Requirements for Installation, Operation, and Maintenance of Continuous Opacity Monitoring Systems and Continuous Emission Monitoring Systems

As stated in § 63.1572(a)(1) and (b)(1), you shall meet each requirement in the following table that applies to you. This type of continuous opacity or emission monitoring system . . . Must meet these requirements . . . 1. Continuous opacity monitoring system Performance specification 1 (40 CFR part 60, appendix B). 2. PM CEMS; this monitor must include an O 2 monitor for correcting the data for excess air The requirements in 40 CFR 60.105a(d). 3. CO continuous emission monitoring system Performance specification 4 (40 CFR part 60, appendix B); span value of 1,000 ppm; and procedure 1 (40 CFR part 60, appendix F) except relative accuracy test audits are required annually instead of quarterly. 4. CO continuous emission monitoring system used to demonstrate emissions average under 50 ppm (dry basis) Performance specification 4 (40 CFR part 60, appendix B); and span value of 100 ppm. 5. SO 2 continuous emission monitoring system for sulfur recovery unit with oxidation control system or reduction control system; this monitor must include an O 2 monitor for correcting the data for excess air Performance specification 2 (40 CFR part 60, appendix B); span value of 500 ppm SO 2 , or if using Equation 1 of 40 CFR 60.102a(f)(1)(i), span value of two times the limit at the highest O 2 concentration; use Methods 6 or 6C (40 CFR part 60, appendix A-4) for certifying the SO 2 monitor and Methods 3A or 3B (40 CFR part 60, appendix A-2) for certifying the O 2 monitor; and procedure 1 (40 CFR part 60, appendix F) except relative accuracy test audits are required annually instead of quarterly. 6. Reduced sulfur and O 2 continuous emission monitoring system for sulfur recovery unit with reduction control system not followed by incineration; this monitor must include an O 2 monitor for correcting the data for excess air unless exempted Performance specification 5 (40 CFR part 60, appendix B), except calibration drift specification is 2.5 percent of the span value instead of 5 percent; span value is 450 ppm reduced sulfur, or if using Equation 1 of 40 CFR 60.102a(f)(1)(i), span value of two times the limit at the highest O 2 concentration; use Methods 15 or 15A (40 CFR part 60, appendix A-5) for certifying the reduced sulfur monitor and Methods 3A or 3B (40 CFR part 60, appendix A-2) for certifying the O 2 monitor; if Method 3A or 3B yields O 2 concentrations below 0.25 percent during the performance evaluation, the O 2 concentration can be assumed to be zero and the O 2 monitor is not required; and procedure 1 (40 CFR part 60, appendix F), except relative accuracy test audits, are required annually instead of quarterly. 7. Instrument with an air or O 2 dilution and oxidation system to convert reduced sulfur to SO 2 for continuously monitoring the concentration of SO 2 instead of reduced sulfur monitor and O 2 monitor Performance specification 5 (40 CFR part 60, appendix B); span value of 375 ppm SO 2 or if using Equation 1 of 40 CFR 60.102a(f)(1)(i), span value of two times the limit at the highest O 2 concentration; use Methods 15 or 15A (40 CFR part 60, appendix A-5) for certifying the reduced sulfur monitor and 3A or 3B (40 CFR part 60, appendix A-2) for certifying the O 2 monitor; and procedure 1 (40 CFR part 60, appendix F), except relative accuracy test audits, are required annually instead of quarterly. 8. TRS continuous emission monitoring system for sulfur recovery unit; this monitor must include an O 2 monitor for correcting the data for excess air Performance specification 5 (40 CFR part 60, appendix B). 9. O 2 monitor for oxygen concentration If necessary due to interferences, locate the oxygen sensor prior to the introduction of any outside gas stream; performance specification 3 (40 CFR part 60, appendix B; and procedure 1 (40 CFR part 60, appendix F), except relative accuracy test audits, are required annually instead of quarterly. [80 FR 75317, Dec. 1, 2015]