{
  "url": "https://openlegislation.uk/control-of-industrial-major-accident-hazards-amendment-regulations-1990/schedule-3",
  "json_url": "https://openlegislation.uk/control-of-industrial-major-accident-hazards-amendment-regulations-1990/schedule-3.json",
  "legislation": "uksi/1990/2325",
  "legislation_title": "The Control of Industrial Major Accident Hazards (Amendment) Regulations 1990",
  "legislation_url": "https://openlegislation.uk/control-of-industrial-major-accident-hazards-amendment-regulations-1990",
  "path": "schedule/3",
  "kind": "schedule",
  "number": "3",
  "heading": "SCHEDULE TO BE SUBSTITUTED AS SCHEDULE 2 TO THE PRINCIPAL REGULATIONS",
  "text": "SCHEDULE 2\n(WHICH SETS OUT THE PROVISIONS OF ANNEX II TO THE DIRECTIVE)\nSTORAGE OTHER THAN OF SUBSTANCES LISTED IN SCHEDULE 3 ASSOCIATED WITH AN INSTALLATION REFERRED TO IN SCHEDULE 4\nRegulations 2(1), 4(1) and 6(1)\nThis Schedule applies to storage of dangerous substances and/or preparations at any place, installation, premises, building, or area of land, isolated or within an establishment, being a site used for the purpose of storage, except where that storage is associated with an installation covered by Schedule 4 and where the substances in question appear in Schedule 3.\nThe quantities set out below in Parts I and II relate to each store or group of stores belonging to the same manufacturer where the distance between the stores is not sufficient to avoid, in foreseeable circumstances, any aggravation of major accident hazards. These quantities apply in any case to each group of stores belonging to the same manufacturer where the distance between the stores is less than 500 metres.\nThe quantities to be considered are the maximum quantities which are, or are liable to be, in storage at any one time.\nPART I\nNAMED SUBSTANCES\nWhere a substance (or a group of substances) listed in Part I also falls within a category of Part II the quantities set out in Part I shall be used.\nQuantities (tonnes)\nSubstances or groups of substances\nFor application of Regulation 4\nFor application of Regulations 7 to 12\nColumn 1\nColumn 2\nColumn 3\nAcetylene\n5\n50\nAcrolein (2-propenal)\n20\n200\nAcrylonitrile\n20\n200\nAmmonia\n50\n500\nAmmonium nitrate(a)\n350\n2,500\nAmmonium nitrate in the form of fertilizers(b)\n1,250\n10,000\nBromine\n50\n500\nCarbon disulphide\n20\n200\nChlorine\n10\n75\nDiphenyl methane\ndi-isocyanate (MDI)\n20\n200\nEthylene dibromide (1,2 Dibromoethane)\n5\n50\nEthylene oxide\n5\n50\nFormaldehyde (concentration ≥90%)\n5\n50\nHydrogen\n5\n50\nHydrogen chloride (liquefied gas)\n25\n250\nHydrogen cyanide\n5\n20\nHydrogen fluoride\n5\n50\nHydrogen sulphide\n5\n50\nMethyl bromide (Bromomethane)\n20\n200\nMethyl isocyanate\n0.15\n0.15\n(150 kilograms)\n(150 kilograms)\nOxygen\n200\n2,000\nPhosgene (Carbonyl chloride)\n0.75\n0.75\n(750 kilograms)\n(750 kilograms)\nPropylene oxide\n5\n50\nSodium chlorate\n25\n250\nSulphur dioxide\n25\n250\nSulphur trioxide\n15\n100\nTetraethyl lead or tetramethyl lead\n5\n50\nToluene di-isocyanate (TDI)\n10\n100\n(a) This applies to ammonium nitrate and mixtures of ammonium nitrate where the nitrogen content derived from the ammonium nitrate is >28% by weight and to aqueous solutions of ammonium nitrate where the concentration of ammonium nitrate is >90% by weight.\n(b) This applies to straight ammonium nitrate fertilizers which comply with Council Directive 80/876/EEC “on the approximation of laws of the Member States relating to straight ammonium nitrate fertilizers of high nitrogen content” and to compound fertilizers where the nitrogen content derived from the ammonium nitrate is >28% by weight (a compound fertilizer contains ammonium nitrate together with phosphate and/or potash).\nPART II\nCATEGORIES OF SUBSTANCES AND PREPARATIONS NOT SPECIFICALLY NAMED IN PART I\nThe quantities of different substances and preparations of the same category are cumulative. Where there is more than one category specified in the same entry, the quantities of all substances and preparations of the specified categories in that entry shall be summed up.\nQuantities (tonnes)\nSubstances or groups of substances\nFor application of Regulation 4\nFor application of Regulations 7 to 12\nColumn 1\nColumn 2\nColumn 3\n1 Substances and preparations that are classified as “very toxic”\n5\n20\n2 Substances and preparations that are classified as “very toxic”, “toxic”(a), “oxidizing” or “explosive”\n10\n200\n3 Gaseous substances and preparations including those in liquefied form, which are gaseous at normal pressure and which are classified as “highly flammable”(b)\n50\n200\n4 Substances and preparations (excluding gaseous substances and preparations covered under item 3 above) which are classified as “highly flammable” or “extremely flammable”(c)\n5,000\n50,000\nSubstances and preparations shall be assigned categories in accordance with the classification provided for by regulation 5 of the Classification, Packaging and Labelling of Dangerous Substances Regulations 1984 (S.I. 1984/1244, amended by S.I. 1986/1922, 1988/766, 1989/2208 and 1990/1255) whether or not the substance or preparation is required to be classified for the purposes of those Regulations, or, in the case of a pesticide approved under the Food and Environment Protection Act 1985(c. 48), in accordance with the classification assigned to it by that approval.\n(a) Where the substances and preparations are in a state which gives them properties capable of producing a major accident hazard.\n(b) This includes flammable gases as defined in paragraph (c)(i) of Schedule 1.\n(c) This includes highly flammable liquids as defined in paragraph (c)(ii) of Schedule 1.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "OJ No L250, 23.9.80, p.7."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1990/2325/schedule/3",
    "retrieved_at": "2026-10-29T14:57:24.932854+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."
}