40 CFR Appendix Table 4 to Subpart GGG of Part 63 - Monitoring Requirements for Control Devices a
|Control device||Monitoring equipment required||Parameters to be monitored||Frequency|
|All control devices||1. Flow indicator installed at all bypass lines to the atmosphere and equipped with continuous recorder
||1. Presence of flow diverted from the control device to the atmosphere
||Hourly records of whether the flow indicator was operating and whether a diversion was detected at any time during each hour.|
|2. Valves sealed closed with car-seal or lock-and-key configuration||2. Monthly inspections of sealed valves||Monthly.|
|Scrubber||Liquid flow rate or pressure drop mounting device. Also a pH monitor if the scrubber is used to control acid emissions||1. Liquid flow rate into or out of the scrubber or the pressure drop across the scrubber||1. Every 15 minutes.|
|2. pH of effluent scrubber liquid||2. Once a day.|
|Thermal incinerator||Temperature monitoring device installed in firebox or in ductwork immediately downstream of firebox b||Firebox temperature||Every 15 minutes.|
|Catalytic incinerator||Temperature monitoring device installed in gas stream immediately before and after catalyst bed||Temperature difference across catalyst bed||Every 15 minutes.|
|Flare||Heat sensing device installed at the pilot light||Presence of a flame at the pilot light||Every 15 minutes.|
|Boiler or process heater <44 mega watts and vent stream is not mixed with the primary fuel||Temperature monitoring device installed in firebox b||Combustion temperature||Every 15 minutes.|
|Condenser||Temperature monitoring device installed at condenser exit||Condenser exit (product side) temperature||Every 15 minutes.|
|Carbon adsorber (nonregenerative)||None||Operating time since last replacement||N/A.|
|Carbon adsorber (regenerative)||Stream flow monitoring device,
||1. Total regeneration stream mass or volumetric flow during carbon bed regeneration cycle(s)||1. For each regeneration cycle, record the total regeneration stream mass or volumetric flow.|
|Carbon bed temperature monitoring device||2. Temperature of carbon bed after regeneration||2. For each regeneration cycle, record the maximum carbon bed-temperature.|
|3. Temperature of carbon bed within 15 minutes of completing any cooling cycle(s)||3. Within 15 minutes of completing any cooling cycle, record the carbon bed temperature.|
|4. Operating time since end of last regeneration||4. Operating time to be based on worst-case conditions.|
|5. Check for bed poisoning||5. Yearly.|
a As an alternative to the monitoring requirements specified in this table, the owner or operator may use a CEM meeting the requirements of Performance Specifications 8 or 9 of appendix B of part 60 to monitor TOC every 15 minutes.
b Monitor may be installed in the firebox or in the ductwork immediately downstream of the firebox before any substantial heat exchange is encountered.
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