Title 49

SECTION 173.436

173.436 Exempt material activity concentrations and exempt consignment activity limits for radionuclides.

§ 173.436 Exempt material activity concentrations and exempt consignment activity limits for radionuclides.

The Table of Exempt material activity concentrations and exempt consignment activity limits for radionuclides is as follows:

Symbol of
radionuclide		 Element and atomic number Activity concentration for exempt material
(Bq/g)		 Activity concentration for exempt material
(Ci/g)		 Activity limit for exempt consignment
(Bq)		 Activity limit for exempt consignment
(Ci)
Ac-225 Actinium (89) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Ac-227 1.0 × 10−1 2.7 × 10−12 1.0 × 10 3 2.7 × 10−8
Ac-228 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Ag-105 Silver (47) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Ag-108m (b) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Ag-110m 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Ag-111 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Al-26 Aluminum (13) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Am-241 Americium (95) 1.0 2.7 × 10−11 1.0 × 10 4 2.7 × 10−7
Am-242m (b) 1.0 2.7 × 10−11 1.0 × 10 4 2.7 × 10−7
Am-243 (b) 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
Ar-37 Argon (18) 1.0 × 10 6 2.7 × 10−5 1.0 × 10 8 2.7 × 10−3
Ar-39 1.0 × 10 7 2.7 × 10−4 1.0 × 10 4 2.7 × 10−7
Ar-41 1.0 × 10 2 2.7 × 10−9 1.0 × 10 9 2.7 × 10−2
As-72 Arsenic (33) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
As-73 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
As-74 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
As-76 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
As-77 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
At-211 Astatine (85) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Au-193 Gold (79) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Au-194 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Au-195 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Au-198 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Au-199 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Ba-131 Barium (56) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Ba-133 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Ba-133m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Ba-140 (b) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Be-7 Beryllium (4) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Be-10 1.0 × 10 4 2.7 × 10−7 1.0 × 10 6 2.7 × 10−5
Bi-205 Bismuth (83) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Bi-206 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Bi-207 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Bi-210 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Bi-210m 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Bi-212 (b) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Bk-247 Berkelium (97) 1.0 2.7 × 10−11 1.0 × 10 4 2.7 × 10−7
Bk-249 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Br-76 Bromine (35) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Br-77 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Br-82 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
C-11 Carbon (6) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
C-14 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
Ca-41 Calcium (20) 1.0 × 10 5 2.7 × 10−6 1.0 × 10 7 2.7 × 10−4
Ca-45 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
Ca-47 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Cd-109 Cadmium (48) 1.0 × 10 4 2.7 × 10−7 1.0 × 10 6 2.7 × 10−5
Cd-113m 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Cd-115 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Cd-115m 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Ce-139 Cerium (58) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Ce-141 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Ce-143 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Ce-144 (b) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Cf-248 Californium (98) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Cf-249 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
Cf-250 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Cf-251 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
Cf-252 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Cf-253 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Cf-254 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
Cl-36 Chlorine (17) 1.0 × 10 4 2.7 × 10−7 1.0 × 10 6 2.7 × 10−5
Cl-38 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Cm-240 Curium (96) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Cm-241 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Cm-242 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Cm-243 1.0 2.7 × 10−11 1.0 × 10 4 2.7 × 10−7
Cm-244 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Cm-245 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
Cm-246 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
Cm-247 1.0 2.7 × 10−11 1.0 × 10 4 2.7 × 10−7
Cm-248 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
Co-55 Cobalt (27) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Co-56 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Co-57 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Co-58 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Co-58m 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
Co-60 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Cr-51 Chromium (24) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Cs-129 Cesium (55) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Cs-131 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Cs-132 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Cs-134 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Cs-134m 1.0 × 10 3 2.7 × 10−8 1.0 × 10 5 2.7 × 10−6
Cs-135 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
Cs-136 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Cs-137 (b) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Cu-64 Copper (29) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Cu-67 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Dy-159 Dysprosium (66) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Dy-165 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Dy-166 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Er-169 Erbium (68) 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
Er-171 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Eu-147 Europium (63) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Eu-148 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Eu-149 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Eu-150 (short lived) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Eu-150 (long lived) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Eu-152 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Eu-152m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Eu-154 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Eu-155 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Eu-156 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
F-18 Fluorine (9) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Fe-52 Iron (26) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Fe-55 1.0 × 10 4 2.7 × 10−7 1.0 × 10 6 2.7 × 10−5
Fe-59 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Fe-60 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Ga-67 Gallium (31) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Ga-68 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Ga-72 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Gd-146 Gadolinium (64) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Gd-148 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Gd-153 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Gd-159 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Ge-68 Germanium (32) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Ge-71 1.0 × 10 4 2.7 × 10−7 1.0 × 10 8 2.7 × 10−3
Ge-77 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Hf-172 Hafnium (72) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Hf-175 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Hf-181 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Hf-182 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Hg-194 Mercury (80) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Hg-195m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Hg-197 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Hg-197m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Hg-203 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Ho-166 Holmium (67) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 5 2.7 × 10−6
Ho-166m 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
I-123 Iodine (53) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
I-124 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
I-125 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
I-126 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
I-129 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
I-131 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
I-132 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
I-133 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
I-134 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
I-135 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
In-111 Indium (49) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
In-113m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
In-114m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
In-115m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Ir-189 Iridium (77) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Ir-190 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Ir-192 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Ir-194 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
K-40 Potassium (19) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
K-42 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
K-43 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Kr-79 Krypton (36) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 5 2.7 × 10−6
Kr-81 Krypton (36) 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
Kr-85 1.0 × 10 5 2.7 × 10−6 1.0 × 10 4 2.7 × 10−7
Kr-85m 1.0 × 10 3 2.7 × 10−8 1.0 × 10 10 2.7 × 10−1
Kr-87 1.0 × 10 2 2.7 × 10−9 1.0 × 10 9 2.7 × 10−2
La-137 Lanthanum (57) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
La-140 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Lu-172 Lutetium (71) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Lu-173 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Lu-174 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Lu-174m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Lu-177 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Mg-28 Magnesium (12) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Mn-52 Manganese (25) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Mn-53 1.0 × 10 4 2.7 × 10−7 1.0 × 10 9 2.7 × 10−2
Mn-54 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Mn-56 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Mo-93 Molybdenum (42) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 8 2.7 × 10−3
Mo-99 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
N-13 Nitrogen (7) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 9 2.7 × 10−2
Na-22 Sodium (11) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Na-24 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Nb-93m Niobium (41) 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
Nb-94 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Nb-95 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Nb-97 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Nd-147 Neodymium (60) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Nd-149 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Ni-59 Nickel (28) 1.0 × 10 4 2.7 × 10−7 1.0 × 10 8 2.7 × 10−3
Ni-63 1.0 × 10 5 2.7 × 10−6 1.0 × 10 8 2.7 × 10−3
Ni-65 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Np-235 Neptunium (93) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Np-236 (short-lived) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Np-236 (long-lived) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Np-237 (b) 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
Np-239 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Os-185 Osmium (76) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Os-191 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Os-191m 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Os-193 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Os-194 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
P-32 Phosphorus (15) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 5 2.7 × 10−6
P-33 1.0 × 10 5 2.7 × 10−6 1.0 × 10 8 2.7 × 10−3
Pa-230 Protactinium (91) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Pa-231 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
Pa-233 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Pb-201 Lead (82) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Pb-202 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Pb-203 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Pb-205 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
Pb-210 (b) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Pb-212 (b) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Pd-103 Palladium (46) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 8 2.7 × 10−3
Pd-107 1.0 × 10 5 2.7 × 10−6 1.0 × 10 8 2.7 × 10−3
Pd-109 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Pm-143 Promethium (61) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Pm-144 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Pm-145 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Pm-147 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
Pm-148m 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Pm-149 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Pm-151 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Po-210 Polonium (84) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Pr-142 Praseodymium (59) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Pr-143 1.0 × 10 4 2.7 × 10−7 1.0 × 10 6 2.7 × 10−5
Pt-188 Platinum (78) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Pt-191 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Pt-193 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
Pt-193m 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Pt-195m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Pt-197 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Pt-197m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Pu-236 Plutonium (94) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Pu-237 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Pu-238 1.0 2.7 × 10−11 1.0 × 10 4 2.7 × 10−7
Pu-239 1.0 2.7 × 10−11 1.0 × 10 4 2.7 × 10−7
Pu-240 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
Pu-241 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Pu-242 1.0 2.7 × 10−11 1.0 × 10 4 2.7 × 10−7
Pu-244 1.0 2.7 × 10−11 1.0 × 10 4 2.7 × 10−7
Ra-223 (b) Radium (88) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Ra-224 (b) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Ra-225 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Ra-226 (b) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Ra-228 (b) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Rb-81 Rubidium (37) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Rb-83 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Rb-84 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Rb-86 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Rb-87 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
Rb(nat) 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
Re-184 Rhenium (75) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Re-184m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Re-186 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Re-187 1.0 × 10 6 2.7 × 10−5 1.0 × 10 9 2.7 × 10−2
Re-188 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Re-189 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Re(nat) 1.0 × 10 6 2.7 × 10−5 1.0 × 10 9 2.7 × 10−2
Rh-99 Rhodium (45) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Rh-101 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Rh-102 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Rh-102m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Rh-103m 1.0 × 10 4 2.7 × 10−7 1.0 × 10 8 2.7 × 10−3
Rh-105 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Rn-222 (b) Radon (86) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 8 2.7 × 10−3
Ru-97 Ruthenium (44) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Ru-103 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Ru-105 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Ru-106 (b) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
S-35 Sulphur (16) 1.0 × 10 5 2.7 × 10−6 1.0 × 10 8 2.7 × 10−3
Sb-122 Antimony (51) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 4 2.7 × 10−7
Sb-124 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Sb-125 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Sb-126 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Sc-44 Scandium (21) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Sc-46 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Sc-47 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Sc-48 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Se-75 Selenium (34) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Se-79 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
Si-31 Silicon (14) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Si-32 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Sm-145 Samarium (62) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Sm-147 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Sm-151 1.0 × 10 4 2.7 × 10−7 1.0 × 10 8 2.7 × 10−3
Sm-153 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Sn-113 Tin (50) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Sn-117m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Sn-119m 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Sn-121m 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Sn-123 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Sn-125 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Sn-126 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Sr-82 Strontium (38) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Sr-85 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Sr-85m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Sr-87m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Sr-89 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Sr-90 (b) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 4 2.7 × 10−7
Sr-91 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Sr-92 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
T(H-3) Tritium (1) 1.0 × 10 6 2.7 × 10−5 1.0 × 10 9 2.7 × 10−2
Ta-178 (long-lived) Tantalum (73) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Ta-179 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Ta-182 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Tb-157 Terbium (65) 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
Tb-158 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Tb-160 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Tc-95m Technetium (43) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Tc-96 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Tc-96m 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Tc-97 1.0 × 10 3 2.7 × 10−8 1.0 × 10 8 2.7 × 10−3
Tc-97m 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Tc-98 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Tc-99 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
Tc-99m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Te-121 Tellurium (52) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Te-121m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Te-123m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Te-125m 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Te-127 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Te-127m 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Te-129 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Te-129m 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Te-131m 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Te-132 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Th-227 Thorium (90) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Th-228 (b) 1.0 2.7 × 10−11 1.0 × 10 4 2.7 × 10−7
Th-229 (b) 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
Th-230 1.0 2.7 × 10−11 1.0 × 10 4 2.7 × 10−7
Th-231 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Th-232 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
Th-234 (b) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 5 2.7 × 10−6
Th (nat) (b) 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
Ti-44 Titanium (22) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
Tl-200 Thallium (81) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Tl-201 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Tl-202 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Tl-204 1.0 × 10 4 2.7 × 10−7 1.0 × 10 4 2.7 × 10−7
Tm-167 Thulium (69) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Tm-170 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Tm-171 1.0 × 10 4 2.7 × 10−7 1.0 × 10 8 2.7 × 10−3
U-230 (fast lung absorption) (b),(d) Uranium (92) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
U-230 (medium lung absorption) (e) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
U-230 (slow lung absorption) (f) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
U-232 (fast lung absorption) (b),(d) 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
U-232 (medium lung absorption) (e) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
U-232 (slow lung absorption) (f) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
U-233 (fast lung absorption) (d) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
U-233 (medium lung absorption) (e) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
U-233 (slow lung absorption) (f) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
U-234 (fast lung absorption) (d) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
U-234 (medium lung absorption) (e) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
U-234 (slow lung absorption) (f) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
U-235 (all lung absorption types) (b),(d),(e),(f) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
U-236 (fast lung absorption) (d) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
U-236 (medium lung absorption) (e) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
U-236 (slow lung absorption) (f) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
U-238 (all lung absorption types) (b),(d),(e),(f) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 4 2.7 × 10−7
U (nat) (b) 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
U (enriched to 20% or less)(g) 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
U (dep) 1.0 2.7 × 10−11 1.0 × 10 3 2.7 × 10−8
V-48 Vanadium (23) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6
V-49 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
W-178 Tungsten (74) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
W-181 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
W-185 1.0 × 10 4 2.7 × 10−7 1.0 × 10 7 2.7 × 10−4
W-187 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
W-188 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Xe-122 Xenon (54) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 9 2.7 × 10−2
Xe-123 1.0 × 10 2 2.7 × 10−9 1.0 × 10 9 2.7 × 10−2
Xe-127 1.0 × 10 3 2.7 × 10−8 1.0 × 10 5 2.7 × 10−6
Xe-131m 1.0 × 10 4 2.7 × 10−7 1.0 × 10 4 2.7 × 10−7
Xe-133 1.0 × 10 3 2.7 × 10−8 1.0 × 10 4 2.7 × 10−7
Xe-135 1.0 × 10 3 2.7 × 10−8 1.0 × 10 10 2.7 × 10−1
Y-87 Yttrium (39) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Y-88 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Y-90 1.0 × 10 3 2.7 × 10−8 1.0 × 10 5 2.7 × 10−6
Y-91 1.0 × 10 3 2.7 × 10−8 1.0 × 10 6 2.7 × 10−5
Y-91m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Y-92 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Y-93 1.0 × 10 2 2.7 × 10−9 1.0 × 10 5 2.7 × 10−6
Yb-169 Ytterbium (70) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 7 2.7 × 10−4
Yb-175 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Zn-65 Zinc (30) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Zn-69 1.0 × 10 4 2.7 × 10−7 1.0 × 10 6 2.7 × 10−5
Zn-69m 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Zr-88 Zirconium (40) 1.0 × 10 2 2.7 × 10−9 1.0 × 10 6 2.7 × 10−5
Zr-93 (b) 1.0 × 10 3 2.7 × 10−8 1.0 × 10 7 2.7 × 10−4
Zr-95 1.0 × 10 1 2.7 × 10−10 1.0 × 10 6 2.7 × 10−5
Zr-97 (b) 1.0 × 10 1 2.7 × 10−10 1.0 × 10 5 2.7 × 10−6

a [Reserved]

b Parent nuclides and their progeny included in secular equilibrium are listed as follows:

Sr-90 Y-90

Zr-93 Nb-93m

Zr-97 Nb-97

Ru-106 Rh-106

Ag-108m Ag-108

Cs-137 Ba-137m

Ce-144 Pr-144

Ba-140 La-140

Bi-212 Tl-208 (0.36), Po-212 (0.64)

Pb-210 Bi-210, Po-210

Pb-212 Bi-212, Tl-208 (0.36), Po-212 (0.64)

Rn-222 Po-218, Pb-214, Bi-214, Po-214

Ra-223 Rn-219, Po-215, Pb-211, Bi-211, Tl-207

Ra-224 Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36), Po-212 (0.64),

Ra-226 Rn-222, Po-218, Pb-214, Bi-214, Po-214, Pb-210, Bi-210, Po-210

Ra-228 Ac-228

Th-228 Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36), Po-212 (0.64)

Th-229 Ra-225, Ac-225, Fr-221, At-217, Bi-213, Po-213, Pb-209

Th-nat Ra-228, Ac-228, Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36), Po-212 (0.64)

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 (0.36), Po-212 (0.64)

U-235 Th-231

U-238 Th-234, Pa-234m

U-nat Th-234, Pa-234m, U-234, Th-230, Ra-226, Rn-222, Po-218, Pb-214, Bi-214, Po-214, Pb-210, Bi-210, Po-210

Np-237 Pa-233

Am-242m Am-242

Am-243 Np-239

c [Reserved]

d These values apply only to compounds of uranium that take the chemical form of UF6, UO2F2 and UO2(NO3)2 in both normal and accident conditions of transport.

e These values apply only to compounds of uranium that take the chemical form of UO3, UF4, UCl4 and hexavalent compounds in both normal and accident conditions of transport.

f These values apply to all compounds of uranium other than those specified in notes (d) and (e) of this table.

g These values apply to unirradiated uranium only.

[69 FR 3685, Jan. 26, 2004, as amended at 79 FR 40615, July 11, 2014; 80 FR 72928, Nov. 23, 2015]