12VAC5-481-3770. Determination of A1 and A2.

A. Values of A₁ and A₂ for individual radionuclides, which are the bases for many activity limits elsewhere in these regulations, are given in Table 1 of this section. The curie (Ci) values specified are obtained by converting from the Terabecquerel (TBq) value. The terabecquerel values are the regulatory standard. The curie values are for information only and are not intended to be the regulatory standard. Where values of A₁ and A₂ are unlimited, it is for radiation control purposes only. For nuclear criticality safety, some materials are subject to controls placed on fissile material.

B. For individual radionuclides whose identities are known, but that are not listed in Table 1 or Table 2 of this section, the A₁ and A₂values or exempt material activity concentration and exempt consignment activity values contained in Table 3 of this section may be used. Otherwise, the licensee shall obtain prior agency approval for radionuclides not listed in Table 1 or Table 2 of this section, before shipping the material. The licensee shall submit requests for prior approval to the agency.

C. In the calculations of A₁ and A₂for a radionuclide not in Table 1 of this section, a single radioactive decay chain, in which radionuclides are present in their naturally occurring proportions, and in which no daughter radionuclide has a half-life either longer than 10 days, or longer than that of the parent radionuclide, shall be considered as a single radionuclide, and the activity to be taken into account, and the A₁ orA₂ value to be applied, shall be those corresponding to the parent radionuclide of that chain. In the case of radioactive decay chains in which any daughter radionuclide has a half-life either longer than 10 days or greater than that of the parent radionuclide, the parent and those daughter radionuclides shall be considered as mixtures of different radionuclides.

D. For mixtures of radionuclides whose identities and respective activities are known, the following conditions apply:

1. For special form radioactive material, the maximum quantity transported in a Type A package is as follows:

where B(i) is the activity of radionuclide (i) in special form, and A₁(i) is the A₁ value for radionuclide (i).

2. For normal form radioactive material, the maximum quantity transported in a Type A package is as follows:

where B(i) is the activity of radionuclide (i) in normal form, and A₂(i) is the A₂ value for radionuclide (i).

3. If the package contains both special and normal form radioactive material, the activity that may be transported in the Type A package is as follows:

Where B(i) is the activity of radionuclide i (i) as special form radioactive material, A₁(i) is the A₁ value for the radionuclide (i), C(j) is the activity of radionuclide (j) as normal form radioactive material, and A₂(j) is the A₂ value for radionuclide (j).

4. Alternatively, the A₁ value for mixtures of special form material may be determined as follows:

Description: Description: Description: Formula for A Sub1 value formixtures of special form material

where f(i) is the fraction of activity for radionuclide (i) in the mixture, and A₁(i) is the appropriate A₁ value for radionuclide (i).

5. Alternatively, the A₂ value for mixtures of normal form material may be determined as follows:

Description: Description: Description: Formula for A Sub2 value formixtures of normal form material

where f(i) is the fraction of activity for radionuclide (i) in the mixture, and A₂(i) is the appropriate A₂ value for radionuclide (i).

6. The exempt activity concentration for mixtures of nuclides may be determined as follows:

Description: Description: Description: Formula for exempt activityconcentration for mixture of nuclides

where f(i) is the fraction of activity concentration of radionuclide (i) in the mixture, and [A](i) is the activity concentration for exempt material containing radionuclide (i).

7. The activity limit for an exempt consignment for mixtures of radionuclides may be determined as follows:

Description: Description: Description: Formula for the activity limit for anexempt consignment for mixtures of radionuclides

where f(i) is the fraction of activity of radionuclide (i) in the mixture, and [A](i) is the activity limit for exempt consignments for radionuclide (i).

E. When the identity of each radionuclide is known, but the individual activities of some of the radionuclides are not known, the radionuclides may be grouped, and the lowest A₁ or A₂ value or lowest [A] (activity concentration for exempt material or A (activity limit for exempt consignment) value, as appropriate, for the radionuclides in each group may be used in applying the formulas in subsection D of this section. Groups may be based on the total alpha activity and the total beta/gamma activity when these are known, using the lowest A₁ or A₂ values or the lowest [A] or A value, as appropriate, for the alpha emitters and beta/gamma emitters.

F. Table 1. A₁ and A₂ Values for Radionuclides.

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)		8.0X10^-1	2.2X10^-1	6.0X10^-3	1.6X10^-1	2.1X10³	5.8X10⁴
Ac-227 (a)			9.0X10^-1	2.4X10¹	9.0X10^-5	2.4X10^-3	2.7	7.2X10¹
Ac-228			6.0X10^-1	1.6X10¹	5.0X10^-1	1.4X10¹	8.4X10⁴	2.2X10⁶
Ag-105	Silver (47)		2.0	5.4X10¹	2.0	5.4X10¹	1.1X10³	3.0X10⁴
Ag-108m (a)			7.0X10^-1	1.9X10¹	7.0X10^-1	1.9X10¹	9.7X10^-1	2.6X10¹
Ag-110m (a)			4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	1.8X10²	4.7X10³
Ag-111			2.0	5.4X10¹	6.0X10^-1	1.6X10¹	5.8X10³	1.6X10⁵
Al-26	Aluminum (13)		1.0X10^-1	2.7	1.0X10^-1	2.7	7.0X10^-4	1.9X10^-2
Am-241	Americium (95)		1.0X10¹	2.7X10²	1.0X10^-3	2.7X10^-2	1.3X10^-1	3.4
Am-242m (a)			1.0X10¹	2.7X10²	1.0X10^-3	2.7X10^-2	3.6X10^-1	1.0X10¹
Am-243 (a)			5.0	1.4X10²	1.0X10^-3	2.7X10^-2	7.4X10^-3	2.0X10^-1
Ar-37	Argon (18)		4.0X10¹	1.1X10³	4.0X101	1.1X10³	3.7X10³	9.9X10⁴
Ar-39			4.0X10¹	1.1X10³	2.0X10¹	5.4X10²	1.3	3.4X10¹
Ar-41			3.0X10^-1	8.1	3.0X10^-1	8.1	1.5X106	4.2X10⁷
As-72	Arsenic (33)		3.0X10^-1	8.1	3.0X10^-1	8.1	6.2X10⁴	1.7X10⁶
As-73			4.0X10¹	1.1X10³	4.0X10¹	1.1X10³	8.2X10²	2.2X10⁴
As-74			1.0	2.7X10¹	9.0X10^-1	2.4X10¹	3.7X10³	9.9X10⁴
As-76			3.0X10^-1	8.1	3.0X10^-1	8.1	5.8X10⁴	1.6X10⁶
As-77			2.0X10¹	5.4X10²	7.0X10^-1	1.9X10¹	3.9X10⁴	1.0X10⁶
At-211 (a)	Astatine (85)		2.0X10¹	5.4X10²	5.0X10^-1	1.4X10¹	7.6X10⁴	2.1X10⁶
Au-193	Gold (79)		7.0	1.9X10²	2.0	5.4X10¹	3.4X10⁴	9.2X10⁵
Au-194			1.0	2.7X10¹	1.0	2.7X10¹	1.5X10⁴	4.1X10⁵
Au-195			1.0X10¹	2.7X10²	6.0	1.6X10²	1.4X10²	3.7X10³
Au-198			1.0	2.7X10¹	6.0X10^-1	1.6X10¹	9.0X10³	2.4X10⁵
Au-199			1.0X10¹	2.7X10²	6.0X10^-1	1.6X10¹	7.7X10³	2.1X10⁵
Ba-131 (a)	Barium (56)		2.0	5.4X10¹	2.0	5.4X10¹	3.1X10³	8.4X10⁴
Ba-133			3.0	8.1X10¹	3.0	8.1X10¹	9.4	2.6X10²
Ba-133m			2.0X10¹	5.4X10²	6.0X10^-1	1.6X10¹	2.2X10⁴	6.1X10⁵
Ba-140 (a)			5.0X10^-1	1.4X101	3.0X10^-1	8.1	2.7X103	7.3X10⁴
Be-7	Beryllium (4)		2.0X10¹	5.4X10²	2.0X101	5.4X102	1.3X10⁴	3.5X10⁵
Be-10			4.0X10¹	1.1X10³	6.0X10^-1	1.6X10¹	8.3X10^-4	2.2X10^-2
Bi-205	Bismuth (83)		7.0X10^-1	1.9X10¹	7.0X10^-1	1.9X10¹	1.5X10³	4.2X10⁴
Bi-206			3.0X10^-1	8.1	3.0X10^-1	8.1	3.8X10³	1.0X10⁵
Bi-207			7.0X10^-1	1.9X10¹	7.0X10^-1	1.9X10¹	1.9	5.2X10¹
Bi-210			1.0	2.7X10¹	6.0X10^-1	1.6X10¹	4.6X10³	1.2X10⁵
Bi-210m (a)			6.0X10^-1	1.6X10¹	2.0X10^-2	5.4X10^-1	2.1X10^-5	5.7X10^-4
Bi-212 (a)			7.0X10^-1	1.9X10¹	6.0X10^-1	1.6X10¹	5.4X10⁵	1.5X10⁷
Bk-247	Berkelium (97)		8.0	2.2X10²	8.0X10^-4	2.2X10-2	3.8X10^-2	1.0
Bk-249 (a)			4.0X10¹	1.1X103	3.0X10^-1	8.1	6.1X10¹	1.6X10³
Br-76	Bromine (35)		4.0X10^-1	1.1X101	4.0X10^-1	1.1X10¹	9.4X10⁴	2.5X10⁶
Br-77			3.0	8.1X10¹	3.0	8.1X10¹	2.6X10⁴	7.1X10⁵
Br-82			4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	4.0X10⁴	1.1X10⁶
C-11	Carbon (6)		1.0	2.7X10¹	6.0X10^-1	1.6X10¹	3.1X10⁷	8.4X10⁸
C-14			4.0X10¹	1.1X10³	3.0	8.1X10¹	1.6X10^-1	4.5
Ca-41	Calcium (20)		Unlimited	Unlimited	Unlimited	Unlimited	3.1X10^-3	8.5X10^-2
Ca-45			4.0X10¹	1.1X10³	1.0	2.7X10¹	6.6X10²	1.8X10⁴
Ca-47 (a)			3.0	8.1X10¹	3.0X10^-1	8.1	2.3X10⁴	6.1X10⁵
Cd-109	Cadmium (48)		3.0X10¹	8.1X10²	2.0	5.4X10¹	9.6X10¹	2.6X10³
Cd-113m			4.0X10¹	1.1X10³	5.0X10^-1	1.4X10¹	8.3	2.2X10²
Cd-115 (a)			3.0	8.1X10¹	4.0X10^-1	1.1X10¹	1.9X10⁴	5.1X10⁵
Cd-115m			5.0X10^-1	1.4X10¹	5.0X10^-1	1.4X10¹	9.4X10²	2.5X10⁴
Ce-139	Cerium (58)		7.0	1.9X10²	2.0	5.4X10¹	2.5X10²	6.8X10³
Ce-141			2.0X10¹	5.4X10²	6.0X10^-1	1.6X10¹	1.1X10³	2.8X10⁴
Ce-143			9.0X10^-1	2.4X10¹	6.0X10^-1	1.6X10¹	2.5X10⁴	6.6X10⁵
Ce-144 (a)			2.0X10^-1	5.4	2.0X10^-1	5.4	1.2X10²	3.2X10³
Cf-248	Californium (98)		4.0X10¹	1.1X10³	6.0X10^-3	1.6X10^-1	5.8X10¹	1.6X10³
Cf-249			3.0	8.1X10¹	8.0X10^-4	2.2X10^-2	1.5X10^-1	4.1
Cf-250			2.0X10¹	5.4X10²	2.0X10^-3	5.4X10^-2	4.0	1.1X10²
Cf-251			7.0	1.9X10²	7.0X10^-4	1.9X10^-2	5.9X10^-2	1.6
Cf-252			1.0X10^-1	2.7	3.0X10^-3	8.1X10^-2	2.0X10¹	5.4X10²
Cf-253 (a)			4.0X10¹	1.1X10³	4.0X10^-2	1.1	1.1X10³	2.9X10⁴
Cf-254			1.0X10^-3	2.7X10^-2	1.0X10^-3	2.7X10^-2	3.1X10²	8.5X10³
Cl-36	Chlorine (17)		1.0X10¹	2.7X10²	6.0X10^-1	1.6X10¹	1.2X10^-3	3.3X10^-2
Cl-38			2.0X10^-1	5.4	2.0X10^-1	5.4	4.9X10⁶	1.3X10⁸
Cm-240	Curium (96)		4.0X10¹	1.1X10³	2.0X10^-2	5.4X10^-1	7.5X10²	2.0X10⁴
Cm-241			2.0	5.4X10¹	1.0	2.7X10¹	6.1X10²	1.7X10⁴
Cm-242			4.0X10¹	1.1X10³	1.0X10^-2	2.7X10^-1	1.2X10²	3.3X10³
Cm-243			9.0	2.4X10²	1.0X10^-3	2.7X10^-2	1.9X10^-3	5.2X10⁴
Cm-244			2.0X10¹	5.4X10²	2.0X10^-3	5.4X10^-2	3.0	8.1X10¹
Cm-245			9.0	2.4X10²	9.0X10^-4	2.4X10^-2	6.4X10^-3	1.7X10^-1
Cm-246			9.0	2.4X10²	9.0X10^-4	2.4X10^-2	1.1X10^-2	3.1X10^-1
Cm-247 (a)			3.0	8.1X10¹	1.0X10^-3	2.7X10^-2	3.4X10^-6	9.3X10^-5
Cm-248			2.0X10^-2	5.4X10^-1	3.0X10^-4	8.1X10^-3	1.6X10^-4	4.2X10^-3
Co-55	Cobalt (27)		5.0X10^-1	1.4X10¹	5.0X10^-1	1.4X10¹	1.1X10⁵	3.1X10⁶
Co-56			3.0X10^-1	8.1	3.0X10^-1	8.1	1.1X10³	3.0X10⁴
Co-57			1.0X101	2.7X10²	1.0X10¹	2.7X10²	3.1X10²	8.4X10³
Co-58			1.0	2.7X10¹	1.0	2.7X10¹	1.2X10³	3.2X10⁴
Co-58m			4.0X101	1.1X10³	4.0X10¹	1.1X10³	2.2X10⁵	5.9X10⁶
Co-60			4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	4.2X10¹	1.1X10³
Cr-51	Chromium (24)		3.0X101	8.1X10²	3.0X10¹	8.1X10²	3.4X10³	9.2X10⁴
Cs-129	Cesium (55)		4.0	1.1X10²	4.0	1.1X10²	2.8X104	7.6X10⁵
Cs-131			3.0X10¹	8.1X10²	3.0X10¹	8.1X10²	3.8X10³	1.0X10⁵
Cs-132			1.0	2.7X10¹	1.0	2.7X10¹	5.7X10³	1.5X10⁵
Cs-134			7.0X10^-1	1.9X10¹	7.0X10^-1	1.9X10¹	4.8X10¹	1.3X10³
Cs-134m			4.0X10¹	1.1X10³	6.0X10^-1	1.6X10¹	3.0X10⁵	8.0X10⁶
Cs-135			4.0X10¹	1.1X10³	1.0	2.7X10¹	4.3X10^-5	1.2X10^-3
Cs-136			5.0X10^-1	1.4X10¹	5.0X10^-1	1.4X10¹	2.7X10³	7.3X10⁴
Cs-137 (a)			2.0	5.4X10¹	6.0X10^-1	1.6X101	3.2	8.7X10¹
Cu-64	Copper (29)		6.0	1.6X10²	1.0	2.7X10¹	1.4X10⁵	3.9X10⁶
Cu-67			1.0X10¹	2.7X10²	7.0X10^-1	1.9X10¹	2.8X10⁴	7.6X10⁵
Dy-159	Dysprosium (66)		2.0X10¹	5.4X10²	2.0X10¹	5.4X10²	2.1X10²	5.7X10³
Dy-165			9.0X10^-1	2.4X10¹	6.0X10^-1	1.6X10¹	3.0X10⁵	8.2X10⁶
Dy-166 (a)			9.0X10^-1	2.4X10¹	3.0X10^-1	8.1	8.6X10³	2.3X10⁵
Er-169	Erbium (68)		4.0X10¹	1.1X10³	1.0	2.7X10¹	3.1X10³	8.3X10⁴
Er-171			8.0X10^-1	2.2X10¹	5.0X10^-1	1.4X10¹	9.0X10⁴	2.4X10⁶
Eu-147	Europium (63)		2.0	5.4X10¹	2.0	5.4X10¹	1.4X10³	3.7X10⁴
Eu-148			5.0X10^-1	1.4X10¹	5.0X10^-1	1.4X10¹	6.0X10²	1.6X10⁴
Eu-149			2.0X10¹	5.4X10²	2.0X10¹	5.4X10²	3.5X10²	9.4X10³
Eu-150 (short lived)			2.0	5.4X10¹	7.0X10^-1	1.9X10¹	6.1X10⁴	1.6X10⁶
Eu-150 (long lived)			7.0X10^-1	1.9X10¹	7.0X10^-1	1.9X10¹	6.1X10⁴	1.6X10⁶
Eu-152			1.0	2.7X10¹	1.0	2.7X10¹	6.5	1.8X10²
Eu-152m			8.0X10^-1	2.2X10¹	8.0X10^-1	2.2X10¹	8.2X10⁴	2.2X10⁶
Eu-154			9.0X10^-1	2.4X10¹	6.0X10^-1	1.6X10¹	9.8	2.6X10²
Eu-155			2.0X10¹	5.4X10²	3.0	8.1X10¹	1.8X10¹	4.9X10²
Eu-156			7.0X10^-1	1.9X10¹	7.0X10^-1	1.9X10¹	2.0X10³	5.5X10⁴
F-18	Fluorine (9)		1.0	2.7X10¹	6.0X10^-1	1.6X10¹	3.5X10⁶	9.5X107
Fe-52 (a)	Iron (26)		3.0X10^-1	8.1	3.0X10^-1	8.1	2.7X10⁵	7.3X10⁶
Fe-55			4.0X10¹	1.1X10³	4.0X10¹	1.1X10³	8.8X10¹	2.4X10³
Fe-59			9.0X10^-1	2.4X10¹	9.0X10^-1	2.4X10¹	1.8X10³	5.0X10⁴
Fe-60 (a)			4.0X10¹	1.1X10³	2.0X10^-1	5.4	7.4X10^-4	2.0X10^-2
Ga-67	Gallium (31)		7.0	1.9X10²	3.0	8.1X10¹	2.2X10⁴	6.0X10⁵
Ga-68			5.0X10^-1	1.4X10¹	5.0X10^-1	1.4X10¹	1.5X10⁶	4.1X10⁷
Ga-72			4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	1.1X10⁵	3.1X10⁶
Gd-146 (a)	Gadolinium (64)		5.0X10^-1	1.4X10¹	5.0X10^-1	1.4X10¹	6.9X10²	1.9X10⁴
Gd-148			2.0X10¹	5.4X10²	2.0X10^-3	5.4X10^-2	1.2	3.2X10¹
Gd-153			1.0X10¹	2.7X10²	9.0	2.4X10²	1.3X10²	3.5X10³
Gd-159			3.0	8.1X10¹	6.0X10^-1	1.6X10¹	3.9X10⁴	1.1X10⁶
Ge-68 (a)	Germanium (32)		5.0X10^-1	1.4X10¹	5.0X10^-1	1.4X10¹	2.6X10²	7.1X10³
Ge-71			4.0X10¹	1.1X10³	4.0X10¹	1.1X10³	5.8X10³	1.6X10⁵
Ge-77			3.0X10^-1	8.1	3.0X10^-1	8.1	1.3X10⁵	3.6X10⁶
Hf-172 (a)	Hafnium (72)		6.0X10^-1	1.6X10¹	6.0X10^-1	1.6X10¹	4.1X10¹	1.1X10³
Hf-175			3.0	8.1X10¹	3.0	8.1X10¹	3.9X10²	1.1X10⁴
Hf-181			2.0	5.4X10¹	5.0X10^-1	1.4X10¹	6.3X10²	1.7X10⁴
Hf-182			Unlimited	Unlimited	Unlimited	Unlimited	8.1X10^-6	2.2X10^-4
Hg-194 (a)	Mercury (80)		1.0	2.7X10¹	1.0	2.7X10¹	1.3X10^-1	3.5
Hg-195m (a)			3.0	8.1X10¹	7.0X10^-1	1.9X10¹	1.5X10⁴	4.0X10⁵
Hg-197			2.0X10¹	5.4X10²	1.0X10¹	2.7X10²	9.2X10³	2.5X10⁵
Hg-197m			1.0X10¹	2.7X10²	4.0X10^-1	1.1X10¹	2.5X10⁴	6.7X10⁵
Hg-203			5.0	1.4X10²	1.0	2.7X10¹	5.1X10²	1.4X10⁴
Ho-166	Holmium (67)		4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	2.6X10⁴	7.0X10⁵
Ho-166m			6.0X10^-1	1.6X10¹	5.0X10^-1	1.4X10¹	6.6X10^-2	1.8
I-123	Iodine (53)		6.0	1.6X10²	3.0	8.1X10¹	7.1X10⁴	1.9X10⁶
I-124			1.0	2.7X10¹	1.0	2.7X10¹	9.3X10³	2.5X10⁵
I-125			2.0X10¹	5.4X10²	3.0	8.1X10¹	6.4X10²	1.7X10⁴
I-126			2.0	5.4X10¹	1.0	2.7X10¹	2.9X10³	8.0X10⁴
I-129			Unlimited	Unlimited	Unlimited	Unlimited	6.5X10^-6	1.8X10^-4
I-131			3.0	8.1X10¹	7.0X10^-1	1.9X10¹	4.6X10³	1.2X10⁵
I-132			4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	3.8X10⁵	1.0X10⁷
I-133			7.0X10^-1	1.9X10¹	6.0X10^-1	1.6X10¹	4.2X10⁴	1.1X10⁶
I-134			3.0X10^-1	8.1	3.0X10^-1	8.1	9.9X10⁵	2.7X10⁷
I-135 (a)			6.0X10^-1	1.6X10¹	6.0X10^-1	1.6X10¹	1.3X10⁵	3.5X10⁶
In-111	Indium (49)		3.0	8.1X10¹	3.0	8.1X10¹	1.5X10⁴	4.2X10⁵
In-113m			4.0	1.1X10²	2.0	5.4X10¹	6.2X10⁵	1.7X10⁷
In-114m (a)			1.0X10¹	2.7X10²	5.0X10^-1	1.4X10¹	8.6X10²	2.3X10⁴
In-115m			7.0	1.9X10²	1.0	2.7X10¹	2.2X10⁵	6.1X10⁶
Ir-189 (a)	Iridium (77)		1.0X10¹	2.7X10²	1.0X10¹	2.7X10²	1.9X10³	5.2X10⁴
Ir-190			7.0X10^-1	1.9X10¹	7.0X10^-1	1.9X10¹	2.3X10³	6.2X10⁴
Ir-192			1.0 (c)	2.7X10¹(c)	6.0X10^-1	1.6X10¹	3.4X10²	9.2X10³
Ir-194			3.0X10^-1	8.1	3.0X10^-1	8.1	3.1X10⁴	8.4X10⁵
K-40	Potassium (19)		9.0X10^-1	2.4X10¹	9.0X10^-1	2.4X10¹	2.4X10^-7	6.4X10^-6
K-42			2.0X10^-1	5.4	2.0X10^-1	5.4	2.2X10⁵	6.0X10⁶
K-43			7.0X10^-1	1.9X10¹	6.0X10^-1	1.6X10¹	1.2X10⁵	3.3X10⁶
Kr-79	Krypton (36)		4.0	1.1X10²	2.0	5.4X10¹	4.2X10⁴	1.1X10⁶
Kr-81			4.0X10¹	1.1X10³	4.0X10¹	1.1X10³	7.8X10^-4	2.1X10^-2
Kr-85			1.0X10¹	2.7X10²	1.0X10¹	2.7X10²	1.5X10¹	3.9X10²
Kr-85m			8.0	2.2X10²	3.0	8.1X10¹	3.0X10⁵	8.2X10⁶
Kr-87			2.0X10^-1	5.4	2.0X10^-1	5.4	1.0X10⁶	2.8X10⁷
La-137	Lanthanum (57)		3.0X10¹	8.1X10²	6.0	1.6X10²	1.6X10^-3	4.4X10^-2
La-140			4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	2.1X10⁴	5.6X10⁵
Lu-172	Lutetium (71)		6.0X10^-1	1.6X10¹	6.0X10^-1	1.6X10¹	4.2X10³	1.1X10⁵
Lu-173			8.0	2.2X10²	8.0	2.2X10²	5.6X10¹	1.5X10³
Lu-174			9.0	2.4X10²	9.0	2.4X10²	2.3X10¹	6.2X10²
Lu-174m			2.0X10¹	5.4X10²	1.0X10¹	2.7X10²	2.0X10²	5.3X10³
Lu-177			3.0X10¹	8.1X10²	7.0X10^-1	1.9X10¹	4.1X10³	1.1X10⁵
Mg-28 (a)	Magnesium (12)		3.0X10^-1	8.1	3.0X10^-1	8.1	2.0X10⁵	5.4X10⁶
Mn-52	Manganese (25)		3.0X10^-1	8.1	3.0X10^-1	8.1	1.6X10⁴	4.4X10⁵
Mn-53			Unlimited	Unlimited	Unlimited	Unlimited	6.8X10^-5	1.8X10^-3
Mn-54			1.0	2.7X10¹	1.0	2.7X10¹	2.9X10²	7.7X10³
Mn-56			3.0X10^-1	8.1	3.0X10^-1	8.1	8.0X10⁵	2.2X10⁷
Mo-93	Molybdenum (42)		4.0X10¹	1.1X10³	2.0X10¹	5.4X10²	4.1X10^-2	1.1
Mo-99 (a) (h)			1.0	2.7X10¹	6.0X10^-1	1.6X10¹	1.8X10⁴	4.8X10⁵
N-13	Nitrogen (7)		9.0X10^-1	2.4X10¹	6.0X10^-1	1.6X10¹	5.4X107	1.5X10⁹
Na-22	Sodium (11)		5.0X10^-1	1.4X10¹	5.0X10^-1	1.4X10¹	2.3X10²	6.3X10³
Na-24			2.0X10^-1	5.4	2.0X10^-1	5.4	3.2X10⁵	8.7X10⁶
Nb-93m	Niobium (41)		4.0X10¹	1.1X10³	3.0X10¹	8.1X10²	8.8	2.4X10²
Nb-94			7.0X10^-1	1.9X10¹	7.0X10^-1	1.9X10¹	6.9X10^-3	1.9X10^-1
Nb-95			1.0	2.7X10¹	1.0	2.7X10¹	1.5X10³	3.9X10⁴
Nb-97			9.0X10^-1	2.4X10¹	6.0X10^-1	1.6X10¹	9.9X10⁵	2.7X10⁷
Nd-147	Neodymium (60)		6.0	1.6X10²	6.0X10^-1	1.6X10¹	3.0X10³	8.1X10⁴
Nd-149			6.0X10^-1	1.6X10¹	5.0X10^-1	1.4X10¹	4.5X10⁵	1.2X1⁰⁷
Ni-59	Nickel (28)		Unlimited	Unlimited	Unlimited	Unlimited	3.0X10^-3	8.0X10^-2
Ni-63			4.0X10¹	1.1X10³	3.0X10¹	8.1X10²	2.1	5.7X10¹
Ni-65			4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	7.1X10⁵	1.9X10⁷
Np-235	Neptunium (93)		4.0X10¹	1.1X10³	4.0X10¹	1.1X10³	5.2X10¹	1.4X10³
Np-236 (short-lived)			2.0X10¹	5.4X10²	2.0	5.4X10¹	4.7X10^-4	1.3X10^-2
Np-236 (long-lived)			9.0X100	2.4X10²	2.0X10^-2	5.4X10^-1	4.7X10^-4	1.3X10^-2
Np-237			2.0X10¹	5.4X10²	2.0X10^-3	5.4X10^-2	2.6X10^-5	7.1X10^-4
Np-239			7.0	1.9X10²	4.0X10^-1	1.1X10¹	8.6X10³	2.3X10⁵
Os-185	Osmium (76)		1.0	2.7X10¹	1.0	2.7X10¹	2.8X10²	7.5X10³
Os-191			1.0X10¹	2.7X10²	2.0	5.4X10¹	1.6X10³	4.4X10⁴
Os-191m			4.0X10¹	1.1X10³	3.0X10¹	8.1X10²	4.6X10⁴	1.3X10⁶
Os-193			2.0	5.4X10¹	6.0X10^-1	1.6X10¹	2.0X10⁴	5.3X10⁵
Os-194 (a)			3.0X10^-1	8.1	3.0X10^-1	8.1	1.1X10¹	3.1X10²
P-32	Phosphorus (15)		5.0X10^-1	1.4X10¹	5.0X10^-1	1.4X10¹	1.1X10⁴	2.9X10⁵
P-33			4.0X10¹	1.1X10³	1.0	2.7X10¹	5.8X10³	1.6X10⁵
Pa-230 (a)	Protactinium (91)		2.0	5.4X10¹	7.0X10^-2	1.9	1.2X10³	3.3X10⁴
Pa-231			4.0	1.1X10²	4.0X10^-4	1.1X10^-2	1.7X10^-3	4.7X10^-2
Pa-233			5.0	1.4X10²	7.0X10^-1	1.9X10¹	7.7X10²	2.1X10⁴
Pb-201	Lead (82)		1.0	2.7X10¹	1.0	2.7X10¹	6.2X10⁴	1.7X10⁶
Pb-202			4.0X10¹	1.1X10³	2.0X10¹	5.4X10²	1.2X10^-4	3.4X10^-3
Pb-203			4.0	1.1X10²	3.0	8.1X10¹	1.1X10⁴	3.0X10⁵
Pb-205			Unlimited	Unlimited	Unlimited	Unlimited	4.5X10^-6	1.2X10^-4
Pb-210 (a)			1.0	2.7X10¹	5.0X10^-2	1.4	2.8	7.6X10¹
Pb-212 (a)			7.0X10^-1	1.9X10¹	2.0X10^-1	5.4	5.1X10⁴	1.4X10⁶
Pd-103 (a)	Palladium (46)		4.0X10¹	1.1X10³	4.0X10¹	1.1X10³	2.8X10³	7.5X10⁴
Pd-107			Unlimited	Unlimited	Unlimited	Unlimited	1.9X10^-5	5.1X10^-4
Pd-109			2.0	5.4X10¹	5.0X10^-1	1.4X10¹	7.9X10⁴	2.1X10⁶
Pm-143	Promethium (61)		3.0	8.1X10¹	3.0	8.1X10¹	1.3X10²	3.4X10³
Pm-144			7.0X10^-1	1.9X10¹	7.0X10^-1	1.9X10¹	9.2X10¹	2.5X10³
Pm-145			3.0X10¹	8.1X10²	1.0X10¹	2.7X10²	5.2	1.4X10²
Pm-147			4.0X10¹	1.1X10³	2.0	5.4X10¹	3.4X10¹	9.3X10²
Pm-148m (a)			8.0X10^-1	2.2X10¹	7.0X10^-1	1.9X10¹	7.9X10²	2.1X10⁴
Pm-149			2.0	5.4X10¹	6.0X10^-1	1.6X10¹	1.5X10⁴	4.0X10⁵
Pm-151			2.0	5.4X10¹	6.0X10^-1	1.6X10¹	2.7X10⁴	7.3X10⁵
Po-210	Polonium (84)		4.0X10¹	1.1X10³	2.0X10^-2	5.4X10^-1	1.7X10²	4.5X10³
Pr-142	Praseodymium (59)		4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	4.3X10⁴	1.2X10⁶
Pr-143			3.0	8.1X10¹	6.0X10^-1	1.6X10¹	2.5X10³	6.7X10⁴
Pt-188 (a)	Platinum (78)		1.0	2.7X10¹	8.0X10^-1	2.2X10¹	2.5X10³	6.8X10⁴
Pt-191			4.0	1.1X10²	3.0	8.1X10¹	8.7X10³	2.4X10⁵
Pt-193			4.0X10¹	1.1X10³	4.0X10¹	1.1X10³	1.4	3.7X10¹
Pt-193m			4.0X10¹	1.1X10³	5.0X10^-1	1.4X10¹	5.8X10³	1.6X10⁵
Pt-195m			1.0X10¹	2.7X10²	5.0X10^-1	1.4X10¹	6.2X10³	1.7X10⁵
Pt-197			2.0X10¹	5.4X10²	6.0X10^-1	1.6X10¹	3.2X10⁴	8.7X10⁵
Pt-197m			1.0X10¹	2.7X10²	6.0X10^-1	1.6X10¹	3.7X10⁵	1.0X10⁷
Pu-236	Plutonium (94)		3.0X10¹	8.1X10²	3.0X10^-3	8.1X10^-2	2.0X10¹	5.3X10²
Pu-237			2.0X10¹	5.4X10²	2.0X10¹	5.4X10²	4.5X10²	1.2X10⁴
Pu-238			1.0X10¹	2.7X10²	1.0X10^-3	2.7X10^-2	6.3X10^-1	1.7X10¹
Pu-239			1.0X10¹	2.7X10²	1.0X10^-3	2.7X10^-2	2.3X10^-3	6.2X10^-2
Pu-240			1.0X10¹	2.7X10²	1.0X10^-3	2.7X10^-2	8.4X10^-3	2.3X10^-1
Pu-241 (a)			4.0X10¹	1.1X10³	6.0X10^-2	1.6	3.8	1.0X10²
Pu-242			1.0X10¹	2.7X10²	1.0X10^-3	2.7X10^-2	1.5X10^-4	3.9X10^-3
Pu-244 (a)			4.0X10^-1	1.1X10¹	1.0X10^-3	2.7X10^-2	6.7X10^-7	1.8X10^-5
Ra-223 (a)	Radium (88)		4.0X10^-1	1.1X10¹	7.0X10^-3	1.9X10^-1	1.9X10³	5.1X10⁴
Ra-224 (a)			4.0X10^-1	1.1X10¹	2.0X10^-2	5.4X10^-1	5.9X10³	1.6X10⁵
Ra-225 (a)			2.0X10^-1	5.4	4.0X10^-3	1.1X10^-1	1.5X10³	3.9X10⁴
Ra-226 (a)			2.0X10^-1	5.4	3.0X10^-3	8.1X10^-2	3.7X10^-2	1.0
Ra-228 (a)			6.0X10^-1	1.6X10¹	2.0X10^-2	5.4X10^-1	1.0X10¹	2.7X10²
Rb-81	Rubidium (37)		2.0	5.4X10¹	8.0X10^-1	2.2X10¹	3.1X10⁵	8.4X10⁶
Rb-83 (a)			2.0	5.4X10¹	2.0	5.4X10¹	6.8X10²	1.8X10⁴
Rb-84			1.0	2.7X10¹	1.0	2.7X10¹	1.8X10³	4.7X10⁴
Rb-86			5.0X10^-1	1.4X10¹	5.0X10^-1	1.4X10¹	3.0X10³	8.1X10⁴
Rb-87			Unlimited	Unlimited	Unlimited	Unlimited	3.2X10^-9	8.6X10^-8
Rb(nat)			Unlimited	Unlimited	Unlimited	Unlimited	6.7X10⁶	1.8X10⁸
Re-184	Rhenium (75)		1.0	2.7X10¹	1.0	2.7X10¹	6.9X10²	1.9X10⁴
Re-184m			3.0	8.1X10¹	1.0	2.7X10¹	1.6X10²	4.3X10³
Re-186			2.0	5.4X10¹	6.0X10^-1	1.6X10¹	6.9X10³	1.9X10⁵
Re-187			Unlimited	Unlimited	Unlimited	Unlimited	1.4X10^-9	3.8X10^-8
Re-188			4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	3.6X10⁴	9.8X10⁵
Re-189 (a)			3.0	8.1X10¹	6.0X10^-1	1.6X10¹	2.5X10⁴	6.8X10⁵
Re(nat)			Unlimited	Unlimited	Unlimited	Unlimited	0.0	2.4X10^-8
Rh-99	Rhodium (45)		2.0	5.4X10¹	2.0	5.4X10¹	3.0X10³	8.2X10⁴
Rh-101			4.0	1.1X10²	3.0	8.1X10¹	4.1X10¹	1.1X10³
Rh-102			5.0X10^-1	1.4X10¹	5.0X10^-1	1.4X10¹	4.5X10¹	1.2X10³
Rh-102m			2.0	5.4X10¹	2.0	5.4X10¹	2.3X10²	6.2X10³
Rh-103m			4.0X10¹	1.1X10³	4.0X10¹	1.1X10³	1.2X10⁶	3.3X10⁷
Rh-105			1.0X10¹	2.7X10²	8.0X10^-1	2.2X10¹	3.1X10⁴	8.4X10⁵
Rn-222 (a)	Radon (86)		3.0X10^-1	8.1	4.0X10^-3	1.1X10^-1	5.7X10³	1.5X10⁵
Ru-97	Ruthenium (44)		5.0	1.4X10²	5.0	1.4X10²	1.7X10⁴	4.6X10⁵
Ru-103 (a)			2.0	5.4X10¹	2.0	5.4X10¹	1.2X10³	3.2X10⁴
Ru-105			1.0	2.7X10¹	6.0X10^-1	1.6X10¹	2.5X10⁵	6.7X10⁶
Ru-106 (a)			2.0X10^-1	5.4	2.0X10^-1	5.4	1.2X10²	3.3X10³
S-35	Sulphur (16)		4.0X10¹	1.1X10³	3.0	8.1X10¹	1.6X10³	4.3X10⁴
Sb-122	Antimony (51)		4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	1.5X10⁴	4.0X10⁵
Sb-124			6.0X10^-1	1.6X10¹	6.0X10^-1	1.6X10¹	6.5X10²	1.7X10⁴
Sb-125			2.0	5.4X10¹	1.0	2.7X10¹	3.9X10¹	1.0X10³
Sb-126			4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	3.1X10³	8.4X10⁴
Sc-44	Scandium (21)		5.0X10^-1	1.4X10¹	5.0X10^-1	1.4X10¹	6.7X10⁵	1.8X10⁷
Sc-46			5.0X10^-1	1.4X10¹	5.0X10^-1	1.4X10¹	1.3X10³	3.4X10⁴
Sc-47			1.0X10¹	2.7X10²	7.0X10^-1	1.9X10¹	3.1X10⁴	8.3X10⁵
Sc-48			3.0X10^-1	8.1	3.0X10^-1	8.1	5.5X10⁴	1.5X10⁶
Se-75	Selenium (34)		3.0	8.1X10¹	3.0	8.1X10¹	5.4X10²	1.5X10⁴
Se-79			4.0X10¹	1.1X10³	2.0	5.4X10¹	2.6X10^-3	7.0X10^-2
Si-31	Silicon (14)		6.0X10^-1	1.6X10¹	6.0X10^-1	1.6X10¹	1.4X10⁶	3.9X10⁷
Si-32			4.0X10¹	1.1X10³	5.0X10^-1	1.4X10¹	3.9	1.1X10²
Sm-145	Samarium (62)		1.0X10¹	2.7X10²	1.0X10¹	2.7X10²	9.8X10¹	2.6X10³
Sm-147			Unlimited	Unlimited	Unlimited	Unlimited	8.5X10^-10	2.3X10^-8
Sm-151			4.0X10¹	1.1X10³	1.0X10¹	2.7X10²	9.7X10^-1	2.6X10¹
Sm-153			9.0	2.4X10²	6.0X10^-1	1.6X10¹	1.6X10⁴	4.4X10⁵
Sn-113 (a)	Tin (50)		4.0	1.1X10²	2.0	5.4X10¹	3.7X10²	1.0X10⁴
Sn-117m			7.0	1.9X10²	4.0X10^-1	1.1X10¹	3.0X10³	8.2X10⁴
Sn-119m			4.0X10¹	1.1X10³	3.0X10¹	8.1X10²	1.4X10²	3.7X10³
Sn-121m (a)			4.0X10¹	1.1X10³	9.0X10^-1	2.4X10¹	2.0	5.4X10¹
Sn-123			8.0X10^-1	2.2X10¹	6.0X10^-1	1.6X10¹	3.0X10²	8.2X10³
Sn-125			4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	4.0X10³	1.1X10⁵
Sn-126 (a)			6.0X10^-1	1.6X10¹	4.0X10^-1	1.1X10¹	1.0X10^-3	2.8X10^-2
Sr-82 (a)	Strontium (38)		2.0X10^-1	5.4	2.0X10^-1	5.4	2.3X10³	6.2X10⁴
Sr-85			2.0	5.4X10¹	2.0	5.4X10¹	8.8X10²	2.4X10⁴
Sr-85m			5.0	1.4X10²	5.0	1.4X10²	1.2X10⁶	3.3X10⁷
Sr-87m			3.0	8.1X10¹	3.0	8.1X10¹	4.8X10⁵	1.3X10⁷
Sr-89			6.0X10^-1	1.6X10¹	6.0X10^-1	1.6X10¹	1.1X10³	2.9X10⁴
Sr-90 (a)			3.0X10^-1	8.1	3.0X10^-1	8.1	5.1	1.4X10²
Sr-91 (a)			3.0X10^-1	8.1	3.0X10^-1	8.1	1.3X10⁵	3.6X10⁶
Sr-92 (a)			1.0	2.7X10¹	3.0X10^-1	8.1	4.7X10⁵	1.3X10⁷
T(H-3)	Tritium (1)		4.0X10¹	1.1X10³	4.0X10¹	1.1X10³	3.6X10²	9.7X10³
Ta-178 (long-lived)	Tantalum (73)		1.0	2.7X10¹	8.0X10^-1	2.2X10¹	4.2X10⁶	1.1X10⁸
Ta-179			3.0X10¹	8.1X10²	3.0X10¹	8.1X10²	4.1X10¹	1.1X10³
Ta-182			9.0X10^-1	2.4X10¹	5.0X10^-1	1.4X10¹	2.3X10²	6.2X10³
Tb-157	Terbium (65)		4.0X10¹	1.1X10³	4.0X10¹	1.1X10³	5.6X10^-1	1.5X10¹
Tb-158			1.0	2.7X10¹	1.0	2.7X10¹	5.6X10^-1	1.5X10¹
Tb-160			1.0	2.7X10¹	6.0X10^-1	1.6X10¹	4.2X10²	1.1X10⁴
Tc-95m (a)	Technetium (43)		2.0	5.4X10¹	2.0	5.4X10¹	8.3X10²	2.2X10⁴
Tc-96			4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	1.2X10⁴	3.2X10⁵
Tc-96m (a)			4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	1.4X10⁶	3.8X10⁷
Tc-97			Unlimited	Unlimited	Unlimited	Unlimited	5.2X10^-5	1.4X10^-3
Tc-97m			4.0X10¹	1.1X10³	1.0	2.7X10¹	5.6X10²	1.5X10⁴
Tc-98			8.0X10^-1	2.2X10¹	7.0X10^-1	1.9X10¹	3.2X10^-5	8.7X10^-4
Tc-99			4.0X10¹	1.1X10³	9.0X10^-1	2.4X10¹	6.3X10^-4	1.7X10^-2
Tc-99m			1.0X10¹	2.7X10²	4.0	1.1X10²	1.9X10⁵	5.3X10⁶
Te-121	Tellurium (52)		2.0	5.4X10¹	2.0	5.4X10¹	2.4X10³	6.4X10⁴
Te-121m			5.0	1.4X10²	3.0	8.1X10¹	2.6X10²	7.0X10³
Te-123m			8.0	2.2X10²	1.0	2.7X10¹	3.3X10²	8.9X10³
Te-125m			2.0X10¹	5.4X10²	9.0X10^-1	2.4X10¹	6.7X10²	1.8X10⁴
Te-127			2.0X10¹	5.4X10²	7.0X10^-1	1.9X10¹	9.8X10⁴	2.6X10⁶
Te-127m (a)			2.0X10¹	5.4X10²	5.0X10^-1	1.4X10¹	3.5X10²	9.4X10³
Te-129			7.0X10^-1	1.9X10¹	6.0X10^-1	1.6X10¹	7.7X10⁵	2.1X10⁷
Te-129m (a)			8.0X10^-1	2.2X10¹	4.0X10^-1	1.1X10¹	1.1X10³	3.0X10⁴
Te-131m (a)			7.0X10^-1	1.9X10¹	5.0X10^-1	1.4X10¹	3.0X10⁴	8.0X10⁵
Te-132 (a)			5.0X10^-1	1.4X10¹	4.0X10^-1	1.1X10¹	1.1X10⁴	3.0X10⁵
Th-227	Thorium (90)		1.0X10¹	2.7X10²	5.0X10^-3	1.4X10^-1	1.1X10³	3.1X10⁴
Th-228 (a)			5.0X10^-1	1.4X10¹	1.0X10^-3	2.7X10^-2	3.0X10¹	8.2X10²
Th-229			5.0	1.4X10²	5.0X10^-4	1.4X10^-2	7.9X10^-3	2.1X10^-1
Th-230			1.0X10¹	2.7X10²	1.0X10^-3	2.7X10^-2	7.6X10^-4	2.1X10^-2
Th-231			4.0X10¹	1.1X10³	2.0X10^-2	5.4X10^-1	2.0X10⁴	5.3X10⁵
Th-232			Unlimited	Unlimited	Unlimited	Unlimited	4.0X10^-9	1.1X10^-7
Th-234 (a)			3.0X10^-1	8.1	3.0X10^-1	8.1	8.6X10²	2.3X10⁴
Th(nat)			Unlimited	Unlimited	Unlimited	Unlimited	8.1X10^-9	2.2X10^-7
Ti-44 (a)	Titanium (22)		5.0X10^-1	1.4X10¹	4.0X10^-1	1.1X10¹	6.4	1.7X10²
Tl-200	Thallium (81)		9.0X10^-1	2.4X10¹	9.0X10^-1	2.4X10¹	2.2X10⁴	6.0X10⁵
Tl-201			1.0X10¹	2.7X10²	4.0	1.1X10²	7.9X10³	2.1X10⁵
Tl-202			2.0	5.4X10¹	2.0	5.4X10¹	2.0X10³	5.3X10⁴
Tl-204			1.0X10¹	2.7X10²	7.0X10^-1	1.9X10¹	1.7X10¹	4.6X10²
Tm-167	Thulium (69)		7.0	1.9X10²	8.0X10^-1	2.2X10¹	3.1X10³	8.5X10⁴
Tm-170			3.0	8.1X10¹	6.0X10^-1	1.6X10¹	2.2X10²	6.0X10³
Tm-171			4.0X10¹	1.1X10³	4.0X10¹	1.1X10³	4.0X10¹	1.1X10³
U-230 (fast lung absorption) (a)(d)	Uranium (92)		4.0X10¹	1.1X10³	1.0X10^-1	2.7	1.0X10³	2.7X10⁴
U-230 (medium lung absorption) (a)(e)			4.0X10¹	1.1X10³	4.0X10^-3	1.1X10^-1	1.0X10³	2.7X10⁴
U-230 (slow lung absorption) (a)(f)			3.0X10¹	8.1X10²	3.0X10^-3	8.1X10^-2	1.0X10³	2.7X10⁴
U-232 (fast lung absorption) (d)			4.0X10¹	1.1X10³	1.0X10^-2	2.7X10^-1	8.3X10^-1	2.2X10¹
U-232 (medium lung absorption) (e)			4.0X10¹	1.1X10³	7.0X10^-3	1.9X10^-1	8.3X10^-1	2.2X10¹
U-232 (slow lung absorption) (f)			1.0X10¹	2.7X10²	1.0X10^-3	2.7X10^-2	8.3X10^-1	2.2X10¹
U-233 (fast lung absorption) (d)			4.0X10¹	1.1X10³	9.0X10^-2	2.4	3.6X10^-4	9.7X10^-3
U-233 (medium lung absorption) (e)			4.0X10¹	1.1X10³	2.0X10^-2	5.4X10^-1	3.6X10^-4	9.7X10^-3
U-233 (slow lung absorption) (f)			4.0X10¹	1.1X10³	6.0X10^-3	1.6X10^-1	3.6X10^-4	9.7X10^-3
U-234 (fast lung absorption) (d)			4.0X10¹	1.1X10³	9.0X10^-2	2.4	2.3X10^-4	6.2X10^-3
U-234 (medium lung absorption) (e)			4.0X10¹	1.1X10³	2.0X10^-2	5.4X10^-1	2.3X10^-4	6.2X10^-3
U-234 (slow lung absorption) (f)			4.0X10¹	1.1X10³	6.0X10^-3	1.6X10^-1	2.3X10^-4	6.2X10^-3
U-235 (all lung absorption types) (a),(d),(e),(f)			Unlimited	Unlimited	Unlimited	Unlimited	8.0X10^-8	2.2X10^-6
U-236 (fast lung absorption) (d)			Unlimited	Unlimited	Unlimited	Unlimited	2.4X10^-6	6.5X10^-5
U-236 (medium lung absorption) (e)			4.0X10¹	1.1X10³	2.0X10^-2	5.4X10^-1	2.4X10^-6	6.5X10^-5
U-236 (slow lung absorption) (f)			4.0X10¹	1.1X10³	6.0X10^-3	1.6X10^-1	2.4X10^-6	6.5X10^-5
U-238 (all lung absorption types) (d),(e),(f)			Unlimited	Unlimited	Unlimited	Unlimited	1.2X10^-8	3.4X10^-7
U (nat)			Unlimited	Unlimited	Unlimited	Unlimited	2.6X10^-8	7.1X10^-7
U (enriched to 20% or less) (g)			Unlimited	Unlimited	Unlimited	Unlimited	See Table A-4	See Table A-4
U (dep)			Unlimited	Unlimited	Unlimited	Unlimited	See Table A-4	See Table A-3
V-48	Vanadium (23)		4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	6.3X10³	1.7X10⁵
V-49			4.0X10¹	1.1X10³	4.0X10¹	1.1X10³	3.0X10²	8.1X10³
W-178 (a)	Tungsten (74)		9.0	2.4X10²	5.0	1.4X10²	1.3X10³	3.4X10⁴
W-181			3.0X10¹	8.1X10²	3.0X10¹	8.1X10²	2.2X10²	6.0X10³
W-185			4.0X10¹	1.1X10³	8.0X10^-1	2.2X10¹	3.5X10²	9.4X10³
W-187			2.0	5.4X10¹	6.0X10^-1	1.6X10¹	2.6X10⁴	7.0X10⁵
W-188 (a)			4.0X10^-1	1.1X10¹	3.0X10^-1	8.1	3.7X10²	1.0X10⁴
Xe-122 (a)	Xenon (54)		4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	4.8X10⁴	1.3X10⁶
Xe-123			2.0	5.4X10¹	7.0X10^-1	1.9X10¹	4.4X10⁵	1.2X10
Xe-127			4.0	1.1X10²	2.0	5.4X10¹	1.0X10³	2.8X10⁴
Xe-131m			4.0X10¹	1.1X10³	4.0X10¹	1.1X10³	3.1X10³	8.4X10⁴
Xe-133			2.0X10¹	5.4X10²	1.0X10¹	2.7X10²	6.9X10³	1.9X10⁵
Xe-135			3.0	8.1X10¹	2.0	5.4X10¹	9.5X10⁴	2.6X10⁶
Y-87 (a)	Yttrium (39)		1.0	2.7X10¹	1.0	2.7X10¹	1.7X10⁴	4.5X10⁵
Y-88			4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	5.2X10²	1.4X10⁴
Y-90			3.0X10^-1	8.1	3.0X10^-1	8.1	2.0X10⁴	5.4X10⁵
Y-91			6.0X10^-1	1.6X10¹	6.0X10^-1	1.6X10¹	9.1X10²	2.5X10⁴
Y-91m			2.0	5.4X10¹	2.0	5.4X10¹	1.5X10⁶	4.2X10
Y-92			2.0X10^-1	5.4	2.0X10^-1	5.4	3.6X10⁵	9.6X10⁶
Y-93			3.0X10^-1	8.1	3.0X10^-1	8.1	1.2X10⁵	3.3X10⁶
Yb-169	Ytterbium (70)		4.0	1.1X10²	1.0	2.7X10¹	8.9X10²	2.4X10⁴
Yb-175			3.0X10¹	8.1X10²	9.0X10^-1	2.4X10¹	6.6X10³	1.8X10⁵
Zn-65	Zinc (30)		2.0	5.4X10¹	2.0	5.4X10¹	3.0X10²	8.2X10³
Zn-69			3.0	8.1X10¹	6.0X10^-1	1.6X10¹	1.8X10⁶	4.9X10
Zn-69m (a)			3.0	8.1X10¹	6.0X10^-1	1.6X10¹	1.2X10⁵	3.3X10⁶
Zr-88	Zirconium (40)		3.0	8.1X10¹	3.0	8.1X10¹	6.6X10²	1.8X10⁴
Zr-93			Unlimited	Unlimited	Unlimited	Unlimited	9.3X10	2.5X10
Zr-95 (a)			2.0	5.4X10¹	8.0X10^-1	2.2X10¹	7.9X10²	2.1X10⁴
Zr-97 (a)			4.0X10^-1	1.1X10¹	4.0X10^-1	1.1X10¹	7.1X10⁴	1.9X10⁶
^aA₁ and/or A₂ values include contributions from daughter nuclides with half-lives less than 10 days, as listed in the following:
Mg-28 Ca-47 Ti-44 Fe-52 Fe-60 Zn-69m Ge-68 Rb-83 Sr-82 Sr-90 Sr-91 Sr-92 Y-87 Zr-95 Zr-97 Mo-99 Tc-95m Tc-96m Ru-103 Ru-106 Pd-103 Ag-108m Ag-110m Cd-115 In-114m Sn-113 Sn-121m Sn-126 Te-127m Te-129m Te-131m Te-132 I-135 Xe-122 Cs-137 Ba-131 Ba-140 Ce-144 Pm-148m Gd-146 Dy-166 Hf-172 W-178 W-188 Re-189 Os-194 Ir-189 Pt-188 Hg-194 Hg-195m Pb-210 Pb-212 Bi-210m Bi-212 At-211 Rn-222 Ra-223 Ra-224 Ra-225 Ra-228 Ac-225 Ac-227 Th-228 Th-234 Pa-230 U-230 U-235 Pu-241 Pu-244 Am-242m Am-243 Cm-247 Bk-249 Cf-253		Al-28 Sc-47 Sc-44 Mn-52m Co-60m Zn-69 Ga-68 Kr-83m Rb-82 Y-90 Y-91m Y-92 Sr-87m Nb-95m Nb-97m, Nb-97 Tc-99m Tc-95 Tc-96 Rh-103m Rh-106 Rh-103m Ag-108 Ag-110 In-115m In-114 In-113m Sn-121 Sb-126m Te-127 Te-129 Te-131 I-132 Xe-135m I-122 Ba-137m Cs-131 La-140 Pr-144m, Pr-144 Pm-148 Eu-146 Ho-166 Lu-172 Ta-178 Re-188 Os-189m Ir-194 Os-189m Ir-188 Au-194 Hg-195 Bi-210 Bi-212, Po-212, TI-208 Tl-206 Tl-208, Po-212 Po-211 Po-218, Pb-214, At-218, Bi-214, Po-214 Rn-219, Po-215, Pb-211, Bi-211, Po-211, Tl-207 Rn-220, Po-216, Pb-212, Bi-212, Tl-208, Po-212 Ac-225, Fr-221, At-217, Bi-213, Tl-209, Po-213, Pb-209 Ac-228 Fr-221, At-217, Bi-213, Po-213, Pb-209, TI-209 Fr-223 Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208, Po-212 Pa-234m, Pa-234 Ac-226, Th-226, Fr-222, Ra-222, Rn-218, Po-214 Th-226, Ra-222, Rn-218, Po-214 Th-231 U-237 U-240, Np-240m Am-242, Np-238 Np-239 Pu-243 Am-245 Cm-249
^bThe values of A₁ and A₂ in Curies (Ci) are approximate and for information only; the regulatory standard units are terabecquerels (TBq). ^cThe 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. ^dThese 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. ^eThese 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. ^fThese values apply to all compounds of uranium other than those specified in notes d and e of this table. ^gThese values apply to unirradiated uranium only. ^h A₂ = 0.74 TBq (20 Ci) for Mo-99 for domestic use.

G. Table 2. Exempt Material Activity Concentrations and Exempt Consignment Activity Limits for Radionuclides.

Symbol of radionuclide	Element and atomic number	Activity concentration for exempt material (Bq/g)	Activity concentration for exempt material (Ci/g)	Activity limit for exempt consignment (Bq)	Activity limit for exempt consignment (Ci)
Ac-225	Actinium (89)	1.0X10¹	2.7X10^-10	1.0X10⁴	2.7X10^-7
Ac-227		1.0X10^-1	2.7X10^-12	1.0X10³	2.7X10^-8
Ac-228		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Ag-105	Silver (47)	1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Ag-108m (b)		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Ag-110m		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Ag-111		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
Al-26	Aluminum (13)	1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Am-241	Americium (95)	1.0	2.7X10^-11	1.0X10⁴	2.7X10^-7
Am-242m (b)		1.0	2.7X10^-11	1.0X10⁴	2.7X10^-7
Am-243 (b)		1.0	2.7X10^-11	1.0X10³	2.7X10^-8
Ar-37	Argon (18)	1.0X10⁶	2.7X10^-5	1.0X10⁸	2.7X10^-3
Ar-39		1.0X10⁷	2.7X10^-4	1.0X10⁴	2.7X10^-7
Ar-41		1.0X10²	2.7X10^-9	1.0X10⁹	2.7X10^-2
As-72	Arsenic (33)	1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
As-73		1.0X10³	2.7X10^-8	1.0X10⁷	2.7X10^-4
As-74		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
As-76		1.0X10²	2.7X10^-9	1.0X10⁵	2.7X10^-6
As-77		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
At-211	Astatine (85)	1.0X10³	2.7X10^-8	1.0X10⁷	2.7X10^-4
Au-193	Gold (79)	1.0X10²	2.7X10^-9	1.0X10⁷	2.7X10^-4
Au-194		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Au-195		1.0X10²	2.7X10^-9	1.0X10⁷	2.7X10^-4
Au-198		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Au-199		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Ba-131	Barium (56)	1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Ba-133		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Ba-133m		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Ba-140 (b)		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Be-7	Beryllium (4)	1.0X10³	2.7X10^-8	1.0X10⁷	2.7X10^-4
Be-10		1.0X10⁴	2.7X10^-7	1.0X10⁶	2.7X10^-5
Bi-205	Bismuth (83)	1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Bi-206		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Bi-207		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Bi-210		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
Bi-210m		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Bi-212 (b)		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Bk-247	Berkelium (97)	1.0	2.7X10^-11	1.0X10⁴	2.7X10^-7
Bk-249		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
Br-76	Bromine (35)	1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Br-77		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Br-82		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
C-11	Carbon (6)	1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
C-14		1.0X10⁴	2.7X10^-7	1.0X10⁷	2.7X10^-4
Ca-41	Calcium (20)	1.0X10⁵	2.7X10^-6	1.0X10⁷	2.7X10^-4
Ca-45		1.0X10⁴	2.7X10^-7	1.0X10⁷	2.7X10^-4
Ca-47		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Cd-109	Cadmium (48)	1.0X10⁴	2.7X10^-7	1.0X10⁶	2.7X10^-5
Cd-113m		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
Cd-115		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Cd-115m		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
Ce-139	Cerium (58)	1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Ce-141		1.0X10²	2.7X10^-9	1.0X10⁷	2.7X10^-4
Ce-143		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Ce-144 (b)		1.0X10²	2.7X10^-9	1.0X10⁵	2.7X10^-6
Cf-248	Californium (98)	1.0X10¹	2.7X10^-10	1.0X10⁴	2.7X10^-7
Cf-249		1.0	2.7X10^-11	1.0X10³	2.7X10^-8
Cf-250		1.0X10¹	2.7X10^-10	1.0X10⁴	2.7X10^-7
Cf-251		1.0	2.7X10^-11	1.0X10³	2.7X10^-8
Cf-252		1.0X10¹	2.7X10^-10	1.0X10⁴	2.7X10^-7
Cf-253		1.0X10²	2.7X10^-9	1.0X10⁵	2.7X10^-6
Cf-254		1.0	2.7X10^-11	1.0X10³	2.7X10^-8
Cl-36	Chlorine (17)	1.0X10⁴	2.7X10^-7	1.0X10⁶	2.7X10^-5
Cl-38		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Cm-240	Curium (96)	1.0X10²	2.7X10^-9	1.0X10⁵	2.7X10^-6
Cm-241		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Cm-242		1.0X10²	2.7X10^-9	1.0X10⁵	2.7X10^-6
Cm-243		1.0	2.7X10^-11	1.0X10⁴	2.7X10^-7
Cm-244		1.0X10¹	2.7X10^-10	1.0X10⁴	2.7X10^-7
Cm-245		1.0	2.7X10^-11	1.0X10³	2.7X10^-8
Cm-246		1.0	2.7X10^-11	1.0X10³	2.7X10^-8
Cm-247		1.0	2.7X10^-11	1.0X10⁴	2.7X10^-7
Cm-248		1.0	2.7X10^-11	1.0X10³	2.7X10^-8
Co-55	Cobalt (27)	1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Co-56		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Co-57		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Co-58		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Co-58m		1.0X10⁴	2.7X10^-7	1.0X10⁷	2.7X10^-4
Co-60		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Cr-51	Chromium (24)	1.0X10³	2.7X10^-8	1.0X10⁷	2.7X10^-4
Cs-129	Cesium (55)	1.0X10²	2.7X10^-9	1.0X10⁵	2.7X10^-6
Cs-131		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
Cs-132		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Cs-134		1.0X10¹	2.7X10^-10	1.0X10⁴	2.7X10^-7
Cs-134m		1.0X10³	2.7X10^-8	1.0X10⁵	2.7X10^-6
Cs-135		1.0X10⁴	2.7X10^-7	1.0X10⁷	2.7X10^-4
Cs-136		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Cs-137 (b)		1.0X10¹	2.7X10^-10	1.0X10⁴	2.7X10^-7
Cu-64	Copper (29)	1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Cu-67		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Dy-159	Dysprosium (66)	1.0X10³	2.7X10^-8	1.0X10⁷	2.7X10^-4
Dy-165		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
Dy-166		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
Er-169	Erbium (68)	1.0X10⁴	2.7X10^-7	1.0X10⁷	2.7X10^-4
Er-171		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Eu-147	Europium (63)	1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Eu-148		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Eu-149		1.0X10²	2.7X10^-9	1.0X10⁷	2.7X10^-4
Eu-150 (short lived)		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
Eu-150 (long lived)		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Eu-152		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Eu-152m		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Eu-154		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Eu-155		1.0X10²	2.7X10^-9	1.0X10⁷	2.7X10^-4
Eu-156		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
F-18	Fluorine (9)	1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Fe-52	Iron (26)	1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Fe-55		1.0X10⁴	2.7X10^-7	1.0X10⁶	2.7X10^-5
Fe-59		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Fe-60		1.0X10²	2.7X10^-9	1.0X10⁵	2.7X10^-6
Ga-67	Gallium (31)	1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Ga-68		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Ga-72		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Gd-146	Gadolinium (64)	1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Gd-148		1.0X10¹	2.7X10^-10	1.0X10⁴	2.7X10^-7
Gd-153		1.0X10²	2.7X10^-9	1.0X10⁷	2.7X10^-4
Gd-159		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
Ge-68	Germanium (32)	1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Ge-71		1.0X10⁴	2.7X10^-7	1.0X10⁸	2.7X10^-3
Ge-77		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Hf-172	Hafnium (72)	1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Hf-175		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Hf-181		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Hf-182		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Hg-194	Mercury (80)	1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Hg-195m		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Hg-197		1.0X10²	2.7X10^-9	1.0X10⁷	2.7X10^-4
Hg-197m		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Hg-203		1.0X10²	2.7X10^-9	1.0X10⁵	2.7X10^-6
Ho-166	Holmium (67)	1.0X10³	2.7X10^-8	1.0X10⁵	2.7X10^-6
Ho-166m		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
I-123	Iodine (53)	1.0X10²	2.7X10^-9	1.0X10⁷	2.7X10^-4
I-124		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
I-125		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
I-126		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
I-129		1.0X10²	2.7X10^-9	1.0X10⁵	2.7X10^-6
I-131		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
I-132		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
I-133		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
I-134		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
I-135		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
In-111	Indium (49)	1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
In-113m		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
In-114m		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
In-115m		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Ir-189	Iridium (77)	1.0X10²	2.7X10^-9	1.0X10⁷	2.7X10^-4
Ir-190		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Ir-192		1.0X10¹	2.7X10^-10	1.0X10⁴	2.7X10^-7
Ir-194		1.0X10²	2.7X10^-9	1.0X10⁵	2.7X10^-6
K-40	Potassium (19)	1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
K-42		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
K-43		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Kr-79	Krypton (36)	1.0X10³	2.7X10^-8	1.0X10⁵	2.7X10^-6
Kr-81		1.0X10⁴	2.7X10^-7	1.0X10⁷	2.7X10^-4
Kr-85		1.0X10⁵	2.7X10^-6	1.0X10⁴	2.7X10^-7
Kr-85m		1.0X10³	2.7X10^-8	1.0X10¹⁰	2.7X10^-1
Kr-87		1.0X10²	2.7X10^-9	1.0X10⁹	2.7X10^-2
La-137	Lanthanum (57)	1.0X10³	2.7X10^-8	1.0X10⁷	2.7X10^-4
La-140		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Lu-172	Lutetium (71)	1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Lu-173		1.0X10²	2.7X10^-9	1.0X10⁷	2.7X10^-4
Lu-174		1.0X10²	2.7X10^-9	1.0X10⁷	2.7X10^-4
Lu-174m		1.0X10²	2.7X10^-9	1.0X10⁷	2.7X10^-4
Lu-177		1.0X10³	2.7X10^-8	1.0X10⁷	2.7X10^-4
Mg-28	Magnesium (12)	1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Mn-52	Manganese (25)	1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Mn-53		1.0X10⁴	2.7X10^-7	1.0X10⁹	2.7X10^-2
Mn-54		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Mn-56		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Mo-93	Molybdenum (42)	1.0X10³	2.7X10^-8	1.0X10⁸	2.7X10^-3
Mo-99		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
N-13	Nitrogen (7)	1.0X10²	2.7X10^-9	1.0X10⁹	2.7X10^-2
Na-22	Sodium (11)	1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Na-24		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Nb-93m	Niobium (41)	1.0X10⁴	2.7X10^-7	1.0X10⁷	2.7X10^-4
Nb-94		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Nb-95		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Nb-97		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Nd-147	Neodymium (60)	1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Nd-149		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Ni-59	Nickel (28)	1.0X10⁴	2.7X10^-7	1.0X10⁸	2.7X10^-3
Ni-63		1.0X10⁵	2.7X10^-6	1.0X10⁸	2.7X10^-3
Ni-65		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Np-235	Neptunium (93)	1.0X10³	2.7X10^-8	1.0X10⁷	2.7X10^-4
Np-236 (short-lived)		1.0X10³	2.7X10^-8	1.0X10⁷	2.7X10^-4
Np-236 (long-lived)		1.0X10²	2.7X10^-9	1.0X10⁵	2.7X10^-6
Np-237 (b)		1.0	2.7X10^-11	1.0X10³	2.7X10^-8
Np-239		1.0X10²	2.7X10^-9	1.0X10⁷	2.7X10^-4
Os-185	Osmium (76)	1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Os-191		1.0X10²	2.7X10^-9	1.0X10⁷	2.7X10^-4
Os-191m		1.0X10³	2.7X10^-8	1.0X10⁷	2.7X10^-4
Os-193		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Os-194		1.0X10²	2.7X10^-9	1.0X10⁵	2.7X10^-6
P-32	Phosphorus (15)	1.0X10³	2.7X10^-8	1.0X10⁵	2.7X10^-6
P-33		1.0X10⁵	2.7X10^-6	1.0X10⁸	2.7X10^-3
Pa-230	Protactinium (91)	1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Pa-231		1.0	2.7X10^-11	1.0X10³	2.7X10^-8
Pa-233		1.0X10²	2.7X10^-9	1.0X10⁷	2.7X10^-4
Pb-201	Lead (82)	1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Pb-202		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
Pb-203		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Pb-205		1.0X10⁴	2.7X10^-7	1.0X10⁷	2.7X10^-4
Pb-210 (b)		1.0X10¹	2.7X10^-10	1.0X10⁴	2.7X10^-7
Pb-212 (b)		1.0X10¹	2.7X10^-10	1.0X10⁵	2.7X10^-6
Pd-103	Palladium (46)	1.0X10³	2.7X10^-8	1.0X10⁸	2.7X10^-3
Pd-107		1.0X10⁵	2.7X10^-6	1.0X10⁸	2.7X10^-3
Pd-109		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
Pm-143	Promethium (61)	1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Pm-144		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Pm-145		1.0X10³	2.7X10^-8	1.0X10⁷	2.7X10^-4
Pm-147		1.0X10⁴	2.7X10^-7	1.0X10⁷	2.7X10^-4
Pm-148m		1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Pm-149		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
Pm-151		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Po-210	Polonium (84)	1.0X10¹	2.7X10^-10	1.0X10⁴	2.7X10^-7
Pr-142	Praseodymium (59)	1.0X10²	2.7X10^-9	1.0X10⁵	2.7X10^-6
Pr-143		1.0X10⁴	2.7X10^-7	1.0X10⁶	2.7X10^-5
Pt-188	Platinum (78)	1.0X10¹	2.7X10^-10	1.0X10⁶	2.7X10^-5
Pt-191		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Pt-193		1.0X10⁴	2.7X10^-7	1.0X10⁷	2.7X10^-4
Pt-193m		1.0X10³	2.7X10^-8	1.0X10⁷	2.7X10^-4
Pt-195m		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Pt-197		1.0X10³	2.7X10^-8	1.0X10⁶	2.7X10^-5
Pt-197m		1.0X10²	2.7X10^-9	1.0X10⁶	2.7X10^-5
Pu-236	Plutonium (94)	1.0X10¹	2.7X10^-10	1.0X10⁴	2.7X10^-7
Pu-237

Virginia Law

Administrative Code

12VAC5-481-3770. Determination of A1 and A2.