NR 463.26(2)(d)3.
3. For a cryogenic temperature range, use a temperature sensor with a minimum tolerance of 2.2
°C or 2% of the temperature value, whichever is larger.
NR 463.26(2)(d)4.
4. Shield the temperature sensor system from electromagnetic interference and chemical contaminants.
NR 463.26(2)(d)5.
5. If you use a chart recorder, it shall have a sensitivity in the minor division of at least 20
°F.
NR 463.26(2)(d)6.
6. Perform an electronic calibration at least semiannually according to the procedures in the manufacturer's owners manual. Following the electronic calibration, conduct a temperature sensor validation check, in which a second or redundant temperature sensor placed nearby the process temperature sensor shall yield a reading within 16.7
°C of the process temperature sensor's reading.
NR 463.26(2)(d)7.
7. Conduct calibration and validation checks any time the sensor indicates a temperature that exceeds the manufacturer's specified maximum operating temperature range, or install a new temperature sensor.
NR 463.26(2)(d)8.
8. At least monthly, inspect all components for integrity and all electrical connections for continuity, oxidation and galvanic corrosion.
NR 463.26(2)(e)
(e) For each wet acid scrubber subject to the operating limits in
s. NR 463.23 (1) (b) 5., you shall install and maintain CPMS to measure and record the scrubbing liquid flow rate according to the requirements in
par. (c) 2. and do either of the following:
NR 463.26(2)(e)1.
1. Install and maintain CPMS to measure and record the pH of the scrubber blowdown according to all of the following requirements:
NR 463.26(2)(e)1.a.
a. Locate the pH sensor in a position that provides a representative measurement of the pH and that minimizes or eliminates internal and external corrosion.
NR 463.26(2)(e)1.b.
b. Use a gauge with a minimum measurement sensitivity of 0.1 pH unit or a transducer with a minimum measurement sensitivity of 5% of the pH range.
NR 463.26(2)(e)1.c.
c. Check gauge calibration quarterly or transducer calibration monthly using a manual pH gauge.
NR 463.26(2)(e)1.d.
d. At least monthly, inspect all components for integrity, all electrical connections for continuity and all mechanical connections for leakage.
NR 463.26(2)(e)2.
2. Extract a sample for analysis by a pH meter that has all of the following:
NR 463.26(2)(f)
(f) You shall operate each CPMS used to meet the requirements of this subchapter according to all of the following requirements:
NR 463.26(2)(f)1.
1. Each CPMS shall complete a minimum of one cycle of operation for each successive 15-minute period. You shall have a minimum of 3 of the required 4 data points to constitute a valid hour of data.
NR 463.26(2)(f)2.
2. Each CPMS shall have valid hourly data for 100% of every averaging period.
NR 463.26(2)(f)3.
3. Each CPMS shall calculate and record the hourly average of all recorded readings and the 3-hour average of all recorded readings.
NR 463.26(2)(g)
(g) For each automated conveyor and pallet cooling line and automated shakeout line at a new iron and steel foundry subject to the VOHAP emission limit in
s. NR 463.23 (1) (a) 10., you shall install, operate and maintain a CEMS to measure and record the concentration of VOHAP emissions according to all of the following requirements:
NR 463.26(2)(g)3.
3. As specified in
s. NR 460.07 (3) (d) 2., each CEMS shall complete a minimum of one cycle of operation, which includes sampling, analyzing and data recording, for each successive 15-minute period.
NR 463.26(2)(g)5.
5. Each CEMS shall calculate and record the 3-hour average emissions using all the hourly averages collected for periods during which the CEMS is not out-of-control.
NR 463.26(2)(g)6.
6. You shall record the results of each inspection, calibration and validation check required under this paragraph.
NR 463.26(3)
(3) How do I monitor and collect data to demonstrate continuous compliance? NR 463.26(3)(a)(a) Except for monitoring malfunctions, associated repairs and required quality assurance or control activities, including, as applicable, calibration checks and required zero and span adjustments, you shall monitor continuously or collect data at all required intervals any time a source of emissions is operating.
NR 463.26(3)(b)
(b) You may not use data recorded during monitoring malfunctions, associated repairs and required quality assurance or control activities in data averages and calculations used to report emissions or operating levels or to fulfill a minimum data availability requirement, if applicable. You shall use all the data collected during all other periods in assessing compliance.
NR 463.26(4)
(4) How do I demonstrate continuous compliance with the emission limitations that apply to me? NR 463.26(4)(a)(a) You shall demonstrate continuous compliance by meeting the following requirements, as applicable:
NR 463.26(4)(a)1.
1. For each electric arc metal melting furnace, electric induction metal melting furnace or scrap preheater at an existing iron and steel foundry, you shall do one of the following:
NR 463.26(4)(a)1.a.
a. Maintain the average PM concentration in the exhaust stream at or below 0.005 gr/dscf.
NR 463.26(4)(a)1.b.
b. Maintain the average total metal HAP concentration in the exhaust stream at or below 0.0004 gr/dscf.
NR 463.26(4)(a)2.
2. For each cupola metal melting furnace at an existing iron and steel foundry, you shall do one of the following:
NR 463.26(4)(a)2.a.
a. Maintain the average PM concentration in the exhaust stream at or below 0.006 gr/dscf.
NR 463.26(4)(a)2.b.
b. Maintain the average total metal HAP concentration in the exhaust stream at or below 0.0005 gr/dscf.
NR 463.26(4)(a)3.
3. For each cupola metal melting furnace or electric arc metal melting furnace at new iron and steel foundry, you shall do one of the following:
NR 463.26(4)(a)3.a.
a. Maintain the average PM concentration in the exhaust stream at or below 0.002 gr/dscf.
NR 463.26(4)(a)3.b.
b. Maintain the average total metal HAP concentration in the exhaust stream at or below 0.0002 gr/dscf.
NR 463.26(4)(a)4.
4. For each electric induction metal melting furnace or scrap preheater at a new iron and steel foundry, you shall do one of the following:
NR 463.26(4)(a)4.a.
a. Maintain the average PM concentration in the exhaust stream at or below 0.001 gr/dscf.
NR 463.26(4)(a)4.b.
b. Maintain the average total metal HAP concentration in the exhaust stream at or below 0.00008 gr/dscf.
NR 463.26(4)(a)5.
5. For each pouring station at an existing iron and steel foundry, you shall do one of the following:
NR 463.26(4)(a)5.a.
a. Maintain the average PM concentration in the exhaust stream at or below 0.010 gr/dscf.
NR 463.26(4)(a)5.b.
b. Maintain the average total metal HAP concentration in the exhaust stream at or below 0.0008 gr/dscf.
NR 463.26(4)(a)6.
6. For each pouring area or pouring station at a new iron and steel foundry, you shall do one of the following:
NR 463.26(4)(a)6.a.
a. Maintain the average PM concentration in the exhaust stream at or below 0.002 gr/dscf.
NR 463.26(4)(a)6.b.
b. Maintain the average total metal HAP concentration in the exhaust stream at or below 0.0002 gr/dscf.
NR 463.26(4)(a)7.
7. For each building or structure housing any emission source at the iron and steel foundry, you shall maintain the opacity of any fugitive emissions discharged to the atmosphere at or below 20% opacity (6-minute average), except for one 6-minute average per hour that does not exceed 27% opacity.
NR 463.26(4)(a)8.
8. For each cupola metal melting furnace at a new or existing iron and steel foundry, you shall maintain the average VOHAP concentration in the exhaust stream at or below 20 ppmv corrected to 10% oxygen.
NR 463.26(4)(a)9.
9. For each scrap preheater at an existing iron and steel foundry that does not comply with the work practice standard in
s. NR 463.23 (2) (e) 1. or
2. and for each scrap preheater at a new iron and steel foundry that does not comply with the work practice standard in
s. NR 463.23 (2) (f), you shall maintain the average VOHAP concentration in the exhaust stream at or below 20 ppmv.
NR 463.26(4)(a)10.
10. For one or more automated conveyor and pallet cooling lines or automated shakeout lines that use a sand mold system at a new iron and steel foundry, you shall do all of the following:
NR 463.26(4)(a)10.a.
a. Maintain the 3-hour flow-weighted average VOHAP concentration in the exhaust stream at or below 20 ppmv.
NR 463.26(4)(a)10.b.
b. Inspect and maintain each CEMS according to the requirements of
sub. (2) (g) and record all information needed to document conformance with these requirements.
NR 463.26(4)(a)10.c.
c. Collect and reduce monitoring data according to the requirements of
sub. (2) (g) and record all information needed to document conformance with these requirements.
NR 463.26(4)(a)11.
11. For each TEA cold box mold or core making line at a new or existing iron and steel foundry, you shall maintain a 99% reduction in the VOHAP concentration in the exhaust stream or maintain the average VOHAP concentration in the exhaust stream at or below 1 ppmv.
NR 463.26(4)(a)12.
12. You shall conduct subsequent performance tests at least every 5 years for each emission source subject to an emission limit for PM, total metal HAP, VOHAP or TEA in
s. NR 463.23 (1) (a) and subsequent performance tests at least every 6 months for each building or structure subject to the opacity limit in
s. NR 463.23 (1) (a) 7.
NR 463.26(4)(b)
(b) You shall demonstrate continuous compliance for each capture system subject to an operating limit in
s. NR 463.23 (1) (b) 1. by doing both of the following:
NR 463.26(4)(b)1.
1. Operate the capture system at or above the lowest values or settings established for the operating limits in your operation and maintenance plan.
NR 463.26(4)(b)2.
2. Monitor the capture system according to the requirements in
sub. (1) (a) and collect, reduce and record the monitoring data for each of the operating limit parameters according to the applicable requirements in this subchapter.
NR 463.26(4)(c)
(c) You shall demonstrate continuous compliance for each baghouse equipped with a bag leak detection system doing both of the following:
NR 463.26(4)(c)1.
1. Maintain records of the times the bag leak detection system alarm sounded, and for each valid alarm, the time you initiated corrective action, the corrective action taken and the date on which corrective action was completed.
NR 463.26(4)(c)2.
2. Inspect and maintain each baghouse according to the requirements of
sub. (1) (b) 1. to
8., and record all information needed to document conformance with these requirements.
NR 463.26(4)(d)
(d) You shall demonstrate continuous compliance for each wet scrubber that is subject to the operating limits in
s. NR 463.23 (1) (b) 2., by doing all of the following:
NR 463.26(4)(d)1.
1. Maintaining the 3-hour average pressure drop and 3-hour average scrubber water flow rate at levels no lower than those established during the initial or subsequent performance test.
NR 463.26(4)(d)2.
2. Inspecting and maintaining each CPMS according to the requirements of
sub. (2) (c) and recording all information needed to document conformance with the requirements.
NR 463.26(4)(d)3.
3. Collecting and reducing monitoring data for pressure drop and scrubber water flow rate according to the requirements of
sub. (2) (f) and recording all information needed to document conformance with the requirements.
NR 463.26(4)(e)
(e) You shall demonstrate continuous compliance for each combustion device that is subject to the operating limit in
s. NR 463.23 (1) (b) 3., by doing all of the following:
NR 463.26(4)(e)1.
1. Maintaining the 15-minute average combustion zone temperature at a level no lower than 1,300
°F.
NR 463.26(4)(e)2.
2. Inspecting and maintaining each CPMS according to the requirements of
sub. (2) (d) and recording all information needed to document conformance with the requirements.
NR 463.26(4)(e)3.
3. Collecting and reducing monitoring data for combustion zone temperature according to the requirements of
sub. (2) (f) and recording all information needed to document conformance with the requirements.
NR 463.26(4)(f)
(f) You shall demonstrate continuous compliance for each combustion device that is subject to the operating limit in
s. NR 463.23 (1) (b) 4., by doing all of the following:
NR 463.26(4)(f)1.
1. Maintaining the 3-hour average combustion zone temperature at a level no lower than that established during the initial or subsequent performance test.
NR 463.26(4)(f)2.
2. Inspecting and maintaining each CPMS according to the requirements of
sub. (2) (d) and recording all information needed to document conformance with these requirements.
NR 463.26(4)(f)3.
3. Collecting and reducing monitoring data for combustion zone temperature according to the requirements of
sub. (2) (f) and recording all information needed to document conformance with these requirements.
NR 463.26(4)(g)
(g) You shall demonstrate continuous compliance for each acid wet scrubber subject to the operating limits in
s. NR 463.23 (1) (b) 5., by doing all of the following:
NR 463.26(4)(g)1.
1. Maintaining the 3-hour average scrubbing liquid flow rate at a level no lower than the level established during the initial or subsequent performance test.
NR 463.26(4)(g)2.
2. Maintaining the 3-hour average pH of the scrubber blowdown at a level no higher than 4.5, if measured by a CPMS, or maintaining the pH level of the scrubber blowdown during each production shift no higher than 4.5.
NR 463.26(4)(g)3.
3. Inspecting and maintaining each CPMS according to the requirements of
sub. (2) (e) and recording all information needed to document conformance with the requirements.
NR 463.26(4)(g)4.
4. Collecting and reducing monitoring data for scrubbing liquid flow rate and scrubber blowdown pH according to the requirements of
sub. (2) (f) and recording all information needed to document conformance with the requirements. If the pH level of the scrubber blowdown is measured by a probe and meter, you shall demonstrate continuous compliance by maintaining records that document the date, time and results of each sample taken for each production shift.
NR 463.26(5)
(5) How do I demonstrate continuous compliance with the work practice standards that apply to me? NR 463.26(5)(a)(a) You shall maintain records that document continuous compliance with the certification requirements in
s. NR 463.23 (2) (b) or with the procedures in your scrap selection and inspection plan required in
s. NR 463.23 (2) (c). Your records documenting compliance with the scrap selection and inspection plan shall include a copy kept onsite of the procedures used by the scrap supplier for either removing accessible mercury switches or for purchasing automobile bodies that have had mercury switches removed, as applicable.
NR 463.26(5)(b)
(b) You shall keep records of the chemical composition of all catalyst binder formulations applied in each furan warm box mold or core making line at a new or existing iron and steel foundry to demonstrate continuous compliance with the requirements in
s. NR 463.23 (2) (d).
NR 463.26(5)(c)
(c) For a scrap preheater at an existing iron and steel foundry, you shall operate and maintain each gas-fired preheater so that the flame directly contacts the scrap charged to demonstrate continuous compliance with the requirement
s. NR 463.23 (2) (e) 1. If you choose to meet the work practice standard in
s. NR 463.23 (2) (e) 2., you shall keep records to document that the scrap preheater charges only material that is subject to and in compliance with the scrap certification requirements in
s. NR 463.23 (2) (b).
NR 463.26(5)(d)
(d) For a scrap preheater at a new iron and steel foundry, you shall keep records to document that each scrap preheater charges only material that is subject to and in compliance with the scrap certification requirements in
s. NR 463.23 (2) (b) to demonstrate continuous compliance with the requirement in
s. NR 463.23 (2) (f).
NR 463.26(6)
(6) How do I demonstrate continuous compliance with the operation and maintenance requirements that apply to me? NR 463.26(6)(a)(a) For each capture system and control device for an emission source subject to an emission limit in
s. NR 463.23 (1) (a), you shall demonstrate continuous compliance with the operation and maintenance requirements of
s. NR 463.23 (3) by doing all of the following:
