n is the number of different coatings, thinners and other additives, and cleaning materials used in the coating operation during the capture efficiency test run
NR 465.48(6)(c)4.4. 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 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. NR 465.48(6)(c)4.b.b. Use Method 204E in 40 CFR part 51, Appendix M, incorporated by reference in s. NR 484.04 (9), 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 465.48(6)(c)5.5. For each capture efficiency test run, determine the percent capture efficiency of the emission capture system using Equation 2: (Equation 2)
where:
CE is the capture efficiency of the emission capture system vented to the add-on control device, percent
TVHused is the total mass of TVH liquid input used in the coating operation during the capture efficiency test run, kg (lb)
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 (lb)
NR 465.48(6)(c)6.6. Determine the capture efficiency of the emission capture system as the average of the capture efficiencies measured in the 3 test runs. NR 465.48(6)(d)(d) 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 a temporary total enclosure or a building enclosure and the procedures in subds. 1. to 5. to measure emission capture system efficiency when using the gas-to-gas protocol. NR 465.48(6)(d)1.1. Either use a building enclosure or construct an enclosure around the coating operation where coatings, thinners and other additives, 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 465.48(6)(d)2.2. 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 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. NR 465.48(6)(d)2.a.a. 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. NR 465.48(6)(d)2.b.b. If multiple emission streams from the capture system enter the add-on control device without a single common duct, then 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 465.48(6)(d)3.3. 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 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. NR 465.48(6)(d)3.b.b. Use Method 204E in 40 CFR part 51, Appendix M, incorporated by reference in s. NR 484.04 (9), 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 465.48(6)(d)4.4. For each capture efficiency test run, determine the percent capture efficiency of the emission capture system using Equation 3: (Equation 3)
where:
CE is the capture efficiency of the emission capture system vented to the add-on control device, percent
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 (lb)
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 (lb)
NR 465.48(6)(d)5.5. Determine the capture efficiency of the emission capture system as the average of the capture efficiencies measured in the 3 test runs. NR 465.48(6)(e)(e) Alternative capture efficiency protocol. As an alternative to the procedures specified in pars. (c) and (d) and subject to the approval of the department, 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).