49 CFR 173.435 - Table of A1 and A2 values for radionuclides.

View all text of Subpart I [§ 173.401 - § 173.477]

§ 173.435 - Table of A1 and A2 values for radionuclides.

The table of A1 and A2 values for radionuclides is as follows:

Symbol of radionuclide	Element and atomic number	A1 (TBq)	A1 (Ci) b	A2 (TBq)	A2 (Ci) b	Specific activity		(TBq/g)	(Ci/g)	Ac-225 (a)	Actinium (89)	8.0 × 10−1	2.2 × 10 1	6.0 × 10−3	1.6 × 10−1	2.1 × 10 3	5.8 × 10 4	Ac-227 (a)		9.0 × 10−1	2.4 × 10 1	9.0 × 10−5	2.4 × 10−3	2.7	7.2 × 10 1	Ac-228		6.0 × 10−1	1.6 × 10 1	5.0 × 10−1	1.4 × 10 1	8.4 × 10 4	2.2 × 10 6	Ag-105	Silver (47)	2.0	5.4 × 10 1	2.0	5.4 × 10 1	1.1 × 10 3	3.0 × 10 4	Ag-108m (a)		7.0 × 10−1	1.9 × 10 1	7.0 × 10−1	1.9 × 10 1	9.7 × 10−1	2.6 × 10 1	Ag-110m (a)		4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	1.8 × 10 2	4.7 × 10 3	Ag-111		2.0	5.4 × 10 1	6.0 × 10−1	1.6 × 10 1	5.8 × 10 3	1.6 × 10 5	Al-26	Aluminum (13)	1.0 × 10−1	2.7	1.0 × 10−1	2.7	7.0 × 10−4	1.9 × 10−2	Am-241	Americium (95)	1.0 × 10 1	2.7 × 10 2	1.0 × 10−3	2.7 × 10−2	1.3 × 10−1	3.4	Am-242m (a)		1.0 × 10 1	2.7 × 10 2	1.0 × 10−3	2.7 × 10−2	3.6 × 10−1	1.0 × 10 1	Am-243 (a)		5.0	1.4 × 10 2	1.0 × 10−3	2.7 × 10−2	7.4 × 10−3	2.0 × 10−1	Ar-37	Argon (18)	4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	3.7 × 10 3	9.9 × 10 4	Ar-39		4.0 × 10 1	1.1 × 10 3	2.0 × 10 1	5.4 × 10 2	1.3	3.4 × 10 1	Ar-41		3.0 × 10−1	8.1	3.0 × 10−1	8.1	1.5 × 10 6	4.2 × 10 7	As-72	Arsenic (33)	3.0 × 10−1	8.1	3.0 × 10−1	8.1	6.2 × 10 4	1.7 × 10 6	As-73		4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	8.2 × 10 2	2.2 × 10 4	As-74		1.0	2.7 × 10 1	9.0 × 10−1	2.4 × 10 1	3.7 × 10 3	9.9 × 10 4	As-76		3.0 × 10−1	8.1	3.0 × 10−1	8.1	5.8 × 10 4	1.6 × 10 6	As-77		2.0 × 10 1	5.4 × 10 2	7.0 × 10−1	1.9 × 10 1	3.9 × 10 4	1.0 × 10 6	At-211 (a)	Astatine (85)	2.0 × 10 1	5.4 × 10 2	5.0 × 10−1	1.4 × 10 1	7.6 × 10 4	2.1 × 10 6	Au-193	Gold (79)	7.0	1.9 × 10 2	2.0	5.4 × 10 1	3.4 × 10 4	9.2 × 10 5	Au-194		1.0	2.7 × 10 1	1.0	2.7 × 10 1	1.5 × 10 4	4.1 × 10 5	Au-195		1.0 × 10 1	2.7 × 10 2	6.0	1.6 × 10 2	1.4 × 10 2	3.7 × 10 3	Au-198		1.0	2.7 × 10 1	6.0 × 10−1	1.6 × 10 1	9.0 × 10 3	2.4 × 10 5	Au-199		1.0 × 10 1	2.7 × 10 2	6.0 × 10−1	1.6 × 10 1	7.7 × 10 3	2.1 × 10 5	Ba-131 (a)	Barium (56)	2.0	5.4 × 10 1	2.0	5.4 × 10 1	3.1 × 10 3	8.4 × 10 4	Ba-133		3.0	8.1 × 10 1	3.0	8.1 × 10 1	9.4	2.6 × 10 2	Ba-133m		2.0 × 10 1	5.4 × 10 2	6.0 × 10−1	1.6 × 10 1	2.2 × 10 4	6.1 × 10 5	Ba-140 (a)		5.0 × 10−1	1.4 × 10 1	3.0 × 10−1	8.1	2.7 × 10 3	7.3 × 10 4	Be-7	Beryllium (4)	2.0 × 10 1	5.4 × 10 2	2.0 × 10 1	5.4 × 10 2	1.3 × 10 4	3.5 × 10 5	Be-10		4.0 × 10 1	1.1 × 10 3	6.0 × 10−1	1.6 × 10 1	8.3 × 10−4	2.2 × 10−2	Bi-205	Bismuth (83)	7.0 × 10−1	1.9 × 10 1	7.0 × 10−1	1.9 × 10 1	1.5 × 10 3	4.2 × 10 4	Bi-206		3.0 × 10−1	8.1	3.0 × 10−1	8.1	3.8 × 10 3	1.0 × 10 5	Bi-207		7.0 × 10−1	1.9 × 10 1	7.0 × 10−1	1.9 × 10 1	1.9	5.2 × 10 1	Bi-210		1.0	2.7 × 10 1	6.0 × 10−1	1.6 × 10 1	4.6 × 10 3	1.2 × 10 5	Bi-210m (a)		6.0 × 10−1	1.6 × 10 1	2.0 × 10−2	5.4 × 10−1	2.1 × 10−5	5.7 × 10−4	Bi-212 (a)		7.0 × 10−1	1.9 × 10 1	6.0 × 10−1	1.6 × 10 1	5.4 × 10 5	1.5 × 10 7	Bk-247	Berkelium (97)	8.0	2.2 × 10 2	8.0 × 10−4	2.2 × 10−2	3.8 × 10−2	1.0	Bk-249 (a)		4.0 × 10 1	1.1 × 10 3	3.0 × 10−1	8.1	6.1 × 10 1	1.6 × 10 3	Br-76	Bromine (35)	4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	9.4 × 10 4	2.5 × 10 6	Br-77		3.0	8.1 × 10 1	3.0	8.1 × 10 1	2.6 × 10 4	7.1 × 10 5	Br-82		4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	4.0 × 10 4	1.1 × 10 6	C-11	Carbon (6)	1.0	2.7 × 10 1	6.0 × 10−1	1.6 × 10 1	3.1 × 10 7	8.4 × 10 8	C-14		4.0 × 10 1	1.1 × 10 3	3.0	8.1 × 10 1	1.6 × 10−1	4.5	Ca-41	Calcium (20)	Unlimited	Unlimited	Unlimited	Unlimited	3.1 × 10−3	8.5 × 10−2	Ca-45		4.0 × 10 1	1.1 × 10 3	1.0	2.7 × 10 1	6.6 × 10 2	1.8 × 10 4	Ca-47 (a)		3.0	8.1 × 10 1	3.0 × 10−1	8.1	2.3 × 10 4	6.1 × 10 5	Cd-109	Cadmium (48)	3.0 × 10 1	8.1 × 10 2	2.0	5.4 × 10 1	9.6 × 10 1	2.6 × 10 3	Cd-113m		4.0 × 10 1	1.1 × 10 3	5.0 × 10−1	1.4 × 10 1	8.3	2.2 × 10 2	Cd-115 (a)		3.0	8.1 × 10 1	4.0 × 10−1	1.1 × 10 1	1.9 × 10 4	5.1 × 10 5	Cd-115m		5.0 × 10−1	1.4 × 10 1	5.0 × 10−1	1.4 × 10 1	9.4 × 10 2	2.5 × 10 4	Ce-139	Cerium (58)	7.0	1.9 × 10 2	2.0	5.4 × 10 1	2.5 × 10 2	6.8 × 10 3	Ce-141		2.0 × 10 1	5.4 × 10 2	6.0 × 10−1	1.6 × 10 1	1.1 × 10 3	2.8 × 10 4	Ce-143		9.0 × 10−1	2.4 × 10 1	6.0 × 10−1	1.6 × 10 1	2.5 × 10 4	6.6 × 10 5	Ce-144 (a)		2.0 × 10−1	5.4	2.0 × 10−1	5.4	1.2 × 10 2	3.2 × 10 3	Cf-248	Californium (98)	4.0 × 10 1	1.1 × 10 3	6.0 × 10−3	1.6 × 10−1	5.8 × 10 1	1.6 × 10 3	Cf-249		3.0	8.1 × 10 1	8.0 × 10−4	2.2 × 10−2	1.5 × 10−1	4.1	Cf-250		2.0 × 10 1	5.4 × 10 2	2.0 × 10−3	5.4 × 10−2	4.0	1.1 × 10 2	Cf-251		7.0	1.9 × 10 2	7.0 × 10−4	1.9 × 10−2	5.9 × 10−2	1.6	Cf-252		1 × 10−1	2.7	3.0 × 10−3	8.1 × 10−2	2.0 × 10 1	5.4 × 10 2	Cf-253 (a)		4.0 × 10 1	1.1 × 10 3	4.0 × 10−2	1.1	1.1 × 10 3	2.9 × 10 4	Cf-254		1.0 × 10−3	2.7 × 10−2	1.0 × 10−3	2.7 × 10−2	3.1 × 10 2	8.5 × 10 3	Cl-36	Chlorine (17)	1.0 × 10 1	2.7 × 10 2	6.0 × 10−1	1.6 × 10 1	1.2 × 10−3	3.3 × 10−2	Cl-38		2.0 × 10−1	5.4	2.0 × 10−1	5.4	4.9 × 10 6	1.3 × 10 8	Cm-240	Curium (96)	4.0 × 10 1	1.1 × 10 3	2.0 × 10−2	5.4 × 10−1	7.5 × 10 2	2.0 × 10 4	Cm-241		2.0	5.4 × 10 1	1.0	2.7 × 10 1	6.1 × 10 2	1.7 × 10 4	Cm-242		4.0 × 10 1	1.1 × 10 3	1.0 × 10−2	2.7 × 10−1	1.2 × 10 2	3.3 × 10 3	Cm-243		9.0	2.4 × 10 2	1.0 × 10−3	2.7 × 10−2	1.9	5.2 × 10 1	Cm-244		2.0 × 10 1	5.4 × 10 2	2.0 × 10−3	5.4 × 10−2	3.0	8.1 × 10 1	Cm-245		9.0	2.4 × 10 2	9.0 × 10−4	2.4 × 10−2	6.4 × 10−3	1.7 × 10−1	Cm-246		9.0	2.4 × 10 2	9.0 × 10−4	2.4 × 10−2	1.1 × 10−2	3.1 × 10−1	Cm-247 (a)		3.0	8.1 × 10 1	1.0 × 10−3	2.7 × 10−2	3.4 × 10−6	9.3 × 10−5	Cm-248		2.0 × 10−2	5.4 × 10−1	3.0 × 10−4	8.1 × 10−3	1.6 × 10−4	4.2 × 10−3	Co-55	Cobalt (27)	5.0 × 10−1	1.4 × 10 1	5.0 × 10−1	1.4 × 10 1	1.1 × 10 5	3.1 × 10 6	Co-56		3.0 × 10−1	8.1	3.0 × 10−1	8.1	1.1 × 10 3	3.0 × 10 4	Co-57		1.0 × 10 1	2.7 × 10 2	1.0 × 10 1	2.7 × 10 2	3.1 × 10 2	8.4 × 10 3	Co-58		1.0	2.7 × 10 1	1.0	2.7 × 10 1	1.2 × 10 3	3.2 × 10 4	Co-58m		4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	2.2 × 10 5	5.9 × 10 6	Co-60		4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	4.2 × 10 1	1.1 × 10 3	Cr-51	Chromium (24)	3.0 × 10 1	8.1 × 10 2	3.0 × 10 1	8.1 × 10 2	3.4 × 10 3	9.2 × 10 4	Cs-129	Cesium (55)	4.0	1.1 × 10 2	4.0	1.1 × 10 2	2.8 × 10 4	7.6 × 10 5	Cs-131		3.0 × 10 1	8.1 × 10 2	3.0 × 10 1	8.1 × 10 2	3.8 × 10 3	1.0 × 10 5	Cs-132		1.0	2.7 × 10 1	1.0	2.7 × 10 1	5.7 × 10 3	1.5 × 10 5	Cs-134		7.0 × 10−1	1.9 × 10 1	7.0 × 10−1	1.9 × 10 1	4.8 × 10 1	1.3 × 10 3	Cs-134m		4.0 × 10 1	1.1 × 10 3	6.0 × 10−1	1.6 × 10 1	3.0 × 10 5	8.0 × 10 6	Cs-135		4.0 × 10 1	1.1 × 10 3	1.0	2.7 × 10 1	4.3 × 10−5	1.2 × 10−3	Cs-136		5.0 × 10−1	1.4 × 10 1	5.0 × 10−1	1.4 × 10 1	2.7 × 10 3	7.3 × 10 4	Cs-137 (a)		2.0	5.4 × 10 1	6.0 × 10−1	1.6 × 10 1	3.2	8.7 × 10 1	Cu-64	Copper (29)	6.0	1.6 × 10 2	1.0	2.7 × 10 1	1.4 × 10 5	3.9 × 10 6	Cu-67		1.0 × 10 1	2.7 × 10 2	7.0 × 10−1	1.9 × 10 1	2.8 × 10 4	7.6 × 10 5	Dy-159	Dysprosium (66)	2.0 × 10 1	5.4 × 10 2	2.0 × 10 1	5.4 × 10 2	2.1 × 10 2	5.7 × 10 3	Dy-165		9.0 × 10−1	2.4 × 10 1	6.0 × 10−1	1.6 × 10 1	3.0 × 10 5	8.2 × 10 6	Dy-166 (a)		9.0 × 10−1	2.4 × 10 1	3.0 × 10−1	8.1	8.6 × 10 3	2.3 × 10 5	Er-169	Erbium (68)	4.0 × 10 1	1.1 × 10 3	1.0	2.7 × 10 1	3.1 × 10 3	8.3 × 10 4	Er-171		8.0 × 10−1	2.2 × 10 1	5.0 × 10−1	1.4 × 10 1	9.0 × 10 4	2.4 × 10 6	Eu-147	Europium (63)	2.0	5.4 × 10 1	2.0	5.4 × 10 1	1.4 × 10 3	3.7 × 10 4	Eu-148		5.0 × 10−1	1.4 × 10 1	5.0 × 10−1	1.4 × 10 1	6.0 × 10 2	1.6 × 10 4	Eu-149		2.0 × 10 1	5.4 × 10 2	2.0 × 10 1	5.4 × 10 2	3.5 × 10 2	9.4 × 10 3	Eu-150 (short lived)		2.0	5.4 × 10 1	7.0 × 10−1	1.9 × 10 1	6.1 × 10 4	1.6 × 10 6	Eu-150 (long lived)		7.0 × 10−1	1.9 × 10 1	7.0 × 10−1	1.9 × 10 1	6.1 × 10 4	1.6 × 10 6	Eu-152		1.0	2.7 × 10 1	1.0	2.7 × 10 1	6.5	1.8 × 10 2	Eu-152m		8.0 × 10−1	2.2 × 10 1	8.0 × 10−1	2.2 × 10 1	8.2 × 10 4	2.2 × 10 6	Eu-154		9.0 × 10−1	2.4 × 10 1	6.0 × 10−1	1.6 × 10 1	9.8	2.6 × 10 2	Eu-155		2.0 × 10 1	5.4 × 10 2	3.0	8.1 × 10 1	1.8 × 10 1	4.9 × 10 2	Eu-156		7.0 × 10−1	1.9 × 10 1	7.0 × 10−1	1.9 × 10 1	2.0 × 10 3	5.5 × 10 4	F-18	Fluorine (9)	1.0	2.7 × 10 1	6.0 × 10−1	1.6 × 10 1	3.5 × 10 6	9.5 × 10 7	Fe-52 (a)	Iron (26)	3.0 × 10−1	8.1	3.0 × 10−1	8.1	2.7 × 10 5	7.3 × 10 6	Fe-55		4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	8.8 × 10 1	2.4 × 10 3	Fe-59		9.0 × 10−1	2.4 × 10 1	9.0 × 10−1	2.4 × 10 1	1.8 × 10 3	5.0 × 10 4	Fe-60 (a)		4.0 × 10 1	1.1 × 10 3	2.0 × 10−1	5.4	7.4 × 10−4	2.0 × 10−2	Ga-67	Gallium (31)	7.0	1.9 × 10 2	3.0	8.1 × 10 1	2.2 × 10 4	6.0 × 10 5	Ga-68		5.0 × 10−1	1.4 × 10 1	5.0 × 10−1	1.4 × 10 1	1.5 × 10 6	4.1 × 10 7	Ga-72		4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	1.1 × 10 5	3.1 × 10 6	Gd-146 (a)	Gadolinium (64)	5.0 × 10−1	1.4 × 10 1	5.0 × 10−1	1.4 × 10 1	6.9 × 10 2	1.9 × 10 4	Gd-148		2.0 × 10 1	5.4 × 10 2	2.0 × 10−3	5.4 × 10−2	1.2	3.2 × 10 1	Gd-153		1.0 × 10 1	2.7 × 10 2	9.0	2.4 × 10 2	1.3 × 10 2	3.5 × 10 3	Gd-159		3.0	8.1 × 10 1	6.0 × 10−1	1.6 × 10 1	3.9 × 10 4	1.1 × 10 6	Ge-68 (a)	Germanium (32)	5.0 × 10−1	1.4 × 10 1	5.0 × 10−1	1.4 × 10 1	2.6 × 10 2	7.1 × 10 3	Ge-71		4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	5.8 × 10 3	1.6 × 10 5	Ge-77		3.0 × 10−1	8.1	3.0 × 10−1	8.1	1.3 × 10 5	3.6 × 10 6	Hf-172 (a)	Hafnium (72)	6.0 × 10−1	1.6 × 10 1	6.0 × 10−1	1.6 × 10 1	4.1 × 10 1	1.1 × 10 3	Hf-175		3.0	8.1 × 10 1	3.0	8.1 × 10 1	3.9 × 10 2	1.1 × 10 4	Hf-181		2.0	5.4 × 10 1	5.0 × 10−1	1.4 × 10 1	6.3 × 10 2	1.7 × 10 4	Hf-182		Unlimited	Unlimited	Unlimited	Unlimited	8.1 × 10−6	2.2 × 10−4	Hg-194 (a)	Mercury (80)	1.0	2.7 × 10 1	1.0	2.7 × 10 1	1.3 × 10−1	3.5	Hg-195m (a)		3.0	8.1 × 10 1	7.0 × 10−1	1.9 × 10 1	1.5 × 10 4	4.0 × 10 5	Hg-197		2.0 × 10 1	5.4 × 10 2	1.0 × 10 1	2.7 × 10 2	9.2 × 10 3	2.5 × 10 5	Hg-197m		1.0 × 10 1	2.7 × 10 2	4.0 × 10−1	1.1 × 10 1	2.5 × 10 4	6.7 × 10 5	Hg-203		5.0	1.4 × 10 2	1.0	2.7 × 10 1	5.1 × 10 2	1.4 × 10 4	Ho-166	Holmium (67)	4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	2.6 × 10 4	7.0 × 10 5	Ho-166m		6.0 × 10−1	1.6 × 10 1	5.0 × 10−1	1.4 × 10 1	6.6 × 10−2	1.8	I-123	Iodine (53)	6.0	1.6 × 10 2	3.0	8.1 × 10 1	7.1 × 10 4	1.9 × 10 6	I-124		1.0	2.7 × 10 1	1.0	2.7 × 10 1	9.3 × 10 3	2.5 × 10 5	I-125		2.0 × 10 1	5.4 × 10 2	3.0	8.1 × 10 1	6.4 × 10 2	1.7 × 10 4	I-126		2.0	5.4 × 10 1	1.0	2.7 × 10 1	2.9 × 10 3	8.0 × 10 4	I-129		Unlimited	Unlimited	Unlimited	Unlimited	6.5 × 10−6	1.8 × 10−4	I-131		3.0	8.1 × 10 1	7.0 × 10−1	1.9 × 10 1	4.6 × 10 3	1.2 × 10 5	I-132		4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	3.8 × 10 5	1.0 × 10 7	I-133		7.0 × 10−1	1.9 × 10 1	6.0 × 10−1	1.6 × 10 1	4.2 × 10 4	1.1 × 10 6	I-134		3.0 × 10−1	8.1	3.0 × 10−1	8.1	9.9 × 10 5	2.7 × 10 7	I-135 (a)		6.0 × 10−1	1.6 × 10 1	6.0 × 10−1	1.6 × 10 1	1.3 × 10 5	3.5 × 10 6	In-111	Indium (49)	3.0	8.1 × 10 1	3.0	8.1 × 10 1	1.5 × 10 4	4.2 × 10 5	In-113m		4.0	1.1 × 10 2	2.0	5.4 × 10 1	6.2 × 10 5	1.7 × 10 7	In-114m (a)		1.0 × 10 1	2.7 × 10 2	5.0 × 10−1	1.4 × 10 1	8.6 × 10 2	2.3 × 10 4	In-115m		7.0	1.9 × 10 2	1.0	2.7 × 10 1	2.2 × 10 5	6.1 × 10 6	Ir-189 (a)	Iridium (77)	1.0 × 10 1	2.7 × 10 2	1.0 × 10 1	2.7 × 10 2	1.9 × 10 3	5.2 × 10 4	Ir-190		7.0 × 10−1	1.9 × 10 1	7.0 × 10−1	1.9 × 10 1	2.3 × 10 3	6.2 × 10 4	Ir-192 (c)		1.0	2.7 × 10 1	6.0 × 10−1	1.6 × 10 1	3.4 × 10 2	9.2 × 10 3	Ir-194		3.0 × 10−1	8.1	3.0 × 10−1	8.1	3.1 × 10 4	8.4 × 10 5	K-40	Potassium (19)	9.0 × 10−1	2.4 × 10 1	9.0 × 10−1	2.4 × 10 1	2.4 × 10−7	6.4 × 10−6	K-42		2.0 × 10−1	5.4	2.0 × 10−1	5.4	2.2 × 10 5	6.0 × 10 6	K-43		7.0 × 10−1	1.9 × 10 1	6.0 × 10−1	1.6 × 10 1	1.2 × 10 5	3.3 × 10 6	Kr-79	Krypton (36)	4.0 × 10 0	1.1 × 10 2	2.0 × 10 0	5.4 × 10 1	4.2 × 10 4	1.1 × 10 6	Kr-81	Krypton (36)	4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	7.8 × 10−4	2.1 × 10−2	Kr-85		1.0 × 10 1	2.7 × 10 2	1.0 × 10 1	2.7 × 10 2	1.5 × 10 1	3.9 × 10 2	Kr-85m		8.0	2.2 × 10 2	3.0	8.1 × 10 1	3.0 × 10 5	8.2 × 10 6	Kr-87		2.0 × 10−1	5.4	2.0 × 10−1	5.4	1.0 × 10 6	2.8 × 10 7	La-137	Lanthanum (57)	3.0 × 10 1	8.1 × 10 2	6.0	1.6 × 10 2	1.6 × 10−3	4.4 × 10−2	La-140		4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	2.1 × 10 4	5.6 × 10 5	Lu-172	Lutetium (71)	6.0 × 10−1	1.6 × 10 1	6.0 × 10−1	1.6 × 10 1	4.2 × 10 3	1.1 × 10 5	Lu-173		8.0	2.2 × 10 2	8.0	2.2 × 10 2	5.6 × 10 1	1.5 × 10 3	Lu-174		9.0	2.4 × 10 2	9.0	2.4 × 10 2	2.3 × 10 1	6.2 × 10 2	Lu-174m		2.0 × 10 1	5.4 × 10 2	1.0 × 10 1	2.7 × 10 2	2.0 × 10 2	5.3 × 10 3	Lu-177		3.0 × 10 1	8.1 × 10 2	7.0 × 10−1	1.9 × 10 1	4.1 × 10 3	1.1 × 10 5	Mg-28 (a)	Magnesium (12)	3.0 × 10−1	8.1	3.0 × 10−1	8.1	2.0 × 10 5	5.4 × 10 6	Mn-52	Manganese (25)	3.0 × 10−1	8.1	3.0 × 10−1	8.1	1.6 × 10 4	4.4 × 10 5	Mn-53		Unlimited	Unlimited	Unlimited	Unlimited	6.8 × 10−5	1.8 × 10−3	Mn-54		1.0	2.7 × 10 1	1.0	2.7 × 10 1	2.9 × 10 2	7.7 × 10 3	Mn-56		3.0 × 10−1	8.1	3.0 × 10−1	8.1	8.0 × 10 5	2.2 × 10 7	Mo-93	Molybdenum (42)	4.0 × 10 1	1.1 × 10 3	2.0 × 10 1	5.4 × 10 2	4.1 × 10−2	1.1	Mo-99(a)(i)		1.0	2.7 × 10 1	6.0 × 10−1	1.6 × 10 1	1.8 × 10 4	4.8 × 10 5	N-13	Nitrogen (7)	9.0 × 10−1	2.4 × 10 1	6.0 × 10−1	1.6 × 10 1	5.4 × 10 7	1.5 × 10 9	Na-22	Sodium (11)	5.0 × 10−1	1.4 × 10 1	5.0 × 10−1	1.4 × 10 1	2.3 × 10 2	6.3 × 10 3	Na-24		2.0 × 10−1	5.4	2.0 × 10−1	5.4	3.2 × 10 5	8.7 × 10 6	Nb-93m	Niobium (41)	4.0 × 10 1	1.1 × 10 3	3.0 × 10 1	8.1 × 10 2	8.8	2.4 × 10 2	Nb-94		7.0 × 10−1	1.9 × 10 1	7.0 × 10−1	1.9 × 10 1	6.9 × 10−3	1.9 × 10−1	Nb-95		1.0	2.7 × 10 1	1.0	2.7 × 10 1	1.5 × 10 3	3.9 × 10 4	Nb-97		9.0 × 10−1	2.4 × 10 1	6.0 × 10−1	1.6 × 10 1	9.9 × 10 5	2.7 × 10 7	Nd-147	Neodymium (60)	6.0	1.6 × 10 2	6.0 × 10−1	1.6 × 10 1	3.0 × 10 3	8.1 × 10 4	Nd-149		6.0 × 10−1	1.6 × 10 1	5.0 × 10−1	1.4 × 10 1	4.5 × 10 5	1.2 × 10 7	Ni-59	Nickel (28)	Unlimited	Unlimited	Unlimited	Unlimited	3.0 × 10−3	8.0 × 10−2	Ni-63		4.0 × 10 1	1.1 × 10 3	3.0 × 10 1	8.1 × 10 2	2.1	5.7 × 10 1	Ni-65		4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	7.1 × 10 5	1.9 × 10 7	Np-235	Neptunium (93)	4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	5.2 × 10 1	1.4 × 10 3	Np-236 (short-lived)		2.0 × 10 1	5.4 × 10 2	2.0	5.4 × 10 1	4.7 × 10−4	1.3 × 10−2	Np-236 (long-lived)		9.0 × 10 0	2.4 × 10 2	2.0 × 10−2	5.4 × 10−1	4.7 × 10−4	1.3 × 10−2	Np-237		2.0 × 10 1	5.4 × 10 2	2.0 × 10−3	5.4 × 10−2	2.6 × 10−5	7.1 × 10−4	Np-239		7.0	1.9 × 10 2	4.0 × 10−1	1.1 × 10 1	8.6 × 10 3	2.3 × 10 5	Os-185	Osmium (76)	1.0	2.7 × 10 1	1.0	2.7 × 10 1	2.8 × 10 2	7.5 × 10 3	Os-191		1.0 × 10 1	2.7 × 10 2	2.0	5.4 × 10 1	1.6 × 10 3	4.4 × 10 4	Os-191m		4.0 × 10 1	1.1 × 10 3	3.0 × 10 1	8.1 × 10 2	4.6 × 10 4	1.3 × 10 6	Os-193		2.0	5.4 × 10 1	6.0 × 10−1	1.6 × 10 1	2.0 × 10 4	5.3 × 10 5	Os-194 (a)		3.0 × 10−1	8.1	3.0 × 10−1	8.1	1.1 × 10 1	3.1 × 10 2	P-32	Phosphorus (15)	5.0 × 10−1	1.4 × 10 1	5.0 × 10−1	1.4 × 10 1	1.1 × 10 4	2.9 × 10 5	P-33		4.0 × 10 1	1.1 × 10 3	1.0	2.7 × 10 1	5.8 × 10 3	1.6 × 10 5	Pa-230 (a)	Protactinium (91)	2.0	5.4 × 10 1	7.0 × 10−2	1.9	1.2 × 10 3	3.3 × 10 4	Pa-231		4.0	1.1 × 10 2	4.0 × 10−4	1.1 × 10−2	1.7 × 10−3	4.7 × 10−2	Pa-233		5.0	1.4 × 10 2	7.0 × 10−1	1.9 × 10 1	7.7 × 10 2	2.1 × 10 4	Pb-201	Lead (82)	1.0	2.7 × 10 1	1.0	2.7 × 10 1	6.2 × 10 4	1.7 × 10 6	Pb-202		4.0 × 10 1	1.1 × 10 3	2.0 × 10 1	5.4 × 10 2	1.2 × 10−4	3.4 × 10−3	Pb-203		4.0	1.1 × 10 2	3.0	8.1 × 10 1	1.1 × 10 4	3.0 × 10 5	Pb-205		Unlimited	Unlimited	Unlimited	Unlimited	4.5 × 10−6	1.2 × 10−4	Pb-210 (a)		1.0	2.7 × 10 1	5.0 × 10−2	1.4	2.8	7.6 × 10 1	Pb-212 (a)		7.0 × 10−1	1.9 × 10 1	2.0 × 10−1	5.4	5.1 × 10 4	1.4 × 10 6	Pd-103 (a)	Palladium (46)	4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	2.8 × 10 3	7.5 × 10 4	Pd-107		Unlimited	Unlimited	Unlimited	Unlimited	1.9 × 10−5	5.1 × 10−4	Pd-109		2.0	5.4 × 10 1	5.0 × 10−1	1.4 × 10 1	7.9 × 10 4	2.1 × 10 6	Pm-143	Promethium (61)	3.0	8.1 × 10 1	3.0	8.1 × 10 1	1.3 × 10 2	3.4 × 10 3	Pm-144		7.0 × 10−1	1.9 × 10 1	7.0 × 10−1	1.9 × 10 1	9.2 × 10 1	2.5 × 10 3	Pm-145		3.0 × 10 1	8.1 × 10 2	1.0 × 10 1	2.7 × 10 2	5.2	1.4 × 10 2	Pm-147		4.0 × 10 1	1.1 × 10 3	2.0	5.4 × 10 1	3.4 × 10 1	9.3 × 10 2	Pm-148m (a)		8.0 × 10−1	2.2 × 10 1	7.0 × 10−1	1.9 × 10 1	7.9 × 10 2	2.1 × 10 4	Pm-149		2.0	5.4 × 10 1	6.0 × 10−1	1.6 × 10 1	1.5 × 10 4	4.0 × 10 5	Pm-151		2.0	5.4 × 10 1	6.0 × 10−1	1.6 × 10 1	2.7 × 10 4	7.3 × 10 5	Po-210	Polonium (84)	4.0 × 10 1	1.1 × 10 3	2.0 × 10−2	5.4 × 10−1	1.7 × 10 2	4.5 × 10 3	Pr-142	Praseodymium (59)	4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	4.3 × 10 4	1.2 × 10 6	Pr-143		3.0	8.1 × 10 1	6.0 × 10−1	1.6 × 10 1	2.5 × 10 3	6.7 × 10 4	Pt-188 (a)	Platinum (78)	1.0	2.7 × 10 1	8.0 × 10−1	2.2 × 10 1	2.5 × 10 3	6.8 × 10 4	Pt-191		4.0	1.1 × 10 2	3.0	8.1 × 10 1	8.7 × 10 3	2.4 × 10 5	Pt-193		4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	1.4	3.7 × 10 1	Pt-193m		4.0 × 10 1	1.1 × 10 3	5.0 × 10−1	1.4 × 10 1	5.8 × 10 3	1.6 × 10 5	Pt-195m		1.0 × 10 1	2.7 × 10 2	5.0 × 10−1	1.4 × 10 1	6.2 × 10 3	1.7 × 10 5	Pt-197		2.0 × 10 1	5.4 × 10 2	6.0 × 10−1	1.6 × 10 1	3.2 × 10 4	8.7 × 10 5	Pt-197m		1.0 × 10 1	2.7 × 10 2	6.0 × 10−1	1.6 × 10 1	3.7 × 10 5	1.0 × 10 7	Pu-236	Plutonium (94)	3.0 × 10 1	8.1 × 10 2	3.0 × 10−3	8.1 × 10−2	2.0 × 10 1	5.3 × 10 2	Pu-237		2.0 × 10 1	5.4 × 10 2	2.0 × 10 1	5.4 × 10 2	4.5 × 10 2	1.2 × 10 4	Pu-238		1.0 × 10 1	2.7 × 10 2	1.0 × 10−3	2.7 × 10−2	6.3 × 10−1	1.7 × 10 1	Pu-239		1.0 × 10 1	2.7 × 10 2	1.0 × 10−3	2.7 × 10−2	2.3 × 10−3	6.2 × 10−2	Pu-240		1.0 × 10 1	2.7 × 10 2	1.0 × 10−3	2.7 × 10−2	8.4 × 10−3	2.3 × 10−1	Pu-241 (a)		4.0 × 10 1	1.1 × 10 3	6.0 × 10−2	1.6	3.8	1.0 × 10 2	Pu-242		1.0 × 10 1	2.7 × 10 2	1.0 × 10−3	2.7 × 10−2	1.5 × 10−4	3.9 × 10−3	Pu-244 (a)		4.0 × 10−1	1.1 × 10 1	1.0 × 10−3	2.7 × 10−2	6.7 × 10−7	1.8 × 10−5	Ra-223 (a)	Radium (88)	4.0 × 10−1	1.1 × 10 1	7.0 × 10−3	1.9 × 10−1	1.9 × 10 3	5.1 × 10 4	Ra-224 (a)		4.0 × 10−1	1.1 × 10 1	2.0 × 10−2	5.4 × 10−1	5.9 × 10 3	1.6 × 10 5	Ra-225 (a)		2.0 × 10−1	5.4	4.0 × 10−3	1.1 × 10−1	1.5 × 10 3	3.9 × 10 4	Ra-226 (a)		2.0 × 10−1	5.4	3.0 × 10−3	8.1 × 10−2	3.7 × 10−2	1.0	Ra-228 (a)		6.0 × 10−1	1.6 × 10 1	2.0 × 10−2	5.4 × 10−1	1.0 × 10 1	2.7 × 10 2	Rb-81	Rubidium (37)	2.0	5.4 × 10 1	8.0 × 10−1	2.2 × 10 1	3.1 × 10 5	8.4 × 10 6	Rb-83 (a)		2.0	5.4 × 10 1	2.0	5.4 × 10 1	6.8 × 10 2	1.8 × 10 4	Rb-84		1.0	2.7 × 10 1	1.0	2.7 × 10 1	1.8 × 10 3	4.7 × 10 4	Rb-86		5.0 × 10−1	1.4 × 10 1	5.0 × 10−1	1.4 × 10 1	3.0 × 10 3	8.1 × 10 4	Rb-87		Unlimited	Unlimited	Unlimited	Unlimited	3.2 × 10−9	8.6 × 10−8	Rb(nat)		Unlimited	Unlimited	Unlimited	Unlimited	6.7 × 10 − 10	1.8 × 10 − 8	Re-184	Rhenium (75)	1.0	2.7 × 10 1	1.0	2.7 × 10 1	6.9 × 10 2	1.9 × 10 4	Re-184m		3.0	8.1 × 10 1	1.0	2.7 × 10 1	1.6 × 10 2	4.3 × 10 3	Re-186		2.0	5.4 × 10 1	6.0 × 10−1	1.6 × 10 1	6.9 × 10 3	1.9 × 10 5	Re-187		Unlimited	Unlimited	Unlimited	Unlimited	1.4 × 10−9	3.8 × 10−8	Re-188		4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	3.6 × 10 4	9.8 × 10 5	Re-189 (a)		3.0	8.1 × 10 1	6.0 × 10−1	1.6 × 10 1	2.5 × 10 4	6.8 × 10 5	Re(nat)		Unlimited	Unlimited	Unlimited	Unlimited	0.0	2.4 × 10−8	Rh-99	Rhodium (45)	2.0	5.4 × 10 1	2.0	5.4 × 10 1	3.0 × 10 3	8.2 × 10 4	Rh-101		4.0	1.1 × 10 2	3.0	8.1 × 10 1	4.1 × 10 1	1.1 × 10 3	Rh-102		5.0 × 10−1	1.4 × 10 1	5.0 × 10−1	1.4 × 10 1	4.5 × 10 1	1.2 × 10 3	Rh-102m		2.0	5.4 × 10 1	2.0	5.4 × 10 1	2.3 × 10 2	6.2 × 10 3	Rh-103m		4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	1.2 × 10 6	3.3 × 10 7	Rh-105		1.0 × 10 1	2.7 × 10 2	8.0 × 10−1	2.2 × 10 1	3.1 × 10 4	8.4 × 10 5	Rn-222 (a)	Radon (86)	3.0 × 10−1	8.1	4.0 × 10−3	1.1 × 10−1	5.7 × 10 3	1.5 × 10 5	Ru-97	Ruthenium (44)	5.0	1.4 × 10 2	5.0	1.4 × 10 2	1.7 × 10 4	4.6 × 10 5	Ru-103 (a)		2.0	5.4 × 10 1	2.0	5.4 × 10 1	1.2 × 10 3	3.2 × 10 4	Ru-105		1.0	2.7 × 10 1	6.0 × 10−1	1.6 × 10 1	2.5 × 10 5	6.7 × 10 6	Ru-106 (a)		2.0 × 10−1	5.4	2.0 × 10−1	5.4	1.2 × 10 2	3.3 × 10 3	S-35	Sulphur (16)	4.0 × 10 1	1.1 × 10 3	3.0	8.1 × 10 1	1.6 × 10 3	4.3 × 10 4	Sb-122	Antimony (51)	4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	1.5 × 10 4	4.0 × 10 5	Sb-124		6.0 × 10−1	1.6 × 10 1	6.0 × 10−1	1.6 × 10 1	6.5 × 10 2	1.7 × 10 4	Sb-125		2.0	5.4 × 10 1	1.0	2.7 × 10 1	3.9 × 10 1	1.0 × 10 3	Sb-126		4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	3.1 × 10 3	8.4 × 10 4	Sc-44	Scandium (21)	5.0 × 10−1	1.4 × 10 1	5.0 × 10−1	1.4 × 10 1	6.7 × 10 5	1.8 × 10 7	Sc-46		5.0 × 10−1	1.4 × 10 1	5.0 × 10−1	1.4 × 10 1	1.3 × 10 3	3.4 × 10 4	Sc-47		1.0 × 10 1	2.7 × 10 2	7.0 × 10−1	1.9 × 10 1	3.1 × 10 4	8.3 × 10 5	Sc-48		3.0 × 10−1	8.1	3.0 × 10−1	8.1	5.5 × 10 4	1.5 × 10 6	Se-75	Selenium (34)	3.0	8.1 × 10 1	3.0	8.1 × 10 1	5.4 × 10 2	1.5 × 10 4	Se-79		4.0 × 10 1	1.1 × 10 3	2.0	5.4 × 10 1	2.6 × 10−3	7.0 × 10−2	Si-31	Silicon (14)	6.0 × 10−1	1.6 × 10 1	6.0 × 10−1	1.6 × 10 1	1.4 × 10 6	3.9 × 10 7	Si-32		4.0 × 10 1	1.1 × 10 3	5.0 × 10−1	1.4 × 10 1	3.9	1.1 × 10 2	Sm-145	Samarium (62)	1.0 × 10 1	2.7 × 10 2	1.0 × 10 1	2.7 × 10 2	9.8 × 10 1	2.6 × 10 3	Sm-147		Unlimited	Unlimited	Unlimited	Unlimited	8.5 × 10−10	2.3 × 10−8	Sm-151		4.0 × 10 1	1.1 × 10 3	1.0 × 10 1	2.7 × 10 2	9.7 × 10−1	2.6 × 10 1	Sm-153		9.0	2.4 × 10 2	6.0 × 10−1	1.6 × 10 1	1.6 × 10 4	4.4 × 10 5	Sn-113 (a)	Tin (50)	4.0	1.1 × 10 2	2.0	5.4 × 10 1	3.7 × 10 2	1.0 × 10 4	Sn-117m		7.0	1.9 × 10 2	4.0 × 10−1	1.1 × 10 1	3.0 × 10 3	8.2 × 10 4	Sn-119m		4.0 × 10 1	1.1 × 10 3	3.0 × 10 1	8.1 × 10 2	1.4 × 10 2	3.7 × 10 3	Sn-121m (a)		4.0 × 10 1	1.1 × 10 3	9.0 × 10−1	2.4 × 10 1	2.0	5.4 × 10 1	Sn-123		8.0 × 10−1	2.2 × 10 1	6.0 × 10−1	1.6 × 10 1	3.0 × 10 2	8.2 × 10 3	Sn-125		4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	4.0 × 10 3	1.1 × 10 5	Sn-126 (a)		6.0 × 10−1	1.6 × 10 1	4.0 × 10−1	1.1 × 10 1	1.0 × 10−3	2.8 × 10−2	Sr-82 (a)	Strontium (38)	2.0 × 10−1	5.4	2.0 × 10−1	5.4	2.3 × 10 3	6.2 × 10 4	Sr-85		2.0	5.4 × 10 1	2.0	5.4 × 10 1	8.8 × 10 2	2.4 × 10 4	Sr-85m		5.0	1.4 × 10 2	5.0	1.4 × 10 2	1.2 × 10 6	3.3 × 10 7	Sr-87m		3.0	8.1 × 10 1	3.0	8.1 × 10 1	4.8 × 10 5	1.3 × 10 7	Sr-89		6.0 × 10−1	1.6 × 10 1	6.0 × 10−1	1.6 × 10 1	1.1 × 10 3	2.9 × 10 4	Sr-90 (a)		3.0 × 10−1	8.1	3.0 × 10−1	8.1	5.1	1.4 × 10 2	Sr-91 (a)		3.0 × 10−1	8.1	3.0 × 10−1	8.1	1.3 × 10 5	3.6 × 10 6	Sr-92 (a)		1.0	2.7 × 10 1	3.0 × 10−1	8.1	4.7 × 10 5	1.3 × 10 7	T(H-3)	Tritium (1)	4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	3.6 × 10 2	9.7 × 10 3	Ta-178 (long-lived)	Tantalum (73)	1.0	2.7 × 10 1	8.0 × 10−1	2.2 × 10 1	4.2 × 10 6	1.1 × 10 8	Ta-179		3.0 × 10 1	8.1 × 10 2	3.0 × 10 1	8.1 × 10 2	4.1 × 10 1	1.1 × 10 3	Ta-182		9.0 × 10−1	2.4 × 10 1	5.0 × 10−1	1.4 × 10 1	2.3 × 10 2	6.2 × 10 3	Tb-157	Terbium (65)	4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	5.6 × 10−1	1.5 × 10 1	Tb-158		1.0	2.7 × 10 1	1.0	2.7 × 10 1	5.6 × 10−1	1.5 × 10 1	Tb-160		1.0	2.7 × 10 1	6.0 × 10−1	1.6 × 10 1	4.2 × 10 2	1.1 × 10 4	Tc-95m (a)	Technetium (43)	2.0	5.4 × 10 1	2.0	5.4 × 10 1	8.3 × 10 2	2.2 × 10 4	Tc-96		4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	1.2 × 10 4	3.2 × 10 5	Tc-96m (a)		4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	1.4 × 10 6	3.8 × 10 7	Tc-97		Unlimited	Unlimited	Unlimited	Unlimited	5.2 × 10−5	1.4 × 10−3	Tc-97m		4.0 × 10 1	1.1 × 10 3	1.0	2.7 × 10 1	5.6 × 10 2	1.5 × 10 4	Tc-98		8.0 × 10−1	2.2 × 10 1	7.0 × 10−1	1.9 × 10 1	3.2 × 10−5	8.7 × 10−4	Tc-99		4.0 × 10 1	1.1 × 10 3	9.0 × 10−1	2.4 × 10 1	6.3 × 10−4	1.7 × 10−2	Tc-99m		1.0 × 10 1	2.7 × 10 2	4.0	1.1 × 10 2	1.9 × 10 5	5.3 × 10 6	Te-121	Tellurium (52)	2.0	5.4 × 10 1	2.0	5.4 × 10 1	2.4 × 10 3	6.4 × 10 4	Te-121m		5.0	1.4 × 10 2	3.0	8.1 × 10 1	2.6 × 10 2	7.0 × 10 3	Te-123m		8.0	2.2 × 10 2	1.0	2.7 × 10 1	3.3 × 10 2	8.9 × 10 3	Te-125m		2.0 × 10 1	5.4 × 10 2	9.0 × 10−1	2.4 × 10 1	6.7 × 10 2	1.8 × 10 4	Te-127		2.0 × 10 1	5.4 × 10 2	7.0 × 10−1	1.9 × 10 1	9.8 × 10 4	2.6 × 10 6	Te-127m (a)		2.0 × 10 1	5.4 × 10 2	5.0 × 10−1	1.4 × 10 1	3.5 × 10 2	9.4 × 10 3	Te-129		7.0 × 10−1	1.9 × 10 1	6.0 × 10−1	1.6 × 10 1	7.7 × 10 5	2.1 × 10 7	Te-129m (a)		8.0 × 10−1	2.2 × 10 1	4.0 × 10−1	1.1 × 10 1	1.1 × 10 3	3.0 × 10 4	Te-131m (a)		7.0 × 10−1	1.9 × 10 1	5.0 × 10−1	1.4 × 10 1	3.0 × 10 4	8.0 × 10 5	Te-132 (a)		5.0 × 10−1	1.4 × 10 1	4.0 × 10−1	1.1 × 10 1	1.1 × 10 4	3.0 × 10 5	Th-227	Thorium (90)	1.0 × 10 1	2.7 × 10 2	5.0 × 10−3	1.4 × 10−1	1.1 × 10 3	3.1 × 10 4	Th-228 (a)		5.0 × 10−1	1.4 × 10 1	1.0 × 10−3	2.7 × 10−2	3.0 × 10 1	8.2 × 10 2	Th-229		5.0	1.4 × 10 2	5.0 × 10−4	1.4 × 10−2	7.9 × 10−3	2.1 × 10−1	Th-230		1.0 × 10 1	2.7 × 10 2	1.0 × 10−3	2.7 × 10−2	7.6 × 10−4	2.1 × 10−2	Th-231		4.0 × 10 1	1.1 × 10 3	2.0 × 10−2	5.4 × 10−1	2.0 × 10 4	5.3 × 10 5	Th-232		Unlimited	Unlimited	Unlimited	Unlimited	4.0 × 10−9	1.1 × 10−7	Th-234 (a)		3.0 × 10−1	8.1	3.0 × 10−1	8.1	8.6 × 10 2	2.3 × 10 4	Th(nat)		Unlimited	Unlimited	Unlimited	Unlimited	8.1 × 10−9	2.2 × 10−7	Ti-44 (a)	Titanium (22)	5.0 × 10−1	1.4 × 10 1	4.0 × 10−1	1.1 × 10 1	6.4	1.7 × 10 2	Tl-200	Thallium (81)	9.0 × 10−1	2.4 × 10 1	9.0 × 10−1	2.4 × 10 1	2.2 × 10 4	6.0 × 10 5	Tl-201		1.0 × 10 1	2.7 × 10 2	4.0	1.1 × 10 2	7.9 × 10 3	2.1 × 10 5	Tl-202		2.0	5.4 × 10 1	2.0	5.4 × 10 1	2.0 × 10 3	5.3 × 10 4	Tl-204		1.0 × 10 1	2.7 × 10 2	7.0 × 10−1	1.9 × 10 1	1.7 × 10 1	4.6 × 10 2	Tm-167	Thulium (69)	7.0	1.9 × 10 2	8.0 × 10−1	2.2 × 10 1	3.1 × 10 3	8.5 × 10 4	Tm-170		3.0	8.1 × 10 1	6.0 × 10−1	1.6 × 10 1	2.2 × 10 2	6.0 × 10 3	Tm-171		4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	U-230 (fast lung absorption) (a)(d)	Uranium (92)	4.0 × 10 1	1.1 × 10 3	1.0 × 10−1	2.7	1.0 × 10 3	2.7 × 10 4	U-230 (medium lung absorption) (a)(e)		4.0 × 10 1	1.1 × 10 3	4.0 × 10−3	1.1 × 10−1	1.0 × 10 3	2.7 × 10 4	U-230 (slow lung absorption) (a)(f)		3.0 × 10 1	8.1 × 10 2	3.0 × 10−3	8.1 × 10−2	1.0 × 10 3	2.7 × 10 4	U-232 (fast lung absorption) (d)		4.0 × 10 1	1.1 × 10 3	1.0 × 10−2	2.7 × 10−1	8.3 × 10−1	2.2 × 10 1	U-232 (medium lung absorption) (e)		4.0 × 10 1	1.1 × 10 3	7.0 × 10−3	1.9 × 10−1	8.3 × 10−1	2.2 × 10 1	U-232 (slow lung absorption) (f)		1.0 × 10 1	2.7 × 10 2	1.0 × 10−3	2.7 × 10−2	8.3 × 10−1	2.2 × 10 1	U-233 (fast lung absorption) (d)		4.0 × 10 1	1.1 × 10 3	9.0 × 10−2	2.4	3.6 × 10−4	9.7 × 10−3	U-233 (medium lung absorption) (e)		4.0 × 10 1	1.1 × 10 3	2.0 × 10−2	5.4 × 10−1	3.6 × 10−4	9.7 × 10−3	U-233 (slow lung absorption) (f)		4.0 × 10 1	1.1 × 10 3	6.0 × 10−3	1.6 × 10−1	3.6 × 10−4	9.7 × 10−3	U-234 (fast lung absorption) (d)		4.0 × 10 1	1.1 × 10 3	9.0 × 10−2	2.4	2.3 × 10−4	6.2 × 10−3	U-234 (medium lung absorption) (e)		4.0 × 10 1	1.1 × 10 3	2.0 × 10−2	5.4 × 10−1	2.3 × 10−4	6.2 × 10−3	U-234 (slow lung absorption) (f)		4.0 × 10 1	1.1 × 10 3	6.0 × 10−3	1.6 × 10−1	2.3 × 10−4	6.2 × 10−3	U-235 (all lung absorption types) (a),(d),(e),(f)		Unlimited	Unlimited	Unlimited	Unlimited	8.0 × 10−8	2.2 × 10−6	U-236 (fast lung absorption) (d)		Unlimited	Unlimited	Unlimited	Unlimited	2.4 × 10−6	6.5 × 10−5	U-236 (medium lung absorption) (e)		4.0 × 10 1	1.1 × 10 3	2.0 × 10−2	5.4 × 10−1	2.4 × 10−6	6.5 × 10−5	U-236 (slow lung absorption) (f)		4.0 × 10 1	1.1 × 10 3	6.0 × 10−3	1.6 × 10−1	2.4 × 10−6	6.5 × 10−5	U-238 (all lung absorption types) (d),(e),(f)		Unlimited	Unlimited	Unlimited	Unlimited	1.2 × 10−8	3.4 × 10−7	U (nat)		Unlimited	Unlimited	Unlimited	Unlimited	2.6 × 10−8	7.1 × 10−7	U (enriched to 20% or less)(g)		Unlimited	Unlimited	Unlimited	Unlimited	see § 173.434	see § 173.434	U (dep)		Unlimited	Unlimited	Unlimited	Unlimited	see § 173.434	see § 173.434	V-48	Vanadium (23)	4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	6.3 × 10 3	1.7 × 10 5	V-49		4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	3.0 × 10 2	8.1 × 10 3	W-178 (a)	Tungsten (74)	9.0	2.4 × 10 2	5.0	1.4 × 10 2	1.3 × 10 3	3.4 × 10 4	W-181		3.0 × 10 1	8.1 × 10 2	3.0 × 10 1	8.1 × 10 2	2.2 × 10 2	6.0 × 10 3	W-185		4.0 × 10 1	1.1 × 10 3	8.0 × 10−1	2.2 × 10 1	3.5 × 10 2	9.4 × 10 3	W-187		2.0	5.4 × 10 1	6.0 × 10−1	1.6 × 10 1	2.6 × 10 4	7.0 × 10 5	W-188 (a)		4.0 × 10−1	1.1 × 10 1	3.0 × 10−1	8.1	3.7 × 10 2	1.0 × 10 4	Xe-122 (a)	Xenon (54)	4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	4.8 × 10 4	1.3 × 10 6	Xe-123		2.0	5.4 × 10 1	7.0 × 10−1	1.9 × 10 1	4.4 × 10 5	1.2 × 10 7	Xe-127		4.0	1.1 × 10 2	2.0	5.4 × 10 1	1.0 × 10 3	2.8 × 10 4	Xe-131m		4.0 × 10 1	1.1 × 10 3	4.0 × 10 1	1.1 × 10 3	3.1 × 10 3	8.4 × 10 4	Xe-133		2.0 × 10 1	5.4 × 10 2	1.0 × 10 1	2.7 × 10 2	6.9 × 10 3	1.9 × 10 5	Xe-135		3.0	8.1 × 10 1	2.0	5.4 × 10 1	9.5 × 10 4	2.6 × 10 6	Y-87 (a)	Yttrium (39)	1.0	2.7 × 10 1	1.0	2.7 × 10 1	1.7 × 10 4	4.5 × 10 5	Y-88		4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	5.2 × 10 2	1.4 × 10 4	Y-90		3.0 × 10−1	8.1	3.0 × 10−1	8.1	2.0 × 10 4	5.4 × 10 5	Y-91		6.0 × 10−1	1.6 × 10 1	6.0 × 10−1	1.6 × 10 1	9.1 × 10 2	2.5 × 10 4	Y-91m		2.0	5.4 × 10 1	2.0	5.4 × 10 1	1.5 × 10 6	4.2 × 10 7	Y-92		2.0 × 10−1	5.4	2.0 × 10−1	5.4	3.6 × 10 5	9.6 × 10 6	Y-93		3.0 × 10−1	8.1	3.0 × 10−1	8.1	1.2 × 10 5	3.3 × 10 6	Yb-169	Ytterbium (70)	4.0	1.1 × 10 2	1.0	2.7 × 10 1	8.9 × 10 2	2.4 × 10 4	Yb-175		3.0 × 10 1	8.1 × 10 2	9.0 × 10−1	2.4 × 10 1	6.6 × 10 3	1.8 × 10 5	Zn-65	Zinc (30)	2.0	5.4 × 10 1	2.0	5.4 × 10 1	3.0 × 10 2	8.2 × 10 3	Zn-69		3.0	8.1 × 10 1	6.0 × 10−1	1.6 × 10 1	1.8 × 10 6	4.9 × 10 7	Zn-69m (a)		3.0	8.1 × 10 1	6.0 × 10−1	1.6 × 10 1	1.2 × 10 5	3.3 × 10 6	Zr-88	Zirconium (40)	3.0	8.1 × 10 1	3.0	8.1 × 10 1	6.6 × 10 2	1.8 × 10 4	Zr-93		Unlimited	Unlimited	Unlimited	Unlimited	9.3 × 10−5	2.5 × 10−3	Zr-95 (a)		2.0	5.4 × 10 1	8.0 × 10−1	2.2 × 10 1	7.9 × 10 2	2.1 × 10 4	Zr-97 (a)		4.0 × 10−1	1.1 × 10 1	4.0 × 10−1	1.1 × 10 1	7.1 × 10 4	1.9 × 10 6

aA1 and/or A2 values for these parent radionuclides include contributions from daughter nuclides with half-lives less than 10 days as listed in footnote (a) to Table 2 in the “IAEA Regulations for the Safe Transport of Radioactive Material, SSR-6” (IBR, see § 171.7 of this subchapter).

b The values of A1 and A2 in curies (Ci) are approximate and for information only; the regulatory standard units are Terabecquerels (TBq), (see § 171.10).

c The activity of Ir-192 in special form may be determined from a measurement of the rate of decay or a measurement of the radiation level at a prescribed distance from the source.

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.

h [Reserved]

i A2 = 0.74 TBq (20 Ci) for Mo-99 for domestic use.

[69 FR 3678, Jan. 26, 2004; 69 FR 55119, Sept. 13, 2004, as amended at 71 FR 54395, Sept. 14, 2006; 77 FR 60942, Oct. 5, 2012; 79 FR 40615, July 11, 2014; 80 FR 1163, Jan. 8, 2015; 85 FR 83401, Dec. 21, 2020]