TVHuncaptured is the total mass of TVH that is not captured by the emission capture system and that exits from the temporary total enclosure or building enclosure during the capture efficiency test run, kg

NR 465.28(6)(b)1.f.f. Determine the capture efficiency of the emission capture system as the average of the capture efficiencies measured in the 3 test runs.

NR 465.28(6)(b)2.2. ‘Gas-to-gas protocol using a temporary total enclosure or a building enclosure.’ The gas-to-gas protocol compares the mass of TVH emissions captured by the emission capture system to the mass of TVH emissions not captured. You shall use the following procedures to measure emission capture system efficiency using the gas-to-gas protocol.

NR 465.28(6)(b)2.a.a. Either use a building enclosure or construct an enclosure around the coating operation where coatings, thinners and cleaning materials are applied and all areas where emissions from these applied coatings and materials subsequently occur such as flash-off, curing and drying areas. The areas of the coating operation where capture devices collect emissions generated by the coating operation for routing to an add-on control device, such as the entrance and exit areas of an oven or a spray booth, shall also be inside the enclosure. The enclosure shall meet the applicable definition of a temporary total enclosure or building enclosure in Method 204 in 40 CFR part 51, Appendix M, incorporated by reference in s. NR 484.04 (9).

NR 465.28(6)(b)2.b.b. Use Method 204B or 204C in 40 CFR part 51, Appendix M, incorporated by reference in s. NR 484.04 (9), to measure the total mass, kg, of TVH emissions captured by the emission capture system during each capture efficiency test run as measured at the inlet to the add-on control device. To make the measurement, substitute TVH for each occurrence of the term VOC in the methods. The sampling points for the Method 204B or 204C measurement shall be upstream from the add-on control device and shall represent total emissions routed from the capture system and entering the add-on control device. If multiple emission streams from the capture system enter the add-on control device without a single common duct, the emissions entering the add-on control device shall be simultaneously measured in each duct, and the total emissions entering the add-on control device shall be determined.

NR 465.28(6)(b)2.c.c. Use Method 204D or 204E in 40 CFR part 51, Appendix M, incorporated by reference in s. NR 484.04 (9), to measure the total mass, kg, of TVH emissions that are not captured by the emission capture system; they are measured as they exit the temporary total enclosure or building enclosure during each capture efficiency test run. To make the measurement, substitute TVH for each occurrence of the term VOC in the methods. Use Method 204D if the enclosure is a temporary total enclosure. Use Method 204E if the enclosure is a building enclosure. During the capture efficiency measurement, all organic compound emitting operations inside the building enclosure other than the coating operation for which capture efficiency is being determined shall be shut down, but all fans and blowers shall be operating normally.

NR 465.28(6)(b)2.d.d. For each capture efficiency test run, determine the percent capture efficiency of the emission capture system, using the following equation:

TVHcaptured is the total mass of TVH captured by the emission capture system as measured at the inlet to the add-on control device during the emission capture efficiency test run, kg

NR 465.28(6)(b)2.e.e. Determine the capture efficiency of the emission capture system as the average of the capture efficiencies measured in the 3 test runs.

NR 465.28(6)(b)3.3. ‘Alternative capture efficiency protocol.’ As an alternative to the procedures specified in subds. 1. and 2., you may determine capture efficiency using any other capture efficiency protocol and test methods that satisfy the criteria of either the DQO or LCL approach as described in 40 CFR part 63, Subpart KK, Appendix A, incorporated by reference in s. NR 484.04 (24).

NR 465.28(7)(a)1.1. Method 1 or 1A in 40 CFR part 60, Appendix A, incorporated by reference in s. NR 484.04 (13), as appropriate, to select sampling sites and velocity traverse points.

NR 465.28(7)(a)2.2. Method 2, 2A, 2C, 2D, 2F or 2G in 40 CFR part 60, Appendix A, incorporated by reference in s. NR 484.04 (13), as appropriate, to measure gas volumetric flow rate.

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)(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.