(A) This rule applies to the control of
air pollutant emissions from tanks for which paragraph (B) of rule 3745-205-82
of the Administrative Code references the use of this rule for such air
emission control.
(B) The owner or operator shall control
air pollutant emissions from each tank subject to this rule in accordance with
the following requirements as applicable:
(1) For a tank that
manages hazardous waste that meets all of the conditions specified in
paragraphs (B)(1)(a) to (B)(1)(c) of this rule, the owner or operator shall
control air pollutant emissions from the tank in accordance with the "Tank
Level 1" controls specified in paragraph (C) of this rule or the
"Tank Level 2" controls specified in paragraph (D) of this
rule.
(a) The hazardous waste in the tank has a maximum organic
vapor pressure which 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 one hundred fifty-one cubic meters
(m3), the maximum organic vapor
pressure limit for the tank is 5.2 kilopascals (kPa).
(ii) For a tank design
capacity equal to or greater than seventy-five m3 but less than one hundred fifty-one
m3, the maximum organic vapor
pressure limit for the tank is 27.6 kPa.
(iii) For a tank design
capacity less than seventy-five m3, the maximum organic vapor pressure limit for
the tank is 76.6 kPa.
(b) The hazardous waste in the tank is not heated by the
owner or operator to a temperature that is greater than the temperature at
which the maximum organic vapor pressure of the hazardous waste is determined
for the purpose of complying with paragraph (B)(1)(a) of this
rule.
(c) The hazardous waste in the tank is not treated by the
owner or operator using a "waste stabilization process," as defined
in rule 3745-256-81 of the Administrative Code.
(2) For a tank that
manages hazardous waste that does not meet all of the conditions specified in
paragraphs (B)(1)(a) to (B)(1)(c) of this rule, the owner or operator shall
control air pollutant emissions from the tank by using "Tank Level 2"
controls in accordance with the requirements of paragraph (D) of this rule.
Examples of tanks required to use "Tank Level 2" controls include a
tank used for a waste stabilization process, and a tank for which the hazardous
waste 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 paragraph (B)(1)(a) of this
rule.
(C) Owners and operators controlling air
pollutant emissions from a tank using "Tank Level 1" controls shall
meet the requirements specified in paragraphs (C)(1) to (C)(4) of this
rule:
(1) The owner or operator
shall determine the maximum organic vapor pressure for a hazardous waste to be
managed in the tank using "Tank Level 1" controls before the first
time the hazardous waste is placed in the tank. The maximum organic vapor
pressure shall be determined using the procedures specified in paragraph (C) of
rule 3745-205-83 of the Administrative Code. Thereafter, the owner or operator
shall perform a new determination whenever changes to the hazardous waste
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
paragraph (B)(1)(a) of this rule, as applicable to the tank.
(2) The tank shall be
equipped with a fixed roof designed to meet the following
specifications:
(a) The fixed roof and the fixed roof's closure
devices shall be designed to form a continuous barrier over the entire surface
area of the hazardous waste 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 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.
(c) Each opening in the fixed roof, and any manifold system
associated with the fixed roof, shall be either:
(i) 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) 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 waste is managed in the tank, except as provided for in paragraphs
(C)(2)(c)(ii)(a) and (C)(2)(c)(ii)(b) of this rule.
(a) During periods when
it is necessary to provide access to the tank for performing the activities of
paragraph (C)(2)(c)(ii)(b) of this rule, 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 owner or operator shall promptly secure the
closure device in the closed position or reinstall the cover, as applicable,
and resume operation of the control device.
(b) 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.
(d) The fixed roof and the fixed roof's closure
devices shall be made of suitable materials that will minimize exposure of the
hazardous waste to the atmosphere, to the extent practical, and will maintain
the integrity of the fixed roof and closure devices throughout the intended
service life of the fixed roof and closure devices. 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 waste 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
waste is in the tank, the fixed roof shall 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 owner or operator shall 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 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 owner or operator 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
rule 3745-256-81 of the Administrative Code, is allowed at any time conditions
require doing so to avoid an unsafe condition.
(4) The owner or operator
shall inspect the air emission control equipment in accordance with the
following requirements:
(a) The fixed roof and the fixed roof's closure
devices shall be visually inspected by the owner or operator 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 owner or operator shall perform an initial
inspection of the fixed roof and the fixed roof's closure devices on or
before the date that the tank becomes subject to this rule. Thereafter, the
owner or operator shall perform the inspections at least once every year except
under the special conditions provided for in paragraph (L) of this
rule.
(c) In the event that a defect is detected, the owner or
operator shall repair the defect in accordance with the requirements of
paragraph (K) of this rule.
(d) The owner or operator shall maintain a record of the
inspection in accordance with the requirements specified in paragraph (B) of
rule 3745-205-89 of the Administrative Code.
(D) Owners and operators controlling air
pollutant emissions from a tank using "Tank Level 2" controls shall
use one of the following tanks:
(1) A fixed-roof tank
equipped with an internal floating roof in accordance with the requirements
specified in paragraph (E) of this rule;
(2) A tank equipped with
an external floating roof in accordance with the requirements specified in
paragraph (F) of this rule;
(3) A tank vented through
a closed-vent system to a control device in accordance with the requirements
specified in paragraph (G) of this rule;
(4) A pressure tank
designed and operated in accordance with the requirements specified in
paragraph (H) of this rule; 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
paragraph (I) of this rule.
(E) The owner or operator who controls
air pollutant emissions from a tank using a fixed roof with an internal
floating roof shall meet the requirements specified in paragraphs (E)(1) to
(E)(3) of this rule.
(1) The tank shall be
equipped with a fixed roof and an internal floating roof in accordance with the
following requirements:
(a) 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.
(b) The internal floating roof shall 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 rule 3745-256-81 of the
Administrative Code; or
(ii) Two continuous seals
mounted one above the other. The lower seal may be a vapor-mounted
seal.
(c) The internal floating roof shall meet the following
specifications:
(i) Each opening in a
non-contact 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 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.
(iii) Each penetration of
the internal floating roof for the purpose of sampling shall have a slit fabric
cover that covers at least ninety per cent of the opening.
(iv) Each automatic
bleeder vent and rim space vent shall be gasketed.
(v) Each penetration of
the internal floating roof that allows for passage of a ladder shall have a
gasketed sliding cover.
(vi) 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.
(2) The owner or operator
shall 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 shall be continuous and shall 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 shall 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 owner or operator
shall inspect the internal floating roof in accordance with the procedures
specified as follows:
(a) The floating roof and the floating roof's closure
devices shall be visually inspected by the owner or operator 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 waste surface from the atmosphere; or the
slotted membrane has more than ten per cent open area.
(b) The owner or operator shall inspect the internal
floating roof components as follows except as provided in paragraph (E)(3)(c)
of this rule:
(i) Visually inspect the
internal floating roof components through openings on the fixed-roof (e.g.,
manholes and roof hatches) at least once every twelve months after initial
fill; and
(ii) 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 ten years.
(c) As an alternative to performing the inspections
specified in paragraph (E)(3)(b) of this rule for an internal floating roof
equipped with two continuous seals mounted one above the other, the owner or
operator 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 five years.
(d) Prior to each inspection required by paragraph
(E)(3)(b) or (E)(3)(c) of this rule, the owner or operator shall notify the
director in advance of each inspection to provide the director with the
opportunity to have an observer present during the inspection. The owner or
operator shall notify the director 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 shall be prepared and sent by the owner or
operator so that the notification is received by the director at least thirty
calendar days before refilling the tank except when an inspection is not
planned as provided for in paragraph (E)(3)(d)(ii) of this rule.
(ii) When a visual
inspection is not planned and the owner or operator could not have known about
the inspection thirty calendar days before refilling the tank, the owner or
operator shall notify the director 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 the notification
is received by the director at least seven calendar days before refilling the
tank.
(e) In the event that a defect is detected, the owner or
operator shall repair the defect in accordance with the requirements of
paragraph (K) of this rule.
(f) The owner or operator shall maintain a record of the
inspection in accordance with the requirements specified in paragraph (B) of
rule 3745-205-89 of the Administrative Code.
(4) Safety devices may be
installed and operated as necessary on any tank complying with the requirements
of paragraph (E) of this rule.
(F) The owner or operator who controls
air pollutant emissions from a tank using an external floating roof shall meet
the requirements specified in paragraphs (F)(1) to (F)(3) of this
rule.
(1) The owner or operator
shall design the external floating roof in accordance with the following
requirements:
(a) The external floating roof shall be designed to float
on the liquid surface except when the floating roof shall be supported by the
leg supports.
(b) The floating roof shall 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
shall be a liquid-mounted seal or a metallic shoe seal. The total area of the
gaps between the tank wall and the primary seal shall not exceed two hundred
twelve square centimeters (cm2)
per meter of tank diameter, and the width of any portion of these gaps shall
not exceed 3.8 centimeters (cm). 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 sixty-one cm above the liquid surface.
(ii) 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 shall not exceed 21.2 cm2 per meter of tank diameter, and the width of
any portion of these gaps shall not exceed 1.3 cm.
(c) The external floating roof shall meet the following
specifications:
(i) Except for automatic
bleeder vents (vacuum breaker vents) and rim space vents, each opening in a
non-contact external floating roof shall 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 shall be equipped with a gasketed cover, seal, or lid.
(iii) 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.
(iv) Each automatic
bleeder vent and each rim space vent shall be equipped with a
gasket.
(v) 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 ninety per cent of the area of the
opening.
(vi) Each unslotted and
slotted guide pole well shall be equipped with a gasketed sliding cover or a
flexible fabric sleeve seal.
(vii) Each unslotted
guide pole shall be equipped with a gasketed cap on the end of the
pole.
(viii) Each slotted guide
pole shall 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 shall be equipped with a gasketed cover.
(2) The owner or operator
shall 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 shall be continuous and shall 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 shall be secured and
maintained in a closed position at all times except when the closure device
shall be open for access.
(c) Covers on each access hatch and each gauge float well
shall be bolted or fastened when secured in the closed position.
(d) 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.
(e) 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.
(f) 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.
(g) The cover on each gauge hatch or sample well shall be
secured in the closed position at all times except when the hatch or well shall
be opened for access.
(h) 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 except during
inspections.
(3) The owner or operator
shall inspect the external floating roof in accordance with the procedures
specified as follows:
(a) The owner or operator shall measure the external
floating roof seal gaps in accordance with the following
requirements:
(i) The owner or operator
shall perform measurements of gaps between the tank wall and the primary seal
within sixty calendar days after initial operation of the tank following
installation of the floating roof and, thereafter, at least once every five
years.
(ii) The owner or
operator shall perform measurements of gaps between the tank wall and the
secondary seal within sixty 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 waste for a period of one year or more, subsequent introduction
of hazardous waste into the tank shall be considered an initial operation for
the purposes of paragraphs (F)(3)(a)(i) and (F)(3)(a)(ii) of this
rule.
(iv) The owner or
operator shall determine the total surface area of gaps in the primary seal and
in the secondary seal individually using the following procedure:
(a) The seal gap
measurements shall be performed at one or more floating roof levels when the
roof is floating off the roof supports.
(b) Seal gaps, if any,
shall 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.
(c) For a seal gap
measured under paragraph (F)(3) of this rule, 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 such width by its
respective circumferential distance.
(d) 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. 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 paragraph (F)(1)(b) of this rule.
(v) In the event that the
seal gap measurements do not conform to the specifications in paragraph
(F)(1)(b) of this rule, the owner or operator shall repair the defect in
accordance with the requirements of paragraph (K) of this rule.
(vi) The owner or
operator shall maintain a record of the inspection in accordance with the
requirements specified in paragraph (B) of rule 3745-205-89 of the
Administrative Code.
(b) The owner or operator shall visually inspect the
external floating roof in accordance with the following
requirements:
(i) The floating roof and
the floating roof's closure devices shall be visually inspected by the
owner or operator 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 owner or
operator shall perform an initial inspection of the external floating roof and
the external floating roof's closure devices on or before the date that
the tank becomes subject to this rule. Thereafter, the owner or operator shall
perform the inspections at least once every year except for the special
conditions provided for in paragraph (L) of this rule.
(iii) In the event that a
defect is detected, the owner or operator shall repair the defect in accordance
with the requirements of paragraph (K) of this rule.
(iv) The owner or
operator shall maintain a record of the inspection in accordance with the
requirements specified in paragraph (B) of rule 3745-205-89 of the
Administrative Code.
(c) Prior to each inspection required by paragraph
(F)(3)(a) or (F)(3)(b) of this rule, the owner or operator shall notify the
director in advance of each inspection to provide the director with the
opportunity to have an observer present during the inspection. The owner or
operator shall notify the director 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
paragraph (F)(3)(a) of this rule, written notification shall be prepared and
sent by the owner or operator so that the notification is received by the
director at least thirty 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 shall be prepared and sent by the owner or
operator so that the notification is received by the director at least thirty
calendar days before refilling the tank except when an inspection is not
planned as provided for in paragraph (F)(3)(c)(iii) of this rule.
(iii) When a visual
inspection is not planned and the owner or operator could not have known about
the inspection thirty calendar days before refilling the tank, the owner or
operator shall notify the director 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 the notification
is received by the director at least seven calendar days before refilling the
tank.
(4) Safety devices may be
installed and operated as necessary on any tank complying with the requirements
of paragraph (F) of this rule.
(G) The owner or operator who controls
air pollutant emissions from a tank by venting the tank to a control device
shall meet the requirements specified in paragraphs (G)(1) to (G)(3) of this
rule.
(1) The tank shall 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 the fixed roof's closure
devices shall 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 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.
(c) The fixed roof and the fixed roof's closure
devices shall be made of suitable materials that will minimize exposure of the
hazardous waste to the atmosphere, to the extent practical, and will maintain
the integrity of the fixed roof and closure devices throughout the intended
service life of the fixed roof and closure devices. 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.
(d) The closed-vent system and control device shall be
designed and operated in accordance with the requirements of rule 3745-205-87
of the Administrative Code.
(2) Whenever a hazardous
waste 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:
(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 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 owner or operator shall 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 is allowed at any time
conditions require doing so to avoid an unsafe condition.
(3) The owner or operator
shall inspect and monitor the air emission control equipment in accordance with
the following procedures:
(a) The fixed roof and the fixed roof's closure
devices shall be visually inspected by the owner or operator 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 shall be
inspected and monitored by the owner or operator in accordance with the
procedures specified in rule 3745-205-87 of the Administrative
Code.
(c) The owner or operator shall perform an initial
inspection of the air emission control equipment on or before the date that the
tank becomes subject to this rule. Thereafter, the owner or operator shall
perform the inspections at least once every year except for the special
conditions provided for in paragraph (L) of this rule.
(d) In the event that a defect is detected, the owner or
operator shall repair the defect in accordance with the requirements of
paragraph (K) of this rule.
(e) The owner or operator shall maintain a record of the
inspection in accordance with the requirements specified in paragraph (B) of
rule 3745-205-89 of the Administrative Code.
(H) The owner or operator who controls
air pollutant emissions by using a pressure tank shall meet the following
requirements:
(1) 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 the tank's design
capacity.
(2) All tank openings
shall be equipped with closure devices designed to operate with no detectable
organic emissions as determined using the procedure specified in paragraph (D)
of rule 3745-205-83 of the Administrative Code.
(3) Whenever a hazardous
waste is in the tank, the tank shall be operated as a closed system that does
not vent to the atmosphere except under either of the following conditions as
specified in paragraph (H)(3)(a) or (H)(3)(b) of this rule.
(a) At those times when opening of a safety device 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 rule
3745-205-87 of the Administrative Code.
(I) The owner or operator who controls
air pollutant emissions by using an enclosure vented through a closed-vent
system to an enclosed combustion control device shall meet the requirements
specified in paragraphs (I)(1) to (I)(4) of this rule.
(1) The tank shall be
located inside an enclosure. 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" under 40 CFR 52.741 appendix B. 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 owner or operator shall perform the verification procedure
for the enclosure as specified in section 5.0 to "Procedure T- Criteria
for and Verification of a Permanent or Temporary Total Enclosure"
initially when the enclosure is first installed and, thereafter,
annually.
(2) 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 rule 3745-205-87 of
the Administrative Code.
(3) Safety devices may be
installed and operated as necessary on any enclosure, closed-vent system, or
control device used to comply with the requirements of paragraphs (I)(1) and
(I)(2) of this rule.
(4) The owner or operator
shall inspect and monitor the closed-vent system and control device as
specified in rule 3745-205-87 of the Administrative Code.
(J) The owner or operator shall transfer
hazardous waste to a tank subject to this rule in accordance with the following
requirements:
(1) Transfer of hazardous
waste, except as provided in paragraph (J)(2) of this rule, to the tank from
another tank subject to this rule or from a surface impoundment subject to rule
3745-205-85 of the Administrative Code shall be conducted using continuous
hard-piping or another closed system that does not allow exposure of the
hazardous waste to the atmosphere. For the purpose of complying with this
provision, an individual drain system is considered to be a closed system when
the individual drain system meets the requirements of 40 CFR Part 63 subpart
RR- "National Emission Standards for Individual Drain
Systems."
(2) The requirements of
paragraph (J)(1) of this rule do not apply when transferring a hazardous waste
to the tank under any of the following conditions:
(a) The hazardous waste meets the average VO concentration
conditions specified in paragraph (C)(1) of rule 3745-205-82 of the
Administrative Code at the point of waste origination.
(b) The hazardous waste has been treated by an organic
destruction or removal process to meet the requirements in paragraph (C)(2) of
rule 3745-205-82 of the Administrative Code.
(c) The hazardous waste meets the requirements of paragraph
(C)(4) of rule 3745-205-82 of the Administrative Code.
(K) The owner or operator shall repair
each defect detected during an inspection performed in accordance with the
requirements of paragraph (C)(4), (E)(3), (F)(3), or (G)(3) of this rule as
follows:
(1) The owner or operator
shall make first efforts at repair of the defect no later than five calendar
days after detection, and repair shall be completed as soon as possible but no
later than forty-five calendar days after detection except as provided in
paragraph (K)(2) of this rule.
(2) Repair of a defect
may be delayed beyond forty-five calendar days if the owner or operator
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 waste normally managed in the tank. In this case,
the owner or operator shall repair the defect the next time the process or unit
that is generating the hazardous waste managed in the tank stops operation.
Repair of the defect shall 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 rules
3745-205-80 to 3745-205-90 of the Administrative Code, subsequent inspection
and monitoring may be performed at intervals longer than one year under the
following special conditions:
(1) In the case when
inspecting or monitoring the cover would expose a worker to dangerous,
hazardous, or other unsafe conditions, then the owner or operator 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
rule in rules 3745-205-80 to 3745-205-90 of the Administrative Code, as
frequently as practicable during those times when a worker can safely access
the cover.
(2) In the case when a
tank is buried partially or entirely underground, an owner or operator is
required to inspect and monitor, as required by the applicable provisions of
this rule, 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.
[Comment: For dates of non-regulatory government
publications, publications of recognized organizations and associations,
federal rules, and federal statutory provisions referenced in this rule, see
rule 3745-50-11 of the Administrative Code titled "Incorporated by
reference."]