NR 440.705(4)(b)2.a.a. The flow indicator shall be installed at the entrance to any bypass line that could divert the vent stream from being routed to the flare, resulting in its emission to the atmosphere. NR 440.705(4)(b)2.b.b. Where the bypass line valve is secured in the closed position with a car-seal or a lock-and-key type configuration, a flow indicator is not required. A visual inspection of the seal or closure mechanism shall be performed at least once every month to ensure that the valve is maintained in the closed position and the vent stream is not diverted through the bypass line. NR 440.705(4)(c)(c) The owner or operator of an affected facility that uses a boiler or process heater to seek to comply with sub. (3) (a) shall install, calibrate, maintain and operate according to the manufacturer’s specifications the following equipment: NR 440.705(4)(c)1.1. A flow indicator that provides a record of vent stream flow diverted from being routed to the boiler or process heater at least once every 15 minutes for each affected facility, except as provided in subd. 1. b. NR 440.705(4)(c)1.a.a. The flow indicator shall be installed at the entrance to any bypass line that could divert the vent stream from being routed to the boiler or process heater, resulting in its emission to the atmosphere. NR 440.705(4)(c)1.b.b. Where the bypass line valve is secured in the closed position with a car-seal or a lock-and-key type configuration, a flow indicator is not required. A visual inspection of the seal or closure mechanism shall be performed at least once every month to ensure that the valve is maintained in the closed position and the vent stream is not diverted through the bypass line. NR 440.705(4)(c)2.2. A temperature monitoring device in the firebox equipped with a continuous recorder and having an accuracy of ± 1% of the temperature being monitored expressed in degrees Celsius or ± 0.5°C, whichever is greater, for boilers or process heaters of less than 44 MW (150 million Btu/hr) design heat input capacity. Any vent stream introduced with primary fuel into a boiler or process heater is exempt from this requirement. NR 440.705(4)(d)(d) The owner or operator of an affected facility that seeks to demonstrate compliance with the TRE index value limit specified under sub. (3) (c) shall install, calibrate, maintain and operate according to manufacturer’s specifications the following equipment unless alternative monitoring procedures or requirements are approved for that facility by the department: NR 440.705(4)(d)1.1. Where an absorber is the final recovery device in the recovery system: NR 440.705(4)(d)1.a.a. A scrubbing liquid temperature monitoring device having an accuracy of ± 1% of the temperature being monitored expressed in degrees Celsius or ± 0.5°C, whichever is greater, and a specific gravity monitoring device having an accuracy of ± 0.02 specific gravity units, each equipped with a continuous recorder; or NR 440.705(4)(d)1.b.b. An organic monitoring device used to indicate the concentration level of organic compounds exiting the recovery device based on a detection principle such as infrared, photoionization or thermal conductivity, each equipped with a continuous recorder. NR 440.705(4)(d)2.2. Where a condenser is the final recovery device in the recovery system: NR 440.705(4)(d)2.a.a. A product side condenser exit temperature monitoring device equipped with a continuous recorder and having an accuracy of ± 1% of the temperature being monitored expressed in degrees Celsius or ± 0.5°C, whichever is greater; or NR 440.705(4)(d)2.b.b. An organic monitoring device used to indicate the concentration level of organic compounds exiting the recovery device based on a detection principle such as infrared, photoionization or thermal conductivity, each equipped with a continuous recorder. NR 440.705(4)(d)3.3. Where a carbon adsorber is the final recovery device unit in the recovery system: NR 440.705(4)(d)3.a.a. An integrating steam flow monitoring device having an accuracy of ± 10% and a carbon bed temperature monitoring device having an accuracy of ± 1% of the temperature being monitored expressed in degrees Celsius or ±0.5°C, whichever is greater, both equipped with a continuous recorder; or NR 440.705(4)(d)3.b.b. An organic monitoring device used to indicate the concentration level of organic compounds exiting the recovery device based on a detection principle such as infrared, photoionization or thermal conductivity, each equipped with a continuous recorder. NR 440.705(4)(e)(e) An owner or operator of an affected facility seeking to demonstrate compliance with the standards specified under sub. (3) with a control device other than an incinerator, boiler, process heater or flare, or a recovery device other than an absorber, condenser or carbon adsorber, shall provide to the administrator information describing the operation of the control device or recovery device and the process parameters which would indicate proper operation and maintenance of the device. The administrator may request further information and will specify appropriate monitoring procedures or requirements. NR 440.705(5)(a)(a) For the purpose of demonstrating compliance with sub. (3), all affected facilities shall be run at full operating conditions and flow rates during any performance test. NR 440.705(5)(b)(b) The following methods in Appendix A of 40 CFR part 60, incorporated by reference in s. NR 440.17, except as provided under s. NR 440.08 (2), shall be used as reference methods to determine compliance with the emission limit or percent reduction efficiency specified under sub. (3) (a): NR 440.705(5)(b)1.1. Method 1 or 1A, as appropriate, for selection of the sampling sites. The control device inlet sampling site for determination of vent stream molar composition or TOC, less methane and ethane, reduction efficiency shall be prior to the inlet of the control device and after the recovery system. NR 440.705(5)(b)2.2. Method 2, 2A, 2C or 2D, as appropriate, for determination of the gas volumetric flow rates. NR 440.705(5)(b)3.3. The emission rate correction factor, integrated sampling and analysis procedure of Method 3B shall be used to determine the oxygen concentration (%O2d) for the purposes of determining compliance with the 20 ppmv limit. The sampling site shall be the same as that of the TOC samples, and the samples shall be taken during the same time that the TOC samples are taken. The TOC concentration corrected to 3% O2 (Cc) shall be computed using the following equation: where:
Cc is the concentration of TOC corrected to 3% O2, dry basis ppm by volume
CTOC is the concentration of TOC minus methane and ethane, dry basis ppm by volume
%O2d is the concentration of O2, dry basis percent by volume
NR 440.705(5)(b)4.4. Method 18 to determine the concentration of TOC in the control device outlet and the concentration of TOC in the inlet when the reduction efficiency of the control device is to be determined. NR 440.705(5)(b)4.a.a. The minimum sampling time for each run shall be one hour in which either an integrated sample or 4 grab samples shall be taken. If grab sampling is used, then the samples shall be taken at approximately 15-minute intervals. NR 440.705(5)(b)4.b.b. The emission reduction (R) of TOC, minus methane and ethane, shall be determined using the following equation:
where: R is the emission reduction, percent by weight
Ei is the mass rate of TOC entering the control device, kg TOC/hr
Eo is the mass rate of TOC discharged to the atmosphere, kg TOC/hr
NR 440.705(5)(b)4.c.c. The mass rates of TOC (Ei, Eo) shall be computed using the following equations: where:
Cij, Coj is the concentration of sample component “j” of the gas stream at the inlet and outlet of the control device, respectively, dry basis ppm by volume
Mij, Moj is the molecular weight of sample component “j” of the gas stream at the inlet and outlet of the control device, respectively, g/g-mole (lb/lb-mole)
Qi, Qo is the flow rate of gas stream at the inlet and outlet of the control device respectively, dscm/min (dscf/hr)
K2 is a constant, 2.494 × 10-6 (l/ppm) (g-mole/scm) (kg/g) (min/hr), where standard temperature for g-mole/scm is 20°C
NR 440.705(5)(b)4.d.d. The TOC concentration (CTOC) is the sum of the individual components and shall be computed for each run using the following equation: where:
CTOC is the concentration of TOC, minus methane and ethane, dry basis ppm by volume
Cj is the concentration of sample components “j“, dry basis ppm by volume
n is the number of components in the sample
NR 440.705(5)(b)5.a.a. When a boiler or process heater with a design heat input capacity of 44 MW (150 million Btu/hour) or greater is used to seek compliance with sub. (3) (a). NR 440.705(5)(b)5.b.b. When a vent stream is introduced into a boiler or process heater with the primary fuel. NR 440.705(5)(b)5.c.c. The department reserves the option to require testing at such other times as may be required. NR 440.705(5)(b)6.6. For purposes of complying with the 98 weight percent reduction in sub. (3) (a), if the vent stream entering a boiler or process heater with a design capacity less than 44 MW (150 million Btu/hour) is introduced with the combustion air or as secondary fuel, the weight percent reduction of TOC, minus methane and ethane, across the combustion device shall be determined by comparing the TOC, minus methane and ethane, in all combusted vent streams, primary fuels and secondary fuels with the TOC, minus methane and ethane, exiting the combustion device. NR 440.705(5)(d)(d) The following test methods in Appendix A of 40 CFR part 60, incorporated by reference in s. NR 440.17, except as provided under s. NR 440.08 (2), shall be used for determining the net heating value of the gas combusted to determine compliance under sub. (3) (b) and for determining the process vent stream TRE index value to determine compliance under subs. (1) (c) 2. and (3) (c). NR 440.705(5)(d)1.a.a. Method 1 or 1A, as appropriate, for selection of the sampling site. The sampling site for the vent stream flow rate and molar composition determination prescribed in subds. 2. and 3. shall be, except for the situations outlined in subd. 1. b., prior to the inlet of any control device, prior to any postreactor dilution of the stream with air and prior to any postreactor introduction of halogenated compounds into the process vent stream. No traverse site selection method is needed for vents smaller than 4 inches in diameter. NR 440.705(5)(d)1.b.b. If any gas stream other than the reactor vent stream is normally conducted through the final recovery device: 1) The sampling site for vent stream flow rate and molar composition shall be prior to the final recovery device and prior to the point at which any nonreactor stream or stream from a nonaffected reactor process is introduced.
2) The efficiency of the final recovery device is determined by measuring the TOC concentration using Method 18 at the inlet to the final recovery device after the introduction of any vent stream and at the outlet of the final recovery device.
3) This efficiency of the final recovery device shall be applied to the TOC concentration measured prior to the final recovery device and prior to the introduction of any nonreactor stream or stream from a nonaffected reactor process to determine the concentration of TOC in the reactor process vent stream from the final recovery device. This concentration of TOC is then used to perform the calculations outlined in subds. 4. and 5.
NR 440.705(5)(d)2.2. The molar composition of the process vent stream shall be determined as follows: NR 440.705(5)(d)2.a.a. Method 18 to measure the concentration of TOC including those containing halogens. NR 440.705(5)(d)3.3. The volumetric flow rate shall be determined using Method 2, 2A, 2C or 2D as appropriate. NR 440.705(5)(d)4.4. The net heating value of the vent stream shall be calculated using the following equation: where:
HT is the net heating value of the sample, MJ/scm, where the net enthalpy per mole of vent stream is based on combustion at 25°C and 760 mm Hg but the standard temperature for determining the volume corresponding to one mole is 20°C as in the definition of Qs (vent stream flow rate)
K1 is a constant, 1.740 × 10-7 (l/ppm) (g-mole/scm) (MJ/kcal), where standard temperature for (g-mole/scm) is 20°C
Cj is the concentration on a dry basis of compound “j” in ppm as measured for organics by Method 18 and measured for hydrogen and carbon monoxide by ASTM D1946-90 (reapproved 1994), incorporated by reference in s. NR 440.17 (2) (a) 24., as indicated in subd. 2. Hj is the net heat of combustion of compound “j“, kcal/g-mole, based on combustion at 25°C and 760 mm Hg. The heats of combustion of vent stream components would be required to be determined using ASTM D2382-88 or D4809-95, incorporated by reference in s. NR 440.17 (2) (a) 30. and 61., if published values are not available or cannot be calculated Bws is the water vapor content of the vent stream, proportion by volume
NR 440.705(5)(d)5.5. The emission rate of TOC in the vent stream shall be calculated using the following equation: where:
ETOC is the emission rate of TOC in the sample, kg/hr
K2 is a constant, 2.494 × 10-6 (l/ppm) (g-mole/scm) (kg/g) (min/hr), where standard temperature for (g-mole/scm) is 20°C
Cj is the concentration on a dry basis of compound “j” in ppm as measured by Method 18 as indicated in subd. 2.
Mj is the molecular weight of sample “j“, g/g-mole
Qs is the vent stream flow rate (dscm/min) at a temperature of 20°C
NR 440.705(5)(d)6.6. The total vent stream concentration, by volume, of compounds containing halogens (ppmv, by compound) shall be summed from the individual concentrations of compounds containing halogens which were measured by Method 18. NR 440.705(5)(e)(e) For purposes of complying with subs. (1) (c) 2. and (3) (c), the owner or operator of a facility affected by this section shall calculate the TRE index value of the vent stream using the equation for incineration in subd. 1. for halogenated vent streams. The owner or operator of an affected facility with a nonhalogenated vent stream shall determine the TRE index value by calculating values using both the incinerator equation in subd. 1. and the flare equation in subd. 2. and selecting the lower of the 2 values. NR 440.705(5)(e)1.1. The equation for calculating the TRE index value of a vent stream controlled by an incinerator is as follows: NR 440.705(5)(e)1.a.a. Where for a vent stream flow rate (scm/min) at a standard temperature of 20°C that is greater than or equal to 14.2 scm/min: TRE is the TRE index value
Qs is the vent stream flow rate (scm/min) at a standard temperature of 20°C
HT is the vent stream net heating value (MJ/scm), where the net enthalpy per mole of vent stream is based on combustion at 25°C and 760 mm Hg but the standard temperature for determining the volume corresponding to one mole is 20°C as in the definition of Qs
Ys is Qs for all vent stream categories listed in Table 1 except for Category E vent streams where Ys = (Qs ) (HT)/3.6
ETOC is the hourly emissions of TOC reported in kg/hr
a, b, c, d, e and f are coefficients. The set of coefficients that apply to a vent stream can be obtained from Table 1.
NR 440.705(5)(e)1.b.b. For a vent stream flow rate (scm/min) at a standard temperature of 20°C that is less than 14.2 scm/min: TRE is the TRE index value
