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| 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. |
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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.