Regulations last checked for updates: Oct 31, 2024

Title 49 - Transportation last revised: Oct 28, 2024
All TitlesTitle 49Chapter IPart 173Subpart I - Subpart I—Class 7 (Radioactive) Materials
View all text of Subpart I [§ 173.401 - § 173.477]
§ 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-225Actinium (89)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Ac-227 1.0 × 10−12.7 × 10−121.0 × 10 32.7 × 10−8
Ac-228 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Ag-105Silver (47)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Ag-108m (b) 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Ag-110m 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Ag-111 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Al-26Aluminum (13)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Am-241Americium (95)1.02.7 × 10−111.0 × 10 42.7 × 10−7
Am-242m (b) 1.02.7 × 10−111.0 × 10 42.7 × 10−7
Am-243 (b) 1.02.7 × 10−111.0 × 10 32.7 × 10−8
Ar-37Argon (18)1.0 × 10 62.7 × 10−51.0 × 10 82.7 × 10−3
Ar-39 1.0 × 10 72.7 × 10−41.0 × 10 42.7 × 10−7
Ar-41 1.0 × 10 22.7 × 10−91.0 × 10 92.7 × 10−2
As-72Arsenic (33)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
As-73 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
As-74 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
As-76 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
As-77 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
At-211Astatine (85)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Au-193Gold (79)1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Au-194 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Au-195 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Au-198 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Au-199 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Ba-131Barium (56)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Ba-133 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Ba-133m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Ba-140 (b) 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Be-7Beryllium (4)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Be-10 1.0 × 10 42.7 × 10−71.0 × 10 62.7 × 10−5
Bi-205Bismuth (83)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Bi-206 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Bi-207 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Bi-210 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Bi-210m 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Bi-212 (b) 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Bk-247Berkelium (97)1.02.7 × 10−111.0 × 10 42.7 × 10−7
Bk-249 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Br-76Bromine (35)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Br-77 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Br-82 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
C-11Carbon (6)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
C-14 1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
Ca-41Calcium (20)1.0 × 10 52.7 × 10−61.0 × 10 72.7 × 10−4
Ca-45 1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
Ca-47 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Cd-109Cadmium (48)1.0 × 10 42.7 × 10−71.0 × 10 62.7 × 10−5
Cd-113m 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Cd-115 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Cd-115m 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Ce-139Cerium (58)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Ce-141 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Ce-143 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Ce-144 (b) 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Cf-248Californium (98)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Cf-249 1.02.7 × 10−111.0 × 10 32.7 × 10−8
Cf-250 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Cf-251 1.02.7 × 10−111.0 × 10 32.7 × 10−8
Cf-252 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Cf-253 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Cf-254 1.02.7 × 10−111.0 × 10 32.7 × 10−8
Cl-36Chlorine (17)1.0 × 10 42.7 × 10−71.0 × 10 62.7 × 10−5
Cl-38 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Cm-240Curium (96)1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Cm-241 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Cm-242 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Cm-243 1.02.7 × 10−111.0 × 10 42.7 × 10−7
Cm-244 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Cm-245 1.02.7 × 10−111.0 × 10 32.7 × 10−8
Cm-246 1.02.7 × 10−111.0 × 10 32.7 × 10−8
Cm-247 1.02.7 × 10−111.0 × 10 42.7 × 10−7
Cm-248 1.02.7 × 10−111.0 × 10 32.7 × 10−8
Co-55Cobalt (27)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Co-56 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Co-57 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Co-58 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Co-58m 1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
Co-60 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Cr-51Chromium (24)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Cs-129Cesium (55)1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Cs-131 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Cs-132 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Cs-134 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Cs-134m 1.0 × 10 32.7 × 10−81.0 × 10 52.7 × 10−6
Cs-135 1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
Cs-136 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Cs-137 (b) 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Cu-64Copper (29)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Cu-67 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Dy-159Dysprosium (66)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Dy-165 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Dy-166 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Er-169Erbium (68)1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
Er-171 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Eu-147Europium (63)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Eu-148 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Eu-149 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Eu-150 (short lived) 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Eu-150 (long lived) 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Eu-152 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Eu-152m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Eu-154 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Eu-155 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Eu-156 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
F-18Fluorine (9)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Fe-52Iron (26)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Fe-55 1.0 × 10 42.7 × 10−71.0 × 10 62.7 × 10−5
Fe-59 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Fe-60 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Ga-67Gallium (31)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Ga-68 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Ga-72 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Gd-146Gadolinium (64)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Gd-148 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Gd-153 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Gd-159 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Ge-68Germanium (32)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Ge-71 1.0 × 10 42.7 × 10−71.0 × 10 82.7 × 10−3
Ge-77 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Hf-172Hafnium (72)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Hf-175 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Hf-181 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Hf-182 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Hg-194Mercury (80)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Hg-195m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Hg-197 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Hg-197m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Hg-203 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Ho-166Holmium (67)1.0 × 10 32.7 × 10−81.0 × 10 52.7 × 10−6
Ho-166m 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
I-123Iodine (53)1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
I-124 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
I-125 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
I-126 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
I-129 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
I-131 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
I-132 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
I-133 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
I-134 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
I-135 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
In-111Indium (49)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
In-113m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
In-114m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
In-115m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Ir-189Iridium (77)1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Ir-190 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Ir-192 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Ir-194 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
K-40Potassium (19)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
K-42 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
K-43 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Kr-79Krypton (36)1.0 × 10 32.7 × 10−81.0 × 10 52.7 × 10−6
Kr-81Krypton (36)1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
Kr-85 1.0 × 10 52.7 × 10−61.0 × 10 42.7 × 10−7
Kr-85m 1.0 × 10 32.7 × 10−81.0 × 10 102.7 × 10−1
Kr-87 1.0 × 10 22.7 × 10−91.0 × 10 92.7 × 10−2
La-137Lanthanum (57)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
La-140 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Lu-172Lutetium (71)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Lu-173 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Lu-174 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Lu-174m 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Lu-177 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Mg-28Magnesium (12)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Mn-52Manganese (25)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Mn-53 1.0 × 10 42.7 × 10−71.0 × 10 92.7 × 10−2
Mn-54 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Mn-56 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Mo-93Molybdenum (42)1.0 × 10 32.7 × 10−81.0 × 10 82.7 × 10−3
Mo-99 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
N-13Nitrogen (7)1.0 × 10 22.7 × 10−91.0 × 10 92.7 × 10−2
Na-22Sodium (11)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Na-24 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Nb-93mNiobium (41)1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
Nb-94 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Nb-95 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Nb-97 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Nd-147Neodymium (60)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Nd-149 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Ni-59Nickel (28)1.0 × 10 42.7 × 10−71.0 × 10 82.7 × 10−3
Ni-63 1.0 × 10 52.7 × 10−61.0 × 10 82.7 × 10−3
Ni-65 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Np-235Neptunium (93)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Np-236 (short-lived) 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Np-236 (long-lived) 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Np-237 (b) 1.02.7 × 10−111.0 × 10 32.7 × 10−8
Np-239 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Os-185Osmium (76)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Os-191 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Os-191m 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Os-193 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Os-194 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
P-32Phosphorus (15)1.0 × 10 32.7 × 10−81.0 × 10 52.7 × 10−6
P-33 1.0 × 10 52.7 × 10−61.0 × 10 82.7 × 10−3
Pa-230Protactinium (91)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Pa-231 1.02.7 × 10−111.0 × 10 32.7 × 10−8
Pa-233 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Pb-201Lead (82)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Pb-202 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Pb-203 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Pb-205 1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
Pb-210 (b) 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Pb-212 (b) 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Pd-103Palladium (46)1.0 × 10 32.7 × 10−81.0 × 10 82.7 × 10−3
Pd-107 1.0 × 10 52.7 × 10−61.0 × 10 82.7 × 10−3
Pd-109 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Pm-143Promethium (61)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Pm-144 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Pm-145 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Pm-147 1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
Pm-148m 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Pm-149 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Pm-151 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Po-210Polonium (84)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Pr-142Praseodymium (59)1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Pr-143 1.0 × 10 42.7 × 10−71.0 × 10 62.7 × 10−5
Pt-188Platinum (78)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Pt-191 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Pt-193 1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
Pt-193m 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Pt-195m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Pt-197 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Pt-197m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Pu-236Plutonium (94)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Pu-237 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Pu-238 1.02.7 × 10−111.0 × 10 42.7 × 10−7
Pu-239 1.02.7 × 10−111.0 × 10 42.7 × 10−7
Pu-240 1.02.7 × 10−111.0 × 10 32.7 × 10−8
Pu-241 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Pu-242 1.02.7 × 10−111.0 × 10 42.7 × 10−7
Pu-244 1.02.7 × 10−111.0 × 10 42.7 × 10−7
Ra-223 (b)Radium (88)1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Ra-224 (b) 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Ra-225 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Ra-226 (b) 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Ra-228 (b) 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Rb-81Rubidium (37)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Rb-83 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Rb-84 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Rb-86 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Rb-87 1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
Rb(nat) 1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
Re-184Rhenium (75)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Re-184m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Re-186 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Re-187 1.0 × 10 62.7 × 10−51.0 × 10 92.7 × 10−2
Re-188 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Re-189 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Re(nat) 1.0 × 10 62.7 × 10−51.0 × 10 92.7 × 10−2
Rh-99Rhodium (45)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Rh-101 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Rh-102 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Rh-102m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Rh-103m 1.0 × 10 42.7 × 10−71.0 × 10 82.7 × 10−3
Rh-105 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Rn-222 (b)Radon (86)1.0 × 10 12.7 × 10−101.0 × 10 82.7 × 10−3
Ru-97Ruthenium (44)1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Ru-103 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Ru-105 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Ru-106 (b) 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
S-35Sulphur (16)1.0 × 10 52.7 × 10−61.0 × 10 82.7 × 10−3
Sb-122Antimony (51)1.0 × 10 22.7 × 10−91.0 × 10 42.7 × 10−7
Sb-124 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Sb-125 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Sb-126 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Sc-44Scandium (21)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Sc-46 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Sc-47 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Sc-48 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Se-75Selenium (34)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Se-79 1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
Si-31Silicon (14)1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Si-32 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Sm-145Samarium (62)1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Sm-147 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Sm-151 1.0 × 10 42.7 × 10−71.0 × 10 82.7 × 10−3
Sm-153 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Sn-113Tin (50)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Sn-117m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Sn-119m 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Sn-121m 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Sn-123 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Sn-125 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Sn-126 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Sr-82Strontium (38)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Sr-85 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Sr-85m 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Sr-87m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Sr-89 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Sr-90 (b) 1.0 × 10 22.7 × 10−91.0 × 10 42.7 × 10−7
Sr-91 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Sr-92 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
T(H-3)Tritium (1)1.0 × 10 62.7 × 10−51.0 × 10 92.7 × 10−2
Ta-178 (long-lived)Tantalum (73)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Ta-179 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Ta-182 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Tb-157Terbium (65)1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
Tb-158 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Tb-160 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Tc-95mTechnetium (43)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Tc-96 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Tc-96m 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Tc-97 1.0 × 10 32.7 × 10−81.0 × 10 82.7 × 10−3
Tc-97m 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Tc-98 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Tc-99 1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
Tc-99m 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Te-121Tellurium (52)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Te-121m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Te-123m 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Te-125m 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Te-127 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Te-127m 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Te-129 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Te-129m 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Te-131m 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Te-132 1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Th-227Thorium (90)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Th-228 (b) 1.02.7 × 10−111.0 × 10 42.7 × 10−7
Th-229 (b) 1.02.7 × 10−111.0 × 10 32.7 × 10−8
Th-230 1.02.7 × 10−111.0 × 10 42.7 × 10−7
Th-231 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Th-232 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
Th-234 (b) 1.0 × 10 32.7 × 10−81.0 × 10 52.7 × 10−6
Th (nat) (b) 1.02.7 × 10−111.0 × 10 32.7 × 10−8
Ti-44Titanium (22)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
Tl-200Thallium (81)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Tl-201 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Tl-202 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Tl-204 1.0 × 10 42.7 × 10−71.0 × 10 42.7 × 10−7
Tm-167Thulium (69)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Tm-170 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Tm-171 1.0 × 10 42.7 × 10−71.0 × 10 82.7 × 10−3
U-230 (fast lung absorption) (b),(d)Uranium (92)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
U-230 (medium lung absorption) (e) 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
U-230 (slow lung absorption) (f) 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
U-232 (fast lung absorption) (b),(d) 1.02.7 × 10−111.0 × 10 32.7 × 10−8
U-232 (medium lung absorption) (e) 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
U-232 (slow lung absorption) (f) 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
U-233 (fast lung absorption) (d) 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
U-233 (medium lung absorption) (e) 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
U-233 (slow lung absorption) (f) 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
U-234 (fast lung absorption) (d) 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
U-234 (medium lung absorption) (e) 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
U-234 (slow lung absorption) (f) 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
U-235 (all lung absorption types) (b),(d),(e),(f) 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
U-236 (fast lung absorption) (d) 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
U-236 (medium lung absorption) (e) 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
U-236 (slow lung absorption) (f) 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
U-238 (all lung absorption types) (b),(d),(e),(f) 1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7
U (nat) (b) 1.02.7 × 10−111.0 × 10 32.7 × 10−8
U (enriched to 20% or less)(g) 1.02.7 × 10−111.0 × 10 32.7 × 10−8
U (dep) 1.02.7 × 10−111.0 × 10 32.7 × 10−8
V-48Vanadium (23)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6
V-49 1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
W-178Tungsten (74)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
W-181 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
W-185 1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4
W-187 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
W-188 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Xe-122Xenon (54)1.0 × 10 22.7 × 10−91.0 × 10 92.7 × 10−2
Xe-123 1.0 × 10 22.7 × 10−91.0 × 10 92.7 × 10−2
Xe-127 1.0 × 10 32.7 × 10−81.0 × 10 52.7 × 10−6
Xe-131m 1.0 × 10 42.7 × 10−71.0 × 10 42.7 × 10−7
Xe-133 1.0 × 10 32.7 × 10−81.0 × 10 42.7 × 10−7
Xe-135 1.0 × 10 32.7 × 10−81.0 × 10 102.7 × 10−1
Y-87Yttrium (39)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Y-88 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Y-90 1.0 × 10 32.7 × 10−81.0 × 10 52.7 × 10−6
Y-91 1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5
Y-91m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Y-92 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Y-93 1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6
Yb-169Ytterbium (70)1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4
Yb-175 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Zn-65Zinc (30)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Zn-69 1.0 × 10 42.7 × 10−71.0 × 10 62.7 × 10−5
Zn-69m 1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Zr-88Zirconium (40)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5
Zr-93 (b) 1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4
Zr-95 1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5
Zr-97 (b) 1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 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]
authority: 49 U.S.C. 5101-5128,44701; 49 CFR 1.81, 1.96 and 1.97
cite as: 49 CFR 173.436
© 2014 CustomsMobile | Disclaimer | Privacy | About