BS EN ISO 11771:2010 - Air quality. Determination of time-averaged mass emissions and emission factors. General approach – BSI British Standards

BS EN ISO 11771:2010

Air quality. Determination of time-averaged mass emissions and emission factors. General approach

Status : Confirmed, Current   Published : January 2011



BS EN ISO 11771:2010 Air quality — Determination of time-averaged mass emissions and emission factors — General approach (ISO 11771:2010)

BS EN ISO 11771 is an International Standard which describes the measurement procedures necessary to determine the mass emission of substances from stationary sources.

Empirically generated data are necessary to determine the uncertainty that can be associated with a stated result and to enable the verification of emission measurement reports.

BS EN ISO 11771 also describes the measurement procedures necessary to determine emission factors. An emission factor is a value that relates the quantity of a pollutant released with an activity associated with the release of that pollutant. Emission factors are useful when the operational conditions and time period for which they are representative is known.

Emission factors are used to calculate and report mass emissions. These mass emissions can be used for:

  • Emission trading;
  • Compiling polluting release and transfer registers;
  • Air quality modelling;
  • Air quality management;
  • Compliance with national emission limits.
  • Developing site-specific emission estimates;
  • Developing control strategies;
  • Risk assessments;
  • Deciding appropriate permit limits.

Contents of BS EN ISO 11771:

1 Scope
2 Terms and definitions
3 Symbols and abbreviated terms
4 Principle
5 Determination of mass emission rates
5.1 Planning
5.2 Measurements
5.3 Calculation of mass emission rates
5.4 Determination of time-averaged mass emission rates
5.5 Uncertainty estimation
6 Activity data
6.1 Collection of activity data
6.2 Activity data uncertainty
7 Determination of time-averaged mass emission factors
7.1 General
7.2 Calculating the time-averaged emission factor
7.3 Uncertainty of the time-averaged emission factor
7.4 Aggregating emission factors
7.5 Uncertainty estimation of aggregates of emission factors
8 Quality management system requirements
9 Reporting
9.1 General
9.2 Test report
Annex A (normative) Minimum requirements for the measurement plan
Annex B (informative) Example of uncertainty estimation
Annex C (informative) Data manipulation

Standard NumberBS EN ISO 11771:2010
TitleAir quality. Determination of time-averaged mass emissions and emission factors. General approach
StatusConfirmed, Current
Publication Date31 January 2011
Confirm Date07 June 2021
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)ISO/IEC 17025:2005, ISO 10780, ISO 10849, EN 14181, EN 13284-1, ISO 20988, ISO 9169:2006, EN 14789, ISO 14164, EN 15259, ISO 14956, EN 13211, ISO/IEC Guide 98-3:2008, EPA Conditional Test Method 041, EPA Method 2, CEN/TS 15675, ISO 11222:2002, ENV 13005:1999, GUM:1995, ISO 14064-1:2018, EN 13284-1:2017, BS ISO 12039:2019, ISO 4225:1994, ISO 9096:2017, ISO 12039:2019, BS EN ISO 14064-1:2019, EN 15267-1, ISO 7935, ISO 10396, EN 14790, ISO 3966:2008, ISO 14064-3, EN 15267-3
International RelationshipsEN ISO 11771:2010,ISO 11771:2010
Draft Superseded By08/30161739 DC
DescriptorsPollutant gases, Exhaust gases, Mass, Sampling methods, Air pollution, Estimation, Particulate air pollutants, Data acquisition, Emission, Measurement, Industrial air pollutants, Measurement characteristics, Mathematical calculations, Quality, Time, Air
Title in FrenchQualité de l'air. Détermination de la moyenne temporelle des émissions massiques et des facteurs d'émission. Approche générale
Title in GermanLuftbeschaffenheit. Ermittlung von zeitlich gemittelten Massenemissionen und Emissionsfaktoren. Allgemeine Vorgehensweise
ISBN978 0 580 58344 5
File Size1.56 MB

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