NR 465.28(7)(a)3.3. Method 3, 3A or 3B in 40 CFR part 60, Appendix A, incorporated by reference in s. NR 484.04 (13), as appropriate, for gas analysis to determine dry molecular weight. You may also use, as an alternative to Method 3B, the manual method for measuring the oxygen, carbon dioxide and carbon monoxide content of exhaust gas in ANSI/ASME, PTC 19.10-1981, “Flue and Exhaust Gas Analyses”, incorporated by reference in s. NR 484.11 (6). NR 465.28(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 465.28(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), and using the same method for both the inlet and outlet measurements according to the following criteria: NR 465.28(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 465.28(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 465.28(7)(c)(c) If 2 or more add-on control devices are used for the same emission stream, you shall measure emissions at the outlet of each device. NR 465.28 NoteNote: For example, if one add-on control device is a concentrator with an outlet 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 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 465.28(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 8 in this paragraph. 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 8 in this paragraph for each inlet and each outlet and then total all of the inlet emissions and total all of the outlet emissions. (Equation 8)
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, 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, dry standard cubic meters/hour (dscm/h)
0.0416 = conversion factor for molar volume, kg-moles per cubic meter (mol/m3) (at 293 Kelvin (K) and 760 millimeters of mercury (mm Hg))
NR 465.28(7)(e)(e) For each test run, determine the add-on control device organic emissions destruction or removal efficiency, using the following equation: (Equation 9)
where:
DRE is the add-on control device organic emissions destruction or removal efficiency, percent
Mfi is the total gaseous organic emissions mass flow rate at the inlet or inlets to the add-on control device, using Equation 8 in par. (d), kg/h
Mfo is the total gaseous organic emissions mass flow rate at the outlet or outlets of the add-on control device, using Equation 8 in par. (d), kg/h
NR 465.28(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 9 in par. (e). NR 465.28(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) to (7), you shall establish the operating limits required by s. NR 465.23 (3) according to the following requirements, as applicable, unless you have received approval for alternative monitoring and operating limits under s. NR 460.07 (6) as specified in s. NR 465.23 (3): NR 465.28(8)(a)(a) Thermal oxidizers. If your add-on control device is a thermal oxidizer, according to both of the following: NR 465.28(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 465.28(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 is the minimum operating limit for your thermal oxidizer.