TITLE 40 - PROTECTION OF ENVIRONMENT

CHAPTER I - ENVIRONMENTAL PROTECTION AGENCY

PART 63 - NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES

subpart uuu - NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR PETROLEUM REFINERIES: CATALYTIC CRACKING UNITS, CATALYTIC REFORMING UNITS, AND SULFUR RECOVERY UNITS

Table 40 to Subpart UUU of Part 63 - 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 Must meet these requirements .

emission monitoring system . . . . .

------------------------------------------------------------------------ 1. Continuous opacity monitoring system Performance specification 1 (40 CFR part 60, appendix B).

2. CO continuous emission monitoring Performance specification 4 (40 system. 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.

3. CO continuous emission monitoring Performance specification 4 (40 system used to demonstrate emissions CFR part 60, appendix B); and average under 50 ppm (dry basis). span value of 100 ppm.

4. SO2 continuous emission monitoring Performance specification 2 (40 system for sulfur recovery unit with CFR part 60, appendix B); span oxidation control system or reduction value of 500 ppm SO2; use control system; this monitor must Methods 6 or 6C and 3A or 3B include an O2 monitor for correcting (40 CFR part 60, appendix A) the data for excess air. for certifying O2 monitor; and procedure 1 (40 CFR part 60, appendix F) except relative accuracy test audits are required annually instead of quarterly.

5. Reduced sulfur and O2 continuous Performance specification 5 (40 emission monitoring system for sulfur CFR part 60, appendix B), recovery unit with reduction control except calibration drift system not followed by incineration; specification is 2.5 percent this monitor must include an O2 of the span value instead of 5 monitor for correcting the data for percent; 450 ppm reduced excess air unless exempted. sulfur; use Methods 15 or 15A and 3A or 3B (40 CFR part 60, appendix A) for certifying O2monitor; if Method 3A or 3B yields O2 concentrations below 0.25 percent during the performance evaluation, the O2 concentration can be assumed to be zero and the O2 monitor is not required; and procedure 1 (40 CFR part 60, appendix F), except relative accuracy test audits, are required annually instead of quarterly.

6. Instrument with an air or O2 Performance specification 5 (40 dilution and oxidation system to CFR part 60, appendix B); span convert reduced sulfur to SO2 for value of 375 ppm SO2; use continuously monitoring the Methods 15 or 15A and 3A or 3B concentration of SO2 instead of for certifying O2 monitor; and reduced sulfur monitor and O2 monitor. procedure 1 (40 CFR part 60, appendix F), except relative accuracy test audits, are required annually instead of quarterly.

7. TRS continuous emission monitoring Performance specification 5 (40 system for sulfur recovery unit; this CFR part 60, appendix B).

monitor must include an O2 monitor for correcting the data for excess air.

8. O2 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.

------------------------------------------------------------------------ [67 FR 17773, Apr. 11, 2002, as amended at 70 FR 6942 and 6965, Feb. 9, 2005]