{
  "url": "https://openlegislation.uk/control-of-electromagnetic-fields-at-work-regulations-northern-ireland-2016/schedule-1/part-2/chapter-2",
  "json_url": "https://openlegislation.uk/control-of-electromagnetic-fields-at-work-regulations-northern-ireland-2016/schedule-1/part-2/chapter-2.json",
  "legislation": "nisr/2016/266",
  "legislation_title": "The Control of Electromagnetic Fields at Work Regulations (Northern Ireland) 2016",
  "legislation_url": "https://openlegislation.uk/control-of-electromagnetic-fields-at-work-regulations-northern-ireland-2016",
  "path": "schedule/1/part/2/chapter/2",
  "kind": "chapter",
  "number": null,
  "heading": "Action Levels – thermal effects",
  "text": "Table AL3 - ALs for exposure to electromagnetic fields from 100 kHz to 300 GHz\nFrequency Range\nExternal electric field strength ALs (E) [Vm-1]\nMagnetic flux density ALs (B) [µT]\nPower density AL (S) [Wm–2]\n100 kHz ≤ f < 1 MHz\n6.1 × 102\n2.0 × 106/f\n-\n1 ≤ f < 10 MHz\n6.1 × 108/f\n2.0 × 106/f\n-\n10 ≤ f < 400 MHz\n61\n0.2\n-\n400 MHz ≤ f < 2 GHz\n3 × 10-3 f1/2\n1.0 × 10-5 f1/2\n-\n2 ≤ f < 6 GHz\n1.4 × 102\n4.5 × 10-1\n-\n6 ≤ f ≤ 300 GHz\n1.4 × 102\n4.5 × 10-1\n50\nExposure levels not exceeding the ALs will be compliant with:\nUp to 6 GHz: the health effect ELVs in Table ELV4\n6 – 300 GHz: the health effect ELV in Table ELV6\nThe health effect ELV in Table ELV6\nTable AL4 – AL for exposure to electromagnetic fields from 10 to 110MHz\nFrequency range\nLimb current AL (IL) [mA]\n10 ≤ f ≤ 110 MHz\n100\nExposure levels not exceeding the ALs will be compliant with:\nThe health effect ELV in Table ELV4 - localised SAR in the limbs",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/nisr/2016/266/schedule/1/part/2/chapter/2",
    "retrieved_at": "2026-10-29T00:55:49.544396+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."
}