{
  "url": "https://openlegislation.uk/eu-decision-2017-2117/annex/division-1/division-1.1/division-BAT+1",
  "json_url": "https://openlegislation.uk/eu-decision-2017-2117/annex/division-1/division-1.1/division-BAT+1.json",
  "legislation": "eudn/2017/2117",
  "legislation_title": "Commission Implementing Decision (EU) 2017/2117 of 21 November 2017 establishing best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council, for the production of large volume organic chemicals (notified under document C(2017) 7469) (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2017-2117",
  "path": "annex/division/1/division/1.1/division/BAT+1",
  "kind": "division",
  "number": "BAT 1:",
  "heading": "BAT is to monitor channelled emissions to air from process furnaces/heaters in accordance with EN standards and with at least the minimum frequency given in the table below. If EN standards are not available, BAT is to use ISO, national or other international standards that ensure the provision of data of an equivalent scientific quality.",
  "text": "Generic EN standards for continuous measurements are EN 15267-1, -2, and -3, and EN 14181. EN standards for periodic measurements are given in the table.\nRefers to the total rated thermal input of all process furnaces/heaters connected to the stack where emissions occur.\nIn the case of process furnaces/heaters with a total rated thermal input of less than 100 MWth operated less than 500 hours per year, the monitoring frequency may be reduced to at least once every year.\nThe minimum monitoring frequency for periodic measurements may be reduced to once every 6 months, if the emission levels are proven to be sufficiently stable.\nMonitoring of dust does not apply when combusting exclusively gaseous fuels.\nMonitoring of NH3 only applies when SCR or SNCR is used.\nIn the case of process furnaces/heaters combusting gaseous fuels and/or oil with a known sulphur content and where no flue-gas desulphurisation is carried out, continuous monitoring can be replaced either by periodic monitoring with a minimum frequency of once every 3 months or by calculation ensuring the provision of data of an equivalent scientific quality.\nSubstance/Parameter\nStandard(s)\nTotal rated thermal input (MWth)\nMinimum monitoring frequency\nMonitoring associated with\nCO\nGeneric EN standards\n≥ 50\nContinuous\nTable 2.1,\nTable 10.1\nEN 15058\n10 to < 50\nOnce every 3 months\nDust\nGeneric EN standards and EN 13284-2\n≥ 50\nContinuous\nBAT 5\nEN 13284-1\n10 to < 50\nOnce every 3 months\nNH3\nGeneric EN standards\n≥ 50\nContinuous\nBAT 7,\nTable 2.1\nNo EN standard available\n10 to < 50\nOnce every 3 months\nNOX\nGeneric EN standards\n≥ 50\nContinuous\nBAT 4,\nTable 2.1,\nTable 10.1\nEN 14792\n10 to < 50\nOnce every 3 months\nSO2\nGeneric EN standards\n≥ 50\nContinuous\nBAT 6\nEN 14791\n10 to < 50\nOnce every 3 months",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "Generic EN standards for continuous measurements are EN 15267-1, -2, and -3, and EN 14181. EN standards for periodic measurements are given in the table."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "Refers to the total rated thermal input of all process furnaces/heaters connected to the stack where emissions occur."
    },
    {
      "type": "footnote",
      "label": "f3",
      "text": "In the case of process furnaces/heaters with a total rated thermal input of less than 100 MWth operated less than 500 hours per year, the monitoring frequency may be reduced to at least once every year."
    },
    {
      "type": "footnote",
      "label": "f4",
      "text": "The minimum monitoring frequency for periodic measurements may be reduced to once every 6 months, if the emission levels are proven to be sufficiently stable."
    },
    {
      "type": "footnote",
      "label": "f5",
      "text": "Monitoring of dust does not apply when combusting exclusively gaseous fuels."
    },
    {
      "type": "footnote",
      "label": "f6",
      "text": "Monitoring of NH3 only applies when SCR or SNCR is used."
    },
    {
      "type": "footnote",
      "label": "f7",
      "text": "In the case of process furnaces/heaters combusting gaseous fuels and/or oil with a known sulphur content and where no flue-gas desulphurisation is carried out, continuous monitoring can be replaced either by periodic monitoring with a minimum frequency of once every 3 months or by calculation ensuring the provision of data of an equivalent scientific quality."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2017/2117/annex/division/1/division/1.1/division/BAT+1",
    "retrieved_at": "2026-11-01T15:13:18.480772+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."
}