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EN 14789:2017

Stationary source emissions - Determination of volume concentration of oxygen - Standard reference method: Paramagnetism

Edition date: 2022-09-15
In Force
Summary: This European Standard specifies the standard reference method (SRM) based on the paramagnetic principle for the determination of the oxygen concentrations 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 performance characteristics to be determined and the performance criteria to be fulfilled by measuring systems based on this measurement method. It applies to periodic monitoring and 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 (AM) to the SRM by application of prEN 14793. This European Standard has been validated during field tests on waste incineration, co-incineration and large combustion plants and on a recognized test bench. It has been validated for sampling periods of 30 min in the range from 3 % to 21 %. Oxygen concentration values, expressed as volume concentrations, are used to allow results of emission measurements to be standardised to the oxygen reference concentration and dry gas conditions required e.g. by EU Directive 2010/75/EC on industrial emissions. 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.

La présente Norme européenne spécifie la méthode de référence normalisée (SRM) basée sur le principe du paramagnétisme pour la détermination des concentrations en oxygène des effluents gazeux émis dans l'atmosphère par les conduits et cheminées. Elle inclut le système de prélèvement et de conditionnement du gaz ainsi que l'analyseur. La présente Norme européenne spécifie les caractéristiques de performance devant être déterminées et les critères de performance devant être remplis par les systèmes de mesurage fondés sur cette méthode de mesurage. Elle s'applique à la surveillance périodique et à l'étalonnage ou au contrôle des systèmes de mesurage automatisés (AMS, Automated Measuring Systems) installés à demeure sur une cheminée, à des fins réglementaires ou à d'autres fins. La présente Norme européenne spécifie les critères permettant de démontrer l'équivalence d'une méthode « alternative » (AM, Alternative Method) à la méthode de référence normalisée par l'application du prEN 14793. La présente Norme européenne a été validée au cours d'essais sur site pratiqués sur des installations destinées à l'incinération et à la coincinération des déchets, sur de grandes installations de combustion ainsi que sur un banc d'essai reconnu. Elle a été validée pour des périodes de prélèvement de 30 min dans la plage comprise entre 3 % et 21 %. Les valeurs de concentration en oxygène, exprimées en concentrations volumiques, sont utilisées afin d'exprimer les résultats des mesurages d'émission aux conditions de concentration en oxygène de référence et aux conditions de gaz sec requises, par exemple, par la Directive UE 2010/75/CE relative aux émissions industrielles. NOTE Les caractéristiques des installations, les conditions des essais sur site et les valeurs de répétabilité et de reproductibilité sur site sont indiquées à l'Annexe A.
ICS: 13.040.40-Stationary source emissions
CTN: CEN/TC 264 - 6245

Reemplazo Normas

Reemplaza a EN 14789:2005

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