{
  "url": "https://openlegislation.uk/draft-environmental-permitting-england-and-wales-regulations-2016/schedule-23/part-3/paragraph-4",
  "json_url": "https://openlegislation.uk/draft-environmental-permitting-england-and-wales-regulations-2016/schedule-23/part-3/paragraph-4.json",
  "legislation": "ukdsi/2016/9780111150184",
  "legislation_title": "The Environmental Permitting (England and Wales) Regulations 2016",
  "legislation_url": "https://openlegislation.uk/draft-environmental-permitting-england-and-wales-regulations-2016",
  "path": "schedule/23/part/3/paragraph/4",
  "kind": "paragraph",
  "number": "4",
  "heading": "Table 3",
  "text": "The Table 3 referred to in paragraph 3 is—\nTable 3\nRadionuclides in secular equilibrium\nParent radionuclide\nDaughter radionuclides\nFe-52+\nMn-52m\nZn-69m+\nZn-69\nSr-90+\nY-90\nSr-91+\nY-91m\nZr-95+\nNb-95m\nZr-97+\nNb-97m, Nb-97\nNb-97+\nNb-97m\nMo-99+\nTc-99m\nMo-101+\nTc-101\nRu-103+\nRh-103m\nRu-105+\nRh-105m\nRu-106+\nRh-106\nPd-103+\nRh-103m\nPd-109+\nAg-109m\nAg-108m+\nAg-108\nAg-110m+\nAg-110\nCd-109+\nAg-109m\nCd-115+\nIn-115m\nCd-115m+\nIn-115m\nIn-114m+\nIn-114\nSn-113+\nIn-113m\nSb-125+\nTe-125m\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\nI-131+\nXe-131m\nCs-137+\nBa-137m\nCe-144+\nPr-144, Pr-144m\nPb-210+\nBi-210, Po-210\nPb-212+\nBi-212, Tl-208\nBi-212+\nTl-208\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\nAc-227+\nTh-227, Fr-223, Ra-223, Rn-219, Po-215, Pb-211, Bi-211, Tl-207, Po-211\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\nNp-237+\nPa-233\nPu-244+\nU-240, Np-240m, Np-240\nAm-242m+\nNp-238\nAm-243+\nNp-239\nCm-247+\nPu-243\nCf-253+\nCm-249\nEs-254+\nBk-250\nEs-254m+\nFm-254",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/ukdsi/2016/9780111150184/schedule/23/part/3/paragraph/4",
    "retrieved_at": "2026-10-30T15:07:48.139767+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."
}