Wisconsin Administrative Code
Department of Natural Resources
NR 600-699 - Environmental Protection - Hazardous Waste Management
Chapter NR 665 - Interim License Hazardous Waste Treatment, Storage And Disposal Facility Standards
Subchapter CC - Air Emission Standards for Tanks, Surface Impoundments and Containers
Section NR 665.1088 - Standards: closed-vent systems and control devices
Universal Citation: WI Admin Code ยง NR 665.1088
Current through August 26, 2024
(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 665.1033(10).
(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 665.1033(11).
(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 665.1033(3).
3. A flare designed and operated according to
s.
NR 665.1033(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 665.1090(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 665.1033(7) or (8).
2. Manage all carbon that is hazardous waste
and that is removed from the control device according to s.
NR 665.1033(13), 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 665.1033(9).
(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:
a. A flare.
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 665.1033(5).
3. For a performance test conducted to meet
subd. 1., use the test methods and procedures in s.
NR 665.1034(3) (a) to
(d).
4. For a design analysis conducted to meet
subd. 1., meet the requirements in s.
NR 665.1035(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 665.1033(6) (b) and (11). Inspect the
readings from each monitoring device required by s.
NR 665.1033(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.
Disclaimer: These regulations may not be the most recent version. Wisconsin may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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