a) The
provisions of this Section apply to the control of air pollutant emissions from
tanks for which Section
721.982(b)
references the use of this Section for air emission control.
b) The remanufacturer or other person that
stores or treats the hazardous secondary material must control air pollutant
emissions from each tank subject to this Section in accordance with the
following requirements, as applicable:
1) For
a tank that manages hazardous secondary material that meets all of the
conditions specified in subsections (b)(1)(A) through (b)(1)(C), the
remanufacturer or other person that stores or treats the hazardous secondary
material must control air pollutant emissions from the tank in accordance with
the Tank Level 1 controls specified in subsection (c) or the Tank Level 2
controls specified in subsection (d).
A) The
hazardous secondary material in the tank has a maximum organic vapor pressure
that is less than the maximum organic vapor pressure limit for the tank's
design capacity category, as follows:
i) For
a tank design capacity equal to or greater than 151 m3, the maximum organic
vapor pressure limit for the tank is 5.2 kPa.
ii) For a tank design capacity equal to or
greater than 75 m3 but less than 151
m3, the maximum organic vapor pressure limit for the
tank is 27.6 kPa.
iii) For a tank
design capacity less than 75 m3, the maximum organic
vapor pressure limit for the tank is 76.6 kPa.
B) 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 subsection
(b)(1)(A).
2) For a tank
that manages hazardous secondary material that does not meet all of the
conditions specified in subsections (b)(1)(A) through (b)(1)(C), the
remanufacturer or other person that stores or treats the hazardous secondary
material must control air pollutant emissions from the tank by using Tank Level
2 controls in accordance with the requirements of subsection (d). An example of
tanks 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 subsection
(b)(1)(A).
c) 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 must meet the requirements specified in subsections (c)(1) through
(c)(4):
1) The remanufacturer or other person
that stores or treats that hazardous secondary material must 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
must be determined using the procedures specified in Section
721.983(c).
Thereafter, the remanufacturer or other person that stores or treats the
hazardous secondary material must 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 subsection (b)(1)(A), as applicable to the
tank.
2) The tank must be equipped
with a fixed roof designed to meet the following specifications:
A) The fixed roof and its closure devices
must 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 (e.g., a removable cover mounted on an open-top
tank) or may be an integral part of the tank structural design (e.g., a
horizontal cylindrical tank equipped with a hatch).
B) The fixed roof must 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.
C) Each opening in the
fixed roof, and any manifold system associated with the fixed roof, must
fulfill either of the following requirements:
i) It must be 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;
or
ii) It must be connected by a
closed-vent system that is vented to a control device. The control device must
remove or destroy organics in the vent stream, and must be operating whenever
hazardous secondary material is managed in the tank, except as provided in this
subsection (c)(2)(C)(ii). During any period 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. During any
period when it is necessary to provide access to the tank for performing the
foregoing activities, 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 must promptly secure the closure device in the closed
position or reinstall the cover, as applicable, and resume operation of the
control device.
BOARD NOTE: This subsection (c)(2)(C)(ii) corresponds with
40 CFR
261.1083(c)(2)(iii)(B). The
Board combined the texts of
40 CFR
261.1083(c)(2)(iii)(B)(1) and
(c)(2)(iii)(B)(2) into this single subsection
to comport with codification requirements.
D) The fixed roof and its closure devices
must 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 must include the 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.
3) Whenever a hazardous secondary material is
in the tank, the fixed roof must be installed with each closure device secured
in the closed position, except as follows:
A)
Opening of closure devices or removal of the fixed roof is allowed at the
following times:
i) 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 must promptly secure the closure device in the
closed position or reinstall the cover, as applicable, to the tank.
ii) To remove accumulated sludge or other
residues from the bottom of tank.
B) Opening of a spring-loaded pressure-vacuum
relief valve, conservation vent, or similar type of pressure relief device
which 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 must 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 must 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.
C) Opening of a safety device, as defined in
Section
721.981, is allowed
at any time conditions require doing so to avoid an unsafe condition.
4) The remanufacturer or other
person that stores or treats the hazardous secondary material must inspect the
air emission control equipment in accordance with the following requirements.
A) The fixed roof and its closure devices
must 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, but are not limited to, 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.
B) The remanufacturer or
other person that stores or treats the hazardous secondary material must
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 must perform the inspections at least once every year except under the
special conditions provided for in subsection (l).
C) In the event that a defect is detected,
the remanufacturer or other person that stores or treats the hazardous
secondary material must repair the defect in accordance with the requirements
of subsection (k).
D) The
remanufacturer or other person that stores or treats the hazardous secondary
material must maintain a record of the inspection in accordance with the
requirements specified in Section
721.989(b).
d) Remanufacturers or
other persons that store or treat the hazardous secondary material controlling
air pollutant emissions from a tank using Tank Level 2 controls must use one of
the following tanks:
1) A fixed-roof tank
equipped with an internal floating roof in accordance with the requirements
specified in subsection (e);
2) A
tank equipped with an external floating roof in accordance with the
requirements specified in subsection (f);
3) A tank vented through a closed-vent system
to a control device in accordance with the requirements specified in subsection
(g);
4) A pressure tank designed
and operated in accordance with the requirements specified in subsection (h);
or
5) 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 subsection
(i).
e) 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 must meet the requirements specified in
subsections (e)(1) through (e)(3).
1) The
tank must be equipped with a fixed roof and an internal floating roof in
accordance with the following requirements:
A) The internal floating roof must be
designed to float on the liquid surface except when the floating roof must be
supported by the leg supports.
B)
The internal floating roof must be equipped with a continuous seal between the
wall of the tank and the floating roof edge that meets either of the following
requirements:
i) A single continuous seal
that is either a liquid-mounted seal or a metallic shoe seal, as defined in
Section 721.981; or
ii) Two
continuous seals mounted one above the other. The lower seal may be a
vapor-mounted seal.
C)
The internal floating roof must meet the following specifications:
i) Each opening in a noncontact internal
floating roof except for automatic bleeder vents (vacuum breaker vents) and the
rim space vents is to provide a projection below the liquid surface.
ii) Each opening in the internal floating
roof must 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.
iii)
Each penetration of the internal floating roof for the purpose of sampling must
have a slit fabric cover that covers at least 90 percent of the
opening.
iv) Each automatic bleeder
vent and rim space vent must be gasketed.
v) Each penetration of the internal floating
roof that allows for passage of a ladder must have a gasketed sliding
cover.
vi) Each penetration of the
internal floating roof that allows for passage of a column supporting the fixed
roof must have a flexible fabric sleeve seal or a gasketed sliding
cover.
2) The
remanufacturer or other person that stores or treats the hazardous secondary
material must operate the tank in accordance with the following requirements:
A) When the floating roof is resting on the
leg supports, the process of filling, emptying, or refilling must be continuous
and must be completed as soon as practical.
B) Automatic bleeder vents are to 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.
C) Prior to filling the tank, each cover,
access hatch, gauge float well or lid on any opening in the internal floating
roof must be bolted or fastened closed (i.e., no visible gaps). Rim space vents
are to 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.
3) The
remanufacturer or other person that stores or treats the hazardous secondary
material must inspect the internal floating roof in accordance with the
procedures specified as follows:
A) The
floating roof and its closure devices must 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, but are not limited to, 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.
B) The remanufacturer or
other person that stores or treats the hazardous secondary material must
inspect the internal floating roof components as follows, except as provided in
subsection (e)(3)(C):
i) It must visually
inspect the internal floating roof components through openings on the
fixed-roof (e.g., manholes and roof hatches) at least once every 12 months
after initial fill; and
ii) It must
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.
C) As an alternative to performing
the inspections specified in subsection (e)(3)(B), for an internal floating
roof equipped with two continuous seals mounted one above the other, the
remanufacturer or other person that stores or treats the hazardous secondary
material must 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 five years.
D) Prior to each inspection required by
subsection (e)(3)(B) or (e)(3)(C), the remanufacturer or other person that
stores or treats the hazardous secondary material must notify the Agency in
advance of each inspection to provide the Agency with the opportunity to have
an observer present during the inspection. The remanufacturer or other person
that stores or treats the hazardous secondary material must notify the Agency
of the date and location of the inspection as follows:
i) Prior to each visual inspection of an
internal floating roof in a tank that has been emptied and degassed, written
notification must be prepared and sent by the remanufacturer or other person
that stores or treats the hazardous secondary material so that it is received
by the Agency at least 30 calendar days before refilling the tank, except when
an inspection is not planned as provided for in subsection
(e)(3)(D)(ii).
ii) 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 must notify
the Agency as soon as possible, but no later than seven calendar days before
refilling of 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 Agency at
least seven calendar days before refilling the tank.
E) In the event that a defect is detected,
the remanufacturer or other person that stores or treats the hazardous
secondary material must repair the defect in accordance with the requirements
of subsection (k).
F) The
remanufacturer or other person that stores or treats the hazardous secondary
material must maintain a record of the inspection in accordance with the
requirements specified in Section
721.989(b).
4) Safety devices, as defined in
Section 721.981, may be installed and operated as necessary on any tank
complying with the requirements of subsection (e).
f) 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 must meet the
requirements specified in subsections (f)(1) through (f)(3).
1) The remanufacturer or other person that
stores or treats the hazardous secondary material must design the external
floating roof in accordance with the following requirements:
A) The external floating roof must be
designed to float on the liquid surface except when the floating roof must be
supported by the leg supports.
B)
The floating roof must be equipped with two 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.
i) The primary seal must be a
liquid-mounted seal or a metallic shoe seal, as defined in 35 Ill. Adm. Code
721.981. The total area of the gaps between the tank wall and the primary seal
must not exceed 212 square centimeters (cm
2) per
meter of tank diameter, and the width of any portion of these gaps must not
exceed 3.8 centimeters (cm). If a metallic shoe seal is used for the primary
seal, the metallic shoe seal must 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
cm above the liquid surface.
ii)
The secondary seal must 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 must not exceed 21.2
cm
2 per meter of tank diameter, and the width of any
portion of these gaps must not exceed
1.3 cm.
C) The external floating roof must
meet the following specifications:
i) Except
for automatic bleeder vents (vacuum breaker vents) and rim space vents, each
opening in a noncontact external floating roof must provide a projection below
the liquid surface.
ii) Except for
automatic bleeder vents, rim space vents, roof drains, and leg sleeves, each
opening in the roof must be equipped with a gasketed cover, seal, or
lid.
iii) Each access hatch and
each gauge float well must be equipped with a cover designed to be bolted or
fastened when the cover is secured in the closed position.
iv) Each automatic bleeder vent and each rim
space vent must be equipped with a gasket.
v) Each roof drain that empties into the
liquid managed in the tank must be equipped with a slotted membrane fabric
cover that covers at least 90 percent of the area of the opening.
vi) Each unslotted and slotted guide pole
well must be equipped with a gasketed sliding cover or a flexible fabric sleeve
seal.
vii) Each unslotted guide
pole must be equipped with a gasketed cap on the end of the pole.
viii) Each slotted guide pole must be
equipped with a gasketed float or other device which closes off the liquid
surface from the atmosphere.
ix)
Each gauge hatch and each sample well must be equipped with a gasketed
cover.
2) The
remanufacturer or other person that stores or treats the hazardous secondary
material must operate the tank in accordance with the following requirements:
A) When the floating roof is resting on the
leg supports, the process of filling, emptying, or refilling must be continuous
and must be completed as soon as practical.
B) Except for automatic bleeder vents, rim
space vents, roof drains, and leg sleeves, each opening in the roof must be
secured and maintained in a closed position at all times except when the
closure device must be open for access.
C) Covers on each access hatch and each gauge
float well must be bolted or fastened when secured in the closed
position.
D) Automatic bleeder
vents must 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.
E) Rim space vents must 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.
F) The cap on the end of
each unslotted guide pole must be secured in the closed position at all times
except when measuring the level or collecting samples of the liquid in the
tank.
G) The cover on each gauge
hatch or sample well must be secured in the closed position at all times except
when the hatch or well must be opened for access.
H) Both the primary seal and the secondary
seal must completely cover the annular space between the external floating roof
and the wall of the tank in a continuous fashion except during
inspections.
3) The
remanufacturer or other person that stores or treats the hazardous secondary
material must inspect the external floating roof in accordance with the
following procedures:
A) The remanufacturer
or other person that stores or treats the hazardous secondary material must
measure the external floating roof seal gaps in accordance with the following
requirements:
i) The remanufacturer or other
person that stores or treats the hazardous secondary material must 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 five years.
ii) The remanufacturer or other person that
stores or treats the hazardous secondary material must 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.
iii) 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 must be considered an initial
operation for the purposes of subsections (f)(3)(A)(i) and
(f)(3)(A)(ii).
iv) The
remanufacturer or other person that stores or treats the hazardous secondary
material must determine the total surface area of gaps in the primary seal and
in the secondary seal individually using the procedure described in subsection
(f)(3)(D):
BOARD NOTE: The Board moved corresponding
40 CFR 261.1084(f)(3)(i)(D)(1)
through (f)(3)(i)(D)(4) to appear as
subsections (f)(3)(D)(i) through (f)(3)(D)(iv) to comport with codification
requirements.
v) In the
event that the seal gap measurements do not conform to the specifications in
subsection (f)(1)(B), the remanufacturer or other person that stores or treats
the hazardous secondary material must repair the defect in accordance with the
requirements of subsection (k).
vi)
The remanufacturer or other person that stores or treats the hazardous
secondary material must maintain a record of the inspection in accordance with
the requirements specified in Section
721.989(b).
B) The remanufacturer or other person that
stores or treats the hazardous secondary material must visually inspect the
external floating roof in accordance with the following requirements:
i) The floating roof and its closure devices
must 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, but are not limited to, 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.
ii) The remanufacturer or other person that
stores or treats the hazardous secondary material must perform an initial
inspection of the external floating 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 must perform the inspections at least once every year except for the
special conditions provided for in subsection (l).
iii) In the event that a defect is detected,
the remanufacturer or other person that stores or treats the hazardous
secondary material must repair the defect in accordance with the requirements
of subsection (k).
iv) The
remanufacturer or other person that stores or treats the hazardous secondary
material must maintain a record of the inspection in accordance with the
requirements specified in Section
721.989(b).
C) Prior to each inspection
required by subsection (f)(3)(A) or (f)(3)(B), the remanufacturer or other
person that stores or treats the hazardous secondary material must notify the
Agency in advance of each inspection to provide the Agency with the opportunity
to have an observer present during the inspection. The remanufacturer or other
person that stores or treats the hazardous secondary material must notify the
Agency of the date and location of the inspection as follows:
i) Prior to each inspection to measure
external floating roof seal gaps, as required under subsection (f)(3)(A),
written notification must be prepared and sent by the remanufacturer or other
person that stores or treats the hazardous secondary material so that it is
received by the Agency at least 30 calendar days before the date the
measurements are scheduled to be performed.
ii) Prior to each visual inspection of an
external floating roof in a tank that has been emptied and degassed, written
notification must be prepared and sent by the remanufacturer or other person
that stores or treats the hazardous secondary material so that it is received
by the Agency at least 30 calendar days before refilling the tank, except when
an inspection is not planned as provided for in subsection
(f)(3)(C)(iii).
iii) 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
must notify the Agency as soon as possible, but no later than seven calendar
days before refilling of 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 Agency at
least seven calendar days before refilling the tank.
D) Procedure for determining the total
surface area of gaps in the primary seal and in the secondary seal
individually.
i) The seal gap measurements
must be performed at one or more floating roof levels when the roof is floating
off the roof supports.
ii) Seal
gaps, if any, must be measured around the entire perimeter of the floating roof
in each place where a 0.32 -cm diameter uniform probe passes freely (without
forcing or binding against the seal) between the seal and the wall of the tank
and measure the circumferential distance of each such location.
iii) For a seal gap measured under this
subsection (f)(3), the gap surface area must be determined by using probes of
various widths to measure accurately the actual distance from the tank wall to
the seal and multiplying each such width by its respective circumferential
distance.
iv) The total gap area
must 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. These total gap areas for the primary seal and secondary
seal are then compared to the respective standards for the seal type as
specified in subsection (f)(1)(B).
BOARD NOTE: The texts of corresponding
40 CFR 261.1084(f)(3)(i)(D)(1)
through (f)(3)(i)(D)(4), which would normally
appear in subsection (f)(3)(A)(iv), but codification requirements do not allow
a fifth level of subsections. Thus, the Board has codified them to appear as
subsections (f)(3)(D)(i) through (f)(3)(D)(iv) to comport with codification
requirements.
4) Safety devices, as defined in Section
721.981, may be installed and operated as necessary on any tank complying with
the requirements of this subsection (f).
g) 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 must meet the
requirements specified in subsections (g)(1) through (g)(3).
1) The tank must be covered by a fixed roof
and vented directly through a closed-vent system to a control device in
accordance with the following requirements:
A) The fixed roof and its closure devices
must be designed to form a continuous barrier over the entire surface area of
the liquid in the tank.
B) Each
opening in the fixed roof not vented to the control device must 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 must 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
must be designed to operate with no detectable organic emissions.
C) The fixed roof and its closure devices
must 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 must 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.
D) The closed-vent
system and control device must be designed and operated in accordance with the
requirements of Section
721.987.
2) Whenever a hazardous secondary
material is in the tank, the fixed roof must 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:
A) 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:
i) To provide
access to the tank for performing routine inspection, maintenance, or other
activities needed for normal operations. Examples of activities needed for
normal operations 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 must
promptly secure the closure device in the closed position or reinstall the
cover, as applicable, to the tank.
ii) To remove accumulated sludge or other
residues from the bottom of a tank.
B) Opening of a safety device, as defined in
Section 721.981, is allowed at any time conditions require doing so to avoid an
unsafe condition.
3) The
remanufacturer or other person that stores or treats the hazardous secondary
material must inspect and monitor the air emission control equipment in
accordance with the following procedures:
A)
The fixed roof and its closure devices must 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, but are not limited to, 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.
B) The closed-vent system and control device
must be inspected and monitored by the remanufacturer or other person that
stores or treats the hazardous secondary material in accordance with the
procedures specified in Section 721.987.
C) The remanufacturer or other person that
stores or treats the hazardous secondary material must 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 must perform the
inspections at least once every year except for the special conditions provided
for in subsection (l).
D) In the
event that a defect is detected, the remanufacture or other person that stores
or treats the hazardous secondary material must repair the defect in accordance
with the requirements of subsection (k).
E) The remanufacturer or other person that
stores or treats the hazardous secondary material must maintain a record of the
inspection in accordance with the requirements specified in Section
721.989(b).
h) The
remanufacturer or other person that stores or treats the hazardous secondary
material who controls air pollutant emissions by using a pressure tank must
meet the following requirements:
1) The tank
must 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.
2) All tank openings must
be equipped with closure devices designed to operate with no detectable organic
emissions as determined using the procedure specified in Section
721.983(d).
3) Whenever a hazardous secondary material is
in the tank, the tank must be operated as a closed system that does not vent to
the atmosphere, except under either or the following conditions described in
subsection (h)(3)(A) or (h)(3)(B).
A) At
those times when opening of a safety device, as defined in Section 721.981, is
required to avoid an unsafe condition.
B) 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 of
Section 721.987.
i) 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 must meet the following requirements:
1) The tank must be located inside an
enclosure. The enclosure must 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" in
appendix B to
40
CFR
52.741, incorporated by reference in 35
Ill. Adm. Code
720.111. 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 must 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 annually
thereafter.
2) The enclosure must
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 Section
721.987.
3) Safety devices, as
defined in Section 721.981, may be installed and operated as necessary on any
enclosure, closed-vent system, or control device used to comply with the
requirements of subsections (i)(1) and (i)(2).
4) The remanufacturer or other person that
stores or treats the hazardous secondary material must inspect and monitor the
closed-vent system and control device, as specified in Section 721.987.
j) The remanufacturer or
other person that stores or treats the hazardous secondary material must
transfer hazardous secondary material to a tank subject to this section in
accordance with the following requirements:
1) Transfer of hazardous secondary material,
except as provided in subsection (j)(2), to the tank from another tank subject
to this section must be conducted using continuous hard-piping or another
closed system that does not allow exposure of the hazardous secondary material
to the atmosphere. For the purpose of complying with this provision, an
individual drain system is considered to be a closed system when it meets the
requirements of subpart RR of 40 CFR
63 (National Emission Standards for
Individual Drain Systems), incorporated by reference in 35 Ill. Adm. Code
720.111.
2) The requirements of
subsection (j)(1) do not apply when transferring a hazardous secondary material
to the tank under any of the following conditions:
A) The hazardous secondary material meets the
average VO concentration conditions specified in Section
721.982(c)(1)
at the point of material origination.
B) The hazardous secondary material has been
treated by an organic destruction or removal process to meet the requirements
in Section
721.982(c)(2).
C) The hazardous secondary material meets the
requirements of Section
721.982(c)(4).
k) The remanufacturer
or other person that stores or treats the hazardous secondary material must
repair each defect detected during an inspection performed in accordance with
the requirements of subsection (c)(4), (e)(3), (f)(3), or (g)(3), as follows:
1) The remanufacturer or other person that
stores or treats the hazardous secondary material must make first efforts at
repair of the defect no later than five calendar days after detection, and
repair must be completed as soon as possible, but no later than 45 calendar
days after detection, except as provided in subsection (k)(2).
2) 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 must 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 must be
completed before the process or unit resumes operation.
l) Following the initial inspection and
monitoring of the cover as required by the applicable provisions of this
Subpart CC, subsequent inspection and monitoring may be performed at intervals
longer than one year under the following special conditions:
1) If 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:
A) Prepare a written explanation for the
cover stating the reasons why the cover is unsafe to visually inspect or to
monitor, if required.
B) Develop
and implement a written plan and schedule to inspect and monitor the cover,
using the procedures specified in the applicable section of this Subpart CC, as
frequently as practicable during those times when a worker can safely access
the cover.
2) If 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 (e.g., fill
ports, access hatches, gauge wells, etc.) that are located on or above the
ground surface.