{
  "url": "https://openlegislation.uk/environmental-authorisations-scotland-regulations-2018/schedule-27/paragraph-3",
  "json_url": "https://openlegislation.uk/environmental-authorisations-scotland-regulations-2018/schedule-27/paragraph-3.json",
  "legislation": "ssi/2018/219",
  "legislation_title": "The Environmental Authorisations (Scotland) Regulations 2018",
  "legislation_url": "https://openlegislation.uk/environmental-authorisations-scotland-regulations-2018",
  "path": "schedule/27/paragraph/3",
  "kind": "paragraph",
  "number": "3",
  "heading": "Interpretation: general",
  "text": "In this schedule—\n“biomass” has the meaning given in paragraph 3(1) of schedule 19 of these Regulations,\n“diesel engine” has the meaning given in paragraph 2 of schedule 21 of these Regulations,\n“dual fuel engine” means an internal combustion engine that uses compression ignition and operates according to the Diesel cycle when burning liquid fuels, and according to the Otto cycle when burning gaseous fuels,\n“dust” means particles, of any shape, structure or density, dispersed in the gas phase at the sampling point conditions, which may be collected by filtration under specified conditions after representative sampling of the gas to be analysed, and that remain upstream of the filter and on the filter after drying under specified conditions,\n“emission” means the discharge of substances from a combustion plant into the air,\n“engine” means a gas engine, diesel engine or dual fuel engine,\n“existing medium combustion plant” means a medium combustion plant put into operation on or before 20 December 2018,\n“gas engine” means an internal combustion engine that operates according to the Otto cycle and uses spark ignition to burn fuel,\n“gas oil” means—\n(a)any petroleum-derived liquid fuel falling within CN codes 2710 19 25, 2710 19 29, 2710 19 47, 2710 19 48, 2710 20 17 or 2710 20 19, or\n(b)any petroleum-derived liquid fuel of which less than 65% by volume (including losses) distils at 250°C and of which at least 85% by volume (including losses) distils at 350°C by the ASTM D86 method,\n“gas turbine” means any rotating machine which converts thermal energy into mechanical work, consisting mainly of a compressor, a thermal device in which fuel is oxidised in order to heat the working fluid, and a turbine,\n“heavy fuel oil” means—\n(a)any petroleum-derived liquid fuel falling within CN codes 2710 19 51 to 2710 19 68, 2710 20 31, 2710 20 35, or 2710 20 39,\n(b)any petroleum-derived liquid fuel, other than gas oil, which, by reason of its distillation limits, falls within the category of heavy oils intended for use as fuel and of which less than 65% by volume (including losses) distils at 250°C by the ASTM D86 method, or\n(c)any petroleum product for which distillation cannot be determined by the ASTM D86 method,\n“micro-isolated system” (MIS) means any electricity system with consumption less than 500 GWh in the year 1996 where there is no connection with other systems,\n“natural gas” means naturally occurring methane with no more than 20% (by volume) of inerts and other constituents,\n“new medium combustion plant” means a medium combustion plant other than an existing medium combustion plant,\n“nitrogen oxides” (NOx) means nitric oxide and nitrogen dioxide, expressed as nitrogen dioxide (NO2),\n“operating hours” has the meaning given in paragraph 2 of schedule 21 of these Regulations,\n“refinery fuel” means solid, liquid or gaseous combustible material from the distillation and conversion steps of the refining of crude oil, including refinery fuel gas, syngas, refinery oils and pet coke,\n“small isolated system (SIS)” means any electricity system with consumption of less than 3000 GWh in the year 1996, where less than 5% of annual consumption is obtained through interconnection with other systems,\n“stack” has the meaning given in paragraph 2 of schedule 21 of these Regulations,\n“zone” means part of the territory of Scotland as determined by the Scottish Ministers under regulation 4 of the Air Quality Standards (Scotland) Regulations 2010.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Sch. 27 inserted (1.11.2025) by The Environmental Authorisations (Scotland) Amendment Regulations 2025 (S.S.I. 2025/165), reg. 1(2), sch. 18 (with sch. 23)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/ssi/2018/219/schedule/27/paragraph/3",
    "retrieved_at": "2026-10-28T21:11:56.403037+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."
}