Current through Register Vol. 50, No. 9, September 20, 2024
A. Compliance
1. Owners or operators of closed-vent systems
and control devices used to comply with provisions of LAC 33:V.Chapter 17 shall
comply with the provisions of this Section.
2.
a. The
owner or operator of an existing facility who cannot install a closed-vent
system and control device to comply with the provisions of this Subchapter on
the effective date that the facility becomes subject to the provisions of this
Subchapter must prepare an implementation schedule that includes dates by which
the closed-vent system and control device will be installed and in operation.
The controls must be installed as soon as possible, but the implementation
schedule may allow up to 30 months after the effective date that the facility
becomes subject to this Subchapter for installation and start-up.
b. Any unit that begins operation after
December 21, 1990, and is subject to the provisions of this Subchapter when
operation begins, must comply with the rules immediately (i.e., must have
control devices installed and operating on start-up of the affected unit); the
30-month implementation schedule does not apply.
c. The owner or operator of any facility in
existence on the effective date of an EPA regulatory amendment that renders the
facility subject to this Subchapter shall comply with all requirements of this
Subchapter as soon as practicable, but no later than 30 months after the
regulation's effective date. When control equipment required by this Subchapter
cannot be installed and begin operation by the effective date of the
regulation, the facility owner or operator shall prepare an implementation
schedule that includes the following information: specific calendar dates for
award of contracts or issuance of purchase orders for the control equipment;
initiation of on-site installation of the control equipment; completion of the
control equipment installation; and performance of any testing to demonstrate
that the installed equipment meets the applicable standards of this Subchapter.
The owner or operator shall enter the implementation schedule in the operating
record or in a permanent, readily available file located at the
facility.
d. Owners and operators
of facilities and units that become newly subject to the requirements of this
Subchapter after December 8, 1997, due to an action other than those described
in Subparagraph A.2.c of this Section must comply with all applicable
requirements immediately (i.e., must have control devices installed and
operating on the date the facility or unit becomes subject to this Subchapter;
the 30-month implementation schedule does not apply).
B. Control Devices. A control
device involving vapor recovery (e.g., a condenser or adsorber) shall be
designed and operated to recover the organic vapors vented to it with an
efficiency of 95 weight percent or greater unless the total organic emission
limits of LAC 33:V.1707.A.1 for all affected process vents can be attained at
an efficiency less than 95 weight percent.
C. Combustion Device. 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 it by 95 weight percent
or greater; to achieve a total organic compound concentration of 20 ppmv,
expressed as the sum of the actual compounds, not carbon equivalents, on a dry
basis corrected to 3 percent oxygen; or to provide a minimum residence time of
0.50 seconds at a minimum temperature of 760°C. 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. Flare
1.
Visible Emissions. A flare shall be designed for and operated with no visible
emissions as determined by the methods specified in LAC 33:V.1709.E.1, except
for periods not to exceed a total of five minutes during any two consecutive
hours.
2. Flame. A flare shall be
operated with a flame present at all times, as determined by the methods
specified in LAC 33:V.1709.F.2.c.
3. Combustible Heating Value. A flare shall
be used only if the net heating value of the gas being combusted is 11.2 MJ/scm
(300 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 (200 Btu/scf)
or greater if the flare is nonassisted. The net heating value of the gas being
combusted shall be determined by the methods specified in LAC
33:V.1709.E.2.
4. Steam-Assisted or
Nonassisted
a. A steam-assisted or
nonassisted flare shall be designed for and operated with an exit velocity, as
determined by the methods specified in LAC 33:V.1709.E.3, of less than 18.3 m/s
(60 ft/s), except as provided in LAC 33:V.1709.D.4.b and c.
b. A steam-assisted or nonassisted flare
designed for and operated with an exit velocity, as determined by the methods
specified in LAC 33:V.1709.E.3, equal to or greater than 18.3 m/s (60 ft/s) but
less than 122 m/s (400 ft/s) is allowed if the net heating value of the gas
being combusted is greater than 37.3 MJ/scm (1,000 Btu/scf).
c. A steam-assisted or nonassisted flare
designed for and operated with an exit velocity, as determined by the methods
specified in LAC 33:V.1709.E.3, of less than the velocity,
Vmax, as determined by the method specified in LAC
33:V.1709.E.4, and less than 122 m/s (400 ft/s), is allowed.
5. Air-Assisted. 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
LAC 33:V.1709.E.5.
6. Compliance. A
flare used to comply with this Section shall be steam-assisted, air-assisted,
or nonassisted.
E.
Visible Emissions
1. Reference Method 22 in 40
CFR Part 60, Appendix A, incorporated by reference in LAC 33:III.3003, shall be
used to determine the compliance of a flare with the visible emission
provisions of this Subchapter. 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 Here 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 25°C and 760 mm Hg, but the standard temperature for determining
the volume corresponding to 1 mol is 20°C
K = constant, 1.74 X 10-1 (1/ppm) (g mol/scm) (MJ/kcal),
where standard temperature for (g mol/scm) is 20°C
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,
Appendix A, incorporated by reference in LAC 33:III.3003, and measured for
hydrogen and carbon monoxide by ASTM D 1946-82
Hi = net heat of combustion of sample component i,
kcal/9 mol at 25°C and 760 mm Hg. The heats of combustion may be determined
using ASTM D 2382-83 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 the
methods in LAC 33:III.Chapter 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 LAC 33:V.1709.D.4.c
shall be determined by the following equation.
Click Here To View
Image
where:
28.8 = constant
31.7 = constant
HT = the net heating value as
determined in LAC 33:V.1709.E.2
5. The maximum allowed velocity in m/s,
Vmax, for an air-assisted flare shall be determined by
the following equation.
Click Here To View
Image
where:
8.706 = constant
0.7084 = constant
HT = the net heating value as
determined in LAC 33:V.1709.E.2
F. Inspection and Monitoring. The owner or
operator shall monitor and inspect each control device required to comply with
this Section 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 below:
a. for a thermal vapor
incinerator, a temperature monitoring device equipped with a continuous
recorder. The device shall have an accuracy of +1
percent of the temperature being monitored in ° C or
+0.5°C, 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 +1 percent of the
temperature being monitored in ° C or +0.5°C,
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 44 MW,
a temperature-monitoring device equipped with a continuous recorder. The device
shall have an accuracy of +1 percent of the
temperature being monitored in ° C or +0.5 ° C,
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 44 MW, a monitoring device
equipped with a continuous recorder to measure a parameter or parameters that
indicate that 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 total 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 +1 percent of the
temperature being monitored in ° C or +0.5°C,
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 total 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 LAC 33:V.1709.F.1 and 2 at least once each
operating day to check control device operation and, if necessary, immediately
implement the corrective measures necessary to ensure that the control device
operates in compliance with the requirements of this Section.
G. Carbon Adsorption System,
Regenerative. An owner or operator using a carbon adsorption system such as a
fixed-bed carbon adsorber that regenerates the carbon bed directly on-site in
the control device shall replace the existing carbon in the control device with
fresh carbon at a regular, predetermined interval that is no longer than the
carbon service life established as a requirement of LAC
33:V.1713.B.4.c.vi.
H. Carbon
Adsorption System, Nonregenerative. An owner or operator using a carbon
adsorption system such as a carbon canister that does not regenerate the carbon
bed directly on-site in the control device shall replace the existing carbon in
the control device with fresh carbon regularly 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 20 percent of the
time required to consume the total carbon working capacity established as a
requirement of LAC 33:V.1713.B.4.c.vii, whichever is longer.
2. Replace the existing carbon with fresh
carbon at a regular, predetermined interval that is less than the design carbon
replacement interval established as a requirement of LAC
33:V.1713.B.4.c.vii.
I.
Alternative Process or Operational Parameters. 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. Alternative Control Device: Documentation.
An owner or operator of an affected facility seeking to comply with the
provisions of LAC 33:V.Chapters 10, 11, 15, 17, 19, 21, 23, 25, 27, 28, 29, 31,
32, 33, 35, 37 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 500 ppmv above background as
determined by the procedure in LAC 33:V.1711.B 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 owner or operator shall monitor and
inspect each closed-vent system required to comply with this Section 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 Section 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 owner or operator on or before
the date that the system becomes subject to this Section. The owner or operator
shall monitor the closed-vent system components and connections using the
procedures specified in LAC 33:V.1711.B to demonstrate that the closed-vent
system operates with no detectable emissions, as indicated by an instrument
reading of less than 500 ppmv above background.
b. After initial leak detection monitoring
required in Subparagraph L.1.a of this Section, the owner or operator 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 owner or operator shall
monitor a component or connection using the procedures specified in LAC
33:V.1711.B to demonstrate that it 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 Clause L.1.b.i of this Section shall
be monitored annually and at other times as requested by the administrative
authority, except as provided for in Subsection O of this Section, using the
procedures specified in LAC 33:V.1711.B to demonstrate that the components or
connections operate with no detectable emissions.
c. In the event that a defect or leak is
detected, the owner or operator shall repair the defect or leak in accordance
with the requirements of Paragraph L.3 of this Section.
d. The owner or operator shall maintain a
record of the inspection and monitoring in accordance with the requirements
specified in LAC 33:V.1713.
2. Each closed-vent system that is used to
comply with Paragraph K.2 of this Section shall be inspected and monitored in
accordance with the following requirements:
a. the closed-vent system 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 ductwork or piping or loose connections;
b. the owner or operator shall perform an
initial inspection of the closed-vent system on or before the date that the
system becomes subject to this Section. Thereafter, the owner or operator shall
perform the inspections at least once every year;
c. in the event that a defect or leak is
detected, the owner or operator shall repair the defect in accordance with the
requirements of Paragraph L.3 of this Section; and
d. the owner or operator shall maintain a
record of the inspection and monitoring in accordance with the requirements
specified in LAC 33:V.1713.
3. The owner or operator shall repair all
detected defects as follows:
a. detectable
emissions, as indicated by visual inspection or by an instrument reading
greater than 500 ppmv above background, shall be controlled as soon as
practicable, but not later than 15 calendar days after the emission is
detected, except as provided for in Subparagraph L.3.c of this
Section;
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 owner or
operator 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; and
d. the owner or
operator shall maintain a record of the defect repair in accordance with the
requirements specified in LAC 33:V.1713.
M. Closed-vent systems and control devices
used to comply with provisions of this Chapter 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 permit under LAC 33:V.Chapter 5 which implements
the requirements of LAC 33:V.Chapter 32;
b. the unit is equipped with and operating
air emission controls in accordance with the applicable requirements of
Subchapters A and C of this Chapter or of LAC 33:V.Chapter 43; or
c. the unit is equipped with and operating
air emission controls in accordance with a national emission standard for
hazardous air pollutants under 40 CFR Part 61 or Part 63;
2. incinerated in a hazardous waste
incinerator for which the owner or operator either:
a. has been issued a final permit under LAC
33:V.Chapter 5 that implements the requirements of LAC 33:V.Chapter 31;
or
b. has designed and operates the
incinerator in accordance with the interim status requirements of LAC
33:V.Chapter 43.Subchapter N;
3. burned in a boiler or industrial furnace
for which the owner or operator either:
a.
has been issued a final permit under LAC 33:V.Chapter 5 that implements the
requirements of LAC 33:V.Chapter 30; or
b. has designed and operates the boiler or
industrial furnace in accordance with the interim status requirements of LAC
33:V.Chapter 30.
O. Any components of a closed-vent system
that are designated, as described in LAC 33:V.1713.C.9, as unsafe to monitor
are exempt from the requirements of Clause L.1.b.ii of this Section if:
1. the owner or operator of the 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 Clause L.1.b.ii of this Section; and
2. the owner or operator of the closed-vent
system adheres to a written plan that requires monitoring the closed-vent
system components using the procedure specified in Clause L.1.b.ii of this
Section as frequently as practicable during safe-to-monitor times.
AUTHORITY NOTE:
Promulgated in accordance with
R.S.
30:2180 et
seq.
