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 × 10−7Ac-2271.0 × 10−12.7 × 10−121.0 × 10 32.7 × 10−8Ac-2281.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Ag-105Silver (47)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Ag-108m (b)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Ag-110m1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Ag-1111.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Al-26Aluminum (13)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Am-241Americium (95)1.02.7 × 10−111.0 × 10 42.7 × 10−7Am-242m (b)1.02.7 × 10−111.0 × 10 42.7 × 10−7Am-243 (b)1.02.7 × 10−111.0 × 10 32.7 × 10−8Ar-37Argon (18)1.0 × 10 62.7 × 10−51.0 × 10 82.7 × 10−3Ar-391.0 × 10 72.7 × 10−41.0 × 10 42.7 × 10−7Ar-411.0 × 10 22.7 × 10−91.0 × 10 92.7 × 10−2As-72Arsenic (33)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6As-731.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4As-741.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5As-761.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6As-771.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5At-211Astatine (85)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Au-193Gold (79)1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Au-1941.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Au-1951.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Au-1981.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Au-1991.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Ba-131Barium (56)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Ba-1331.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Ba-133m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Ba-140 (b)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Be-7Beryllium (4)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Be-101.0 × 10 42.7 × 10−71.0 × 10 62.7 × 10−5Bi-205Bismuth (83)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Bi-2061.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Bi-2071.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Bi-2101.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Bi-210m1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Bi-212 (b)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Bk-247Berkelium (97)1.02.7 × 10−111.0 × 10 42.7 × 10−7Bk-2491.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Br-76Bromine (35)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Br-771.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Br-821.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5C-11Carbon (6)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5C-141.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4Ca-41Calcium (20)1.0 × 10 52.7 × 10−61.0 × 10 72.7 × 10−4Ca-451.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4Ca-471.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Cd-109Cadmium (48)1.0 × 10 42.7 × 10−71.0 × 10 62.7 × 10−5Cd-113m1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Cd-1151.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Cd-115m1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Ce-139Cerium (58)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Ce-1411.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Ce-1431.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Ce-144 (b)1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Cf-248Californium (98)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Cf-2491.02.7 × 10−111.0 × 10 32.7 × 10−8Cf-2501.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Cf-2511.02.7 × 10−111.0 × 10 32.7 × 10−8Cf-2521.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Cf-2531.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Cf-2541.02.7 × 10−111.0 × 10 32.7 × 10−8Cl-36Chlorine (17)1.0 × 10 42.7 × 10−71.0 × 10 62.7 × 10−5Cl-381.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Cm-240Curium (96)1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Cm-2411.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Cm-2421.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Cm-2431.02.7 × 10−111.0 × 10 42.7 × 10−7Cm-2441.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Cm-2451.02.7 × 10−111.0 × 10 32.7 × 10−8Cm-2461.02.7 × 10−111.0 × 10 32.7 × 10−8Cm-2471.02.7 × 10−111.0 × 10 42.7 × 10−7Cm-2481.02.7 × 10−111.0 × 10 32.7 × 10−8Co-55Cobalt (27)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Co-561.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Co-571.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Co-581.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Co-58m1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4Co-601.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Cr-51Chromium (24)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Cs-129Cesium (55)1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Cs-1311.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Cs-1321.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Cs-1341.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Cs-134m1.0 × 10 32.7 × 10−81.0 × 10 52.7 × 10−6Cs-1351.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4Cs-1361.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Cs-137 (b)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Cu-64Copper (29)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Cu-671.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Dy-159Dysprosium (66)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Dy-1651.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Dy-1661.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Er-169Erbium (68)1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4Er-1711.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Eu-147Europium (63)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Eu-1481.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Eu-1491.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Eu-150 (short lived)1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Eu-150 (long lived)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Eu-1521.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Eu-152m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Eu-1541.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Eu-1551.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Eu-1561.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5F-18Fluorine (9)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Fe-52Iron (26)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Fe-551.0 × 10 42.7 × 10−71.0 × 10 62.7 × 10−5Fe-591.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Fe-601.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Ga-67Gallium (31)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Ga-681.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Ga-721.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Gd-146Gadolinium (64)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Gd-1481.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Gd-1531.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Gd-1591.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Ge-68Germanium (32)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Ge-711.0 × 10 42.7 × 10−71.0 × 10 82.7 × 10−3Ge-771.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Hf-172Hafnium (72)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Hf-1751.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Hf-1811.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Hf-1821.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Hg-194Mercury (80)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Hg-195m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Hg-1971.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Hg-197m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Hg-2031.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Ho-166Holmium (67)1.0 × 10 32.7 × 10−81.0 × 10 52.7 × 10−6Ho-166m1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5I-123Iodine (53)1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4I-1241.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5I-1251.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5I-1261.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5I-1291.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6I-1311.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5I-1321.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6I-1331.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5I-1341.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6I-1351.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5In-111Indium (49)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5In-113m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5In-114m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5In-115m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Ir-189Iridium (77)1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Ir-1901.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Ir-1921.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Ir-1941.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6K-40Potassium (19)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5K-421.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5K-431.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Kr-79Krypton (36)1.0 × 10 32.7 × 10−81.0 × 10 52.7 × 10−6Kr-81Krypton (36)1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4Kr-851.0 × 10 52.7 × 10−61.0 × 10 42.7 × 10−7Kr-85m1.0 × 10 32.7 × 10−81.0 × 10 102.7 × 10−1Kr-871.0 × 10 22.7 × 10−91.0 × 10 92.7 × 10−2La-137Lanthanum (57)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4La-1401.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Lu-172Lutetium (71)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Lu-1731.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Lu-1741.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Lu-174m1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Lu-1771.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Mg-28Magnesium (12)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Mn-52Manganese (25)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Mn-531.0 × 10 42.7 × 10−71.0 × 10 92.7 × 10−2Mn-541.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Mn-561.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Mo-93Molybdenum (42)1.0 × 10 32.7 × 10−81.0 × 10 82.7 × 10−3Mo-991.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5N-13Nitrogen (7)1.0 × 10 22.7 × 10−91.0 × 10 92.7 × 10−2Na-22Sodium (11)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Na-241.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Nb-93mNiobium (41)1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4Nb-941.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Nb-951.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Nb-971.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Nd-147Neodymium (60)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Nd-1491.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Ni-59Nickel (28)1.0 × 10 42.7 × 10−71.0 × 10 82.7 × 10−3Ni-631.0 × 10 52.7 × 10−61.0 × 10 82.7 × 10−3Ni-651.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Np-235Neptunium (93)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Np-236 (short-lived)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Np-236 (long-lived)1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Np-237 (b)1.02.7 × 10−111.0 × 10 32.7 × 10−8Np-2391.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Os-185Osmium (76)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Os-1911.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Os-191m1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Os-1931.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Os-1941.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6P-32Phosphorus (15)1.0 × 10 32.7 × 10−81.0 × 10 52.7 × 10−6P-331.0 × 10 52.7 × 10−61.0 × 10 82.7 × 10−3Pa-230Protactinium (91)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Pa-2311.02.7 × 10−111.0 × 10 32.7 × 10−8Pa-2331.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Pb-201Lead (82)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Pb-2021.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Pb-2031.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Pb-2051.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4Pb-210 (b)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Pb-212 (b)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Pd-103Palladium (46)1.0 × 10 32.7 × 10−81.0 × 10 82.7 × 10−3Pd-1071.0 × 10 52.7 × 10−61.0 × 10 82.7 × 10−3Pd-1091.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Pm-143Promethium (61)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Pm-1441.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Pm-1451.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Pm-1471.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4Pm-148m1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Pm-1491.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Pm-1511.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Po-210Polonium (84)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Pr-142Praseodymium (59)1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Pr-1431.0 × 10 42.7 × 10−71.0 × 10 62.7 × 10−5Pt-188Platinum (78)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Pt-1911.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Pt-1931.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4Pt-193m1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Pt-195m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Pt-1971.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Pt-197m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Pu-236Plutonium (94)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Pu-2371.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Pu-2381.02.7 × 10−111.0 × 10 42.7 × 10−7Pu-2391.02.7 × 10−111.0 × 10 42.7 × 10−7Pu-2401.02.7 × 10−111.0 × 10 32.7 × 10−8Pu-2411.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Pu-2421.02.7 × 10−111.0 × 10 42.7 × 10−7Pu-2441.02.7 × 10−111.0 × 10 42.7 × 10−7Ra-223 (b)Radium (88)1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Ra-224 (b)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Ra-2251.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Ra-226 (b)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Ra-228 (b)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Rb-81Rubidium (37)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Rb-831.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Rb-841.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Rb-861.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Rb-871.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4Rb(nat)1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4Re-184Rhenium (75)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Re-184m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Re-1861.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Re-1871.0 × 10 62.7 × 10−51.0 × 10 92.7 × 10−2Re-1881.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Re-1891.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Re(nat)1.0 × 10 62.7 × 10−51.0 × 10 92.7 × 10−2Rh-99Rhodium (45)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Rh-1011.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Rh-1021.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Rh-102m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Rh-103m1.0 × 10 42.7 × 10−71.0 × 10 82.7 × 10−3Rh-1051.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Rn-222 (b)Radon (86)1.0 × 10 12.7 × 10−101.0 × 10 82.7 × 10−3Ru-97Ruthenium (44)1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Ru-1031.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Ru-1051.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Ru-106 (b)1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6S-35Sulphur (16)1.0 × 10 52.7 × 10−61.0 × 10 82.7 × 10−3Sb-122Antimony (51)1.0 × 10 22.7 × 10−91.0 × 10 42.7 × 10−7Sb-1241.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Sb-1251.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Sb-1261.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Sc-44Scandium (21)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Sc-461.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Sc-471.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Sc-481.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Se-75Selenium (34)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Se-791.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4Si-31Silicon (14)1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Si-321.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Sm-145Samarium (62)1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Sm-1471.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Sm-1511.0 × 10 42.7 × 10−71.0 × 10 82.7 × 10−3Sm-1531.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Sn-113Tin (50)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Sn-117m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Sn-119m1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Sn-121m1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Sn-1231.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Sn-1251.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Sn-1261.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Sr-82Strontium (38)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Sr-851.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Sr-85m1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Sr-87m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Sr-891.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Sr-90 (b)1.0 × 10 22.7 × 10−91.0 × 10 42.7 × 10−7Sr-911.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Sr-921.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5T(H-3)Tritium (1)1.0 × 10 62.7 × 10−51.0 × 10 92.7 × 10−2Ta-178 (long-lived)Tantalum (73)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Ta-1791.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Ta-1821.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Tb-157Terbium (65)1.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4Tb-1581.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Tb-1601.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Tc-95mTechnetium (43)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Tc-961.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Tc-96m1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Tc-971.0 × 10 32.7 × 10−81.0 × 10 82.7 × 10−3Tc-97m1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Tc-981.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Tc-991.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4Tc-99m1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Te-121Tellurium (52)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Te-121m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Te-123m1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Te-125m1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Te-1271.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Te-127m1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Te-1291.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Te-129m1.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Te-131m1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Te-1321.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Th-227Thorium (90)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Th-228 (b)1.02.7 × 10−111.0 × 10 42.7 × 10−7Th-229 (b)1.02.7 × 10−111.0 × 10 32.7 × 10−8Th-2301.02.7 × 10−111.0 × 10 42.7 × 10−7Th-2311.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Th-2321.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7Th-234 (b)1.0 × 10 32.7 × 10−81.0 × 10 52.7 × 10−6Th (nat) (b)1.02.7 × 10−111.0 × 10 32.7 × 10−8Ti-44Titanium (22)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6Tl-200Thallium (81)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Tl-2011.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Tl-2021.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Tl-2041.0 × 10 42.7 × 10−71.0 × 10 42.7 × 10−7Tm-167Thulium (69)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Tm-1701.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Tm-1711.0 × 10 42.7 × 10−71.0 × 10 82.7 × 10−3U-230 (fast lung absorption) (b),(d)Uranium (92)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6U-230 (medium lung absorption) (e)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7U-230 (slow lung absorption) (f)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7U-232 (fast lung absorption) (b),(d)1.02.7 × 10−111.0 × 10 32.7 × 10−8U-232 (medium lung absorption) (e)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7U-232 (slow lung absorption) (f)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7U-233 (fast lung absorption) (d)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7U-233 (medium lung absorption) (e)1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6U-233 (slow lung absorption) (f)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6U-234 (fast lung absorption) (d)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7U-234 (medium lung absorption) (e)1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6U-234 (slow lung absorption) (f)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6U-235 (all lung absorption types) (b),(d),(e),(f)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7U-236 (fast lung absorption) (d)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7U-236 (medium lung absorption) (e)1.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6U-236 (slow lung absorption) (f)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7U-238 (all lung absorption types) (b),(d),(e),(f)1.0 × 10 12.7 × 10−101.0 × 10 42.7 × 10−7U (nat) (b)1.02.7 × 10−111.0 × 10 32.7 × 10−8U (enriched to 20% or less)(g)1.02.7 × 10−111.0 × 10 32.7 × 10−8U (dep)1.02.7 × 10−111.0 × 10 32.7 × 10−8V-48Vanadium (23)1.0 × 10 12.7 × 10−101.0 × 10 52.7 × 10−6V-491.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4W-178Tungsten (74)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5W-1811.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4W-1851.0 × 10 42.7 × 10−71.0 × 10 72.7 × 10−4W-1871.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5W-1881.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Xe-122Xenon (54)1.0 × 10 22.7 × 10−91.0 × 10 92.7 × 10−2Xe-1231.0 × 10 22.7 × 10−91.0 × 10 92.7 × 10−2Xe-1271.0 × 10 32.7 × 10−81.0 × 10 52.7 × 10−6Xe-131m1.0 × 10 42.7 × 10−71.0 × 10 42.7 × 10−7Xe-1331.0 × 10 32.7 × 10−81.0 × 10 42.7 × 10−7Xe-1351.0 × 10 32.7 × 10−81.0 × 10 102.7 × 10−1Y-87Yttrium (39)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Y-881.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Y-901.0 × 10 32.7 × 10−81.0 × 10 52.7 × 10−6Y-911.0 × 10 32.7 × 10−81.0 × 10 62.7 × 10−5Y-91m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Y-921.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Y-931.0 × 10 22.7 × 10−91.0 × 10 52.7 × 10−6Yb-169Ytterbium (70)1.0 × 10 22.7 × 10−91.0 × 10 72.7 × 10−4Yb-1751.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Zn-65Zinc (30)1.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Zn-691.0 × 10 42.7 × 10−71.0 × 10 62.7 × 10−5Zn-69m1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Zr-88Zirconium (40)1.0 × 10 22.7 × 10−91.0 × 10 62.7 × 10−5Zr-93 (b)1.0 × 10 32.7 × 10−81.0 × 10 72.7 × 10−4Zr-951.0 × 10 12.7 × 10−101.0 × 10 62.7 × 10−5Zr-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]