# The Environmental Permitting (England and Wales) Regulations 2016, Paragraph 30: Table 8


The Table 8 referred to in paragraph 29 is—
Table 8
Radionuclides in secular equilibrium
Parent radionuclide
Daughter radionuclides
Sr-90+
Y-90
Zr-93+
Nb-93m
Zr-95+
Nb-95
Zr-97+
Nb-97
Ru-106+
Rh-106
Ag-108m+
Ag-108
Cs-137+
Ba-137m
Ba-140+
La-140
Ce-144+
Pr-144
Pb-210+
Bi-210, Po-210
Pb-212+
Bi-212, Tl-208, Po-212
Bi-212+
Tl-208, Po-212
Rn-220+
Po-216
Rn-222+
Po-218, Pb-214, Bi-214, Po-214
Ra-223+
Rn-219, Po-215, Pb-211, Bi-211, Tl-207
Ra-224+
Where Ra-224+ is referred to in Table 5: Rn-220, Po-216, Pb-212, Bi-212, Tl-208, Po-212
Where Ra-224+ is referred to in Table 7: Pb-212
Ra-226+
Where Ra-226+ is referred to in Table 5: Rn-222, Po-218, Pb-214, Bi-214, Pb-210, Bi-210, Po-210, Po-214
Where Ra-226+ is referred to in Table 7: Rn-222, Po-218, Pb-214, Bi-214, Po-214
Ra-228+
Ac-228
Th-226+
Ra-222, Rn-218, Po-214
Th-228+
Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Po-212, Tl-208
Th-229+
Ra-225, Ac-225, Fr-221, At-217, Bi-213, Po-213, Pb-209
Th-232 sec
Ra-228, Ac-228, Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Po-212, Tl-208
Th-234+
Pa-234m
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, Po-212
U-235+
Th-231
U-238+
Th-234, Pa-234m, Pa-234
U-238 sec
Th-234, Pa-234m, U-234, Th-230, Ra-226, Rn-222, Po-218, Pb-214, Bi-214, Pb-210, Bi-210, Po-210, Po-214
U-240+
Np-240
Np-237+
Pa-233
Am-242m+
Am-242
Am-243+
Np-239

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Source: https://www.legislation.gov.uk/ukdsi/2016/9780111150184/schedule/23/paragraph/30 (the official version)
Page: https://openlegislation.uk/draft-environmental-permitting-england-and-wales-regulations-2016/schedule-23/paragraph-30
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.