# Commission Implementing Decision of 28 February 2012 establishing the best available techniques (BAT) conclusions under Directive 2010/75/EU of the European Parliament and of the Council on industrial emissions for the manufacture of glass (notified under document C(2012) 865) (Text with EEA relevance) (2012/134/EU), Division: Averaging periods and reference conditions for air emissions Extent: E+W+S+N.I. Unless stated otherwise, emission levels associated with the best available techniques (BAT-AELs) for air emissions given in these BAT conclusions apply under the reference conditions shown in Table 1. All values for concentrations in waste gases refer to standard conditions: dry gas, temperature 273,15 K, pressure 101,3 kPa. For discontinuous measurements BAT-AELs refer to the average value of three spot samples of at least 30 minutes each; for regenerative furnaces the measuring period should cover a minimum of two firing reversals of the regenerator chambers For continuous measurements BAT-AELs refer to daily average values Table 1 Reference conditions for BAT-AELs concerning air emissions Activities Unit Reference conditions Melting activities Conventional melting furnace in continuous melters mg/Nm3 8 % oxygen by volume Conventional melting furnace in discontinuous melters mg/Nm3 13 % oxygen by volume Oxy-fuel-fired furnaces kg/tonne melted glass The expression of emission levels measured as mg/Nm3 to a reference oxygen concentration is not applicable Electric furnaces mg/Nm3 or kg/tonne melted glass The expression of emission levels measured as mg/Nm3 to a reference oxygen concentration is not applicable Frit melting furnaces mg/Nm3 or kg/tonne melted frit Concentrations refer to 15 % oxygen by volume. When air-gas firing is used, BAT AELs expressed as emission concentration (mg/Nm3) apply. When only oxy-fuel firing is employed, BAT AELs expressed as specific mass emissions (kg/tonne melted frit) apply. When oxygen-enriched air-fuel firing is used, BAT AELs expressed as either emission concentration (mg/Nm3) or as specific mass emissions (kg/tonne melted frit) apply All type of furnaces kg/tonne melted glass The specific mass emissions refer to 1 tonne of melted glass Non-melting activities, including downstream processes All processes mg/Nm3 No correction for oxygen All processes kg/tonne glass The specific mass emissions refer to 1 tonne of produced glass --- Source: https://www.legislation.gov.uk/eudn/2012/134/annex/division/3/division/1 (the official version) Page: https://openlegislation.uk/eu-decision-2012-134/annex/division-3/division-1 Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.