{
  "url": "https://openlegislation.uk/gas-safety-management-regulations-1996/schedule-3/part-I/paragraph-1",
  "json_url": "https://openlegislation.uk/gas-safety-management-regulations-1996/schedule-3/part-I/paragraph-1.json",
  "legislation": "uksi/1996/551",
  "legislation_title": "Gas Safety (Management) Regulations 1996",
  "legislation_url": "https://openlegislation.uk/gas-safety-management-regulations-1996",
  "path": "schedule/3/part/I/paragraph/1",
  "kind": "paragraph",
  "number": "1",
  "heading": null,
  "text": "The content and characteristics of the gas shall be in accordance with the values specified in the following table.\nContent or characteristic\nValue\nhydrogen sulphide content\n≤5 mg/m3;\ntotal sulphur content (including H2S)\n≤50 mg/m3;\nhydrogen content\n≤0.1% (molar);\noxygen content\n≤1.0% (molar), where the gas is conveyed in a pipe operated at a pressure of ≤38 barg, and ≤0.2% molar, where the gas is conveyed in a pipe operated at a pressure of >38 barg;\nimpurities\nshall not contain solid or liquid material which may interfere with the integrity or operation of pipes or any gas appliance (within the meaning of regulation 2(1) of the 1998 Regulations) which a consumer could reasonably be expected to operate;\nhydrocarbon dewpoint and water dewpoint\nshall be at such levels that they do not interfere with the integrity or operation of pipes or any gas appliance (within the meaning of regulation 2(1) of the 1998 Regulations) which a consumer could reasonably be expected to operate;\nRD\n≤0.700\nWN\n(i) ≤51.41 MJ/m3, and\n(ii) ≥46.50 MJ/m3;\n...\n...\n...\n...",
  "extent": "E+W+S",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Words in Sch. 3 Pt. 1 table substituted (6.4.2023) by The Gas Safety (Management) (Amendment) Regulations 2023 (S.I. 2023/284), regs. 1(3), 14(2)(a)(i)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Words in Sch. 3 Pt. 1 table substituted (6.4.2023) by The Gas Safety (Management) (Amendment) Regulations 2023 (S.I. 2023/284), regs. 1(3), 14(2)(a)(ii)"
    },
    {
      "type": "F",
      "label": "F3",
      "text": "Words in Sch. 3 Pt. 1 table substituted (6.4.2023) by The Gas Safety (Management) (Amendment) Regulations 2023 (S.I. 2023/284), regs. 1(3), 14(2)(a)(iii)"
    },
    {
      "type": "F",
      "label": "F4",
      "text": "Words in Sch. 3 Pt. 1 table inserted (6.4.2023) by The Gas Safety (Management) (Amendment) Regulations 2023 (S.I. 2023/284), regs. 1(3), 14(2)(a)(iv)"
    },
    {
      "type": "F",
      "label": "F5",
      "text": "Words in Sch. 3 Pt. 1 table substituted (6.4.2025) by The Gas Safety (Management) (Amendment) Regulations 2023 (S.I. 2023/284), regs. 1(2), 14(2)(a)(v) (as amended by S.I. 2023/320, regs. 1, 2)"
    },
    {
      "type": "F",
      "label": "F6",
      "text": "Words in Sch. 3 Pt. 1 table omitted (6.4.2023) by virtue of The Gas Safety (Management) (Amendment) Regulations 2023 (S.I. 2023/284), regs. 1(3), 14(2)(a)(vi)"
    },
    {
      "type": "F",
      "label": "F7",
      "text": "Words in Sch. 3 Pt. 1 table omitted (6.4.2023) by virtue of The Gas Safety (Management) (Amendment) Regulations 2023 (S.I. 2023/284), regs. 1(3), 14(2)(a)(vii)"
    },
    {
      "type": "I",
      "label": "I1",
      "text": "Sch. 3 Pt. I para. 1 in force at 1.4.1996, see reg. 1"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1996/551/schedule/3/part/I/paragraph/1",
    "retrieved_at": "2026-10-29T12:50:23.662832+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."
}