# The Environmental Permitting (England and Wales) Regulations 2016, Paragraph 4: Table 3


The Table 3 referred to in paragraph 3 is—
Table 3
Radionuclides in secular equilibrium
Parent radionuclide
Daughter radionuclides
Fe-52+
Mn-52m
Zn-69m+
Zn-69
Sr-90+
Y-90
Sr-91+
Y-91m
Zr-95+
Nb-95m
Zr-97+
Nb-97m, Nb-97
Nb-97+
Nb-97m
Mo-99+
Tc-99m
Mo-101+
Tc-101
Ru-103+
Rh-103m
Ru-105+
Rh-105m
Ru-106+
Rh-106
Pd-103+
Rh-103m
Pd-109+
Ag-109m
Ag-108m+
Ag-108
Ag-110m+
Ag-110
Cd-109+
Ag-109m
Cd-115+
In-115m
Cd-115m+
In-115m
In-114m+
In-114
Sn-113+
In-113m
Sb-125+
Te-125m
Te-127m+
Te-127
Te-129m+
Te-129
Te-131m+
Te-131
Te-132+
I-132
Te-133+
I-133, Xe-133m, Xe-133
Te-133m+
Te-133, I-133, Xe-133m, Xe-133
I-131+
Xe-131m
Cs-137+
Ba-137m
Ce-144+
Pr-144, Pr-144m
Pb-210+
Bi-210, Po-210
Pb-212+
Bi-212, Tl-208
Bi-212+
Tl-208
Ra-223+
Rn-219, Po-215, Pb-211, Bi-211, Tl-207
Ra-224+
Rn-220, Po-216, Pb-212, Bi-212, Tl-208
Ra-226+
Rn-222, Po-218, Pb-214, Bi-214, Po-214
Ra-228+
Ac-228
Ac-227+
Th-227, Fr-223, Ra-223, Rn-219, Po-215, Pb-211, Bi-211, Tl-207, Po-211
Th-226+
Ra-222, Rn-218, Po-214
Th-228+
Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208
Th-229+
Ra-225, Ac-225, Fr-221, At-217, Bi-213, Tl-209, Pb-209
Th-232+
Ra-228, Ac-228, Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208
Th-232sec
Ra-228, Ac-228, Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Po-212, Tl-208
Th-234+
Pa-234m, Pa-234
U-230+
Th-226, Ra-222, Rn-218, Po-214
U-232+
Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208
U-235+
Th-231
U-235sec
Th-231, Pa-231, Ac-227, Th-227, Fr-223, Ra-223, Rn-219, Po-215, Pb-211, Bi-211, Tl-207, Po-211
U-238+
Th-234, Pa-234m, Pa-234
U-238sec
Th-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
U-240+
Np-240m, Np-240
Np-237+
Pa-233
Pu-244+
U-240, Np-240m, Np-240
Am-242m+
Np-238
Am-243+
Np-239
Cm-247+
Pu-243
Cf-253+
Cm-249
Es-254+
Bk-250
Es-254m+
Fm-254

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Source: https://www.legislation.gov.uk/ukdsi/2016/9780111150184/schedule/23/part/3/paragraph/4 (the official version)
Page: https://openlegislation.uk/draft-environmental-permitting-england-and-wales-regulations-2016/schedule-23/part-3/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.