Wyoming Administrative Code › Agency 020 - Environmental Quality, Dept. of › Sub-Agency 0002 - Air Quality › Chapter 14 - Emission Trading Program Regulations › Appendix A - A:WEB CHAPTER 14, SECTION 2 MONITORING PROTOCOLS

Current through July 13, 2024
Protocol WEB-1:SO2 Monitoring
				  of Fuel Gas Combustion Devices
1.
Applicability.
(a) The provisions of this protocol are applicable to fuel
				  gas combustion devices at petroleum refineries.
(b) Fuel gas combustion devices include boilers, process
				  heaters, and flares used to burn fuel gas generated at a petroleum
				  refinery.
(c) Fuel gas means any gas which is generated and combusted
				  at a petroleum refinery. Fuel gas does not include:
(1) natural gas, unless combined with other gases generated
				  at a petroleum refinery, (2) gases generated by a catalytic cracking unit
				  catalyst regenerator, (3) gases generated by fluid coking burners, (4) gases
				  combusted to produce sulfur or sulfuric acid, or (5) process upset gases
				  generated due to startup, shutdown, or malfunctions.
2.
Monitoring Requirements.
(a) Except as provided in paragraphs (ii) and (iii) of this
				  Section  2, fuel gas combustion devices shall use a continuous fuel gas
				  monitoring system (CFGMS) to determine the total sulfur content (reported as
				  H2S) of the fuel gas mixture prior to combustion, and
				  continuous fuel flow meters to determine the amount of fuel gas burned.
(i) Fuel gas combustion devices having a common source of
				  fuel gas may be monitored for sulfur content at one location, if monitoring at
				  that location is representative of the sulfur content of the fuel gas being
				  burned in any fuel gas combustion device.
(ii) The CFGMS shall meet the performance requirements in
				  Performance Specification 2 in Appendix B to  40 CFR Part 60, and the
				  following:
(A) Continuously monitor and record the concentration by
				  volume of total sulfur compounds in the gaseous fuel reported as ppmv
				  H2S.
(B) Have the span value set so that the majority of readings
				  fall between 10 and 95 percent of the range.
(C) Record negative values of zero drift.
(D) Calibration drift shall be 5.0 percent of the
				  span.
(E) Methods 15A, 16, or approved alternatives for total
				  sulfur, are the reference methods for the relative accuracy test. The relative
				  accuracy test shall include a bias test in accordance with Section  4, paragraph
				  (c) of this protocol.
(iii) All continuous fuel flow meters shall comply with the
				  applicable provisions of Appendix D to  40 CFR Part 75.
(iv) The hourly mass SO2 emissions
				  shall be calculated using the following equation:
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(b) In place of a CFGMS in paragraph (a) of this Section  2,
				  fuel gas combustion devices having a common source of fuel gas may be monitored
				  with an SO2 CEMS and flow CEMS at only one location, if
				  the CEMS monitoring at that location is representative of the SO2
				  emission rate (lb SO2/scf fuel gas burned)
				  of all applicable fuel gas combustion devices. Continuous fuel flow meters
				  shall be used in accordance with paragraph (b), and the fuel gas combustion
				  device monitored by a CEMS shall have separate fuel metering.
(i) Each CEMS for SO2 and flow shall
				  comply with the operating requirements, performance specifications, and quality
				  assurance requirements of  40 CFR Part 75.
(ii) All continuous fuel flow meters shall comply with the
				  applicable provisions of Appendix D to  40 CFR Part 75.
(iii) The SO2 mass emissions for all
				  the fuel gas combustion devices monitored by this approach shall be determined
				  by the ratio of the amount of fuel gas burned by the CEMS-monitored fuel gas
				  combustion device to the total fuel gas burned by all applicable fuel gas
				  combustion devices using the following equation:
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(c) In place of a CFGMS in paragraph (a) of this section,
				  fuel gas combustion devices having a common source of fuel gas may be monitored
				  with an SO2 - diluent CEMS at only one location, if the
				  CEMS monitoring at that location is representative of the
				  SO2 emission rate (lb SO2/mmBtu)
				  of all applicable fuel gas combustion devices. If this option is selected, the
				  owner or operator shall conduct fuel gas sampling and analysis for gross
				  calorific value (GCV), and shall use continuous fuel flow metering in
				  accordance with paragraph (a) of Section  2  in this appendix, with separate fuel
				  metering for the CEMS-monitored fuel gas combustion device.
(i) Each SO2-diluent CEMS shall comply
				  with the applicable provisions for SO2 monitors and
				  diluent monitors in  40 CFR Part 75, and shall use the procedures in Section  3 
				  of Appendix F to Part 75 for determining SO2 emission
				  rate (lb/mmBtu) by substituting the term SO2 for
				  NOx in that section.
(ii) All continuous fuel flow meters and fuel gas sampling
				  and analysis for GCV to determine the heat input rate from the fuel gas shall
				  comply with the applicable provisions of Appendix D to  40 CFR Part 75.
(iii) The SO2 mass emissions for all
				  the fuel gas combustion devices monitored by this approach shall be determined
				  by the ratio of the fuel gas heat input to the CEMS-monitored fuel gas
				  combustion device to the total fuel gas heat input to all applicable fuel gas
				  combustion devices using the following equation:
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3.
Certification/Recertification
				  Requirements.
(a) All monitoring systems are subject to initial
				  certification and recertification testing as follows:
(i) The owner or operator shall comply with the initial
				  testing and calibration requirements in Performance Specification 2 in Appendix
				  B of  40 CFR Part 60  and paragraph (a)(ii) of Section  2  of this protocol for
				  each CFGMS.
(ii) Each CEMS for SO2 and flow or
				  each SO2-diluent CEMS shall comply with the testing and
				  calibration requirements specified in  40 CFR Part 75, Section 75.20  and
				  Appendices A and B of the CFR, except that each
				  SO2-diluent CEMS shall meet the relative accuracy
				  requirements for a NOx-diluent CEMS (lb/mmBtu).
(iii) A continuous fuel flow meter shall comply with the
				  testing and calibration requirements in                40 CFR Part 75, Appendix D.
4.
Quality Assurance/Quality Control
				  Requirements.
(a) A quality assurance/quality control (QA/QC) plan shall be
				  developed and implemented for each CEMS for SO2 and flow
				  or the SO2-diluent CEMS in compliance with
Appendix B of 40 CFR Part 75.
(b) A QA/QC plan shall be developed and implemented for each
				  continuous fuel flow meter and fuel sampling and analysis in compliance with
				  Appendix B of 40 CFR Part 75.
(c) A QA/QC plan shall be developed and implemented for each
				  CFGMS in compliance with sections  1  and 1.1 of Appendix B of 40 CFR Part 75,
				  and the following:
(i) Perform a daily calibration error test of each CFGMS at
				  two gas concentrations, one low level and one high level. Calculate the
				  calibration error as described in Appendix A to 40 CFR Part 75. An out of
				  control period occurs whenever the error is greater than 5.0 percent of the
				  span value.
(ii) In addition to the daily calibration error test, an
				  additional calibration error test shall be performed whenever a daily
				  calibration error test is failed, whenever a monitoring system is returned to
				  service following repairs or corrective actions that may affect the monitor
				  measurements, or after making manual calibration adjustments.
(iii) Perform a linearity test once every operating quarter.
				  Calculate the linearity as described in Appendix A to 40 CFR Part 75. An out of
				  control period occurs whenever the linearity error is greater than 5.0 percent
				  of a reference value, and the absolute value of the difference between average
				  monitor response values and a reference value is greater than 5.0 ppm.
(iv) Perform a relative accuracy test audit once every four
				  operating quarters. Calculate the relative accuracy as described in Appendix A
				  to 40 CFR Part 75. An out of control period occurs whenever the relative
				  accuracy is greater than 20.0percent of the mean value of the reference method
				  measurements.
(v) Using the results of the relative accuracy test audit,
				  conduct a bias test in accordance with Appendix A to 40 CFR Part 75, and
				  calculate and apply a bias adjustment factor if required.
5.
Missing Data Procedures.
(a) For any period in which valid data are not being recorded
				  by an SO2 CEMS or flow CEMS specified in this section,
				  missing or invalid data shall be replaced with substitute data in accordance
				  with the requirements in Subpart D of 40 CFR Part 75.
(b) For any period in which valid data are not being recorded
				  by an SO2-diluent CEMS specified in this section,
				  missing or invalid data shall be replaced with substitute data on a rate basis
				  (lb/mmBtu) in accordance with the requirements for SO2
				  monitors in Subpart D of 40 CFR Part 75.
(c) For any period in which valid data are not being recorded
				  by a continuous fuel flow meter or for fuel gas GCV sampling and analysis
				  specified in this section, missing or
invalid data shall be replaced with substitute data in
				  accordance with missing data requirements in Appendix D to 40 CFR Part
				  75.
(d) For any period in which valid data are not being recorded
				  by the CFGMS specified in this section, hourly missing or invalid data shall be
				  replaced with substitute data in accordance with the missing data requirements
				  for units performing hourly gaseous fuel sulfur sampling in Section 2.4. of
				  Appendix D to 40 CFR Part 75.
6.
Monitoring Plan and Reporting
				  Requirements.
(a) In addition to the general monitoring plan and reporting
				  requirements of Section  2(h) of Chapter 14, the owner or operator shall meet
				  the following additional requirements:
(i) The monitoring plan shall identify each group of units
				  that are monitored by a single monitoring system under this Protocol WEB-1, and
				  the plan shall designate an identifier for the group of units for emissions
				  reporting purposes. For purpose of submitting emissions reports, no
				  apportionment of emissions to the individual units within the group is
				  required.
(ii) If the provisions of paragraphs (b) or (c) of Section  2 
				  of this protocol are used, provide documentation and an explanation to
				  demonstrate that the SO2 emission rate from the
				  monitored unit is representative of the rate from non-monitored units.
Protocol WEB-2: Predictive Flow Monitoring Systems for
				  Kilns with Positive Pressure Fabric Filter
1.
Applicability.
(a) The provisions of this protocol are applicable to cement
				  kilns or lime kilns that are (1) controlled by a positive pressure fabric
				  filter, and (2) have operating conditions upstream of the fabric filter that
				  the WEB source documents would reasonably prevent reliable flow monitor
				  measurements.
2.
Monitoring Requirements.
(a) A cement or lime kiln with a positive pressure fabric
				  filter shall use a predictive flow monitoring system (PFMS) to determine the
				  hourly kiln exhaust gas flow.
(b) A PFMS is the total equipment necessary for the
				  determination of exhaust gas flow using process or control device operating
				  parameter measurements and a conversion equation, a graph, or computer program
				  to produce results in cubic feet per hour.
(c) The PFMS shall meet the following performance
				  specifications:
(i) The PFMS must allow for the automatic or manual
				  determination of failed monitors. At a minimum a daily determination must be
				  performed.
(ii) The PFMS shall have provisions to check the calibration
				  error of each parameter that is individually measured. The owner or operator
				  shall propose appropriate performance specifications in the initial monitoring
				  plan for all parameters used in the PFMS comparable to the degree of accuracy
				  required for other monitoring systems used to comply with this Rule. The
				  parameters shall be tested at two levels, low: 0 to 20 percent of full scale,
				  and high: 50 to 100 percent of full scale. The reference value need not be
				  certified.
(iii) The relative accuracy of the PFMS must be [LESS THAN OR
				  EQUAL] 10.0 percent of the reference method average value, and include a bias
				  test in accordance with paragraph (a)(iii) of Section  3  of this
				  protocol.
3.
Certification Requirements.
(a) The PFMS is subject to initial certification testing as
				  follows:
(i) Demonstrate the ability of the PFMS to identify
				  automatically or manually a failed monitor.
(ii) Provide evidence of calibration testing of all
				  monitoring equipment. Any tests conducted within the previous 12 months of
				  operation that are consistent with the QA/QC plan for the PFMS are acceptable
				  for initial certification purposes.
(iii) Perform an initial relative accuracy test over the
				  normal range of operating conditions of the kiln. Using the results of the
				  relative accuracy test audit, conduct a bias test in accordance with Appendix A
				  to 40 CFR Part 75, and calculate and apply a bias adjustment factor if
				  required.
4.
Quality Assurance/Quality Control
				  Requirements.
(a) A QA/QC plan shall be developed and implemented for each
				  PFMS in compliance with sections  1  and 1.1 of Appendix B of 40 CFR Part 75, and
				  the following:
(i) Perform a daily monitor failure check.
(ii) Perform calibration tests of all monitors for each
				  parameter included in the PFMS. At a minimum, calibrations shall be conducted
				  prior to each relative accuracy test audit.
(iii) Perform a relative accuracy test audit and accompanying
				  bias test once every four operating quarters. Calculate the relative accuracy
				  (and bias adjustment factor) as described in Appendix A to 40 CFR Part 75. An
				  out of control period occurs whenever the flow relative accuracy is greater
				  than 10.0 percent of the mean value of the reference method.
5.
Missing Data.
(a) For any period in which valid data are not being recorded
				  by the PFMS specified
in this section, hourly missing or invalid data shall be
				  replaced with substitute data in accordance with the flow monitor missing data
				  requirements for non-load based units in Subpart D of 40 CFR Part 75.
6.
Monitoring Plan Requirements.
(a) In addition to the general monitoring plan requirements
				  of Section  2(h) of Chapter 14, the owner or operator shall meet the following
				  additional requirements:
(i) The monitoring plan shall document the reasons why stack
				  flow measurements upstream of the fabric filter are unlikely to provide
				  reliable flow measurements over time.
(ii) The initial monitoring plan shall explain the
				  relationship of the proposed parameters and stack flow, and discuss other
				  parameters considered and the reasons for not using those parameters in the
				  PFMS. The State of Wyoming may require that the subsequent monitoring plan
				  include additional explanation and documentation for the reasonableness of the
				  proposed PFMS.