NR 664.1033(11)(11) A closed-vent system shall meet any of the following design requirements: NR 664.1033(11)(a)(a) Design a closed-vent system to operate with no detectable emissions, as indicated by an instrument reading of less than 500 ppmv above background determined by the procedure in s. NR 664.1034 (2), and by visual inspections. NR 664.1033(11)(b)(b) Design a closed-vent system to operate at a pressure below atmospheric pressure. Equip the system with at least one pressure gauge or other pressure measurement device that can be read from a readily accessible location to verify that negative pressure is being maintained in the closed-vent system when the control device is operating. NR 664.1033(12)(12) The owner or operator shall monitor and inspect each closed-vent system required to comply with this section to ensure proper operation and maintenance of the closed-vent system by implementing all of the following requirements: NR 664.1033(12)(a)(a) Inspect and monitor each closed-vent system that is used to comply with sub. (11) (a) according to all of the following requirements: NR 664.1033(12)(a)1.1. Conduct an initial leak detection monitoring of the closed-vent system on or before the date that the system becomes subject to this section. Monitor the closed-vent system components and connections using the procedures in s. NR 664.1034 (2) to demonstrate that the closed-vent system operates with no detectable emissions, as indicated by an instrument reading of less than 500 ppmv above background. NR 664.1033(12)(a)2.2. After initial leak detection monitoring required in subd. 1., inspect and monitor the closed-vent system as follows: NR 664.1033(12)(a)2.a.a. Visually inspect closed-vent system joints, seams or other connections that are permanently or semi-permanently sealed (e.g., a welded joint between 2 sections of hard piping or a bolted and gasketed ducting flange) at least once per year to check for defects that could result in air pollutant emissions. Monitor a component or connection using the procedures in s. NR 664.1034 (2) to demonstrate that it operates with no detectable emissions following any time the component is repaired or replaced (e.g., a section of damaged hard piping is replaced with new hard piping) or the connection is unsealed (e.g., a flange is unbolted). NR 664.1033(12)(a)2.b.b. Monitor closed-vent system components or connections other than those specified in subd. 2. a. annually and at other times requested by the department, except as provided for in sub. (15), using the procedures in s. NR 664.1034 (2) to demonstrate that the components or connections operate with no detectable emissions. NR 664.1033(12)(a)3.3. In the event that a defect or leak is detected, repair the defect or leak according to par. (c). NR 664.1033(12)(b)(b) Inspect and monitor each closed-vent system that is used to comply with sub. (11) (b) according to all of the following requirements: NR 664.1033(12)(b)1.1. Visually inspect the closed-vent system to check for defects that could result in air pollutant emissions. Defects include, but are not limited to, visible cracks, holes or gaps in ductwork or piping or loose connections. NR 664.1033(12)(b)2.2. Perform an initial inspection of the closed-vent system on or before the date that the system becomes subject to this section. Thereafter, perform the inspections at least once every year. NR 664.1033(12)(c)1.1. Control detectable emissions, as indicated by visual inspection, or by an instrument reading greater than 500 ppmv above background, as soon as practicable, but not later than 15 calendar days after the emission is detected, except as provided for in subd. 3. NR 664.1033(12)(c)2.2. Make a first attempt at repair no later than 5 calendar days after the emission is detected. NR 664.1033(12)(c)3.3. Delay of repair of a closed-vent system for which leaks have been detected is allowed if the repair is technically infeasible without a process unit shutdown, or if the owner or operator determines that emissions resulting from immediate repair would be greater than the fugitive emissions likely to result from delay of repair. Complete repair of the equipment by the end of the next process unit shutdown. NR 664.1033(13)(13) Operate closed-vent systems and control devices used to comply with this subchapter at all times when emissions may be vented to them. NR 664.1033(14)(14) The owner or operator using a carbon adsorption system to control air pollutant emissions shall document that all carbon that is a hazardous waste and that is removed from the control device is managed in one of the following manners, regardless of the average volatile organic concentration of the carbon: NR 664.1033(14)(a)(a) Regenerated or reactivated in a thermal treatment unit that meets one of the following: NR 664.1033(14)(a)1.1. The owner or operator of the unit has been issued an operating license under ch. NR 670 which implements the requirements of subch. X. NR 664.1033(14)(b)(b) Incinerated in a hazardous waste incinerator for which any of the following conditions has been met: NR 664.1033(14)(b)1.1. The owner or operator has been issued an operating license under ch. NR 670 which implements the requirements of subch. O. NR 664.1033(14)(c)(c) Burned in a boiler or industrial furnace for which any of the following conditions has been met: NR 664.1033(14)(c)2.2. The owner or operator has designed and operates the boiler or industrial furnace according to the interim license requirements of subch. H of ch. NR 666. NR 664.1033(15)(a)(a) Determines that the components of the closed-vent system are unsafe to monitor because monitoring personnel would be exposed to an immediate danger as a consequence of complying with sub. (12) (a) 2. b. NR 664.1033(15)(b)(b) Adheres to a written plan that requires monitoring the closed-vent system components using the procedure in sub. (12) (a) 2. b. as frequently as practicable during safe-to-monitor times. NR 664.1033 HistoryHistory: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06; correction in (14) (a) 2. made under s. 13.92 (4) (b) 7., Stats., Register March 2013 No. 687. NR 664.1034(1)(1) Each owner or operator subject to this subchapter shall comply with the test methods and procedures requirements in this section. NR 664.1034(2)(2) When a closed-vent system is tested for compliance with no detectable emissions, as required in s. NR 664.1033 (12), the test shall comply with all of the following requirements: NR 664.1034(2)(d)2.2. A mixture of methane or n-hexane and air at a concentration of approximately, but less than, 10,000 ppm methane or n-hexane. NR 664.1034(2)(f)(f) Traverse the instrument probe around all potential leak interfaces as close to the interface as possible as described in Method 21 in appendix A of 40 CFR part 60, incorporated by reference in s. NR 660.11. NR 664.1034(2)(g)(g) Compare the arithmetic difference between the maximum concentration indicated by the instrument and the background level with 500 ppm for determining compliance. NR 664.1034(3)(a)(a) Conduct performance tests to determine total organic compound concentrations and mass flow rates entering and exiting control devices and reduce data according to all of the following methods and calculation procedures: NR 664.1034(3)(a)2.2. Method 18 or Method 25A in Appendix A of 40 CFR part 60, incorporated by reference in s. NR 660.11, for organic content. If Method 25A is used, the organic HAP used as the calibration gas shall be the single organic HAP representing the largest percent by volume of the emissions. The use of Method 25A is acceptable if the response from the high-level calibration gas is at least 20 times the standard deviation of the response from the zero calibration gas when the instrument is zeroed on the most sensitive scale. NR 664.1034(3)(a)3.3. Each performance test shall consist of 3 separate runs; conduct each run for at least one hour under the conditions that exist when the hazardous waste management unit is operating at the highest load or capacity level reasonably expected to occur. For the purpose of determining total organic compound concentrations and mass flow rates, average the results of all runs. Compute the average on a time-weighted basis. where:
Eh = Total organic mass flow rate, kg/h
Q2sd = Volumetric flow rate of gases entering or exiting control device, determined by Method 2, dscm/h
n = Number of organic compounds in the vent gas
Ci = Organic concentration in ppm, dry basis, of compound i in the vent gas, determined by Method 18
MWi = Molecular weight of organic compound i in the vent gas, kg/kg-mol
0.0416 = Conversion factor for molar volume, kg-mol/m3 (at 293 K and 760 mm Hg)
10-6 = Conversion from ppm
Eh = (Q)(C)(MW)(0.0416)(10-6)
where:
Eh = Total organic mass flow rate, kg/h
Q = Volumetric flow rate of gases entering or exiting control device, as determined by Method 2, dscm/h;
C = Organic concentration in ppm, dry basis, as determined by Method 25A
MW = Molecular weight of propane, 44
0.0416 = Conversion factor for molar volume, kg-mol/m3 (at 293 K and 760 mm Hg)
10 -6 = Conversion from ppm.
NR 664.1034(3)(a)5.5. Determine the annual total organic emission rate by the following equation: where:
EA = Total organic mass emission rate, kg/y
Eh = Total organic mass flow rate for the process vent, kg/h
H = Total annual hours of operations for the affected unit, h
NR 664.1034(3)(a)6.6. Determine total organic emissions from all affected process vents at the facility by summing the hourly total organic mass emission rates (Eh, determined in subd. 4.) and by summing the annual total organic mass emission rates (EA, determined in subd. 5.) for all affected process vents at the facility. NR 664.1034(3)(b)(b) Record the process information as may be necessary to determine the conditions of the performance tests. Operations during periods of startup, shutdown and malfunction may not constitute representative conditions for the purpose of a performance test. NR 664.1034(3)(c)(c) For an affected facility, provide, or cause to be provided, all of the following performance testing facilities: NR 664.1034(3)(d)(d) For the purpose of making compliance determinations, use the time-weighted average of the results of the 3 runs. In the event that a sample is accidentally lost or conditions occur in which one of the 3 runs must be discontinued because of forced shutdown, failure of an irreplaceable portion of the sample train, extreme meteorological conditions or other circumstances beyond the owner or operator’s control, compliance may, upon the department’s approval, be determined using the average of the results of the 2 other runs.
