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

Regulations last checked for updates: May 15, 2024

Title 49 - Transportation last revised: May 13, 2024

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
Symbol of radionuclide	Element and atomic number	A1 (TBq)	A1 (Ci) ^b	A2 (TBq)	A2 (Ci) ^b	(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]

authority: 49 U.S.C. 5101-5128,44701; 49 CFR 1.81, 1.96 and 1.97

cite as: 49 CFR 173.435