Archived: Proposed guidelines: reducing nitrogen oxide emissions from stationary combustion turbines: chapter 5


5. Testing and Monitoring

5.1. The combustion turbine should be maintained and operated in a way that minimizes the time during which the emission limits are not applicable and to ensure that all efforts are made to avoid operating above the NOx emission limits.

5.2. An initial emission performance test should be conducted within six months of the combustion turbine commissioning date to demonstrate conformance with the NOx emission limits, following the requirements in Appendix 1.

5.3. To verify conformance with the NOx emission limits, an emission performance test should be conducted or emission concentration should be monitored following the requirements in Appendix 1 and as follows:

  1. For a non-peaking combustion turbine used to generate electricity with a power rating greater than 25 MW, a Continuous Emissions Monitoring System (CEMS) should be operated;

  2. For any other combustion turbine with a power rating greater than 25 MW, a NOx emission performance test should be conducted once per calendar year;

  3. For a combustion turbine with a power rating less than or equal to 25 MW, a NOx emission performance test should be conducted once every three calendar years.

5.4. Emission performance testing should not be conducted during start-up periods and shut-down periods, periods of malfunction, periods of part-load operation or when the ambient temperature at the point of air intake is less than -18°C.

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