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e-CFR data is current as of August 6, 2020

Title 40Chapter ISubchapter CPart 63Subpart HHHHHHH → Appendix

Title 40: Protection of Environment
Subpart HHHHHHH—National Emission Standards for Hazardous Air Pollutant Emissions for Polyvinyl Chloride and Copolymers Production

Table 5 to Subpart HHHHHHH of Part 63—Operating Parameters, Operating Limits and Data Monitoring, Recording and Compliance Frequencies for Process Vents

For these control devices, you must monitor these operating parameters .  .  .Establish the following operating limit during your initial performance
test .  .  .
Monitor, record, and demonstrate continuous compliance using these minimum
Data measurementData recordingData averaging period for compliance
Process Vents
Any Control device
Flow to/from the control deviceN/AContinuousN/ADate and time of flow start and stop.
Thermal Oxidizers
Temperature (in fire box or downstream ductwork prior to heat exchange)Minimum temperatureContinuousEvery 15 minutes3-hour block average.
Temperature differential across catalyst bedMinimum temperature differentialContinuousEvery 15 minutes3-hour block average.
Inlet temperature to catalyst bed and catalyst conditionMinimum inlet temperature and catalyst condition as specified in 63.11940 (b)(3)Continuous for temperature, annual for catalyst conditionEvery 15 minutes for temperature, annual for catalyst condition3-hour block average for temperature, annual for catalyst condition.
Absorbers and Acid Gas Scrubbers
Influent liquid flowMinimum inlet liquid flowContinuousEvery 15 minutes3-hour block average.
Influent liquid flow and gas stream flowMinimum influent liquid flow to gas stream flow ratioContinuousEvery 15 minutes3-hour block average.
Pressure dropMinimum pressure dropContinuousEvery 15 minutes3-hour block average.
Exhaust gas temperatureMaximum exhaust gas temperatureContinuousEvery 15 minutes3-hour block average.
Change in specific gravity of scrubber liquidMinimum change in specific gravityContinuousEvery 15 minutes3-hour block average.
pH of effluent liquidMinimum pHContinuousEvery 15 minutes3-hour block average.
Causticity of effluent liquidMinimum causticityContinuousEvery 15 minutes3-hour block average.
Conductivity of effluent liquidMinimum conductivityContinuousEvery 15 minutes3-hour block average.
Regenerative Adsorber
Regeneration stream flow.Minimum total flow per regeneration cycleContinuousN/ATotal flow for each regeneration cycle.
Adsorber bed temperature.Maximum temperatureContinuously after regeneration and within 15 minutes of completing any temperature regulationEvery 15 minutes after regeneration and within 15 minutes of completing any temperature regulation3-hour block average.
Adsorber bed temperature.Minimum temperatureContinuously during regeneration except during any temperature regulating portion of the regeneration cycleN/AAverage of regeneration cycle.
Vacuum and duratio of regenerationMinimum vacuum and period of time for regenerationContinuousN/AAverage vacuum and duration of regeneration.
Regeneration frequencyMinimum regeneration frequency and durationContinuousN/ADate and time of regeneration start and stop.
Adsorber operation valve sequencing and cycle timeCorrect valve sequencing and minimum cycle timeDailyDailyN/A.
Non-Regenerative Adsorber
Average adsorber bed life.N/ADaily until breakthrough for 3 adsorber bed change-outsN/AN/A.
Outlet VOC concentration of the first adsorber bed in seriesLimits in Table 1 or 2 of this subpartDaily, except monthly (if more than 2 months bed life remaining) or weekly (if more than 2 weeks bed life remaining)N/ADaily, weekly, or monthly.
TemperatureMaximum outlet temperatureContinuousEvery 15 minutes3-hour block average.

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