| 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 or | 1. Presence of flow diverted from the control device to the atmosphere or | 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 megawatts 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, and | 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.
|