{
  "url": "https://openlegislation.uk/equipment-and-protective-systems-intended-for-use-in-potentially-explosive-atmospheres-regulations-2016/schedule-1/paragraph-22",
  "json_url": "https://openlegislation.uk/equipment-and-protective-systems-intended-for-use-in-potentially-explosive-atmospheres-regulations-2016/schedule-1/paragraph-22.json",
  "legislation": "uksi/2016/1107",
  "legislation_title": "The Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres Regulations 2016",
  "legislation_url": "https://openlegislation.uk/equipment-and-protective-systems-intended-for-use-in-potentially-explosive-atmospheres-regulations-2016",
  "path": "schedule/1/paragraph/22",
  "kind": "paragraph",
  "number": "22",
  "heading": "Requirements in respect of safety-related devices",
  "text": "(1) Safety devices must function independently of any measurement or control devices, or both measurement and control devices required for operation.\n(2) As far as possible, failure of a safety device must be detected sufficiently rapidly by appropriate technical means to prevent dangerous situations from occurring.\n(3) The fail-safe principle is to be applied in general.\n(4) Safety-related switching must in general directly actuate the relevant control devices without intermediate software command.\n(5) In the event of a safety device failure, equipment or protective systems or both must wherever possible, be secured.\n(6) Emergency stop controls of safety devices must, as far as possible, be fitted with restart lockouts. A new start command may take effect on normal operation only after the restart lockouts have been intentionally reset.",
  "extent": "E+W+S",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "I",
      "label": "I1",
      "text": "Sch. 1 para. 22 in force at 8.12.2016, see reg. 1(1)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2016/1107/schedule/1/paragraph/22",
    "retrieved_at": "2026-10-28T23:18:07.920209+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."
}