NR 462.05(6)(d)2.
2. Use a flow sensor with a measurement sensitivity of 2% of the flow rate.
NR 462.05(6)(d)3.
3. Reduce swirling flow or abnormal velocity distributions due to upstream and downstream disturbances.
NR 462.05(6)(e)
(e) If you have an operating limit that requires the use of a pressure measurement device, you shall meet the requirements in
par. (c) and
subds. 1. to
6.
NR 462.05(6)(e)1.
1. Locate the pressure sensor in a position that provides a representative measurement of the pressure.
NR 462.05(6)(e)2.
2. Minimize or eliminate pulsating pressure, vibration and internal and external corrosion.
NR 462.05(6)(e)3.
3. Use a gauge with a minimum tolerance of 1.27 centimeters of water or a transducer with a minimum tolerance of one percent of the pressure range.
NR 462.05(6)(e)5.
5. Using a manometer, check gauge calibration quarterly and transducer calibration monthly.
NR 462.05(6)(e)6.
6. Conduct calibration checks any time the sensor exceeds the manufacturer's specified maximum operating pressure range or install a new pressure sensor.
NR 462.05(6)(f)
(f) If you have an operating limit that requires the use of a pH measurement device, you shall meet the requirements in
par. (c) and
subds. 1. to
3.
NR 462.05(6)(f)1.
1. Locate the pH sensor in a position that provides a representative measurement of scrubber effluent pH.
NR 462.05(6)(f)2.
2. Ensure that the sample is properly mixed and representative of the fluid to be measured.
NR 462.05(6)(f)3.
3. Check the pH meter's calibration on at least 2 points every 8 hours of process operation.
NR 462.05(6)(g)
(g) If you have an operating limit that requires the use of equipment to monitor voltage and secondary current, or total power input, of an electrostatic precipitator (ESP), you shall use voltage and secondary current monitoring equipment to measure voltage and secondary current to the ESP.
NR 462.05(6)(h)
(h) If you have an operating limit that requires the use of equipment to monitor sorbent injection rate, such as a weigh belt, weigh hopper or hopper flow measurement device, you shall meet the requirements in
par. (c) and
subds. 1. to
3.
NR 462.05(6)(h)1.
1. Locate the device in a position that provides a representative measurement of the total sorbent injection rate.
NR 462.05(6)(h)2.
2. Install and calibrate the device in accordance with manufacturer's procedures and specifications.
NR 462.05(6)(h)3.
3. At least annually, calibrate the device in accordance with the manufacturer's procedures and specifications.
NR 462.05(6)(i)
(i) If you elect to use a fabric filter bag leak detection system to comply with the requirements of this chapter, you shall install, calibrate, maintain and continuously operate a bag leak detection system as specified in
subds. 1. to
8.
NR 462.05(6)(i)1.
1. You shall install and operate a bag leak detection system for each exhaust stack of the fabric filter.
NR 462.05(6)(i)2.
2. Each bag leak detection system shall be installed, operated, calibrated and maintained in a manner consistent with the manufacturer's written specifications and recommendations and in accordance with the guidance provided in EPA-454/R-98-015, September 1997, incorporated by reference in
s. NR 484.06 (4) (c).
NR 462.05(6)(i)3.
3. The bag leak detection system shall be certified by the manufacturer to be capable of detecting particulate matter emissions at concentrations of 10 milligrams per actual cubic meter or less.
NR 462.05(6)(i)4.
4. The bag leak detection system sensor shall provide output of relative or absolute particulate matter loadings.
NR 462.05(6)(i)5.
5. The bag leak detection system shall be equipped with a device to continuously record the output signal from the sensor.
NR 462.05(6)(i)6.
6. The bag leak detection system shall be equipped with an alarm system that will sound automatically when an increase in relative particulate matter emissions over a preset level is detected. The alarm shall be located where it is easily heard by plant operating personnel.
NR 462.05(6)(i)7.
7. For positive pressure fabric filter systems that do not duct all compartments or cells to a common stack, a bag leak detection system shall be installed in each baghouse compartment or cell.
NR 462.05(6)(i)8.
8. Where multiple bag leak detectors are required, the system's instrumentation and alarm may be shared among detectors.
NR 462.05(7)
(7) How do I demonstrate initial compliance with the emission limits and work practice standards? NR 462.05(7)(a)(a) You shall demonstrate initial compliance with each emission limit and work practice standard that applies to you by either conducting initial performance tests and establishing operating limits, as applicable, according to
sub. (3) (c) and Tables 5 and 7 of this chapter OR conducting initial fuel analyses to determine emission rates and establishing operating limits, as applicable, according to
sub. (4) (d) and Tables 6 and 8 of this chapter.
NR 462.05(7)(b)
(b) New or reconstructed boilers or process heaters in one of the liquid fuel subcategories that burn only fossil fuels and other gases and do not burn any residual oil shall demonstrate compliance according to
s. NR 462.04 (2) (a).
NR 462.05(7)(c)
(c) If you demonstrate compliance through performance testing, you shall establish each site-specific operating limit in Tables 2 to 4 of this chapter that applies to you according to the requirements in
sub. (3), Table 7 of this chapter, and
subd. 4., as applicable. You shall also conduct fuel analyses according to
sub. (4) and establish maximum fuel pollutant input levels according to
subds. 1. to
3., as applicable.
NR 462.05(7)(c)1.
1. You shall establish the maximum chlorine fuel input (C
input) during the initial performance testing according to the procedures in
subd. 1. a. to
c.
NR 462.05(7)(c)1.a.
a. You shall determine the fuel type or fuel mixture that you could burn in your boiler or process heater that has the highest content of chlorine.
NR 462.05(7)(c)1.b.
b. During the performance testing for HCl, you shall determine the fraction of the total heat input for each fuel type burned (Q
i) based on the fuel mixture that has the highest content of chlorine and the average chlorine concentration of each fuel type burned (C
i).
where:
Cinput is the maximum amount of chlorine entering the boiler or process heater through fuels burned in units of pounds per million Btu
Ci is the arithmetic average concentration of chlorine in fuel type, i, analyzed according to sub. (4), in units of pounds per million Btu
Qi is the fraction of total heat input from fuel type, i, based on the fuel mixture that has the highest content of chlorine. If you do not burn multiple fuel types during the performance testing, it is not necessary to determine the value of this term. Insert a value of “1" for Qi.
n is the number of different fuel types burned in your boiler or process heater for the mixture that has the highest content of chlorine
NR 462.05(7)(c)2.
2. If you choose to comply with the alternative TSM emission limit instead of the particulate matter emission limit, you shall establish the maximum TSM fuel input level (TSM
input) during the initial performance testing according to the procedures in
subd. 2. a. to
c.
NR 462.05(7)(c)2.a.
a. You shall determine the fuel type or fuel mixture that you could burn in your boiler or process heater that has the highest content of TSM.
NR 462.05(7)(c)2.b.
b. During the performance testing for TSM, you shall determine the fraction of total heat input from each fuel burned (Q
i) based on the fuel mixture that has the highest content of total selected metals and the average TSM concentration of each fuel type burned (M
i).
where:
TSMinput is the maximum amount of TSM entering the boiler or process heater through fuels burned, in units of pounds per million Btu
Mi is the arithmetic average concentration of TSM in fuel type, i, analyzed according to sub. (4), in units of pounds per million Btu
Qi is the fraction of total heat input from fuel type, i, based on the fuel mixture that has the highest content of TSM. If you do not burn multiple fuel types during the performance test, it is not necessary to determine the value of this term. Insert a value of “1" for Qi.
n is the number of different fuel types burned in your boiler or process heater for the mixture that has the highest content of TSM
NR 462.05(7)(c)3.
3. You shall establish the maximum mercury fuel input level (Mercury
input) during the initial performance testing using the procedures in
subd. 3. a. to
c.
NR 462.05(7)(c)3.a.
a. You shall determine the fuel type or fuel mixture that you could burn in your boiler or process heater that has the highest content of mercury.
NR 462.05(7)(c)3.b.
b. During the compliance demonstration for mercury, you shall determine the fraction of total heat input for each fuel burned (Q
i) based on the fuel mixture that has the highest content of mercury, and you shall determine the average mercury concentration of each fuel type burned (HGi).
where:
Mercuryinput is the maximum amount of mercury entering the boiler or process heater through fuels burned, in units of pounds per million Btu
HGi is the arithmetic average concentration of mercury in fuel type, i, analyzed according to sub. (4), in units of pounds per million Btu
Qi is the fraction of total heat input from fuel type, i, based on the fuel mixture that has the highest mercury content. If you do not burn multiple fuel types during the performance test, it is not necessary to determine the value of this term. Insert a value of “1" for Qi.
n is the number of different fuel types burned in your boiler or process heater for the mixture that has the highest content of mercury
NR 462.05(7)(c)4.a.
a. For a wet scrubber, you shall establish the minimum scrubber effluent pH, liquid flow rate and pressure drop, as defined in
s. NR 462.02 (32) to
(34), as your operating limits during the 3-run performance test. If you use a wet scrubber and you conduct separate performance tests for particulate matter, HCl and mercury emissions, you shall establish one set of minimum scrubber effluent pH, liquid flow rate and pressure drop operating limits. The minimum scrubber effluent pH operating limit shall be established during the HCl performance test. If you conduct multiple performance tests, you shall set the minimum liquid flow rate and pressure drop operating limits at the highest minimum values established during the performance tests.
NR 462.05(7)(c)4.b.
b. For an electrostatic precipitator, you shall establish the minimum voltage and the minimum secondary current or the minimum total power input, as defined in
s. NR 462.02 (36), as your operating limits during the 3-run performance test.
NR 462.05(7)(c)4.c.
c. For a dry scrubber, you shall establish the minimum sorbent injection rate, as defined in
s. NR 462.02 (35), as your operating limit during the 3-run performance test.
NR 462.05(7)(c)4.d.
d. The operating limit for boilers or process heaters with fabric filters for which you choose to demonstrate continuous compliance through bag leak detection systems is that a bag leak detection system be installed according to the requirements in
sub. (6), and that each fabric filter shall be operated such that the bag leak detection system alarm does not sound more than 5% of the operating time during a 6-month period.
NR 462.05(7)(d)
(d) If you elect to demonstrate compliance with an applicable emission limit through fuel analysis, you shall conduct fuel analyses according to
sub. (4) and follow the procedures in
subds. 1. to
5.
NR 462.05(7)(d)1.
1. If you burn more than one fuel type, you shall determine the fuel mixture you could burn in your boiler or process heater that would result in the maximum emission rates of the pollutants for which you elect to demonstrate compliance through fuel analysis.
NR 462.05(7)(d)2.
2. You shall determine the 90th percentile confidence level fuel pollutant concentration of the composite samples analyzed for each fuel type using the one-sided z-statistic test described in Equation 8.
P90 = mean + (SD x t) (Equation 8)
where:
P90 is the 90th percentile confidence level pollutant concentration, in pounds per million Btu
mean is the arithmetic average of the fuel pollutant concentration in the fuel samples analyzed according to sub. (4), in units of pounds per million Btu
SD is the standard deviation of the pollutant concentration in the fuel samples analyzed according to sub. (4), in units of pounds per million Btu
t is the t distribution critical value for 90th percentile (0.1) probability for the appropriate degrees of freedom (number of samples minus one) as obtained from a Distribution Critical Value Table
NR 462.05(7)(d)3.
3. To demonstrate compliance with the applicable emission limit for HCl, the HCl emission rate that you calculate for your boiler or process heater using Equation 9 shall be less than the applicable emission limit for HCl.
where:
HCl is the HCl emission rate from the boiler or process heater in units of pounds per million Btu
Ci90 is the 90th percentile confidence level concentration of chlorine in fuel type, i, in units of pounds per million Btu as calculated according to Equation 8
Qi is the fraction of total heat input from fuel type, i, based on the fuel mixture that has the highest content of chlorine. If you do not burn multiple fuel types, it is not necessary to determine the value of this term. Insert a value of “1" for Qi.
n is the number of different fuel types burned in your boiler or process heater for the mixture that has the highest content of chlorine
1.028 is the molecular weight ratio of HCl to chlorine
NR 462.05(7)(d)4.
4. To demonstrate compliance with the applicable emission limit for TSM, the TSM emission rate that you calculate for your boiler or process heater using Equation 10 shall be less than the applicable emission limit for TSM.
where:
TSM is the TSM emission rate from the boiler or process heater in units of pounds per million Btu
Mi90 is the 90th percentile confidence level concentration of TSM in fuel, i, in units of pounds per million Btu as calculated according to Equation 8
