Other measurements and conditions. Ammonia slip is a concern with SCR systems, and therefore, ammonia will be measured using CTM-038, based on 40 CFR 63 Appendix A, Test Method 320 Measurement of Vapor Phase Organic and Inorganic Emissions by Extractive Fourier Transform Infrared (FTIR) Spectroscopy. This will provide an average ammonia slip over the test cycle. Technologies that may produce secondary pollutants or have other secondary effects must include measurement of those pollutants in the ETV test. Carbon dioxide (CO2) emissions, while not primary ETV test pollutants, must be measured using instrumentation or estimated from a carbon balance from the fuel usage. ETV must include the appropriate measurements for technologies that require other specific operating conditions or affect emissions over only a limited range of a particular pollutant. For example, because the long-term operation of DECs and PM filters is affected by the soluble organic fraction (SOF) of the PM, SOF must be measured during ETV testing for filters and similar technologies. The details of these non-critical measurements and their QA goals will be part of the test/QA plan.
Other measurements and conditions. Ammonia slip is a concern with SCR systems, and therefore, ammonia will be measured using CTM-038, based on 40 CFR 63 Appendix A, Test Method 320 Measurement of Vapor Phase Organic and
Other measurements and conditions. ETV of technologies that may produce secondary pollutants or have other secondary effects must include measurement of those pollutants in the ETV test. CO2 emissions, while not primary, must be measured using instrumentation and/or estimated from a carbon balance from the fuel usage. ETV must include the appropriate measurements for technologies that require other specific operating conditions or affect emissions over only a limited range of a particular pollutant. For example, because the long-term operation of DECs and PM filters is affected by the soluble organic fraction (SOF) of the PM, SOF must be measured during ETV testing for these and similar technologies. The details of these non-critical measurements and their QA goals will be part of the test/QA plan.
