Section NR 664.1087 - Standards: closed-vent systems and control devices(1) This section applies to each closed-vent system and control device installed and operated by the owner or operator to control air emissions according to the standards of this subchapter.(2) The closed-vent system shall meet all of the following requirements: (a) The closed-vent system shall route the gases, vapors and fumes emitted from the hazardous waste in the waste management unit to a control device that meets sub. (3).(b) Design and operate the closed-vent system according to s. NR 664.1033(11).(c) In the case when the closed-vent system includes bypass devices that could be used to divert the gas or vapor stream to the atmosphere before entering the control device, equip each bypass device with either a flow indicator as specified in subd. 1. or a seal or locking device as specified in subd. 2. For the purpose of complying with this paragraph, low leg drains, high point bleeds, analyzer vents, open-ended valves or lines, spring loaded pressure relief valves and other fittings used for safety purposes are not bypass devices. 1. If a flow indicator is used to comply with this paragraph, install the indicator at the inlet to the bypass line used to divert gases and vapors from the closed-vent system to the atmosphere at a point upstream of the control device inlet. For this paragraph, a flow indicator means a device which indicates the presence of either gas or vapor flow in the bypass line.2. If a seal or locking device is used to comply with this paragraph, place the device on the mechanism by which the bypass device position is controlled (e.g., valve handle, damper lever) when the bypass device is in the closed position such that the bypass device cannot be opened without breaking the seal or removing the lock. Examples of the devices include, but are not limited to, a car-seal or a lock-and-key configuration valve. Visually inspect the seal or closure mechanism at least once every month to verify that the bypass mechanism is maintained in the closed position.(d) Inspect and monitor the closed-vent system according to s. NR 664.1033(12).(3) The control device shall meet all of the following applicable requirements: (a) The control device shall be one of the following devices: 1. A control device designed and operated to reduce the total organic content of the inlet vapor stream vented to the control device by at least 95% by weight.2. An enclosed combustion device designed and operated according to s. NR 664.1033(3).3. A flare designed and operated according to s. NR 664.1033(4).(b) If using a closed-vent system and control device to comply with this section, comply with all of the following requirements: 1. Periods of planned routine maintenance of the control device, during which the control device does not meet par. (a) 1., 2. or 3., as applicable, may not exceed 240 hours per year. 2. The specifications and requirements in par. (a) 1., 2. and 3. for control devices do not apply during periods of planned routine maintenance. 3. The specifications and requirements in par. (a) 1., 2. and 3. for control devices do not apply during a control device system malfunction. 4. Demonstrate compliance with subd. 1. (i.e., planned routine maintenance of a control device, during which the control device does not meet the specifications of par. (a) 1., 2. or 3., as applicable, may not exceed 240 hours per year) by recording the information specified in s. NR 664.1089(5) (e). 5. Correct control device system malfunctions as soon as practicable after their occurrence in order to minimize excess emissions of air pollutants.6. Operate the closed-vent system such that gases, vapors or fumes are not actively vented to the control device during periods of planned maintenance or control device system malfunction (i.e., periods when the control device is not operating or not operating normally) except in cases when it is necessary to vent the gases, vapors or fumes to avoid an unsafe condition or to implement malfunction corrective actions or planned maintenance actions.(c) If using a carbon adsorption system to comply with par. (a), operate and maintain the control device according to all of the following requirements: 1. Following the initial startup of the control device, replace all activated carbon in the control device with fresh carbon on a regular basis according to s. NR 664.1033(7) or (8).2. Manage all carbon that is hazardous waste and that is removed from the control device according to s. NR 664.1033(14), regardless of the average volatile organic concentration of the carbon.(d) If using a control device other than a thermal vapor incinerator, flare, boiler, process heater, condenser or carbon adsorption system to comply with par. (a), operate and maintain the control device according to s. NR 664.1033(10). (e) Demonstrate that a control device achieves the performance requirements of par. (a) as follows: 1. Demonstrate, using either a performance test in subd. 3. or a design analysis in subd. 4., the performance of each control device except for any of the following: b. A boiler or process heater with a design heat input capacity of 44 megawatts or greater.c. A boiler or process heater into which the vent stream is introduced with the primary fuel.d. A boiler or industrial furnace burning hazardous waste for which the owner or operator has been issued an operating license under ch. NR 670 and has designed and operates the unit according to subch. H of ch. NR 666.e. A boiler or industrial furnace burning hazardous waste which the owner or operator has designed and operates according to the interim license requirements of subch. H of ch. NR 666.2. Demonstrate the performance of each flare according to s. NR 664.1033(5).3. For a performance test conducted to meet subd. 1., use the test methods and procedures in s. NR 664.1034(3) (a) to (d).4. For a design analysis conducted to meet subd. 1., meet the requirements in s. NR 664.1035(2) (d) 3.5. Demonstrate that a carbon adsorption system achieves the performance requirements of par. (a) based on the total quantity of organics vented to the atmosphere from all carbon adsorption system equipment that is used for organic adsorption, organic desorption or carbon regeneration, organic recovery and carbon disposal.(f) If the owner or operator and the department do not agree on a demonstration of control device performance using a design analysis, resolve the disagreement using the results of a performance test performed by the owner or operator according to par. (e) 3. The department may choose to have an authorized representative observe the performance test.(g) Inspect and monitor the closed-vent system and control device according to s. NR 664.1033(6) (b) and (12). Inspect the readings from each monitoring device required by s. NR 664.1033(6) (b) at least once each operating day to check control device operation. Immediately implement any necessary corrective measures to ensure the control device is operated in compliance with this section.Wis. Admin. Code Department of Natural Resources NR 664.1087
CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06.