Wisconsin Administrative Code
Department of Natural Resources
NR 600-699 - Environmental Protection - Hazardous Waste Management
Chapter NR 661 - Hazardous Waste Identification And Listing
Subchapter CC - Air Emission Standards for Tanks and Containers
Section NR 661.1084 - Standards: tanks
Universal Citation: WI Admin Code ยง NR 661.1084
Current through August 26, 2024
(1) The provisions of this section apply to the control of air pollutant emissions from tanks for which s. NR 661.1082(2) references the use of this section for such air emission control.
(2) The remanufacturer or other person that stores or treats the hazardous secondary material shall control air pollutant emissions from each tank subject to this section in accordance with one of the following requirements as applicable:
(a) For a tank that manages hazardous
secondary material that meets all of the conditions specified in subds. 1. to
2., the remanufacturer or other person that stores or treats the hazardous
secondary material shall control air pollutant emissions from the tank in
accordance with the Tank Level 1 controls specified in sub. (3) or the Tank
Level 2 controls specified in sub. (4).
1.
The hazardous secondary material in the tank has a maximum organic vapor
pressure less than the maximum organic vapor pressure limit for the tank's
design capacity category as follows:
a. For a
tank design capacity equal to or greater than 151 m 3, the maximum organic
vapor pressure limit for the tank is 5.2 kPa.
b. For a tank design capacity equal to or
greater than 75 m 3 but less than 151 m 3, the maximum organic vapor pressure
limit for the tank is 27.6 kPa.
c.
For a tank design capacity less than 75 m 3, the maximum organic vapor pressure
limit for the tank is 76.6 kPa.
2. The hazardous secondary material in the
tank is not heated by the remanufacturer or other person that stores or treats
the hazardous secondary material to a temperature that is greater than the
temperature at which the maximum organic vapor pressure of the hazardous
secondary material is determined for the purpose of complying with subd.
1.
(b) For a tank that
manages hazardous secondary material that does not meet all of the conditions
specified in par. (a) 1. and 2., the remanufacturer or other person that stores
or treats the hazardous secondary material shall control air pollutant
emissions from the tank by using Tank Level 2 controls in accordance with the
requirements under sub. (4). An example of a tank required to use Tank Level 2
controls is a tank for which the hazardous secondary material in the tank has a
maximum organic vapor pressure that is equal to or greater than the maximum
organic vapor pressure limit for the tank's design capacity category as
specified in par. (a) 1.
(3) A remanufacturer or other person that stores or treats the hazardous secondary material controlling air pollutant emissions from a tank using Tank Level 1 controls shall meet all of the following requirements:
(a) The
remanufacturer or other person that stores or treats that hazardous secondary
material shall determine the maximum organic vapor pressure for a hazardous
secondary material to be managed in the tank using Tank Level 1 controls before
the first time the hazardous secondary material is placed in the tank. The
maximum organic vapor pressure shall be determined using the procedures
specified in s.
NR 661.1083(3). Thereafter, the
remanufacturer or other person that stores or treats the hazardous secondary
material shall perform a new determination whenever changes to the hazardous
secondary material managed in the tank could potentially cause the maximum
organic vapor pressure to increase to a level that is equal to or greater than
the maximum organic vapor pressure limit for the tank design capacity category
specified in sub. (2) (a) 1., as applicable to the tank.
(b) The remanufacturer or other person that
stores or treats that hazardous secondary material shall equip the tank with a
fixed roof designed to meet all of the following specifications:
1. The fixed roof and its closure devices
shall be designed to form a continuous barrier over the entire surface area of
the hazardous secondary material in the tank. The fixed roof may be a separate
cover installed on the tank, such as a removable cover mounted on an open-top
tank, or may be an integral part of the tank structural design, such as a
horizontal cylindrical tank equipped with a hatch.
2. The fixed roof shall be installed in a
manner such that there are no visible cracks, holes, gaps, or other open spaces
between roof section joints or between the interface of the roof edge and the
tank wall.
3. Each opening in the
fixed roof, and any manifold system associated with the fixed roof, shall be
any of the following:
a. Equipped with a
closure device designed to operate such that when the closure device is secured
in the closed position there are no visible cracks, holes, gaps, or other open
spaces in the closure device or between the perimeter of the opening and the
closure device.
b. Connected by a
closed-vent system that is vented to a control device. The control device shall
remove or destroy organics in the vent stream, and shall be operating whenever
hazardous secondary material is managed in the tank, except during any of the
following periods:
1) During periods when it
is necessary to provide access to the tank for performing the activities of
subd. 3. b. 2), venting of the vapor headspace underneath the fixed roof to the
control device is not required, opening of closure devices is allowed, and
removal of the fixed roof is allowed. Following completion of the activity, the
remanufacturer or other person that stores or treats the hazardous secondary
material shall promptly secure the closure device in the closed position or
reinstall the cover, as applicable, and resume operation of the control
device.
2) During periods of
routine inspection, maintenance, or other activities needed for normal
operations, and for removal of accumulated sludge or other residues from the
bottom of the tank.
4. The fixed roof and its closure devices
shall be made of suitable materials that will minimize exposure of the
hazardous secondary material to the atmosphere, to the extent practical, and
will maintain the integrity of the fixed roof and closure devices throughout
their intended service life. Factors to be considered when selecting the
materials for and designing the fixed roof and closure devices shall include
organic vapor permeability; the effects of any contact with the hazardous
secondary material or its vapors managed in the tank; the effects of outdoor
exposure to wind, moisture, and sunlight; and the operating practices used for
the tank on which the fixed roof is installed.
(c) Whenever a hazardous secondary material
is in the tank, the fixed roof shall be installed with each closure device
secured in the closed position except as follows:
1. Opening of closure devices or removal of
the fixed roof is allowed at the following times:
a. To provide access to the tank for
performing routine inspection, maintenance, or other activities needed for
normal operations. Examples of such activities include those times when a
worker needs to open a port to sample the liquid in the tank, or when a worker
needs to open a hatch to maintain or repair equipment. Following completion of
the activity, the remanufacturer or other person that stores or treats the
hazardous secondary material shall promptly secure the closure device in the
closed position or reinstall the cover, as applicable, to the tank.
b. To remove accumulated sludge or other
residues from the bottom of the tank.
2. Opening of a spring-loaded pressure-vacuum
relief valve, conservation vent, or similar type of pressure relief device that
vents to the atmosphere is allowed during normal operations for the purpose of
maintaining the tank internal pressure in accordance with the tank design
specifications. The device shall be designed to operate with no detectable
organic emissions when the device is secured in the closed position. The
settings at which the device opens shall be established such that the device
remains in the closed position whenever the tank internal pressure is within
the internal pressure operating range determined by the remanufacturer or other
person that stores or treats the hazardous secondary material based on the tank
manufacturer recommendations, applicable regulations, fire protection and
prevention codes, standard engineering codes and practices, or other
requirements for the safe handling of flammable, ignitable, explosive,
reactive, or hazardous materials. Examples of normal operating conditions that
may require these devices to open are during those times when the tank internal
pressure exceeds the internal pressure operating range for the tank as a result
of loading operations or diurnal ambient temperature fluctuations.
3. Opening of a safety device, as defined in
s.
NR 661.1081, is allowed at any time conditions require
doing so to avoid an unsafe condition.
(d) The remanufacturer or other person that
stores or treats the hazardous secondary material shall inspect the air
emission control equipment according to all of the following requirements:
1. The fixed roof and its closure devices
shall be visually inspected by the remanufacturer or other person that stores
or treats the hazardous secondary material to check for defects that could
result in air pollutant emissions. Defects include visible cracks, holes, or
gaps in the roof sections or between the roof and the tank wall; broken,
cracked, or otherwise damaged seals or gaskets on closure devices; and broken
or missing hatches, access covers, caps, or other closure devices.
2. The remanufacturer or other person that
stores or treats the hazardous secondary material shall perform an initial
inspection of the fixed roof and its closure devices on or before the date that
the tank becomes subject to this section. Thereafter, the remanufacturer or
other person that stores or treats the hazardous secondary material shall
perform the inspections at least once every year except under the special
conditions provided for in sub. (12).
3. In the event that a defect is detected,
the remanufacturer or other person that stores or treats the hazardous
secondary material shall repair the defect in accordance with the requirements
under sub. (11).
4. The
remanufacturer or other person that stores or treats the hazardous secondary
material shall maintain a record of the inspection in accordance with the
requirements specified in s.
NR 661.1089(2).
(4) The remanufacturer or other person that stores or treats the hazardous secondary material controlling air pollutant emissions from a tank using Tank Level 2 controls shall use one of the following tanks:
(a) A fixed-roof tank
equipped with an internal floating roof in accordance with the requirements
specified in sub. (5).
(b) A tank
equipped with an external floating roof in accordance with the requirements
specified in sub. (6).
(c) A tank
vented through a closed-vent system to a control device in accordance with the
requirements specified in sub. (7).
(d) A pressure tank designed and operated in
accordance with the requirements specified in sub. (8).
(e) A tank located inside an enclosure that
is vented through a closed-vent system to an enclosed combustion control device
in accordance with the requirements specified in sub. (9).
(5) The remanufacturer or other person that stores or treats the hazardous secondary material who controls air pollutant emissions from a tank using a fixed roof with an internal floating roof shall meet the requirements specified in pars. (a) to (c).
(a) The tank shall be equipped with a fixed
roof and an internal floating roof in accordance with all of the following
requirements:
1. The internal floating roof
shall be designed to float on the liquid surface except when the floating roof
shall be supported by the leg supports.
2. The internal floating roof shall be
equipped with a continuous seal between the wall of the tank and the floating
roof edge that meets any of the following requirements:
a. A single continuous seal that is either a
liquid-mounted seal or a metallic shoe seal, as defined in s.
NR 661.1081.
b. Two continuous seals mounted one above the
other. The lower seal may be a vapor-mounted seal.
3. The internal floating roof shall meet all
of the following specifications:
a. Each
opening in a noncontact internal floating roof except for automatic bleeder
vents, vacuum breaker vents, and the rim space vents shall provide a projection
below the liquid surface.
b. Each
opening in the internal floating roof shall be equipped with a gasketed cover
or a gasketed lid except for leg sleeves, automatic bleeder vents, rim space
vents, column wells, ladder wells, sample wells, and stub drains.
c. Each penetration of the internal floating
roof for the purpose of sampling shall have a slit fabric cover that covers at
least 90 percent of the opening.
d.
Each automatic bleeder vent and rim space vent shall be gasketed.
e. Each penetration of the internal floating
roof that allows for passage of a ladder shall have a gasketed sliding
cover.
f. Each penetration of the
internal floating roof that allows for passage of a column supporting the fixed
roof shall have a flexible fabric sleeve seal or a gasketed sliding
cover.
(b) The
remanufacturer or other person that stores or treats the hazardous secondary
material shall operate the tank in accordance with all of the following
requirements:
1. When the floating roof is
resting on the leg supports, the process of filling, emptying, or refilling
shall be continuous and shall be completed as soon as practical.
2. Automatic bleeder vents shall be set
closed at all times when the roof is floating, except when the roof is being
floated off or is being landed on the leg supports.
3. Prior to filling the tank, each cover,
access hatch, gauge float well or lid on any opening in the internal floating
roof shall be bolted or fastened closed, so that there are no visible gaps. Rim
space vents shall be set to open only when the internal floating roof is not
floating or when the pressure beneath the rim exceeds the manufacturer's
recommended setting.
(c)
The remanufacturer or other person that stores or treats the hazardous
secondary material shall inspect the internal floating roof in accordance with
all of the following:
1. The floating roof
and its closure devices shall be visually inspected by the remanufacture or
other person that stores or treats the hazardous secondary material to check
for defects that could result in air pollutant emissions. Defects include
conditions in which the internal floating roof is not floating on the surface
of the liquid inside the tank; liquid has accumulated on top of the internal
floating roof; any portion of the roof seals have detached from the roof rim;
holes, tears, or other openings are visible in the seal fabric; the gaskets no
longer close off the hazardous secondary material surface from the atmosphere;
or the slotted membrane has more than 10 percent open area.
2. Except as provided in subd. 3., the
remanufacturer or other person that stores or treats the hazardous secondary
material shall inspect the internal floating roof components using all of the
following procedures:
a. Visually inspect the
internal floating roof components through openings on the fixed-roof, such as
manholes and roof hatches, at least once every 12 months after initial fill.
b. Visually inspect the internal
floating roof, primary seal, secondary seal, if one is in service, gaskets,
slotted membranes, and sleeve seals, if any, each time the tank is emptied and
degassed and at least every 10 years.
3. As an alternative to performing the
inspections specified in subd. 2. for an internal floating roof equipped with 2
continuous seals mounted one above the other, the remanufacturer or other
person that stores or treats the hazardous secondary material may visually
inspect the internal floating roof, primary and secondary seals, gaskets,
slotted membranes, and sleeve seals, if any, each time the tank is emptied and
degassed and at least every 5 years.
4. Prior to each inspection required under
subd. 2. or 3., the remanufacturer or other person that stores or treats the
hazardous secondary material shall notify the department in advance to provide
the department with the opportunity to have an observer present during the
inspection. The remanufacturer or other person that stores or treats the
hazardous secondary material shall notify the department of the date and
location of the inspection as follows:
a.
Prior to each visual inspection of an internal floating roof in a tank that has
been emptied and degassed, the remanufacturer or other person that stores or
treats the hazardous secondary material shall prepare and send written
notification so that it is received by the department at least 30 calendar days
before refilling the tank except when an inspection is not planned as provided
for in subd. 4. b.
b. When a visual
inspection is not planned and the remanufacturer or other person that stores or
treats the hazardous secondary material could not have known about the
inspection 30 calendar days before refilling the tank, the remanufacturer or
other person that stores or treats the hazardous secondary material shall
notify the department as soon as possible, but no later than 7 calendar days
before refilling the tank. This notification may be made by telephone and
immediately followed by a written explanation for why the inspection is
unplanned. Alternatively, written notification, including the explanation for
the unplanned inspection, may be sent so that it is received by the department
at least 7 calendar days before refilling the tank.
5. In the event that a defect is detected,
the remanufacturer or other person that stores or treats the hazardous
secondary material shall repair the defect in accordance with the requirements
under sub. (11).
6. The
remanufacturer or other person that stores or treats the hazardous secondary
material shall maintain a record of the inspection in accordance with the
requirements specified in s.
NR 661.1089(2).
(d) Safety devices, as defined in s.
NR 661.1081, may be installed and operated as necessary
on any tank complying with the requirements specified in this
subsection.
(6) The remanufacturer or other person that stores or treats the hazardous secondary material who controls air pollutant emissions from a tank using an external floating roof shall meet the requirements specified in pars. (a) to (c).
(a) The remanufacturer or other person that
stores or treats the hazardous secondary material shall design the external
floating roof in accordance with all of the following requirements:
1. The external floating roof shall be
designed to float on the liquid surface except when the floating roof is
supported by the leg supports.
2.
The floating roof shall be equipped with 2 continuous seals, one above the
other, between the wall of the tank and the roof edge. The lower seal is
referred to as the primary seal, and the upper seal is referred to as the
secondary seal. The primary seal and secondary seal shall meet the following
requirements:
a. The primary seal shall be a
liquid-mounted seal or a metallic shoe seal, as defined in s.
NR 661.1081. The total area of the gaps between the tank
wall and the primary seal may not exceed 212 square centimeters per meter of
tank diameter, and the width of any portion of these gaps may not exceed 3.8
centimeters. If a metallic shoe seal is used for the primary seal, the metallic
shoe seal shall be designed so that one end extends into the liquid in the tank
and the other end extends a vertical distance of at least 61 centimeters above
the liquid surface.
b. The
secondary seal shall be mounted above the primary seal and cover the annular
space between the floating roof and the wall of the tank. The total area of the
gaps between the tank wall and the secondary seal may not exceed 21.2 square
centimeters per meter of tank diameter, and the width of any portion of these
gaps may not exceed 1.3 centimeters.
3. The external floating roof shall meet all
of the following specifications:
a. Except for
automatic bleeder vents, vacuum breaker vents, and rim space vents, each
opening in a noncontact external floating roof shall provide a projection below
the liquid surface.
b. Except for
automatic bleeder vents, rim space vents, roof drains, and leg sleeves, each
opening in the roof shall be equipped with a gasketed cover, seal, or
lid.
c. Each access hatch and each
gauge float well shall be equipped with a cover designed to be bolted or
fastened when the cover is secured in the closed position.
d. Each automatic bleeder vent and each rim
space vent shall be equipped with a gasket.
e. Each roof drain that empties into the
liquid managed in the tank shall be equipped with a slotted membrane fabric
cover that covers at least 90 percent of the area of the opening.
f. Each unslotted and slotted guide pole well
shall be equipped with a gasketed sliding cover or a flexible fabric sleeve
seal.
g. Each unslotted guide pole
shall be equipped with a gasketed cap on the end of the pole.
h. Each slotted guide pole shall be equipped
with a gasketed float or other device that closes off the liquid surface from
the atmosphere.
i. Each gauge hatch
and each sample well shall be equipped with a gasketed cover.
(b) The remanufacturer
or other person that stores or treats the hazardous secondary material shall
operate the tank in accordance with all of the following requirements:
1. When the floating roof is resting on the
leg supports, the process of filling, emptying, or refilling shall be
continuous and shall be completed as soon as practical.
2. Except for automatic bleeder vents, rim
space vents, roof drains, and leg sleeves, each opening in the roof shall be
secured and maintained in a closed position at all times except when the
closure device must be open for access.
3. Covers on each access hatch and each gauge
float well shall be bolted or fastened when secured in the closed
position.
4. Automatic bleeder
vents shall be set closed at all times when the roof is floating, except when
the roof is being floated off or is being landed on the leg supports.
5. Rim space vents shall be set to open only
at those times that the roof is being floated off the roof leg supports or when
the pressure beneath the rim seal exceeds the manufacturer's recommended
setting.
6. The cap on the end of
each unslotted guide pole shall be secured in the closed position at all times
except when measuring the level or collecting samples of the liquid in the
tank.
7. Except when the hatch or
well must be opened for access, the cover on each gauge hatch or sample well
shall be secured in the closed position at all times.
8. Except during inspections, both the
primary seal and the secondary seal shall completely cover the annular space
between the external floating roof and the wall of the tank in a continuous
fashion.
(c) The
remanufacturer or other person that stores or treats the hazardous secondary
material shall inspect the external floating roof in accordance with all of the
following procedures:
1. The remanufacturer
or other person that stores or treats the hazardous secondary material shall
measure the external floating roof seal gaps in accordance with all of the
following requirements:
a. The remanufacturer
or other person that stores or treats the hazardous secondary material shall
perform measurements of gaps between the tank wall and the primary seal within
60 calendar days after initial operation of the tank following installation of
the floating roof and, thereafter, at least once every 5 years.
b. The remanufacturer or other person that
stores or treats the hazardous secondary material shall perform measurements of
gaps between the tank wall and the secondary seal within 60 calendar days after
initial operation of the tank following installation of the floating roof and,
thereafter, at least once every year.
c. If a tank ceases to hold hazardous
secondary material for a period of one year or more, subsequent introduction of
hazardous secondary material into the tank shall be considered an initial
operation for the purposes of subd. 1. a. and b.
d. The remanufacturer or other person that
stores or treats the hazardous secondary material shall determine the total
surface area of gaps in the primary seal and in the secondary seal individually
using the following procedure:
1) The seal
gap measurements shall be performed at one or more floating roof levels when
the roof is floating off the roof supports.
2) Seal gaps, if any, shall be measured
around the entire perimeter of the floating roof in each place where a
0.32-centimeter diameter uniform probe passes freely, without forcing or
binding against the seal, between the seal and the wall of the tank and the
circumferential distance of each such location shall be measured.
3) For a seal gap measured under par. (c),
the gap surface area shall be determined by using probes of various widths to
measure accurately the actual distance from the tank wall to the seal and
multiplying each width by its respective circumferential distance.
4) The total gap area shall be calculated by
adding the gap surface areas determined for each identified gap location for
the primary seal and the secondary seal individually, and then dividing the sum
for each seal type by the nominal diameter of the tank. The total gap areas for
the primary seal and secondary seal shall be compared to the respective
standards for the seal type as specified in par. (a) 2.
e. In the event that the seal gap
measurements do not conform to the specifications in par. (a) 2., the
remanufacturer or other person that stores or treats the hazardous secondary
material shall repair the defect in accordance with the requirements under sub.
(11).
f. The remanufacturer or
other person that stores or treats the hazardous secondary material shall
maintain a record of the inspection in accordance with the requirements
specified in s.
NR 661.1089(2).
2. The remanufacturer or other person that
stores or treats the hazardous secondary material shall visually inspect the
external floating roof in accordance with all of the following requirements:
a. The remanufacturer or other person that
stores or treats the hazardous secondary material shall visually inspect the
floating roof and its closure devices shall to check for defects that could
result in air pollutant emissions. Defects include holes, tears, or other
openings in the rim seal or seal fabric of the floating roof; a rim seal
detached from the floating roof; all or a portion of the floating roof deck
being submerged below the surface of the liquid in the tank; broken, cracked,
or otherwise damaged seals or gaskets on closure devices; and broken or missing
hatches, access covers, caps, or other closure devices.
b. The remanufacturer or other person that
stores or treats the hazardous secondary material shall perform an initial
inspection of the external floating roof and its closure devices on or before
the date the tank becomes subject to this section. Thereafter, the
remanufacturer or other person that stores or treats the hazardous secondary
material shall perform the inspections at least once every year except for the
special conditions provided for in sub. (12).
c. In the event that a defect is detected,
the remanufacturer or other person that stores or treats the hazardous
secondary material shall repair the defect in accordance with the requirements
under sub. (11).
d. The
remanufacturer or other person that stores or treats the hazardous secondary
material shall maintain a record of the inspection in accordance with the
requirements specified in s.
NR 661.1089(2).
3. Prior to each inspection required under
subd. 1. or 2., the remanufacturer or other person that stores or treats the
hazardous secondary material shall notify the department in advance of each
inspection to provide the department with the opportunity to have an observer
present during the inspection. The remanufacturer or other person that stores
or treats the hazardous secondary material shall notify the department of the
date and location of the inspection as follows:
a. Prior to each inspection to measure
external floating roof seal gaps as required under subd. 1., the remanufacturer
or other person that stores or treats the hazardous secondary material shall
prepare and send written notification so that it is received by the department
at least 30 calendar days before the date the measurements are scheduled to be
performed.
b. Prior to each visual
inspection of an external floating roof in a tank that has been emptied and
degassed, the remanufacturer or other person that stores or treats the
hazardous secondary material shall prepare and send written notification so
that it is received by the department at least 30 calendar days before
refilling the tank except when an inspection is not planned as provided for in
subd. 3. c.
c. When a visual
inspection is not planned and the remanufacturer or other person that stores or
treats the hazardous secondary material could not have known about the
inspection 30 calendar days before refilling the tank, the owner or operator
shall notify the department as soon as possible, but no later than 7 calendar
days before refilling the tank. This notification may be made by telephone and
immediately followed by a written explanation for why the inspection is
unplanned. Alternatively, written notification, including the explanation for
the unplanned inspection, may be sent so that it is received by the department
at least 7 calendar days before refilling the tank.
(d) Safety devices, as defined in
s.
NR 661.1081, may be installed and operated as necessary
on any tank complying with the requirements specified in this subsection.
(7) The remanufacturer or other person that stores or treats the hazardous secondary material who controls air pollutant emissions from a tank by venting the tank to a control device shall meet all of the following requirements:
(a) The tank shall be covered by a fixed roof
and vented directly through a closed-vent system to a control device in
accordance with all of the following requirements:
1. The fixed roof and its closure devices
shall be designed to form a continuous barrier over the entire surface area of
the liquid in the tank.
2. Each
opening in the fixed roof not vented to the control device shall be equipped
with a closure device. If the pressure in the vapor headspace underneath the
fixed roof is less than atmospheric pressure when the control device is
operating, the closure devices shall be designed to operate such that when the
closure device is secured in the closed position there are no visible cracks,
holes, gaps, or other open spaces in the closure device or between the
perimeter of the cover opening and the closure device. If the pressure in the
vapor headspace underneath the fixed roof is equal to or greater than
atmospheric pressure when the control device is operating, the closure device
shall be designed to operate with no detectable organic emissions.
3. The fixed roof and its closure devices
shall be made of suitable materials that will minimize exposure of the
hazardous secondary material to the atmosphere, to the extent practical, and
will maintain the integrity of the fixed roof and closure devices throughout
their intended service life. Factors to be considered when selecting the
materials for and designing the fixed roof and closure devices shall include
organic vapor permeability; the effects of any contact with the liquid and its
vapor managed in the tank; the effects of outdoor exposure to wind, moisture,
and sunlight; and the operating practices used for the tank on which the fixed
roof is installed.
4. The
closed-vent system and control device shall be designed and operated in
accordance with the requirements specified in s.
NR 661.1087.
(b) Whenever a hazardous secondary material
is in the tank, the fixed roof shall be installed with each closure device
secured in the closed position and the vapor headspace underneath the fixed
roof vented to the control device except as follows:
1. Venting to the control device is not
required, and opening of closure devices or removal of the fixed roof is
allowed at the following times:
a. To provide
access to the tank for performing routine inspection, maintenance, or other
activities needed for normal operations. Examples of such activities include
those times when a worker needs to open a port to sample liquid in the tank, or
when a worker needs to open a hatch to maintain or repair equipment. Following
completion of the activity, the remanufacturer or other person that stores or
treats the hazardous secondary material shall promptly secure the closure
device in the closed position or reinstall the cover, as applicable, to the
tank.
b. To remove accumulated
sludge or other residues from the bottom of a tank.
2. Opening of a safety device, as defined in
s.
NR 661.1081, is allowed at any time conditions require
doing so to avoid an unsafe condition.
(c) The remanufacturer or other person that
stores or treats the hazardous secondary material shall inspect and monitor the
air emission control equipment in accordance with all of the following
procedures:
1. The fixed roof and its closure
devices shall be visually inspected by the remanufacturer or other person that
stores or treats the hazardous secondary material to check for defects that
could result in air pollutant emissions. Defects include visible cracks, holes,
or gaps in the roof sections or between the roof and the tank wall; broken,
cracked, or otherwise damaged seals or gaskets on closure devices; and broken
or missing hatches, access covers, caps, or other closure devices.
2. The remanufacturer or other person that
stores or treats the hazardous secondary material shall inspect and monitor the
closed-vent system and control device in accordance with the procedures
specified in s.
NR 661.1087.
3. The remanufacturer or other person that
stores or treats the hazardous secondary material shall perform an initial
inspection of the air emission control equipment on or before the date that the
tank becomes subject to this section. Thereafter, the remanufacturer or other
person that stores or treats the hazardous secondary material shall perform the
inspections at least once every year except for the special conditions provided
for in sub. (12).
4. In the event
that a defect is detected, the remanufacture or other person that stores or
treats the hazardous secondary material shall repair the defect in accordance
with the requirements under sub. (11).
5. The remanufacturer or other person that
stores or treats the hazardous secondary material shall maintain a record of
the inspection in accordance with the requirements specified in s.
NR 661.1089(2).
(8) The remanufacturer or other person that stores or treats the hazardous secondary material who controls air pollutant emissions by using a pressure tank shall meet all of the following requirements:
(a) The tank shall be designed
not to vent to the atmosphere as a result of compression of the vapor headspace
in the tank during filling of the tank to its design capacity.
(b) All tank openings shall be equipped with
closure devices designed to operate with no detectable organic emissions as
determined using the procedure specified in s.
NR 661.1083(4).
(c) Whenever a hazardous secondary material
is in the tank, the tank shall be operated as a closed system that does not
vent to the atmosphere except under any of the following conditions:
1. At those times when opening of a safety
device, as defined in s.
NR 661.1081, is required to avoid an unsafe
condition.
2. At those times when
purging of inerts from the tank is required and the purge stream is routed to a
closed-vent system and control device designed and operated in accordance with
the requirements specified in s.
NR 661.1087.
(9) The remanufacturer or other person that stores or treats the hazardous secondary material who controls air pollutant emissions by using an enclosure vented through a closed-vent system to an enclosed combustion control device shall meet the of the following requirements:
(a) The tank shall be located
inside an enclosure and the enclosure shall be designed and operated in
accordance with the criteria for a permanent total enclosure as specified in
"Procedure T-Criteria for and Verification of a Permanent or Temporary Total
Enclosure" of appendix B of
40
CFR 52.741, incorporated by reference in s.
NR
660.11. The enclosure may have permanent or temporary
openings to allow worker access; passage of material into or out of the
enclosure by conveyor, vehicles, or other mechanical means; entry of permanent
mechanical or electrical equipment; or direct airflow into the enclosure. The
remanufacturer or other person that stores or treats the hazardous secondary
material shall perform the verification procedure for the enclosure as
specified in Section 5.0 of "Procedure T-Criteria for and Verification of a
Permanent or Temporary Total Enclosure" initially when the enclosure is first
installed and, thereafter, annually.
(b) The enclosure shall be vented through a
closed-vent system to an enclosed combustion control device that is designed
and operated in accordance with the standards for either a vapor incinerator,
boiler, or process heater specified in s.
NR 661.1087.
(c) Safety devices, as defined in s.
NR 661.1081, may be installed and operated as necessary
on any enclosure, closed-vent system, or control device used to comply with the
requirements specified in pars. (a) and (b).
(d) The remanufacturer or other person that
stores or treats the hazardous secondary material shall inspect and monitor the
closed-vent system and control device as specified in s.
NR 661.1087.
(10) The remanufacturer or other person that stores or treats the hazardous secondary material shall transfer hazardous secondary material to a tank subject to this section in accordance with all of the following requirements:
(a) Except as
provided in par. (b), transfer of hazardous secondary material to the tank from
another tank subject to this section shall be conducted using continuous
hard-piping or another closed system that does not allow exposure of the
hazardous secondary material to the atmosphere.
Note: For the purpose of complying with this provision, an individual drain system as defined in 40 CFR part 63, subpart RR - National Emission Standards for Individual Drain Systems is considered to be a closed system when it meets the requirements of 40 CFR part 63, subpart RR-National Emission Standards for Individual Drain Systems.
(b) The requirements under par. (a) do not
apply when transferring a hazardous secondary material to the tank under any of
the following conditions:
1. The hazardous
secondary material meets the average VO concentration conditions specified in
s.
NR 661.1082(3) at the point of material
origination.
2. The hazardous
secondary material has been treated by an organic destruction or removal
process to meet the requirements specified in s.
NR 661.1082(3).
3. The hazardous secondary material meets the
requirements specified in s.
NR 661.1082(3).
(11) The remanufacturer or other person that stores or treats the hazardous secondary material shall repair each defect detected during an inspection performed in accordance with the requirements specified in subs. (3) (d), (5) (c), (6) (c), or (7) (c) as follows:
(a) The remanufacturer or other person that
stores or treats the hazardous secondary material shall make first efforts at
repair of the defect no later than 5 calendar days after detection, and repair
shall be completed as soon as possible but no later than 45 calendar days after
detection except as provided in par. (b).
(b) Repair of a defect may be delayed beyond
45 calendar days if the remanufacturer or other person that stores or treats
the hazardous secondary material determines that repair of the defect requires
emptying or temporary removal from service of the tank and no alternative tank
capacity is available at the site to accept the hazardous secondary material
normally managed in the tank. In this case, the remanufacturer or other person
that stores or treats the hazardous secondary material shall repair the defect
the next time the process or unit that is generating the hazardous secondary
material managed in the tank stops operation. Repair of the defect shall be
completed before the process or unit resumes operation.
(12) Following the initial inspection and monitoring of the cover as required by the applicable provisions of this subchapter, subsequent inspection and monitoring may be performed at intervals longer than one year under any of the following special conditions:
(a) In the case when inspecting or monitoring
the cover would expose a worker to dangerous, hazardous, or other unsafe
conditions, then the remanufacturer or other person that stores or treats the
hazardous secondary material may designate a cover as an "unsafe to inspect and
monitor cover" and comply with all of the following requirements:
1. Prepare a written explanation for the
cover stating the reasons why the cover is unsafe to visually inspect or to
monitor, if required.
2. Develop
and implement a written plan and schedule to inspect and monitor the cover,
using the procedures specified in the applicable section of this subchapter, as
frequently as practicable during those times when a worker can safely access
the cover.
(b) In the
case when a tank is buried partially or entirely underground, a remanufacturer
or other person that stores or treats the hazardous secondary material is
required to inspect and monitor, as required by the applicable provisions of
this section, only those portions of the tank cover and those connections to
the tank, such as fill ports, access hatches, or gauge wells, that are located
on or above the ground surface.
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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