{
  "url": "https://openlegislation.uk/eu-decision-2014-738/annex/division-3/division-1.15/division-BATn2",
  "json_url": "https://openlegislation.uk/eu-decision-2014-738/annex/division-3/division-1.15/division-BATn2.json",
  "legislation": "eudn/2014/738",
  "legislation_title": "Commission Implementing Decision of 9 October 2014 establishing best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council on industrial emissions, for the refining of mineral oil and gas (notified under document C(2014) 7155) (Text with EEA relevance) (2014/738/EU)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2014-738",
  "path": "annex/division/3/division/1.15/division/BATn2",
  "kind": "division",
  "number": "BAT 51",
  "heading": "In order to prevent or reduce emissions to soil and groundwater from the storage of liquid hydrocarbon compounds, BAT is to use one or a combination of the techniques given below.",
  "text": "Techniques ii and iii may not be generally applicable where tanks are dedicated to products that require heat for liquid handling (e.g. bitumen), and where no leak is likely because of solidification.\nTechnique\nDescription\nApplicability\n(i)\nMaintenance programme including corrosion monitoring, prevention and control\nA management system including leak detection and operational controls to prevent overfilling, inventory control and risk-based inspection procedures on tanks at intervals to prove their integrity, and maintenance to improve tank containment. It also includes a system response to spill consequences to act before spills can reach the groundwater. To be especially reinforced during maintenance periods\nGenerally applicable\n(ii)\nDouble bottomed tanks\nA second impervious bottom that provides a measure of protection against releases from the first material\nGenerally applicable for new tanks and after overhaul of existing tanks\n(iii)\nImpervious membrane liners\nA continuous leak barrier under the entire bottom surface of the tank\nGenerally applicable for new tanks and after an overhaul of existing tanks\n(iv)\nSufficient tank farm bund containment\nA tank farm bund is designed to contain large spills potentially caused by a shell rupture or overfilling (for both environmental and safety reasons). Size and associated building rules are generally defined by local regulations\nGenerally applicable",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "Techniques ii and iii may not be generally applicable where tanks are dedicated to products that require heat for liquid handling (e.g. bitumen), and where no leak is likely because of solidification."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2014/738/annex/division/3/division/1.15/division/BATn2",
    "retrieved_at": "2026-11-01T15:14:36.977162+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."
}