{
  "url": "https://openlegislation.uk/radioactive-substances-electronic-valves-exemption-order-1967/article-2",
  "json_url": "https://openlegislation.uk/radioactive-substances-electronic-valves-exemption-order-1967/article-2.json",
  "legislation": "uksi/1967/1797",
  "legislation_title": "The Radioactive Substances (Electronic Valves) Exemption Order 1967",
  "legislation_url": "https://openlegislation.uk/radioactive-substances-electronic-valves-exemption-order-1967",
  "path": "article/2",
  "kind": "article",
  "number": "2",
  "heading": "Interpretation",
  "text": "(1) In this order—\n“the Act” means the Radioactive Substances Act 1960;\n“class 1 valve” means a valve falling within one or other of the following descriptions, that is to say—\n(a) a valve in which—\n(i) there is only one specified radionuclide; and\n(ii) the number of microcuries of the specified radionuclide does not exceed the number specified opposite its name in column (2) of the Schedule to this order;\n(b) a valve in which—\n(i) there are two or more specified radionuclides; and\n(ii) the number of microcuries of each specified radionuclide is such that, if that number were divided by the number specified opposite the name of that radionuclide in column (2) of the said Schedule, and if the corresponding quotient were similarly calculated in respect of every other specified radionuclide in the valve, and if all the quotients were then added together, the sum would not exceed 1;\n“class 2 valve” means a valve which is not a class 1 valve and which falls within one or other of the following descriptions, that is to say—\n(a) a valve in which—\n(i) there is only one specified radionuclide, that one not being tritium; and\n(ii) the number of microcuries of the specified radionuclide does not exceed the number specified opposite its name in column (3) of the Schedule to this order;\n(b) a valve in which—\n(i) there are two or more specified radionuclides;\n(ii) the number of microcuries of each specified radionuclide (other than tritium) is such that, if that number were divided by the number specified opposite the name of that radionuclide in column (3) of the said Schedule, and if the corresponding quotient were similarly calculated in respect of every other specified radionuclide (other than tritium) in the valve, and if all the quotients were then added together, the sum would not exceed 1; and\n(iii) the number of microcuries of tritium (if any) does not exceed 150;\n“class 2 waste” means radioactive waste falling within Article 10(1) of this order;\n“decay products” means, in relation to any radionuclide, the radionuclides succeeding it in the radioactive series in which it and they occur;\n“refuse disposal authority” means an authority acting in pursuance of statutory powers relating to the removal or disposal of refuse;\n“specified radionuclide” means a radionuclide specified in column (1) of the Schedule to this order;\nand any reference to an exempted valve is a reference to a valve falling within Article 5(a) of this order so kept or used as to be within the exemption from registration granted by Article 3, and any reference to an exempted article is a reference to an article falling within Article 5(b) so kept or used as to be within the exemption from registration granted by Article 3 or an article which is mobile radioactive apparatus in respect of which exemption from registration is granted by Article 8.\n(2) For the purposes of paragraph (a) of Article 7 of this order and paragraph 2(c) of Article 10, all premises in the same occupation and lying within the same curtilage shall together be treated as the premises in respect of which the conditions in those paragraphs apply.\n(3) The Interpretation Act 1889 applies to the interpretation of this order as it applies to the interpretation of an Act of Parliament.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1967/1797/article/2",
    "retrieved_at": "2026-10-29T23:29:17.081567+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."
}