EN 14792:2005

Stationary source emissions - Determination of mass concentration of nitrogen oxides (NOx) - Reference method: Chemiluminescence

This European Standard describes the chemiluminescence method, including the sampling and the gas conditioning system, to determine the NO/NO2/NOX concentrations in flue gases emitted from ducts and stacks to atmosphere. This European Standard is the Standard Reference Method (SRM) for periodic monitoring and for calibration or control of Automatic Measuring Systems (AMS) permanently installed on a stack, for regulatory or other purposes such as calibration. To be used as the SRM, the user shall demonstrate that the performance characteristics of the method are better than the performance criteria defined in this European Standard and that the overall uncertainty of the method is less than ± 10 percent relative at the daily Emission Limit Value (ELV).
NOTE   When the chemiluminescence method is the measurement principle used for AMS, reference should be made to EN 14181 and other relevant standards provided by CEN TC 264.
An Alternative Method to this SRM may be used provided that the user can demonstrate equivalence according to the Technical Specification CEN TS 14793, to the satisfaction of his national accreditation body or law.
This SRM has been evaluated during field tests on waste incineration, co-incineration and large combustion installations. It has been validated for sampling periods of 30 min in the range of 0 mgNO2/m3 to 1 300 mgNO2/m3 for large combustion plants and 0 mgNO2/m3 to 400 mgNO2/m3 for waste incineration, according to emission limit values (ELVs) laid down in the following Council Directives:
   Council Directive 2001/80/EC on the limitation of emissions of certain pollutants into the air from large combustion plants;
   Council Directive 2000/76/EC on waste incineration plants.
The ELVs for NOx (NO + NO2) in EU directives are expressed in mgNO2/m3, on dry basis, at a reference value for O2 and at the reference conditions (273 K and 101,3 kPa).

Emissionen aus stationären Quellen - Bestimmung der Massenkonzentration von Stickstoffoxiden (NOx) - Referenzverfahren : Chemilumineszenz

Diese Europäische Norm beschreibt das Chemilumineszenz-Verfahren, einschließlich Probenahmeeinrichtung und Gasaufbereitungssystem, von Abgaskonzentrationen an NO/NO2/NOx in Abgaskanälen, die ins Freie emittieren. Diese Europäische Norm ist das Standardreferenzverfahren (SRM) für die periodische Überwachung und für die Kalibrierung oder Überprüfung von automatischen Messsystemen (AMS), die permanent an einem Abgaskanal installiert sind. Wenn dieses Verfahren als Standardreferenzverfahren angewandt wird, muss nachgewiesen werden, dass die Verfahrenskenngrößen besser sind als die in dieser Europäischen Norm festgelegten Leistungskriterien und dass die Gesamtmessunsicherheit des Verfahrens kleiner ist als 10 %, bezogen auf den Tages-Emissionsgrenzwert (ELV).
ANMERKUNG   Wenn das Chemilumineszenz-Verfahren das Messprinzip der automatischen Messeinrichtung darstellt, sollte auf EN 14181 oder eine andere geeignete Norm des CEN/TC 264 Bezug genommen werden.
Ein Alternativverfahren zu diesem Standardreferenzverfahren darf angewendet werden, wenn der Anwender vor der nationalen Akkreditierungsstelle oder dem Gesetz die Äquivalenz nach der Technischen Spezifikation CEN/TS 14793 nachweisen kann.
Dieses Standardreferenzverfahren wurde in Feldversuchen an Abfallverbrennungsanlagen und Mitverbrennungsanlagen sowie an Großfeuerungsanlagen beurteilt. Es wurde validiert mit Probenahmedauern von 30 min für NO2-Konzentrationen im Bereich von 0 mg/m3 bis 1 300 mg/m3 an Großfeuerungsanlagen und im Bereich von 0 mg/m3 bis 400 mg/m3 an Abfallverbrennungsanlagen, entsprechend den in den folgenden Europäischen Richtlinien festgelegten Emissionsgrenzwerten:
-   Richtlinie 2001/80/EG des Europäischen Parlaments und des Rates vom 23. Oktober 2001 zur Begrenzung von Schadstoffemissionen von Großfeuerungsanlagen in die Luft;
-   Richtlinie 2000/76/EG des Europäischen Parlaments und des Rates vom 4. Dezember 2000 über die Verbrennung von Abfällen.

Emissions de sources fixes - Détermination de la concentration massique en oxides d'azote (NOx) - Méthode de référence: Chimuluminescence

Emisije nepremičnih virov – Določevanje masne koncentracije dušikovih oksidov (NOx) – Referenčna metoda: kemiluminiscenca

General Information

• Status: Withdrawn
• Publication Date: 15-Nov-2005
• Withdrawal Date: 10-Jan-2017
• ICS: 13.040.40 - Stationary source emissions
• Technical Committee: CEN/TC 264 - Air quality
• Drafting Committee: CEN/TC 264/WG 16 - Reference measurement methods for NOx, SO2, O2, CO and water vapour emissions
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 11-Jan-2017
• Directive: 88/609/EEC - Limitation of emissions of certain pollutants into the air from large combustion plants
• Directive: 89/369/EEC - Prevention of air pollution from new municipal waste incineration plants
• Directive: 89/429/EEC - Reduction of air pollution from existing municipal waste incineration plants
• Directive: 94/67/EC - Incineration of hazardous waste
• Mandate: M/278 - Standardization mandate to CEN for manual reference methods for the calibration of automated measurement systems for sulphur dioxide (S02) and nitrogen oxides (NOx) emissions in stack
• Ref Project: SIST EN 14792:2006 - Stationary source emissions - Determination of mass concentration of nitrogen oxides (NOx) - Reference method: Chemiluminescence

Relations

• Replaced By: EN 14792:2017 - Stationary source emissions - Determination of mass concentration of nitrogen oxides - Standard reference method: chemiluminescence
• Effective Date: 18-Jan-2017

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2006
(PLVLMHQHSUHPLþQLKYLURY±'RORþHYDQMHPDVQHNRQFHQWUDFLMHGXãLNRYLKRNVLGRY
12[±5HIHUHQþQDPHWRGDNHPLOXPLQLVFHQFD
Stationary source emissions - Determination of mass concentration of nitrogen oxides
(NOx) - Reference method: Chemiluminescence
Emissionen aus stationären Quellen - Bestimmung der Massenkonzentration von
Stickstoffoxiden (NOx) - Referenzverfahren : Chemilumineszenz
Emissions de sources fixes - Détermination de la concentration massique en oxides
d'azote (NOx) - Méthode de référence: Chimuluminescence
Ta slovenski standard je istoveten z: EN 14792:2005
ICS:
13.040.40 (PLVLMHQHSUHPLþQLKYLURY Stationary source emissions
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 14792
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2005
ICS 13.040.40
English Version
Stationary source emissions - Determination of mass
concentration of nitrogen oxides (NOx) - Reference method:
Chemiluminescence
missions de sources fixes - Détermination de la Emissionen aus stationären Quellen - Bestimmung der
concentration massique en oxides d'azote (NOx) - Méthode Massenkonzentration von Stickstoffoxiden (NOx) -
de référence: Chimuluminescence Referenzverfahren : Chemilumineszenz
This European Standard was approved by CEN on 30 September 2005.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14792:2005: E
worldwide for CEN national Members.

Contents Page
Foreword .4
1 Scope.5
2 Normative references.5
3 Terms and definitions.6
4 Principle.10
4.1 General.10
4.2 Measuring principle.10
5 Description of measuring equipment - Sampling and sample gas conditioning systems.11
5.1 General.11
5.2 Sampling line components.12
5.2.1 Sampling line.12
5.2.2 Filter.12
5.2.3 Sample cooler (configuration 1) .12
5.2.4 Permeation drier (configuration 2).12
5.2.5 Dilution system (configuration 3) .13
5.2.6 Heated line and heated analyser (configuration 4).13
5.2.7 Sample pump.13
5.2.8 Secondary filter.13
5.2.9 Flow controller and flow meter .13
6 Analyser equipment.14
6.1 General.14
6.2 Converter.14
6.3 Ozone generator.14
6.4 Reaction chamber.15
6.5 Optical filter.15
6.6 Photomultiplier tube.15
6.7 Ozone removal.15
7 Determination of the characteristics of the SRM: analyser, sampling and conditioning line.15
7.1 General.15
7.2 Relevant performance characteristics of the SRM and performance criteria .16
7.3 Establishment of the uncertainty budget.17
8 Field operation.18
8.1 Sampling location.18
8.2 Sampling point(s).18
8.3 Choice of the measuring system .19
8.4 Setting of the SRM on site.19
8.4.1 General.19
8.4.2 Preliminary zero and span check, and adjustments .20
8.4.3 Zero and span checks after measurement.20
9 Ongoing quality control.21
9.1 General.21
9.2 Frequency of checks .21
10 Expression of results.22
11 Evaluation of the method in the field.23
12 Equivalence with an alternative method .23
13 Test report.24
Annex A (informative) Four different sampling and conditioning configurations.25
Annex B (normative) Determination of converter efficiency .26
B.1 General.26
B.2 First method : cylinder gases for calibration.26
B.3 Second method : gaseous phase titration .26
Annex C (informative) Examples of different types of converters.28
C.1 Quartz converter.28
C.2 Low temperature converter (molybdenum).28
C.3 Stainless steel converter.28
Annex D (informative) Example of assessment of compliance of chemiluminescence method for
NO with requirements on emission measurements.29
x
D.1 General.29
D.2 Process of uncertainty estimation.29
D.2.1 Determination of the model equation.29
D.2.2 Quantification of uncertainty components .29
D.2.3 Calculation of the combined uncertainty.29
D.3 Specific conditions in the field .30
D.4 Performance characteristics of the method .31
D.4.1 NO measurement.32
D.4.2 NOx measurement .38
D.4.3 Results of standard uncertainties calculation.40
D.4.4 Calculation of combined uncertainties .42
D.5 Conversion of the concentrations in mg/m .42
D.5.1 No measurement.43
D.5.2 NO measurement.43
D.5.3 NO measurement .43
x
D.5.4 Combined uncertainty.43
D.5.5 Overall uncertainty.43
D.6 Evaluation of the compliance with the required measurement quality.43
Annex E (informative) Procedure of correction of data from drift effect.45
Annex F (informative) Evaluation of the method in the field.46
F.1 General.46

F.2 Characteristics of installations.46
F.3 Repeatability and reproducibility in the field.47
F.3.1 General.47
F.3.2 Repeatability.48
F.3.3 Reproducibility.49
Annex ZA (informative) Relationship wi
...