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The Environmental Permitting (England and Wales) Regulations 2016
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Table 3
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4. 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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