This European Standard specifies the standard reference method (SRM) based on the chemiluminescence principle for the determination of the nitrogen oxides (NOx) in flue gases emitted to the atmosphere from ducts and stacks. It includes the sampling and the gas conditioning system, as well as the analyser. This European Standard specifies the characteristics to be determined and the performance criteria to be fulfilled by portable automated measuring systems (P-AMS) based on this measurement method. It applies for periodic monitoring and for the calibration or control of automated measuring systems (AMS) permanently installed on a stack, for regulatory or other purposes. This European Standard specifies criteria for demonstration of equivalence of an alternative method to the SRM by application of EN 14793:2017. This European Standard has been validated during field tests on waste incineration, co-incineration and large combustion installations and on a recognized test-bench. It has been validated for sampling periods of 30 min in the range of 0 mg/m3 to 1300 mg/m3 of NOx for large combustion plants and 0 mg/m3 to 400 mg/m3 of NOx for waste incineration, according to emission limit values (ELV) laid down in the Directive 2010/75/EU. The ELV for NOx (NO + NO2) in EU Directives is expressed in mg/m3 of NO2 on a dry basis, at a specified value for oxygen and at standard conditions (273 K and 101,3 kPa). NOTE The characteristics of installations, the conditions during field tests and the values of repeatability and reproducibility in the field are given in Annex A.
EN 14792:2017 Referenced Document
EN 13284-1:2001 Stationary Source Emissions - Determination of Low Range Mass Concentration of Dust - Part 1: Manual Gravimetric Method*, 2024-04-20 Update
EN 14790:2005 Stationary source emissions - Determination of the water vapour in ducts*, 2024-04-20 Update
EN 14790:2017 Stationary source emissions - Determination of the water vapour in ducts - Standard reference method
EN 14793:2017 Stationary source emissions - Demonstration of equivalence of an alternative method with a reference method
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EN 15267-4:2017 Air quality - Certification of automated measuring systems - Part 4: Performance criteria and test procedures for automated measuring systems for periodic measurements of emissions from stationary sources
EN ISO 14956:2002 Air quality - Evaluation of the suitability of a measurement procedure by comparison with a required measurement uncertainty ISO 14956: 2002
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EN 14792:2017 history
2017EN 14792:2017 Stationary source emissions - Determination of mass concentration of nitrogen oxides - Standard reference method: chemiluminescence
2005EN 14792:2005 Stationary source emissions - Determination of mass concentration of nitrogen oxides (NOx) - Reference method: Chemiluminescence