NR 440.675(5)(e)3.3. The molar composition of the process vent stream shall be determined as follows: NR 440.675(5)(e)3.a.a. Method 18 to measure the concentration of TOC including those containing halogens. NR 440.675(5)(e)4.4. The volumetric flow rate shall be determined using Method 2, 2A, 2C or 2D, as appropriate. NR 440.675(5)(e)5.5. The net heating value of the vent stream shall be calculated using the following equation: where:
HT is the net heating value of the sample, MJ/scm (Btu/scf), where the net enthalpy per mole of vent stream is based on combustion at 25°C and 760 mm Hg (77°F and 30 in Hg), but the standard temperature for determining the volume corresponding to one mole is 20°C (68°F)
K1 is a constant, 1.740 x 10-7 (1/ppm)(g-mole/scm)(MJ/kcal) for metric units where standard temperature for (g-mole/scm) is 20°C, and 1.03 x 10-11 (1/ppm)(lb-mole/scf)(Btu/kcal) for English units where standard temperature for (lb-mole/scf) is 68°F
Cj is the concentration on a wet basis of compound j in ppm, as measured for organics by Method 18 and measured for hydrogen and carbon monoxide by ASTM D1946-90 (reapproved 1994), incorporated by reference in s. NR 440.17 (2) (a) 24., as indicated in subd. 3. Hj is the net heat of combustion of compound j, kcal/g-mole (kcal/lb-mole), based on combustion at 25°C and 760 mm Hg (77°F and 30 in Hg). The heats of combustion of vent stream components would be required to be determined using ASTM D2382-88 or D4809-95, incorporated by reference as specified in s. NR 440.17 (2) (a) 30. and 61., if published values are not available or cannot be calculated NR 440.675(5)(e)6.6. The emission rate of TOC in the process vent stream shall be calculated using the following equation: where:
ETOC is the emission rate of TOC in the sample, kg/hr (lb/hr)
K2 is the constant, 2.494 ×10-6 (1/ppm) (g-mole/scm) (kg/g) (min/hr) for metric units, where standard temperature for (g-mole/scm) is 20°C, and 1.557 x 10-7 (1/ppm)(lb-mole/scf)(min/hr) for English units, where standard temperature for (lb-mole/scf) is 68°F
Cj is the concentration on a wet basis of compound j in ppm as measured by Method 18 as indicated in subd. 3.
Mj is the molecular weight of sample j, g/g-mole (lb/lb-mole)
Qs is the vent stream flow rate (scm/min) (scf/hr) at a standard temperature of 20°C (68°F)
NR 440.675(5)(e)7.7. The total process vent stream concentration (by volume) of compounds containing halogens (ppmv, by compound) shall be summed from the individual concentrations of compounds containing halogens which were measured by Method 18. NR 440.675(5)(f)(f) For purposes of complying with sub. (3) (c), the owner or operator of a facility affected by this section shall calculate the TRE index value of the vent stream using the equation for incineration in subd. 1. for halogenated vent streams. The owner or operator of an affected facility with a nonhalogenated vent stream shall determine the TRE index value by calculating values using both the incinerator equation in subd. 1. and the flare equation in subd. 2. and selecting the lower of the 2 values. NR 440.675(5)(f)1.1. The TRE index value of the vent stream controlled by an incinerator shall be calculated using the following equation: NR 440.675(5)(f)1.a.a. Where for a vent stream flow rate that is greater than or equal to 14.2 scm/min (501 scf/min) at a standard temperature of 20°C (68°F): TRE is the TRE index value
Qs is the vent stream flow rate scm/min (scf/min), at a standard temperature of 20°C (68°F)
HT is the vent stream net heating value , MJ/scm (Btu/scf), where the net enthalpy per mole of vent stream is based on combustion at 25°C and 760 mm Hg (68°F and 30 in Hg), but the standard temperature for determining the volume corresponding to one mole is 20°C (68°F), as in the definition of Qs
Ys = Qs for all vent stream categories listed in Table 1 except for Category E vent streams where Ys = (Qs) (HT)/3.6 for metric units and Ys = (Qs)(HT)/97 for English units
ETOC is the hourly emissions of TOC, kg/hr (lb/hr)
a, b, c, d, e and f are coefficients
The set of coefficients which apply to a vent stream shall be obtained from Table 1.
NR 440.675(5)(f)1.b.b. Where for a vent stream flow rate that is less than 14.2 scm/min (501 scf/min) at a standard temperature of 20°C (68°F): TRE is the TRE index value
Qs is 14.2 scm/min (501 scf/min)
HT is (FLOW) (HVAL) / Qs
where the following inputs are used:
FLOW is the vent stream flow rate (scm/min) (scf/min), at a standard temperature of 20°C (68°F)
HVAL is the vent stream net heating value MJ/scm (Btu/scf), where the net enthalpy per mole of vent stream is based on combustion at 25°C and 760 mm Hg (77°F and 30 in Hg), but the standard temperature for determining the volume corresponding to 1 mole is 20°C (68°F) as in the definition of Qs
Ys = Qs for all vent stream categories listed in Table 1 except for Category E vent streams, where Ys = QsHT/3.6 for metric units and Ys = QsHT/97 for English units.
ETOC is the hourly emissions of TOC reported in kg/hr (lb/hr)
a,b,c,d,e and f are coefficients
The set of coefficients that apply to a vent stream shall be obtained from Table 1.
NR 440.675(5)(f)2.2. The equation for calculating the TRE index value of a vent stream controlled by a flare is as follows: where:
TRE is the TRE index value
ETOC is the hourly emissions of TOC, kg/hr (lb/hr)
Qs is the vent stream flow rate, scm/min (scf/min) at a standard temperature of 20°C (68°F)
HT is the vent stream net heating value, MJ/scm (Btu/scf), where the net enthalpy per mole of vent stream is based on combustion at 25°C and 760 mm Hg (77°F and 30 in Hg), but the standard temperature for determining the volume corresponding to 1 mole is 20°C (68°F) as in the definition of Qs
a,b,c,d and e are coefficients
The set of coefficients that apply to a vent stream shall be obtained from Table 2.
NR 440.675(5)(g)(g) Each owner or operator of an affected facility seeking to comply with sub. (1) (c) or (3) (c) shall recalculate the TRE index value for that affected facility whenever process changes are made. Some examples of process changes are changes in production capacity, feedstock type or catalyst type or whenever there is replacement, removal or addition of recovery equipment. The TRE index value shall be recalculated based on test data or on best engineering estimates of the effects of the change to the recovery system. NR 440.675(5)(g)1.1. Where the recalculated TRE index value is less than or equal to 1.0, the owner or operator shall notify the department within 1 week of the recalculation and shall conduct a performance test according to the methods and procedures required by sub. (5) to determine compliance with sub. (3) (a). Performance tests shall be conducted as soon as possible after the process change but no later than 180 days from the time of the process change. NR 440.675(5)(g)2.2. Where the initial TRE index value is greater than 4.0 and the recalculated TRE index value is less than or equal to 4.0, but greater than 1.0, the owner or operator shall conduct a performance test in accordance with s. NR 440.08 and this subsection, and shall comply with subs. (4) and (6) and this subsection. Performance tests shall be conducted as soon as possible after the process change but no later than 180 days from the time of the process change. NR 440.675(6)(a)(a) Each owner or operator subject to sub. (3) shall notify the department of the specific provisions of sub. (3) with which the owner or operator has elected to comply. Notification shall be submitted with the notification of initial startup required by s. NR 440.07 (1) (c). If an owner or operator elects at a later date to use an alternative provision of sub. (3) with which he or she will comply, then the department shall be notified by the owner or operator 90 days before implementing a change and, upon implementing the change, a performance test shall be performed as specified by sub. (5) within 180 days. NR 440.675(6)(b)(b) Each owner or operator subject to the provisions of this section shall keep up-to-date, readily accessible records of the following data measured during each performance test and also include the following data in the report of the initial performance test required under s. NR 440.08. Where a boiler or process heater with a design heat input capacity of 44 MW (150 million Btu/hour) or greater is used to comply with sub. (3) (a), a report containing performance test data need not be submitted, but a report containing the information of subd. 2. a. is required. The same data specified in this subsection shall be submitted in the reports of all subsequently required performance tests where either the emission control efficiency of a control device, outlet concentration of TOC or the TRE index value of a vent stream from a recovery system is determined. NR 440.675(6)(b)1.1. Where an owner or operator subject to this section seeks to demonstrate compliance with sub. (3) (a) through use of either a thermal or catalytic incinerator: NR 440.675(6)(b)1.a.a. The average firebox temperature of the incinerator, or the average temperature upstream and downstream of the catalyst bed for a catalytic incinerator, measured at least every 15 minutes and averaged over the same time period of the performance testing, and NR 440.675(6)(b)1.b.b. The percent reduction of TOC determined as specified in sub. (5) (b) achieved by the incinerator or the concentration of TOC (ppmv, by compound) determined as specified in sub. (5) (b) at the outlet of the control device on a dry basis corrected to 3% oxygen. NR 440.675(6)(b)2.2. Where an owner or operator subject to the provisions of this section seeks to demonstrate compliance with sub. (3) (a) through use of a boiler or process heater: NR 440.675(6)(b)2.a.a. A description of the location at which the vent stream is introduced into the boiler or process heater, and NR 440.675(6)(b)2.b.b. The average combustion temperature of the boiler or process heater with a design heat input capacity of less than 44 MW (150 million Btu/hr) measured at least every 15 minutes and averaged over the same time period of the performance testing. NR 440.675(6)(b)3.3. Where an owner or operator subject to the provisions of this section seeks to comply with sub. (3) (b) through the use of a smokeless flare, flare design, that is, steam-assisted, air-assisted or nonassisted, all visible emission readings, heat content determinations, flow rate measurements and exit velocity determinations made during the performance test, continuous records of the flare pilot flame monitoring and records of all periods of operations during which the pilot flame is absent. NR 440.675(6)(b)4.a.a. Where an absorber is the final recovery device in a recovery system, the exit specific gravity, or alternative parameter which is a measure of the degree of absorbing liquid saturation, if approved by the department, and average exit temperature of the absorbing liquid, measured at least every 15 minutes and averaged over the same time period of the performance testing, both measured while the vent stream is normally routed and constituted; or NR 440.675(6)(b)4.b.b. Where a condenser is the final recovery device in a recovery system, the average exit, that is, product side, temperature, measured at least every 15 minutes and average over the same time period of the performance testing while the vent stream is normally routed and constituted. NR 440.675(6)(b)4.c.c. Where a carbon adsorber is the final recovery device in a recovery system, the total steam mass flow measured at least every 15 minutes and averaged over the same time period of the performance test, that is, full carbon bed cycle, temperature of the carbon bed after regeneration, and within 15 minutes of completion of any cooling cycle, and duration of the carbon bed steaming cycle, all measured while the vent stream is normally routed and constituted; or NR 440.675(6)(b)4.d.d. As an alternative to subd. 4. a., b. or c., the concentration level or reading indicated by the organic monitoring device at the outlet of the absorber, condenser or carbon adsorber measured at least every 15 minutes and averaged over the same time period of the performance testing while the vent stream is normally routed and constituted. NR 440.675(6)(b)4.e.e. All measurements and calculations performed to determine the TRE index value of the vent stream. NR 440.675(6)(c)(c) Each owner or operator subject to the provisions of this section shall keep up-to-date, readily accessible continuous records of the equipment operating parameters specified to be monitored under sub. (4) (a) and (c) as well as up-to-date, readily accessible records of periods of operation during which the parameter boundaries established during the most recent performance test are exceeded. The department may at any time require a report of these data. Where a combustion device is used by an owner or operator seeking to demonstrate compliance with sub. (3) (a) or (c), periods of operation during which the parameter boundaries established during the most recent performance tests are exceeded are defined as follows: NR 440.675(6)(c)1.1. For thermal incinerators, all 3-hour periods of operation during which the average combustion temperature was more than 28°C (50°F) below the average temperature of the vent stream during the most recent performance test at which compliance with sub. (3) (a) was determined. NR 440.675(6)(c)2.2. For catalytic incinerators, all 3-hour periods of operation during which the average temperature of the vent stream immediately before the catalyst bed is more than 28°C (50°F) below the average temperature of the vent stream during the most recent performance test at which compliance with sub. (3) (a) was determined. The owner or operator also shall record all 3-hour periods of operation during which the average temperature difference across the catalyst bed is less than 80% of the average temperature difference of the device during the most recent performance test at which compliance with sub. (3) (a) was determined. NR 440.675(6)(c)3.3. All 3-hour periods of operation during which the average combustion temperature was more than 28°C (50°F) below the average combustion temperature during the most recent performance test at which compliance with sub. (3) (a) was determined for boilers or process heaters with a design heat input capacity of less than 44 MW (150 million Btu/hr). NR 440.675(6)(c)4.4. For boilers or process heaters, whenever there is a change in the location at which the vent stream is introduced into the flame zone as required under sub. (3) (a). NR 440.675(6)(d)(d) Each owner or operator subject to the provisions of this section shall keep up-to-date, readily accessible continuous records of the flow indication specified under sub. (4) (a) 2., (b) 2. and (c) 1. as well as up-to-date, readily accessible records of all periods when the vent stream is diverted from the control device or has no flow rate. NR 440.675(6)(e)(e) Each owner or operator subject to the provisions of this section who uses a boiler or process heater with a design heat input capacity of 44 MW (150 million Btu/hour) or greater to comply with sub. (3) (a) shall keep an up-to-date, readily accessible record of all periods of operation of the boiler or process heater. NR 440.675 NoteNote: Examples of such records could include records of steam use, fuel use or monitoring data collected pursuant to other state or federal regulatory requirements.
NR 440.675(6)(f)(f) Each owner or operator subject to the provisions of this section shall keep up-to-date, readily accessible continuous records of the flare pilot flame monitoring specified in sub. (4) (b), as well as up-to-date, readily accessible records of all periods of operations in which the pilot flame is absent. NR 440.675(6)(g)(g) Each owner or operator subject to the provisions of this section shall keep up-to-date, readily accessible continuous records of the equipment operating parameters specified to be monitored under sub. (4) (e) as well as up-to-date, readily accessible records of periods of operation during which the parameter boundaries established during the most recent performance test are exceeded. The department may at any time require a report of these data. Where the owner or operator seeks to demonstrate compliance with sub. (3) (c), periods of operation during which the parameter boundaries established during the most recent performance tests are exceeded are defined as follows: NR 440.675(6)(g)1.1. Where an absorber is the final recovery device in a recovery system and where an organic monitoring device is not used: NR 440.675(6)(g)1.a.a. All 3-hour periods of operation during which the average absorbing liquid temperature was more than 11°C (20°F) above the average absorbing liquid temperature during the most recent performance test or NR 440.675(6)(g)1.b.b. All 3-hour periods of operation during which the average absorbing liquid specific gravity was more than 0.1 unit above or more than 0.1 unit below, the average absorbing liquid specific gravity during the most recent performance test, unless monitoring of an alternative parameter, which is a measure of the degree of absorbing liquid saturation, is approved by the department, in which case the department will define appropriate parameter boundaries and periods of operation during which they are exceeded. NR 440.675(6)(g)2.2. When a condenser is the final recovery device in a recovery system and where an organic monitoring device is not used, all 3-hour periods of operation during which the average exit or product side condenser operating temperature was more than 6°C (11°F) above the average exit (product side) operating temperature during the most recent performance test. NR 440.675(6)(g)3.3. Where a carbon adsorber is the final recovery device in a recovery system and where an organic monitoring device is not used: NR 440.675(6)(g)3.a.a. All carbon bed regeneration cycles during which the total mass steam flow was more than 10% below the total mass steam flow during the most recent performance test; or NR 440.675(6)(g)3.b.b. All carbon bed regeneration cycles during which the temperature of the carbon bed after regeneration, and after completion of any cooling cycle, was more than 10% greater than the carbon bed temperature, in degrees Celsius, during the most recent performance test. NR 440.675(6)(g)4.4. Where an absorber, condenser or carbon adsorber is the final recovery device in the recovery system and an organic monitoring device approved by the department is used, all 3-hour periods of operation during which the average concentration level or reading of organic compounds in the exhaust gases is more than 20% greater than the exhaust gas organic compound concentration level or reading measured by the monitoring device during the most recent performance test. NR 440.675(6)(h)(h) Each owner or operator subject to the provisions of this section and seeking to demonstrate compliance with sub. (3) (c) shall keep up-to-date, readily accessible records of: NR 440.675(6)(h)1.1. Any changes in production capacity, feedstock type or of any replacement, removal or addition of recovery equipment or air oxidation reactors; NR 440.675(6)(h)3.3. The results of any performance test performed pursuant to the methods and procedures required by sub. (5) (d).
