| (a) At least once each calendar year, an owner or operator
shall conduct an audio, visual, and olfactory inspection of each compressor
seal cover for defects that may result in air emissions, except as
provided in subsection (c) of this section. Defects include, but are
not limited to, visible cracks, holes, or gaps in the cover, or between
the cover and the separator wall; broken, cracked, or otherwise damaged
seals or gaskets on cover devices; and broken or missing hatches,
access covers, caps, or other cover devices. Repairs must be made
in accordance with subsection (e) of this section.
(b) The following monitoring and inspection requirements
apply to closed vent systems routed to a control device, including
routing to a process, used to demonstrate compliance with the control
requirements of this division, except as specified in subsection (c)
of this section. For the purpose of this subsection, a leak is a measured
volatile organic compounds (VOC) concentration of equal to or greater
than 500 parts per million by volume (ppmv). Defects that could result
in air emissions include visible cracks, holes, or gaps in piping;
loose connections; liquid leaks; or broken or missing cover devices.
Repairs of equipment with a leak or detection of a defect in equipment
must be made in accordance with subsection (e) of this section.
(1) The owner or operator shall conduct initial inspection
and monitoring by the appropriate compliance date listed in §115.183
of this title (relating to Compliance Schedules), using United States
Environmental Protection Agency (EPA) Method 21 in 40 Code of Federal
Regulations (CFR) Part 60, Appendix A-7 on all closed vent system
components to demonstrate that the closed vent system operates with
no leaks. The instrument response factor criteria in EPA Method 21
in 40 CFR Part 60, Section 8.1.1 must be for the average composition
of the stream and not for each individual VOC constituent.
(2) The owner or operator shall conduct annual monitoring
and inspections following the initial inspection conducted in paragraph
(1) of this subsection.
(A) The owner or operator shall conduct an audio, visual,
and olfactory inspection on 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) for defects that could result in air emissions.
For an inspection using EPA Method 21 in 40 CFR Part 60, Appendix
A-7, monitoring must be performed to demonstrate that there are no
leaks following any time a component is repaired or the closed vent
system connection is unsealed.
(B) The owner or operator shall monitor the closed
vent system components and connections using EPA Method 21 in 40 CFR
Part 60, Appendix A-7, other than those subject to subparagraph (A)
of this paragraph, to demonstrate that the closed vent system operates
with no leaks.
(3) The owner or operator of a closed vent system routed
to a control device, including routing to a process, used to demonstrate
compliance with the control requirements of this division, must conduct
monitoring using EPA Method 21 in 40 CFR Part 60, Appendix A-7 to
demonstrate there are no leaks from the closed vent system.
(A) The instrument response factor criteria in EPA
Method 21 in 40 CFR Part 60, Section 8.1.1 must be for the average
composition of the stream and not for each individual VOC constituent.
For process streams that contain nitrogen, air, or other inert gases
that are not VOC, the average stream response factor is calculated
on an inert-free basis.
(B) An owner or operator shall calibrate the detection
instrument using the procedures specified in EPA Method 21 in 40 CFR
Part 60, Appendix A-7 before use on each day the instrument is used.
(C) The following calibration gases must be used.
(i) Zero air must contain less than 10 ppmv hydrocarbon
in air.
(ii) The other calibration gases must be mixtures of
methane or n-hexane in air, one with a concentration either of less
than 10,000 ppmv, and another with a concentration of no more than
2,000 ppmv greater than the leak definition concentration of the equipment
monitored. If the design of the monitoring instrument allows for multiple
calibration scales, then the lower scale shall be calibrated with
a calibration gas that is no higher than 2,000 ppmv above the concentration
specified as a leak, and the highest scale shall be calibrated with
a calibration gas that is approximately equal to 10,000 ppmv. If only
one scale on an instrument will be used during monitoring, the owner
or operator is not required to calibrate the scales that will not
be used during monitoring that day.
(D) The owner or operator shall follow EPA Method 21
in 40 CFR Part 60, Appendix A-7 to adjust instrument readings if choosing
to account for the background VOC level.
(E) Using the following parameters, the owner or operator
shall determine if a potential leak interface operates with no detectable
emissions. A potential leak interface is determined to operate with
no detectable VOC emissions if the organic concentration value is
less than 500 ppmv.
(i) If an owner or operator chooses not to adjust the
detection instrument readings for the background VOC concentration
level, then the maximum organic concentration value measured by the
detection instrument must be compared to the 500 ppmv value for the
potential leak interface.
(ii) If an owner or operator chooses to adjust the
detection instrument readings for the background VOC concentration
level, an owner or operator shall compare the value of the arithmetic
difference between the maximum organic concentration value measured
by the instrument and the background organic concentration value with
the 500 ppmv value for the potential leak interface.
(c) Closed vent system components and compressor seal
covers that are designated as unsafe-to-monitor or difficult-to-monitor
are not subject to the inspection and monitoring frequency in subsection
(b) of this section. The monitoring methods of the components and
covers that apply in subsections (a) and (b) of this section apply
to the components in this subsection.
(1) Unsafe-to-monitor components must be identified
in a list in accordance with the requirements in §115.180 of
this title (relating to Recordkeeping Requirements). If an unsafe-to-monitor
component is not considered safe to monitor within a calendar year,
then it must be monitored as soon as possible during times that are
safe to monitor.
(2) Difficult-to-monitor components must be identified
in a list in accordance with the requirements in §115.180 of
this title. A difficult-to-monitor component must be inspected at
least once every five years.
(d) Upon the detection of a leak, the owner or operator
shall affix to the leaking component a weatherproof and readily visible
tag bearing an identification number and the date the leak was detected.
This tag must remain in place, or be replaced if damaged, until the
leaking component is repaired. Tagging of difficult-to-monitor leaking
components may be done by reference tagging. The reference tag should
be located as close as possible to the leaking component and should
clearly identify the leaking component and its location.
(e) The owner or operator shall repair a leak or defect
as soon as practicable and shall make a first attempt to repair a
leak or defect no later than five calendar days after the leak or
defect is found. The component must be repaired no later than 15 calendar
days after the leak or defect is found, except if a delay of repair
is needed. If parts are unavailable, repair may be delayed if parts
are ordered promptly. The repair must be completed within five days
of receipt of the required parts. Repair may be delayed until the
next shutdown if the repair of the component would require a shutdown
that would create more total VOC emissions than the repair would eliminate,
but the repair must be completed by the end of the next shutdown.
A repair is complete once an EPA Method 21 or audio, visual, and olfactory
inspection, as appropriate, under subsection (b)(2) or (3) of this
section is conducted showing no leak or defect.
(f) The owner or operator shall install and maintain
monitors to measure operational parameters of any control device installed
to meet applicable control requirements of this division. Such monitors
must be sufficient to demonstrate proper functioning of those devices
to design specifications.
(1) For a direct-flame incinerator, the owner or operator
shall continuously monitor the exhaust gas temperature immediately
downstream of the device.
(2) For a condensation system, the owner or operator
shall continuously monitor the outlet gas temperature to ensure the
temperature is below the manufacturer's recommended operating temperature
for controlling the VOC vapors routed to the device.
(3) For a carbon adsorption system or carbon adsorber,
as defined in §101.1 of this title (relating to Definitions),
the owner or operator shall, as applicable:
Cont'd... |
