{
  "url": "https://openlegislation.uk/clean-air-height-of-chimneys-exemption-regulations-1969/regulation-3",
  "json_url": "https://openlegislation.uk/clean-air-height-of-chimneys-exemption-regulations-1969/regulation-3.json",
  "legislation": "uksi/1969/411",
  "legislation_title": "The Clean Air (Height of Chimneys) (Exemption) Regulations 1969",
  "legislation_url": "https://openlegislation.uk/clean-air-height-of-chimneys-exemption-regulations-1969",
  "path": "regulation/3",
  "kind": "regulation",
  "number": "3",
  "heading": "Exempted boilers and plant",
  "text": "(1) The purposes set out in paragraph (2) below shall be prescribed purposes in relation to section 6(11) of the Clean Air Act 1968 (which section relates to the height of chimneys serving new or enlarged furnaces connected with boilers or industrial plant, but exempts from certain of its provisions any boiler or plant used or to be used wholly for a prescribed purpose).\n(2) The said purposes are—\n(a) temporarily replacing any other boiler or plant which is—\n(i) under inspection, maintenance or repair;\n(ii) being rebuilt; or\n(iii) being replaced by a permanent boiler or plant;\n(b) providing a temporary source of heat or power during any building operation or work of engineering construction (within the meaning of section 176 of the Factories Act 1961);\n(c) providing a temporary source of heat or power for investigation or research;\n(d) providing products of combustion to heat other plant (whether directly or indirectly) to an operating temperature;\n(e) providing heat or power by mobile or transportable plant for the purposes of agriculture (within the meaning of section 109(3) of the Agriculture Act 1947).",
  "extent": "E+W+S",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Regulations revoked (E.) (7.1.2015) by The Clean Air (Miscellaneous Provisions) (England) Regulations 2014 (S.I. 2014/3318), reg. 2(1), Sch. 4"
    },
    {
      "type": "I",
      "label": "I1",
      "text": "Reg. 3 in force at 1.4.1969, see reg. 1"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1969/411/regulation/3",
    "retrieved_at": "2026-10-29T23:13:54.033038+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."
}