463.23 (1) (a) 10. for automated pallet cooling lines or automated shakeout lines you shall use either the procedures in
subds. 1. and
3. or
subds. 2. and
3.
NR 463.25(3)(e)1.
1. To demonstrate compliance by direct measurement of total hydrocarbons, a surrogate for VOHAP, use all of the following procedures:
NR 463.25(3)(e)1.a.
a. Using the VOC CEMS required in
s. NR 463.26 (1) (g), measure and record the concentration of total hydrocarbons, as hexane, for 180 continuous operating minutes. You shall measure emissions at the outlet of the control device, or at the outlet of the emissions source if no control device is present, prior to any releases to the atmosphere.
NR 463.25(3)(e)2.
2. To demonstrate compliance by establishing a site-specific TOC emissions limit that is correlated to the VOHAP emissions limit, use the following procedures:
NR 463.25(3)(e)2.a.
a. Determine the VOHAP concentration for each test run according to the test methods in
40 CFR part 60, Appendix A, incorporated by reference in
s. NR 484.04 (13), that are specified in this subdivision.
1) Method 1 or 1A to select sampling port locations and the number of traverse points in each stack or duct. Sampling sites shall be located at the outlet of the control device, or at the outlet of the emissions source if no control device is present, prior to any releases to the atmosphere.
2) Method 2, 2A, 2C, 2D, 2F or 2G to determine the volumetric flow rate of the stack gas.
3) Method 3, 3A or 3B to determine the dry molecular weight of the stack gas.
4) Method 4 to determine the moisture content of the stack gas.
5) Method 18 to determine the VOHAP concentration. Alternatively, you may use Method 25 to determine the concentration of TGNMO using hexane as the calibration gas.
NR 463.25(3)(e)2.b.
b. Using the CEMS required in
s. NR 463.26 (1) (g), measure and record the concentration of total hydrocarbons, as hexane, during each of the Method 18 or Method 25 sampling runs. You shall measure emissions at the outlet of the control device, or at the outlet of the emissions source if no control device is present, prior to any releases to the atmosphere.
NR 463.25(3)(e)2.c.
c. Calculate the average VOHAP or TGNMO concentration for the source test as the arithmetic average of the concentrations measured for the individual test runs and determine the average concentration of total hydrocarbon, as hexane, as measured by the CEMS during all test runs.
where:
C
VOHAP,avg is the average concentration of VOHAP for the source test in ppmv as measured by Method 18 in
40 CFR part 60, Appendix A, incorporated by reference in
s. NR 484.04 (16), or the average concentration of TGNMO for the source test in ppmv as hexane as measured by Method 25 in
40 CFR part 60, Appendix A, incorporated by reference in
s. NR 484.04 (19)
CCEM is the average concentration of total hydrocarbons in ppmv as hexane as measured using the CEMS during the source test
NR 463.25(3)(e)3.
3. For 2 or more exhaust streams from one or more automated conveyor and pallet cooling lines or automated shakeout lines, compute the flow-weighted average concentration of VOHAP emissions for each combination of exhaust streams using Equation 3:
where:
