Code of Federal Regulations Title 40. Protection of Environment 40 CFR Pt. 63, Subpt. UUU, Tbl. 9 Table 9 to Subpart UUU of Part 63—Operating Limits for Organic HAP Emissions From Catalytic Cracking Units

1. Subject to the NSPS for carbon monoxide (CO) in 40 CFR 60.103 or 60.102a(b)(4)

Continuous emission monitoring system

Not applicable

Not applicable.

2. Not subject to the NSPS for CO in 40 CFR 60.103 or 60.102a(b)(4)

a. Continuous emission monitoring system.

Not applicable

Not applicable.

b. Continuous parameter monitoring systems.

i. Thermal incinerator

Maintain the daily average combustion zone temperature above the limit established during the performance test; and maintain the daily average oxygen concentration in the vent stream (percent, dry basis) above the limit established during the performance test.

ii. Boiler or process heater with a design heat input capacity under 44 MW or a boiler or process heater in which all vent streams are not introduced into the flame zone.

Maintain the daily average combustion zone temperature above the limit established in the performance test.

iii. Flare

On and after January 30, 2019, the flare must meet the requirements of § 63.670. Prior to January 30, 2019, the flare pilot light must be present at all times and the flare must be operating at all times that emissions may be vented to it, or the flare must meet the requirements of § 63.670.

3. During periods of startup, shutdown or hot standby

Any

Any

Meet the requirements in § 63.1565(a)(5).