{
  "url": "https://openlegislation.uk/radioactive-substances-act-1993/schedule-1A",
  "json_url": "https://openlegislation.uk/radioactive-substances-act-1993/schedule-1A.json",
  "legislation": "ukpga/1993/12",
  "legislation_title": "Radioactive Substances Act 1993",
  "legislation_url": "https://openlegislation.uk/radioactive-substances-act-1993",
  "path": "schedule/1A",
  "kind": "schedule",
  "number": "1A",
  "heading": "Tables of NORM industrial activities, radionuclides and summation rules",
  "text": "Table 1\nNORM Industrial Activities\nPart 1\nProduction and use of thorium, or thorium compounds, and the production of products where thorium is deliberately added\nProduction and use of uranium or uranium compounds, and the production of products where uranium is deliberately added\nPart 2\nExtraction, production and use of rare earth elements and rare earth element alloys\nMining and processing of ores other than uranium ore\nProduction of oil and gas\nRemoval and management of radioactive scales and precipitates from equipment associated with industrial activities\nAny industrial activity utilising phosphate ore\nManufacture of titanium dioxide pigments\nThe extraction and refining of zircon and manufacture of zirconium compounds\nProduction of tin, copper, aluminium, zinc, lead and iron and steel\nActivities related to coal mine de-watering plants\nWater treatment associated with provision of drinking water and the remediation of contamination from other NORM industrial activities\nChina clay extraction\nGeothermal energy production\nTable 2\nConcentration of radionuclides: NORM industrial activities\nRadionuclide\nSolid or relevant liquid concentration in becquerels per gram (Bq/g)\nAny other liquid concentration in becquerels per litre (Bq/l)\nGaseous concentration in becquerels per cubic metre (Bq/m3)\nU-238sec\n1\n0.1\n0.001\nU-238+\n5\n10\n0.01\nU-234\n5\n10\n0.01\nTh-230\n10\n10\n0.001\nRa-226+\n1\n1\n0.1\nPb-210+\n5\n0.1\n0.1\nPo-210\n5\n0.1\n0.1\nU-235sec\n1\n0.1\n0.0001\nU-235+\n5\n10\n0.01\nPa-231\n5\n1\n0.001\nAc-227+\n1\n0.1\n0.001\nTh-232sec\n1\n0.1\n0.001\nTh-232\n5\n10\n0.001\nRa228+\n1\n0.1\n0.01\nTh-228+\n1\n1\n0.001\nTable 3\nConcentration of radionuclides\nRadionuclide\nConcentration in becquerels per gram (Bq/g)\nH-3\n102\nBe-7\n10\nC-14\n10\nF-18\n10\nNa-22\n0.1\nNa-24\n1\nSi-31\n103\nP-32\n103\nP-33\n103\nS-35\n102\nCI-36\n1\nCI-38\n10\nK-42\n102\nK-43\n10\nCa-45\n102\nCa-47\n10\nSc-46\n0.1\nSc-47\n102\nSc-48\n1\nV-48\n1\nCr-51\n102\nMn-51\n10\nMn-52\n1\nMn-52m\n10\nMn-53\n102\nMn-54\n0.1\nMn-56\n10\nFe-52+\n10\nFe-55\n103\nFe-59\n1\nCo-55\n10\nCo-56\n0.1\nCo-57\n1\nCo-58\n1\nCo-58m\n104\nCo-60\n0.1\nCo-60m\n103\nCo-61\n102\nCo-62m\n10\nNi-59\n102\nNi-63\n102\nNi-65\n10\nCu-64\n102\nZn-65\n0.1\nZn-69\n103\nZn-69m+\n10\nGa-72\n10\nGe-71\n104\nAs-73\n103\nAs-74\n10\nAs-76\n10\nAs-77\n103\nSe-75\n1\nBr-82\n1\nRb-86\n102\nSr-85\n1\nSr-85m\n102\nSr-87m\n102\nSr-89\n103\nSr-90+\n1\nSr-91+\n10\nSr-92\n10\nY-90\n103\nY-91\n102\nY-91m\n102\nY-92\n102\nY-93\n102\nZr-93\n10\nZr-95+\n1\nZr-97+\n10\nNb-93m\n10\nNb-94\n0.1\nNb-95\n1\nNb-97+\n10\nNb-98\n10\nMo-90\n10\nMo-93\n10\nMo-99+\n10\nMo-101+\n10\nTc-96\n1\nTc-96m\n103\nTc-97\n10\nTc-97m\n10\nTc-99\n1\nTc-99m\n102\nRu-97\n10\nRu-103+\n1\nRu-105+\n10\nRu-106+\n0.1\nRh-103m\n104\nRh-105\n102\nPd-103+\n103\nPd-109+\n102\nAg-105\n1\nAg-108m+\n0.1\nAg-110m+\n0.1\nAg-111\n10\nCd-109+\n1\nCd-115+\n102\nCd-115m+\n102\nIn-111\n10\nIn-113m\n102\nIn-114m\n10\nIn-115m\n102\nSn-113+\n1\nSn-125\n10\nSb-122\n10\nSb-124\n1\nSb-125+\n0.1\nTe-123m\n1\nTe-125m\n103\nTe-127\n103\nTe-127m+\n10\nTe-129\n102\nTe-129m+\n10\nTe-131\n102\nTe-131m+\n10\nTe-132+\n1\nTe-133+\n10\nTe-133m+\n10\nTe-134\n10\nI-123\n102\nI-125\n102\nI-126\n10\nI-129\n0.01\nI-130\n10\nI-131+\n10\nI-132\n10\nI-133\n10\nI-134\n10\nI-135\n10\nCs-129\n10\nCs-131\n103\nCs-132\n10\nCs-134\n0.1\nCs-134m\n103\nCs-135\n102\nCs-136\n1\nCs-137+\n1\nCs-138\n10\nBa-131\n10\nBa-140\n1\nLa-140\n1\nCe-139\n1\nCe-141\n100\nCe-143\n10\nCe-144+\n10\nPr-142\n102\nPr-143\n103\nNd-147\n102\nNd-149\n102\nPm-147\n103\nPm-149\n103\nSm-151\n103\nSm-153\n10\nEu-152\n0.1\nEu-152m\n10\nEu-154\n0.1\nEu-155\n1\nGd-153\n10\nGd-159\n102\nTb-160\n1\nDy-165\n103\nDy-166\n102\nHo-166\n102\nEr-169\n103\nEr-171\n102\nTm-170\n102\nTm-171\n103\nYb-175\n102\nLu-177\n102\nHf-181\n1\nTa-182\n0.1\nW-181\n10\nW-185\n103\nW-187\n10\nRe-186\n103\nRe-188\n102\nOs-185\n103\nOs-191\n102\nOs-191m\n103\nOs-193\n102\nIr-190\n1\nIr-192\n1\nIr-194\n102\nPt-191\n10\nPt-193m\n103\nPt-197\n103\nPt-197m\n102\nAu-198\n10\nAu-199\n102\nHg-197\n102\nHg-197m\n102\nHg-203\n10\nTI-200\n10\nTI-201\n102\nTI-202\n10\nTI-204\n1\nPb-203\n10\nPb-210+\n0.01\nPb-212+\n1\nBi-206\n1\nBi-207\n0.1\nBi-210\n10\nBi-212+\n1\nPo-203\n10\nPo-205\n10\nPo-207\n10\nPo-210\n0.01\nAt-211\n103\nRa-223+\n1\nRa-224+\n1\nRa-225\n10\nRa-226+\n0.01\nRa-227\n102\nRa-228+\n0.01\nAc-227+\n0.01\nAc-228\n1\nTh-226+\n103\nTh-227\n1\nTh-228+\n0.1\nTh-229\n0.1\nTh-230\n0.1\nTh-231\n102\nTh-232\n0.01\nTh-232+\n0.01\nTh-232sec\n0.01\nTh-234+\n10\nPa-230\n10\nPa-231\n0.01\nPa-233\n10\nU-230\n10\nU-231\n102\nU-232+\n0.1\nU-233\n1\nU-234\n1\nU-235+\n1\nU-235sec\n0.01\nU-236\n10\nU-237\n102\nU-238+\n1\nU-238sec\n0.01\nU-239\n102\nU-240+\n102\nNp-237+\n1\nNp-239\n102\nNp-240\n10\nPu-234\n103\nPu-235\n102\nPu-236\n1\nPu-237\n102\nPu-238\n0.1\nPu-239\n0.1\nPu-240\n0.1\nPu-241\n10\nPu-242\n0.1\nPu-243\n103\nPu-244+\n0.1\nAm-241\n0.1\nAm-242\n103\nAm-242m+\n0.1\nAm-243+\n0.1\nCm-242\n10\nCm-243\n1\nCm-244\n1\nCm-245\n0.1\nCm-246\n0.1\nCm-247+\n0.1\nCm-248\n0.1\nBk-249\n102\nCf-246\n103\nCf-248\n1\nCf-249\n0.1\nCf-250\n1\nCf-251\n0.1\nCf-252\n1\nCf-253\n102\nCf-253+\n102\nCf-254\n1\nEs-253\n102\nEs-254+\n0.1\nEs-254m+\n10\nFm-254\n104\nFm-255\n102\nAny other solid or non-aqueous liquid radionuclide that is not of natural terrestrial or cosmic origin\n0.01, unless the concentration which gives rise to the same 10 µSv/year dose criteria as used in column 2 of this table can be calculated by reference to the IAEA publication “Application of the Concepts of Exclusion, Exemption and Clearance” IAEA Safety Standards Series NO. RS-G-1.7.\nTable 4\nRadionuclides in Secular Equilibrium\nParent radionuclide\nDaughter radionuclides\nAc-227+\nTh-227, Fr-223, Ra-223, Rn-219, Po-215, Pb-211, Bi-211, Tl-207, Po-211\nAg-108m+\nAg-108\nAg-110m+\nAg-110\nAm-242m+\nNp-238\nAm-243+\nNp-239\nBi-212+\nTl-208\nCd-109+\nAg-109m\nCd-115+\nIn-115m\nCd-115m+\nIn-115m\nCe-144+\nPr-144, Pr-144m\nCf-253+\nCm-249\nCm-247+\nPu-243\nCs-137+\nBa-137m\nEs-254+\nBk-250\nEs-254m+\nFm-254\nFe-52+\nMn-52m\nI-131+\nXe-131m\nIn-114m+\nIn-114\nMo-99+\nTc-99m\nMo-101+\nTc-101\nNb-97+\nNb-97m\nNp-237+\nPa-233\nPb-210+\nBi-210, Po-210\nPb-212+\nBi-212, Tl-208\nPd-103+\nRh-103m\nPd-109+\nAg-109m\nPu-244+\nU-240, Np-240m, Np-240\nRa-223+\nRn-219, Po-215, Pb-211, Bi-211, Tl-207\nRa-224+\nRn-220, Po-216, Pb-212, Bi-212, Tl-208\nRa-226+\nRn-222, Po-218, Pb-214, Bi-214, Po-214\nRa-228+\nAc-228\nRu-103+\nRh-103m\nRu-105+\nRh-105m\nRu-106+\nRh-106\nSb-125+\nTe-125m\nSn-113+\nIn-113m\nSr-90+\nY-90\nSr-91+\nY-91m\nTe-127m+\nTe-127\nTe-129m+\nTe-129\nTe-131m+\nTe-131\nTe-132+\nI-132\nTe-133+\nI-133, Xe-133m, Xe-133\nTe-133m+\nTe-133, I-133, Xe-133m, Xe-133\nTh-226+\nRa-222, Rn-218, Po-214\nTh-228+\nRa-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208\nTh-229+\nRa-225, Ac-225, Fr-221, At-217, Bi-213, Tl-209, Pb-209\nTh-232+\nRa-228, Ac-228, Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208\nTh-232sec\nRa-228, Ac-228, Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Po-212, Tl-208\nTh-234+\nPa-234m, Pa-234\nU-230+\nTh-226, Ra-222, Rn-218, Po-214\nU-232+\nTh-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208\nU-235+\nTh-231\nU-235sec\nTh-231, Pa-231, Ac-227, Th-227, Fr-223, Ra-223, Rn-219, Po-215, Pb-211, Bi-211, Tl-207, Po-211\nU-238+\nTh-234, Pa-234m, Pa-234\nU-238sec\nTh-234, Pa-234m, Pa-234, U-234, Th-230, Ra-226, Rn-222, Po-218, Pb-214, Bi-214, Po-214, Pb-210, Bi-210, Po-210\nU-240+\nNp-240m, Np-240\nZn-69m+\nZn-69\nZr-95+\nNb-95m\nZr-97+\nNb-97m, Nb-97",
  "extent": "S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Sch. 1A repealed (S.) (1.9.2018) by The Environmental Authorisations (Scotland) Regulations 2018 (S.S.I. 2018/219), reg. 1, sch. 7 para. 1 (with reg. 78, sch. 5 paras. 3, 4, 6 and with transitional provisions and savings (25.11.2021) by The Environmental Authorisations (Scotland) Regulations 2018 (Transitional and Savings Provisions) Order 2021 (S.I. 2021/1309), arts. 1(1), 3-5)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Sch. 1A substituted for Sch. 1 (S.) (1.10.2011) by The Radioactive Substances Act 1993 Amendment (Scotland) Regulations 2011 (S.S.I. 2011/207), regs. 1(1), 7, sch.; and (N.I.) (1.10.2011) by The Radioactive Substances Act 1993 (Amendment) Regulations (Northern Ireland) 2011 (S.R. 2011/290), reg. 1, Sch."
    },
    {
      "type": "F",
      "label": "F3",
      "text": "Words in Sch. 1A inserted (N.I.) (1.6.2018) by The Radioactive Substances (Modification of Enactments) Regulations (Northern Ireland) 2018 (S.R. 2018/116), regs. 1(1), 2(8)(a)"
    },
    {
      "type": "F",
      "label": "F4",
      "text": "Sch. 1A Table 2 substituted (N.I.) (1.6.2018) by The Radioactive Substances (Modification of Enactments) Regulations (Northern Ireland) 2018 (S.R. 2018/116), regs. 1(1), 2(8)(b)"
    },
    {
      "type": "F",
      "label": "F5",
      "text": "Sch. 1A Table 3 substituted (N.I.) (1.6.2018) by The Radioactive Substances (Modification of Enactments) Regulations (Northern Ireland) 2018 (S.R. 2018/116), regs. 1(1), 2(8)(c)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/ukpga/1993/12/schedule/1A",
    "retrieved_at": "2026-10-29T09:35:14.428372+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."
}