{
  "url": "https://openlegislation.uk/eu-decision-2017-302/annex/division-3/division-4/division-4.9/division-4.9.3",
  "json_url": "https://openlegislation.uk/eu-decision-2017-302/annex/division-3/division-4/division-4.9/division-4.9.3.json",
  "legislation": "eudn/2017/302",
  "legislation_title": "Commission Implementing Decision (EU) 2017/302 of 15 February 2017 establishing best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council, for the intensive rearing of poultry or pigs (notified under document C(2017) 688) (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2017-302",
  "path": "annex/division/3/division/4/division/4.9/division/4.9.3",
  "kind": "division",
  "number": "4.9.3",
  "heading": "Techniques for monitoring of air cleaning systems",
  "text": "Technique\nDescription\nVerification of the air cleaning system performance by measuring ammonia, odour and/or dust under practical farm conditions, according to a prescribed measurement protocol and using EN standard methods or other methods (ISO, national or international) ensuring data of an equivalent scientific quality.\nThe verification is done by measurement of ammonia, odour and/or dust in the inlet and outlet air and of all additional parameters relevant for operation (e.g. air flow rate, pressure drop, temperature, pH level, conductivity). Measurements are performed under summer climatic conditions (a period of at least eight weeks with a ventilation rate > 80 % of the maximum ventilation rate) and winter climatic conditions (a period of at least eight weeks with a ventilation rate < 30 % of the maximum ventilation rate), with representative management and full capacity of the housing and only if an adequate time period (e.g. four weeks) has elapsed after the last change of wash water. Different sampling strategies can be applied.\nControl of the effective function of the air cleaning system (e.g. by continuously recording operational parameters or using alarm systems).\nOperation of an electronic logbook in order to record all measuring and operational data over a period of 1-5 years. Recorded parameters depend on the type of air cleaning system and may include:\n1.. pH and conductivity of scrubbing liquid;\n2.. air flow and pressure drop of the abatement system;\n3.. pump operating time;\n4.. water and acid consumption.\nOther parameters can be recorded manually.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2017/302/annex/division/3/division/4/division/4.9/division/4.9.3",
    "retrieved_at": "2026-11-01T15:13:35.783160+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."
}