NR 465.48(7)(a)5.5. Methods for determining gas volumetric flow rate, dry molecular weight and stack gas moisture shall be performed, as applicable, during each test run. NR 465.48(7)(b)(b) Measure total gaseous organic mass emissions as carbon at the inlet and outlet of the add-on control device simultaneously, using either Method 25 or 25A in 40 CFR part 60, Appendix A, incorporated by reference in s. NR 484.04 (13). NR 465.48(7)(b)1.1. Use Method 25 if the add-on control device is an oxidizer and you expect the total gaseous organic concentration as carbon to be more than 50 parts per million (ppm) at the control device outlet. NR 465.48(7)(b)2.2. Use Method 25A if the add-on control device is an oxidizer and you expect the total gaseous organic concentration as carbon to be 50 ppm or less at the control device outlet. NR 465.48(7)(c)(c) If 2 or more add-on control devices are used for the same emission stream, then you shall measure emissions at the outlet to the atmosphere of each device. NR 465.48 NoteNote: For example, if one add-on control device is a concentrator with an outlet to the atmosphere for the high-volume dilute stream that has been treated by the concentrator, and a second add-on control device is an oxidizer with an outlet to the atmosphere for the low-volume concentrated stream that is treated with the oxidizer, you shall measure emissions at the outlet of the oxidizer and the high volume dilute stream outlet of the concentrator.
NR 465.48(7)(d)(d) For each test run, determine the total gaseous organic emissions mass flow rates for the inlet and the outlet of the add-on control device, using Equation 1 of this subsection. If there is more than one inlet or outlet to the add-on control device, you shall calculate the total gaseous organic mass flow rate using Equation 1 for each inlet and each outlet and then total all of the inlet emissions and total all of the outlet emissions. (Equation 1)
where:
Mf is the total gaseous organic emissions mass flow rate, kg per hour (h)
Cc is the concentration of organic compounds as carbon in the vent gas, as determined by Method 25 or Method 25A in 40 CFR part 60, Appendix A, incorporated by reference in s. NR 484.04 (13), parts per million by volume (ppmv), dry basis Qsd is the volumetric flow rate of gases entering or exiting the add-on control device, as determined by Method 2, 2A, 2C, 2D, 2F or 2G in 40 CFR part 60, Appendix A, incorporated by reference in s. NR 484.04 (13), dry standard cubic meters/hour (dscm/h) 0.0416 is the conversion factor for molar volume, kg-moles per cubic meter (mol/m3) (at 293 Kelvin (K) and 760 millimeters of mercury (mmHg))
NR 465.48(7)(e)(e) For each test run, determine the add-on control device organic emissions destruction or removal efficiency, using Equation 2: where:
DRE is the organic emissions destruction or removal efficiency of the add-on control device, percent
Mfi is the total gaseous organic emissions mass flow rate at the inlet to the add-on control device, using Equation 1of this subsection, kg /h
Mfo is the total gaseous organic emissions mass flow rate at the outlet of the add-on control device, using Equation 1 of this subsection, kg/h
NR 465.48(7)(f)(f) Determine the emission destruction or removal efficiency of the add-on control device as the average of the efficiencies determined in the 3 test runs and calculated in Equation 2 of this subsection. NR 465.48(8)(8) How do i establish the emission capture system and add-on control device operating limits during the performance test? During the performance test required by sub. (1) and described in subs. (5), (6) and (7), you shall establish the operating limits required by s. NR 465.43 (3) according to this subsection, unless you have received approval for alternative monitoring and operating limits under 40 CFR 63.8(f) as specified in s. NR 465.43 (3). NR 465.48(8)(a)(a) Thermal oxidizers. If your add-on control device is a thermal oxidizer, establish the operating limits according to subds. 1. and 2. NR 465.48(8)(a)1.1. During the performance test, you shall monitor and record the combustion temperature at least once every 15 minutes during each of the 3 test runs. You shall monitor the temperature in the firebox of the thermal oxidizer or immediately downstream of the firebox before any substantial heat exchange occurs. NR 465.48(8)(a)2.2. Use the data collected during the performance test to calculate and record the average combustion temperature maintained during the performance test. This average combustion temperature shall be the minimum operating limit for your thermal oxidizer. NR 465.48(8)(b)(b) Catalytic oxidizers. If your add-on control device is a catalytic oxidizer, establish the operating limits according to either subds. 1. and 2. or subds. 3. and 4. If the source is a magnet wire coating machine, you may use the procedures in section 3.0 in 40 CFR part 63, Subpart MMMM, Appendix A, incorporated by reference in s. NR 484.04 (24g), as an alternative. NR 465.48(8)(b)1.1. During the performance test, you shall monitor and record the temperature just before the catalyst bed and the temperature difference across the catalyst bed at least once every 15 minutes during each of the 3 test runs.