Ohio Admin. Code 3745-51-733 - Closed-vent systems and control devices - process vents
(A)
(1) The remanufacturer or other person who
stores or treats the hazardous secondary materials in hazardous secondary
material management units using closed-vent systems and control devices used to
comply with Chapter 3745-51 of the Administrative Code shall comply with this
rule.
(2) [Reserved.]
(B) A control device involving
vapor recovery (e.g., a condenser or adsorber) shall be designed and operated
to recover the organic vapors vented to the control device with an efficiency
of ninety-five weight per cent or greater unless the total organic emission
limits of paragraph (A)(1) of rule
3745-51-732 of the
Administrative Code for all affected process vents can be attained at an
efficiency less than ninety-five weight per cent.
(C) An enclosed combustion device (e.g., a
vapor incinerator, boiler, or process heater) shall be designed and operated to
reduce the organic emissions vented to the enclosed combustion device by
ninety-five weight per cent or greater; to achieve a total organic compound
concentration of twenty parts per million by volume (ppmv), expressed as the
sum of the actual compounds, not carbon equivalents, on a dry basis corrected
to three per cent oxygen; or to provide a minimum residence time of 0.5 seconds
at a minimum temperature of seven hundred sixty degrees Celsius. If a boiler or
process heater is used as the control device, then the vent stream shall be
introduced into the flame zone of the boiler or process heater.
(D)
(1) A
flare shall be designed for and operated with no visible emissions as
determined by the methods specified in paragraph (E)(1) of this rule, except
for periods not to exceed a total of five minutes during any two consecutive
hours.
(2) A flare shall be
operated with a flame present at all times, as determined by the methods
specified in paragraph (F)(2)(c) of this rule.
(3) A flare shall be used only if the net
heating value of the gas being combusted is 11.2 MegaJoules per standard cubic
meter of gas (MJ/scm) [three hundred British thermal units per standard cubic
foot (Btu/scf)] or greater if the flare is steam-assisted or air-assisted; or
if the net heating value of the gas being combusted is 7.45 MJ/scm (two hundred
Btu/scf) or greater if the flare is non-assisted. The net heating value of the
gas being combusted shall be determined by the methods specified in paragraph
(E)(2) of this rule.
(4)
(a) A steam-assisted or non-assisted flare
shall be designed for and operated with an exit velocity, as determined by the
methods specified in paragraph (E)(3) of this rule, less than 18.3 meters per
second (m/s) [sixty feet per second (ft/s)], except as provided in paragraph
(D)(4)(b) and paragraph (D)(4)(c) of this rule.
(b) A steam-assisted or non-assisted flare
designed for and operated with an exit velocity, as determined by the methods
specified in paragraph (E)(3) of this rule, equal to or greater than 18.3 m/s
(sixty ft/s) but less than one hundred twenty-two m/s (four hundred ft/s) is
allowed if the net heating value of the gas being combusted is greater than
37.3 MJ/scm (one thousand Btu/scf).
(c) A steam-assisted or non-assisted flare
designed for and operated with an exit velocity, as determined by the methods
specified in paragraph (E)(3) of this rule, less than the velocity, Vmax, as
determined by the method specified in paragraph (E)(4) of this rule and less
than one hundred twenty-two m/s (four hundred ft/s) is allowed.
(5) An air-assisted flare shall be
designed and operated with an exit velocity less than the velocity, Vmax, as
determined by the method specified in paragraph (E)(5) of this rule.
(6) A flare used to comply with this rule
shall be steam-assisted, air-assisted, or non-assisted.
(E)
(1)
Reference method 22 in 40 CFR Part 60 shall be used to determine the compliance
of a flare with the visible emission provisions of rules
3745-51-730 to
3745-51-735 of the
Administrative Code. The observation period is two hours and shall be used
according to method 22.
(2) The net
heating value of the gas being combusted in a flare shall be calculated using
the following equation:
Click to view image
Where:
HT = Net heating value of the sample, MJ/scm; where the net enthalpy per mole of offgas is based on combustion at twenty-five degrees Celsius and seven hundred sixty millimeters of mercury (mm Hg), but the standard temperature for determining the volume corresponding to one mole (mol) is twenty degrees Celsius;
K = Constant, 1.74 x 10-7 (1/ppm) (g mol/scm) (MJ/kcal) where standard temperature for (g mol/scm) is twenty degrees Celsius; ppm means parts per million, g mol/scm means gram mole per standard cubic meter of gas, MJ/kcal means MegaJoules per kilocalorie;
Ci = Concentration of sample component i in ppm on a wet basis, as measured for organics by reference method 18 in 40 CFR Part 60 and measured for hydrogen and carbon monoxide by ASTM D1946-82; and
Hi = Net heat of combustion of sample component i, kcal/nine mol at twenty-five degrees Celsius and seven hundred sixty mm Hg. The heats of combustion may be determined using ASTM D2382-83 if published values are not available or cannot be calculated.
(3) The actual exit velocity of a flare shall
be determined by dividing the volumetric flow rate (in units of standard
temperature and pressure), as determined by reference method 2, method 2A,
method 2C, or method 2D in 40 CFR Part 60 as appropriate, by the unobstructed
(free) cross-sectional area of the flare tip.
(4) The maximum allowed velocity in m/s,
Vmax, for a flare complying with paragraph (D)(4)(c) of
this rule shall be determined by the following equation:
Click to view image
Where:
28. 8 = Constant
31.7 = Constant,
HT = The net heating value as determined in paragraph (E)(2) of this rule.
(5) The maximum allowed velocity in m/s, V
max, for an air-assisted flare shall be determined by the following equation:
Vmax = 8.706 + 0.7084(HT)
Where:
8. 706 = Constant,
0.7084 = Constant,
HT = The net heating value as determined in paragraph (E)(2) of this rule.
(F) The remanufacturer or other person who
stores or treats the hazardous secondary material shall monitor and inspect
each control device required to comply with this rule to ensure proper
operation and maintenance of the control device by implementing the following
requirements:
(1) Install, calibrate,
maintain, and operate according to the manufacturer's specifications a flow
indicator that provides a record of vent stream flow from each affected process
vent to the control device at least once every hour. The flow indicator sensor
shall be installed in the vent stream at the nearest feasible point to the
control device inlet but before the point at which the vent streams are
combined.
(2) Install, calibrate,
maintain, and operate according to the manufacturer's specifications a device
to continuously monitor control device operation as specified where:
(a) For a thermal vapor incinerator, a
temperature monitoring device equipped with a continuous recorder. The device
shall have an accuracy of plus or minus one per cent of the temperature being
monitored in degrees Celsius or plus or minus 0.5 degrees Celsius, whichever is
greater. The temperature sensor shall be installed at a location in the
combustion chamber downstream of the combustion zone.
(b) For a catalytic vapor incinerator, a
temperature monitoring device equipped with a continuous recorder. The device
shall be capable of monitoring temperature at two locations and have an
accuracy of plus or minus one per cent of the temperature being monitored in
degrees Celsius or plus or minus 0.5 degrees Celsius, whichever is greater. One
temperature sensor shall be installed in the vent stream at the nearest
feasible point to the catalyst bed inlet and a second temperature sensor shall
be installed in the vent stream at the nearest feasible point to the catalyst
bed outlet.
(c) For a flare, a heat
sensing monitoring device equipped with a continuous recorder that indicates
the continuous ignition of the pilot flame.
(d) For a boiler or process heater having a
design heat input capacity less than forty-four megawatts (MW), a temperature
monitoring device equipped with a continuous recorder. The device shall have an
accuracy of plus or minus one per cent of the temperature being monitored in
degrees Celsius or plus or minus 0.5 degrees Celsius, whichever is greater. The
temperature sensor shall be installed at a location in the furnace downstream
of the combustion zone.
(e) For a
boiler or process heater having a design heat input capacity greater than or
equal to forty-four MW, a monitoring device equipped with a continuous recorder
to measure a parameters that indicates good combustion operating practices are
being used.
(f) For a condenser,
either:
(i) A monitoring device equipped with
a continuous recorder to measure the concentration level of the organic
compounds in the exhaust vent stream from the condenser; or
(ii) A temperature monitoring device equipped
with a continuous recorder. The device shall be capable of monitoring
temperature with an accuracy of plus or minus one per cent of the temperature
being monitored in degrees Celsius or plus or minus 0.5 degrees Celsius,
whichever is greater. The temperature sensor shall be installed at a location
in the exhaust vent stream from the condenser exit (i.e., product
side).
(g) For a carbon
adsorption system that regenerates the carbon bed directly in the control
device such as a fixed-bed carbon adsorber, either:
(i) A monitoring device equipped with a
continuous recorder to measure the concentration level of the organic compounds
in the exhaust vent stream from the carbon bed; or
(ii) A monitoring device equipped with a
continuous recorder to measure a parameter that indicates the carbon bed is
regenerated on a regular, predetermined time cycle.
(3) Inspect the readings from each
monitoring device required by paragraphs (F)(1) and (F)(2) of this rule at
least once each operating day to check control device operation and, if
necessary, immediately implement the corrective measures necessary to ensure
the control device operates in compliance with the requirements of this
rule.
(G) A
remanufacturer or other person who stores or treats hazardous secondary
material in a hazardous secondary material management unit using a carbon
adsorption system such as a fixed-bed carbon adsorber that regenerates the
carbon bed directly onsite
on-site in the control device shall replace the
existing carbon in the control device with fresh carbon at a regular,
predetermined time interval that is no longer than the carbon service life
established as a requirement of paragraph (B)(4)(c)(vi) of rule
3745-51-735 of the
Administrative Code.
(H) A
remanufacturer or other person who stores or treats hazardous secondary
material in a hazardous secondary material management unit using a carbon
adsorption system such as a carbon canister that does not regenerate the carbon
bed directly onsite
on-site in the control device shall replace the
existing carbon in the control device with fresh carbon on a regular basis by
using one of the following procedures:
(1)
Monitor the concentration level of the organic compounds in the exhaust vent
stream from the carbon adsorption system on a regular schedule, and replace the
existing carbon with fresh carbon immediately when carbon breakthrough is
indicated. The monitoring frequency shall be daily or at an interval no greater
than twenty per cent of the time required to consume the total carbon working
capacity established as a requirement of paragraph (B)(4)(c)(vii) of rule
3745-51-735 of the
Administrative Code, whichever is longer.
(2) Replace the existing carbon with fresh
carbon at a regular, predetermined time interval that is less than the design
carbon replacement interval established as a requirement of paragraph
(B)(4)(c)(vii) of rule
3745-51-735 of the
Administrative Code.
(I)
An alternative operational or process parameter may be monitored if it can be
demonstrated that another parameter will ensure that the control device is
operated in conformance with these standards and the control device's design
specifications.
(J) A
remanufacturer or other person who stores or treats hazardous secondary
material at an affected facility seeking to comply with Chapter 3745-51 of the
Administrative Code by using a control device other than a thermal vapor
incinerator, catalytic vapor incinerator, flare, boiler, process heater,
condenser, or carbon adsorption system is required to develop documentation
including sufficient information to describe the control device operation and
identify the process parameter or parameters that indicate proper operation and
maintenance of the control device.
(K) A closed-vent system shall meet either of
the following design requirements:
(1) A
closed-vent system shall be designed to operate with no detectable emissions,
as indicated by an instrument reading of less than five hundred ppmv
(parts per million by volume) above
background as determined by the procedure in paragraph (B) of rule
3745-51-734 of the
Administrative Code, and by visual inspections; or
(2) A closed-vent system shall be designed to
operate at a pressure below atmospheric pressure. The system shall be equipped
with at least one pressure gauge or other pressure measurement device that can
be read from a readily accessible location to verify that negative pressure is
being maintained in the closed-vent system when the control device is
operating.
(L) The
remanufacturer or other person who stores or treats the hazardous secondary
material shall monitor and inspect each closed-vent system required to comply
with this rule to ensure proper operation and maintenance of the closed-vent
system by implementing the following requirements:
(1) Each closed-vent system that is used to
comply with paragraph (K)(1) of this rule shall be inspected and monitored in
accordance with the following requirements:
(a) An initial leak detection monitoring of
the closed-vent system shall be conducted by the remanufacturer or other person
who stores or treats the hazardous secondary material on or before the date
that the system becomes subject to this rule. The remanufacturer or other
person who stores or treats the hazardous secondary material shall monitor the
closedvent system components and connections using the procedures specified in
paragraph (B) of rule
3745-51-734 of the
Administrative Code to demonstrate that the closed-vent system operates with no
detectable emissions, as indicated by an instrument reading of less than five
hundred ppmv above background.
(b)
After initial leak detection monitoring required in this paragraph (L)(1)(b) of
this rule, the remanufacturer or other person who stores or treats the
hazardous secondary material shall inspect and monitor the closed-vent system
as follows:
(i) Closed-vent system joints,
seams, or other connections that are permanently or semi-permanently sealed
(e.g., a welded joint between two sections of hard piping or a bolted and
gasketed ducting flange) shall be visually inspected at least once per year to
check for defects that could result in air pollutant emissions. The
remanufacturer or other person who stores or treats the hazardous secondary
material shall monitor a component or connection using the procedures specified
in paragraph (B) of rule
3745-51-734 of the
Administrative Code to demonstrate that the component or connection operates
with no detectable emissions following any time the component is repaired or
replaced (e.g., a section of damaged hard piping is replaced with new hard
piping) or the connection is unsealed (e.g., a flange is unbolted).
(ii) Closed-vent system components or
connections other than those specified in paragraph (L)(1)(b)(i) of this rule
shall be monitored annually and at other times as requested by the director,
except as provided for in paragraph (O) of this rule, using the procedures
specified in paragraph (B) of rule
3745-51-734 of the
Administrative Code to demonstrate that the components or connections operate
with no detectable emissions.
(c) In the event that a defect or leak is
detected, the remanufacturer or other person who stores or treats the hazardous
secondary material shall repair the defect or leak in accordance with the
requirements of paragraph (L)(3) of this rule.
(d) The remanufacturer or other person who
stores or treats the hazardous secondary material shall maintain a record of
the inspection and monitoring in accordance with the requirements specified in
rule 3745-51-735 of the
Administrative Code.
(2)
Each closed-vent system that is used to comply with paragraph (K)(2) of this
rule shall be inspected and monitored in accordance with the following
requirements:
(a) The closed-vent system shall
be visually inspected by the remanufacturer or other person who 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 ductwork or piping or loose connections.
(b) The remanufacturer or other person who
stores or treats the hazardous secondary material shall perform an initial
inspection of the closed-vent system on or before the date that the system
becomes subject to this rule. Thereafter, the remanufacturer or other person
who stores or treats the hazardous secondary material shall perform the
inspections at least once every year.
(c) In the event that a defect or leak is
detected, the remanufacturer or other person who stores or treats the hazardous
secondary material shall repair the defect in accordance with the requirements
of paragraph (L)(3) of this rule.
(d) The remanufacturer or other person who
stores or treats the hazardous secondary material shall maintain a record of
the inspection and monitoring in accordance with the requirements specified in
rule 3745-51-735 of the
Administrative Code.
(3)
The remanufacturer or other person who stores or treats the hazardous secondary
material shall repair all detected defects as follows:
(a) Detectable emissions, as indicated by
visual inspection, or by an instrument reading greater than five hundred ppmv
above background, shall be controlled as soon as practicable, but not later
than fifteen calendar days after the emission is detected, except as provided
for in paragraph (L)(3)(c) of this rule.
(b) A first attempt at repair shall be made
no later than five calendar days after the emission is detected.
(c) Delay of repair of a closed-vent system
for which leaks have been detected is allowed if the repair is technically
infeasible without a process unit shutdown, or if the remanufacturer or other
person who stores or treats the hazardous secondary material determines that
emissions resulting from immediate repair would be greater than the fugitive
emissions likely to result from delay of repair. Repair of such equipment shall
be completed by the end of the next process unit shutdown.
(d) The remanufacturer or other person who
stores or treats the hazardous secondary material shall maintain a record of
the defect repair in accordance with the requirements specified in rule
3745-51-735 of the
Administrative Code.
(M) Closed-vent systems and control devices
used to comply with rules
3745-51-730 to
3745-51-735 of the
Administrative Code shall be operated at all times when emissions may be vented
to them.
(N) The owner or operator
using a carbon adsorption system to control air pollutant emissions shall
document that all carbon that is a hazardous waste and that is removed from the
control device is managed in one of the following manners, regardless of the
average volatile organic concentration of the carbon:
(1) Regenerated or reactivated in a thermal
treatment unit that meets one of the following:
(a) The owner or operator of the unit has
been issued a final hazardous waste management permit under
rules 3745-50-40 to 3745-50-235
Chapter 3745-50 of the Administrative Code which
implements the requirements of rules
3745-57-90 to
3745-57-93 of the Administrative
Code; or
(b) The unit is equipped
with and operating air emission controls in accordance with the applicable
requirements of rules
3745-51-730 to
3745-51-735
, and 3745-51-780 to 3745-51-789, of the Administrative Code, or
rules 3745-256-30 to 3745-256-35, and 3745-256-80 to 3745-256-90 of the
Administrative Code; or
(2)
Incinerated in a hazardous waste incinerator for which the owner or operator
either:
(a) Has been issued a final hazardous
waste management permit under rules 3745-50-40 to
3745-50-235
Chapter 3745-50 of the
Administrative Code, which implements the
requirements of rules
3745-57-40 to
3745-57-51 of the Administrative
Code; or
(b) Has designed and
operates the incinerator in accordance with the interim standards requirements
of rules
3745-68-40 to
3745-68-52 of the Administrative
Code.
(3) Burned in a
boiler or industrial furnace for which the owner or operator either:
(a) Has been issued a final hazardous waste
management permit under rules 3745-50-40 to
3745-50-235
Chapter 3745-50 of the
Administrative Code which implements the requirements of rules
3745-266-100 to
3745-266-112 of the
Administrative Code; or
(b) Has
designed and operates the boiler or industrial furnace in accordance with the
interim standards requirements of rules
3745-266-100 to
3745-266-112 of the
Administrative Code.
(O) Any components of a closed-vent system
that are designated, as described in paragraph (C)(9) of rule
3745-51-735 of the
Administrative Code, as unsafe to monitor are exempt from the requirements of
paragraph (L)(1)(b)(ii) of this rule if:
(1)
The remanufacturer or other person who stores or treats the hazardous secondary
material in a hazardous secondary material management unit using a closed-vent
system determines that the components of the closed-vent system are unsafe to
monitor because monitoring personnel would be exposed to an immediate danger as
a consequence of complying with paragraph (L)(1)(b)(ii) of this rule;
and
(2) The remanufacturer or other
person who stores or treats the hazardous secondary material in a hazardous
secondary material management unit using a closed-vent system adheres to a
written plan that requires monitoring the closed-vent system components using
the procedure specified in paragraph (L)(1)(b)(ii) of this rule as frequently
as practicable during safe-to-monitor times.
[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."]
Notes
Five Year Review (FYR) Dates: Exempt
Promulgated Under: 119.03
Statutory Authority: 3734.12
Rule Amplifies: 3734.12
Prior Effective Dates: 06/12/2023
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