{
  "url": "https://openlegislation.uk/eu-decision-2017-1442/annex/division-5/division-5.1/division-5.1.3/division-1",
  "json_url": "https://openlegislation.uk/eu-decision-2017-1442/annex/division-5/division-5.1/division-5.1.3/division-1.json",
  "legislation": "eudn/2017/1442",
  "legislation_title": "Commission Implementing Decision (EU) 2017/1442 of 31 July 2017 establishing best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council, for large combustion plants (notified under document C(2017) 5225) (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2017-1442",
  "path": "annex/division/5/division/5.1/division/5.1.3/division/1",
  "kind": "division",
  "number": "BAT 56",
  "heading": "In order to prevent or reduce NOX emissions to air while limiting CO emissions to air from the combustion of process fuels from the chemical industry, BAT is to use one or a combination of the techniques given below.",
  "text": "Technique\nDescription\nApplicability\na.\nLow-NOX burners (LNB)\nSee descriptions in Section 8.3\nGenerally applicable\nb.\nAir staging\nc.\nFuel staging\nSee description in Section 8.3.\nApplying fuel staging when using liquid fuel mixtures may require a specific burner design\nd.\nFlue-gas recirculation\nSee descriptions in Section 8.3\nGenerally applicable to new combustion plants.\nApplicable to existing combustion plants within the constraints associated with chemical installation safety\ne.\nWater/steam addition\nThe applicability may be limited due to water availability\nf.\nFuel choice\nApplicable within the constraints associated with the availability of different types of fuel and/or an alternative use of the process fuel\ng.\nAdvanced control system\nThe applicability to old combustion plants may be constrained by the need to retrofit the combustion system and/or control command system\nh.\nSelective non-catalytic reduction (SNCR)\nApplicable to existing combustion plants within the constraints associated with chemical installation safety.\nNot applicable to combustion plants operated < 500 h/yr.\nThe applicability may be limited in the case of combustion plants operated between 500 h/yr and 1 500 h/yr with frequent fuel changes and frequent load variations\ni.\nSelective catalytic reduction (SCR)\nApplicable to existing combustion plants within the constraints associated with duct configuration, space availability and chemical installation safety.\nNot applicable to combustion plants operated < 500 h/yr.\nThere may be technical and economic restrictions for retrofitting existing combustion plants operated between 500 h/yr and 1 500 h/yr.\nNot generally applicable to combustion plants of < 100 MWth\nTable 34\nBAT-associated emission levels (BAT-AELs) for NOX emissions to air from the combustion of 100 % process fuels from the chemical industry in boilers\nFor plants operated < 1 500 h/yr, these BAT AELs do not apply.\nFor plants operated < 500 h/yr, these levels are indicative.\nFor existing plants of ≤ 500 MWth put into operation no later than 27 November 2003 using liquid fuels with a nitrogen content higher than 0,6 wt-%, the higher end of the BAT-AEL range is 380 mg/Nm3.\nFor existing plants put into operation no later than 7 January 2014, the higher end of the BAT-AEL range is 180 mg/Nm3.\nFor existing plants put into operation no later than 7 January 2014, the higher end of the BAT-AEL range is 210 mg/Nm3.\nFuel phase used in the combustion plant\nBAT-AELs (mg/Nm3)\nYearly average\nDaily average or average over the sampling period\nNew plant\nExisting plant\nNew plant\nExisting plant\nMixture of gases and liquids\n30–85\n80–290\n50–110\n100–330\nGases only\n20–80\n70–100\n30–100\n85–110\nAs an indication, the yearly average CO emission levels for existing plants operated ≥ 1 500 h/yr and for new plants will generally be < 5–30 mg/Nm3.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "For plants operated < 1 500 h/yr, these BAT AELs do not apply."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "For plants operated < 500 h/yr, these levels are indicative."
    },
    {
      "type": "footnote",
      "label": "f3",
      "text": "For existing plants of ≤ 500 MWth put into operation no later than 27 November 2003 using liquid fuels with a nitrogen content higher than 0,6 wt-%, the higher end of the BAT-AEL range is 380 mg/Nm3."
    },
    {
      "type": "footnote",
      "label": "f4",
      "text": "For existing plants put into operation no later than 7 January 2014, the higher end of the BAT-AEL range is 180 mg/Nm3."
    },
    {
      "type": "footnote",
      "label": "f5",
      "text": "For existing plants put into operation no later than 7 January 2014, the higher end of the BAT-AEL range is 210 mg/Nm3."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2017/1442/annex/division/5/division/5.1/division/5.1.3/division/1",
    "retrieved_at": "2026-11-01T15:13:23.628050+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}