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Table 7 to Subpart U of Part 63 - Operating Parameters for Which Monitoring Levels Are Required To Be Established for Continuous and Batch Front-End Process Vents and Aggregate Batch Vent Streams

RegSenseCFR RegulationsEnvironmental Protection Agency (EPA)Hazardous Air PollutantsEnvironmentalAir QualityFocus AreaUSAEnglishAir ProgramsCFR Appendix

Table 7 to Subpart U of Part 63—Operating Parameters for Which Monitoring Levels Are Required To Be Established for Continuous and Batch Front-End Process Vents and Aggregate Batch Vent Streams
Control/recovery device Parameters to be monitored Established operating parameter(s)
a 25 to 50 mm (absolute) is a common pressure level obtained by pressure swing absorbers.
b Concentration is measured instead of an operating parameter.
Thermal incinerator Firebox temperature Minimum temperature.
Thermal oxidizers used for vents in chloroprene service Combustion chamber temperature Minimum temperature.
Thermal oxidizers used for vents in chloroprene service Flue gas flow rate Maximum flue gas flow rate.
Catalytic incinerator Temperature upstream and downstream of the catalyst bed Minimum upstream temperature; and minimum temperature difference across the catalyst bed.
Boiler or process heater Firebox temperature Minimum temperature.
Scrubber for halogenated vents pH of scrubber effluent; and scrubber liquid and gas flow rates [§63.489(b)(4)(ii)] Minimum pH; and minimum liquid/gas ratio.
Absorber Exit temperature of the absorbing liquid; and exit specific gravity of the absorbing liquid Maximum temperature; and maximum specific gravity.
Condenser Exit temperature Maximum temperature.
Carbon adsorber Total regeneration steam flow or nitrogen flow, or pressure (gauge or absolute) a during carbon bed regeneration cycle; and temperature of the carbon bed after regeneration (and within 15 minutes of completing any cooling cycle(s)) Maximum flow or pressure; and maximum temperature.
Sorbent injection Sorbent injection rate Minimum injection rate.
Sorbent injection Carrier gas flow rate Minimum carrier gas flow rate.
Other devices (or as an alternate to the above) b HAP concentration level or reading at outlet of device Maximum HAP concentration or reading.

[65 FR 38093, June 19, 2000; 89 FR 43067, May 16, 2024]

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