SCHEDULE 23Radioactive substances activities

PART 3Tables of radionuclides and summation rules

Table 34

The Table 3 referred to in paragraph 3 is—

Table 3Radionuclides 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