Current through Register Vol. 46, No. 12, March 20, 2024
(a)
Coke pushing and transport, and waste heat (underfire) stack. Stack testing
procedures for determining compliance with the standards set forth in sections
214.4(a)
and
214.6(a)
of this Part will be conducted in accordance with methods acceptable to the
commissioner. The methodology specified in appendix A of part 60 of title 40 of
the Code of Federal Regulations (see table 1, section
200.9 of this
Title) and all future technical revisions, additions or corrections made
thereto shall be considered acceptable, except where the commissioner has
required a specific method. If the control device cannot be tested in
accordance with those methods, appropriate test methods will be determined by
the commissioner in accordance with Part 202 of this Title. During each stack
test performed, simultaneous visible emission evaluations must be conducted and
a copy of the raw data sheets must be included with the test report. The report
must include actual sampling times to allow a comparison between the visible
emissions and the stack test results. During each stack test performed, the
source owner must provide access to production data and other parameters
necessary for determining compliance. During each run of a stack test, the
source to be tested will be operated at a production level at least as large as
the average production level during the three months prior to the first day of
testing. Unless modified below, compliance will be determined by averaging
three runs. Testing will be performed on a sufficient number of pushing and
transport operation cycles in order to achieve a minimum of a one-hour duration
test run.
(1) If a mobile evacuation and
emission control system is used, compliance will be determined by the use of a
pushing emissions test car. The car must be supplied by the source owner in
order to perform these tests and must contain the necessary duct extension to
perform the test.
(2) If a positive
pressure baghouse control system is used, any grating or other openings of the
baghouse compartments which may admit outside air into the baghouse must be
sealed during the sampling periods.
(3) If a modular baghouse is used and the
baghouse contains more than five stacks, the owner must perform one test run
per stack. Compliance will be determined by computing the mass emission rate,
in pounds per hour, for each stack and then summing each of these mass emission
rates. During all test runs, the production rate must be maintained within 10
percent of the mean rate for the entire sampling period.
(4) To determine compliance with the
pound-per-ton mass emission standard, the measured particulate concentration
will be multiplied by the volumetric flow rate at standard conditions (20°
Centigrade [C], 760 millimeters [mm]), measured at the sampling point, and
divided by the number of tons of coal charged to the ovens that were pushed
during the test.
(5) Pushing
emission control sheds.
(i) The sampling of a
push will begin with the initial movement of the ram pushing the coke out of
the oven. Sampling will end three minutes later unless the ram becomes stuck
before the coke is completely pushed out of the oven. If the ram does become
stuck in the oven, sampling will be discontinued during the time of no
significant emissions generation and will resume when the ram moves the coke
again. The sampling period for that push will end when three minutes of sample
have been collected.
(ii) A
sufficient number of visible emission observers will be used to observe all
sources of visible emissions during the mass emission test.
(b) Coke oven fuel
gas-sulfur recovery/desulfurization systems. For the purpose of determining
compliance with the coke oven gas standard of 0.5 grains of sulfur compounds
(measured as hydrogen sulfide) per dry standard cubic foot of total coke oven
gas produced, or alternative limits approved by the commissioner, the following
test procedures must be followed:
(1) The
owner or operator must submit a schematic diagram of the coke oven gas main
distribution system immediately downstream of the exhausters. This schematic
diagram must include gas flow rates in dry standard cubic feet per minute for
the sampling points selected to determine the sulfur compound concentrations in
coke oven gas used, emitted or flared. Flow rates are not required when
analysis indicates the total coke oven gas sulfur concentration prior to
desulfurization is below 0.5 grains per dry standard cubic foot of sulfur
compounds (measured as hydrogen sulfide).
(2) Where gas flow rates are required, the
source owner must use an orifice flow rate measuring device or equivalent at
the time of sampling.
(3) The
designated sampling points must be accepted and approved in accordance with
Part 202 of this Title. Using the Tutweiller method of analysis, take a minimum
three samples, one per hour, at each required sampling point.
(4) The concentration of sulfur compounds at
each sampling point is determined by averaging the total of each group of three
samples.
(5) Compliance
determination is established by calculating the flow-weighted average of all
required sampling points for the total coke oven gas produced.
(c) Wet quench towers. Emission
testing must be done in accordance with methods acceptable to the commissioner.
The reference methods specified in appendix A of part 60 of title 40 of the
Code of Federal Regulations (see table 1, section
200.9 of this
Title), as modified below, shall be considered acceptable. The source owner may
propose alternative methods in compliance with Part 202 of this Title.
(1) A cyclone with a cut size of 3 to 10
micrometers must be placed ahead of the sampling probe. The volume of the
liquid removed by the cyclone should be reported in the test report. The liquid
should be evaporated at room temperature and the weight of the solid residue
should be recorded and included as a part of the front half catch.
(2) The gas velocity at each sampling point
in the quench tower must be measured and continuously recorded on a strip chart
or by means of another equivalent automated system during a normal quench. The
two gas sampling rates will be determined from the recorded relationship of
stack gas velocity over time. One of these flow rates is the peak observed
during the middle of the quench. The other flow rate is normally one half to
two thirds the peak and represents the average flow during the early and late
stages of the quench when the stack velocity is increasing and decreasing. The
actual flow rates during stack sampling must be at the lower level for the time
it takes the stack velocity to reach the peak, at the high rate during the peak
and at the lower level during the time the flow rate is decreasing from the
peak.
(3) Sampling of an individual
quench will begin with the entrance of the quench car into the tower and will
end with the exit of the car from the quench tower.
(4) A sufficient integral number of quenches
must be sampled to collect the same number of samples from each probe location
and the total sample volume required by the reference methods.
(5) The sampling probes must be located at
least five feet above the baffles and at least five feet below the top of the
tower.