Sec. 214.11. Test procedures

(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.