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10 CFR 71, Appendix A to Part 71 - Determination of A1 and A2

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View PDF at GPO Pt. 71, App. A

Appendix A to Part 71—Determination of A1 and A2

I. Values of A1 and A2 for individual radionuclides, which are the bases for many activity limits elsewhere in these regulations, are given in Table A-1. 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.

II. a. For individual radionuclides whose identities are known, but which are not listed in Table A-1, the A1 and A2 values contained in Table A-3 may be used. Otherwise, the licensee shall obtain prior Commission approval of the A1 and A2 values for radionuclides not listed in Table A-1, before shipping the material.

b. For individual radionuclides whose identities are known, but which are not listed in Table A-2, the exempt material activity concentration and exempt consignment activity values contained in Table A-3 may be used. Otherwise, the licensee shall obtain prior Commission approval of the exempt material activity concentration and exempt consignment activity values for radionuclides not listed in Table A-2, before shipping the material.

c. The licensee shall submit requests for prior approval, described under paragraphs II.a. and II.b. of this Appendix, to the Commission, in accordance with § 71.1 of this part.

III. In the calculations of A1 and A2 for a radionuclide not in Table A-1, 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 and A2 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.

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

a. 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, and A1(i) is the A1 value for radionuclide I.

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

ΣB(i)/A2 (i) ≤ 1

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

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

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.

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

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.

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

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

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

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

V. 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, as appropriate, for the radionuclides in each group may be used in applying the formulas in paragraph IV. 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 for the alpha emitters and beta/gamma emitters.

**Table A-1—A1 and A2 Values For Radionuclides**
Symbol ofradionuclide	Element and atomic number	A1 (TBq)	A1 (Ci)b	A2 (TBq)	A2 (Ci)b	Specific activity
Symbol ofradionuclide	Element and atomic number	A1 (TBq)	A1 (Ci)b	A2 (TBq)	A2 (Ci)b	(TBq/g)	(Ci/g)
a A1 and/or A2 values include contributions from daughter nuclides with half-lives less than 10 days.
b The values of A1 and A2 in Curies (Ci) are approximate and for information only; the regulatory standard units are Terabecquerels (TBq), (see Appendix A to part 71—Determination of A1 and A2, Section I.). For radionuclide Bi-205, the specific activity is corrected to 1.5 × 10³ TBq/g. For radionuclide Cm-248, the specific activity is corrected to 1.6 × 10− ⁴ TBq/g. For radionuclide Eu-150 (long lived), the A1 value is corrected to 7.0 × 10− ¹ TBq. For radionuclide Te-132(a), the specific activity is corrected to 3.0 × 10⁵ Ci/g.
c The quantity 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 A1 = 0.1 TBq (2.7 Ci) and A2 = 0.001 TBq (0.027 Ci) for Cf-252 for domestic use.
i A2 = 0.74 TBq (20 Ci) for Mo-99 for domestic use.
Ac-225 (a)	Actinium (89)	8.0×10−1	2.2×10¹	6.0×10−3	1.6×10−1	2.1×10³	5.8×10⁴
Ac-227 (a)		9.0×10−1	2.4×10¹	9.0×10−5	2.4×10−3	2.7	7.2×10¹
Ac-228		6.0×10−1	1.6×10¹	5.0×10−1	1.4×10¹	8.4×10⁴	2.2×10⁶
Ag-105	Silver (47)	2.0	5.4×10¹	2.0	5.4×10¹	1.1×10³	3.0×10⁴
Ag-108m (a)		7.0×10−1	1.9×10¹	7.0×10−1	1.9×10¹	9.7×10−1	2.6×10¹
Ag-110m (a)		4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	1.8×10²	4.7×10³
Ag-111		2.0	5.4×10¹	6.0×10−1	1.6×10¹	5.8×10³	1.6×10⁵
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)	1.0×10¹	2.7×10²	1.0×10−3	2.7×10−2	1.3×10−1	3.4
Am-242m (a)		1.0×10¹	2.7×10²	1.0×10−3	2.7×10−2	3.6×10−1	1.0×10¹
Am-243 (a)		5.0	1.4×10²	1.0×10−3	2.7×10−2	7.4×10−3	2.0×10−1
Ar-37	Argon (18)	4.0×10¹	1.1×10³	4.0×10¹	1.1×10³	3.7×10³	9.9×10⁴
Ar-39		4.0×10¹	1.1×10³	2.0×10¹	5.4×10²	1.3	3.4×10¹
Ar-41		3.0×10−1	8.1	3.0×10−1	8.1	1.5×10⁶	4.2×10⁷
As-72	Arsenic (33)	3.0×10−1	8.1	3.0×10−1	8.1	6.2×10⁴	1.7×10⁶
As-73		4.0×10¹	1.1×10³	4.0×10¹	1.1×10³	8.2×10²	2.2×10⁴
As-74		1.0	2.7×10¹	9.0×10−1	2.4×10¹	3.7×10³	9.9×10⁴
As-76		3.0×10−1	8.1	3.0×10−1	8.1	5.8×10⁴	1.6×10⁶
As-77		2.0×10¹	5.4×10²	7.0×10−1	1.9×10¹	3.9×10⁴	1.0×10⁶
At-211 (a)	Astatine (85)	2.0×10¹	5.4×10²	5.0×10−1	1.4×10¹	7.6×10⁴	2.1×10⁶
Au-193	Gold (79)	7.0	1.9×10²	2.0	5.4×10¹	3.4×10⁴	9.2×10⁵
Au-194		1.0	2.7×10¹	1.0	2.7×10¹	1.5×10⁴	4.1×10⁵
Au-195		1.0×10¹	2.7×10²	6.0	1.6×10²	1.4×10²	3.7×10³
Au-198		1.0	2.7×10¹	6.0×10−1	1.6×10¹	9.0×10³	2.4×10⁵
Au-199		1.0×10¹	2.7×10²	6.0×10−1	1.6×10¹	7.7×10³	2.1×10⁵
Ba-131 (a)	Barium (56)	2.0	5.4×10¹	2.0	5.4×10¹	3.1×10³	8.4×10⁴
Ba-133		3.0	8.1×10¹	3.0	8.1×10¹	9.4	2.6×10²
Ba-133m		2.0×10¹	5.4×10²	6.0×10−1	1.6×10¹	2.2×10⁴	6.1×10⁵
Ba-140 (a)		5.0×10−1	1.4×10¹	3.0×10−1	8.1	2.7×10³	7.3×10⁴
Be-7	Beryllium (4)	2.0×10¹	5.4×10²	2.0×10¹	5.4×10²	1.3×10⁴	3.5×10⁵
Be-10		4.0×10¹	1.1×10³	6.0×10−1	1.6×10¹	8.3×10−4	2.2×10−2
Bi-205	Bismuth (83)	7.0×10−1	1.9×10¹	7.0×10−1	1.9×10¹	1.5×10−3	4.2×10⁴
Bi-206		3.0×10−1	8.1	3.0×10−1	8.1	3.8×10³	1.0×10⁵
Bi-207		7.0×10−1	1.9×10¹	7.0×10−1	1.9×10¹	1.9	5.2×10¹
Bi-210		1.0	2.7×10¹	6.0×10−1	1.6×10¹	4.6×10³	1.2×10⁵
Bi-210m (a)		6.0×10−1	1.6×10¹	2.0×10−2	5.4×10−1	2.1×10−5	5.7×10−4
Bi-212 (a)		7.0×10−1	1.9×10¹	6.0×10−1	1.6×10¹	5.4×10⁵	1.5×10⁷
Bk-247	Berkelium (97)	8.0	2.2×10²	8.0×10−4	2.2×10−2	3.8×10−2	1.0
Bk-249 (a)		4.0×10¹	1.1×10³	3.0×10−1	8.1	6.1×10¹	1.6×10³
Br-76	Bromine (35)	4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	9.4×10⁴	2.5×10⁶
Br-77		3.0	8.1×10¹	3.0	8.1×10¹	2.6×10⁴	7.1×10⁵
Br-82		4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	4.0×10⁴	1.1×10⁶
C-11	Carbon (6)	1.0	2.7×10¹	6.0×10−1	1.6×10¹	3.1×10⁷	8.4×10⁸
C-14		4.0×10¹	1.1×10³	3.0	8.1×10¹	1.6×10−1	4.5
Ca-41	Calcium (20)	Unlimited	Unlimited	Unlimited	Unlimited	3.1×10−3	8.5×10−2
Ca-45		4.0×10¹	1.1×10³	1.0	2.7×10¹	6.6×10²	1.8×10⁴
Ca-47 (a)		3.0	8.1×10¹	3.0×10−1	8.1	2.3×10⁴	6.1×10⁵
Cd-109	Cadmium (48)	3.0×10¹	8.1×10²	2.0	5.4×10¹	9.6×10¹	2.6×10³
Cd-113m		4.0×10¹	1.1×10³	5.0×10−1	1.4×10¹	8.3	2.2×10²
Cd-115 (a)		3.0	8.1×10¹	4.0×10−1	1.1×10¹	1.9×10⁴	5.1×10⁵
Cd-115m		5.0×10−1	1.4×10¹	5.0×10−1	1.4×10¹	9.4×10²	2.5×10⁴
Ce-139	Cerium (58)	7.0	1.9×10²	2.0	5.4×10¹	2.5×10²	6.8×10³
Ce-141		2.0×10¹	5.4×10²	6.0×10−1	1.6×10¹	1.1×10³	2.8×10⁴
Ce-143		9.0×10−1	2.4×10¹	6.0×10−1	1.6×10¹	2.5×10⁴	6.6×10⁵
Ce-144 (a)		2.0×10−1	5.4	2.0×10−1	5.4	1.2×10²	3.2×10³
Cf-248	Californium (98)	4.0×10¹	1.1×10³	6.0×10−3	1.6×10−1	5.8×10¹	1.6×10³
Cf-249		3.0	8.1×10¹	8.0×10−4	2.2×10−2	1.5×10−1	4.1
Cf-250		2.0×10¹	5.4×10²	2.0×10−3	5.4×10−2	4.0	1.1×10²
Cf-251		7.0	1.9×10²	7.0×10−4	1.9×10−2	5.9×10−2	1.6
Cf-252 (h)		5.0×10−2	1.4	3.0×10−3	8.1×10−2	2.0×10¹	5.4×10²
Cf-253 (a)		4.0×10¹	1.1×10³	4.0×10−2	1.1	1.1×10³	2.9×10⁴
Cf-254		1.0×10−3	2.7×10−2	1.0×10−3	2.7×10−2	3.1×10²	8.5×10³
Cl-36	Chlorine (17)	1.0×10¹	2.7×10²	6.0×10−1	1.6×10¹	1.2×10−3	3.3×10−2
Cl-38		2.0×10−1	5.4	2.0×10−1	5.4	4.9×10⁶	1.3×10⁸
Cm-240	Curium (96)	4.0×10¹	1.1×10³	2.0×10−2	5.4×10−1	7.5×10²	2.0×10⁴
Cm-241		2.0	5.4×10¹	1.0	2.7×10¹	6.1×10²	1.7×10⁴
Cm-242		4.0×10¹	1.1×10³	1.0×10−2	2.7×10−1	1.2×10²	3.3×10³
Cm-243		9.0	2.4×10²	1.0×10−3	2.7×10−2	1.9×10−3	5.2×10¹
Cm-244		2.0×10¹	5.4×10²	2.0×10−3	5.4×10−2	3.0	8.1×10¹
Cm-245		9.0	2.4×10²	9.0×10−4	2.4×10−2	6.4×10−3	1.7×10−1
Cm-246		9.0	2.4×10²	9.0×10−4	2.4×10−2	1.1×10−2	3.1×10−1
Cm-247 (a)		3.0	8.1×10¹	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	1.6×10−5	4.2×10−3
Co-55	Cobalt (27)	5.0×10−1	1.4×10¹	5.0×10−1	1.4×10¹	1.1×10⁵	3.1×10⁶
Co-56		3.0×10−1	8.1	3.0×10−1	8.1	1.1×10³	3.0×10⁴
Co-57		1.0×10¹	2.7×10²	1.0×10¹	2.7×10²	3.1×10²	8.4×10³
Co-58		1.0	2.7×10¹	1.0	2.7×10¹	1.2×10³	3.2×10⁴
Co-58m		4.0×10¹	1.1×10³	4.0×10¹	1.1×10³	2.2×10⁵	5.9×10⁶
Co-60		4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	4.2×10¹	1.1×10³
Cr-51	Chromium (24)	3.0×10¹	8.1×10²	3.0×10¹	8.1×10²	3.4×10³	9.2×10⁴
Cs-129	Cesium (55)	4.0	1.1×10²	4.0	1.1×10²	2.8×10⁴	7.6×10⁵
Cs-131		3.0×10¹	8.1×10²	3.0×10¹	8.1×10²	3.8×10³	1.0×10⁵
Cs-132		1.0	2.7×10¹	1.0	2.7×10¹	5.7×10³	1.5×10⁵
Cs-134		7.0×10−1	1.9×10¹	7.0×10−1	1.9×10¹	4.8×10¹	1.3×10³
Cs-134m		4.0×10¹	1.1×10³	6.0×10−1	1.6×10¹	3.0×10⁵	8.0×10⁶
Cs-135		4.0×10¹	1.1×10³	1.0	2.7×10¹	4.3×10−5	1.2×10−3
Cs-136		5.0×10−1	1.4×10¹	5.0×10−1	1.4×10¹	2.7×10³	7.3×10⁴
Cs-137 (a)		2.0	5.4×10¹	6.0×10−1	1.6×10¹	3.2	8.7×10¹
Cu-64	Copper (29)	6.0	1.6×10²	1.0	2.7×10¹	1.4×10⁵	3.9×10⁶
Cu-67		1.0×10¹	2.7×10²	7.0×10−1	1.9×10¹	2.8×10⁴	7.6×10⁵
Dy-159	Dysprosium (66)	2.0×10¹	5.4×10²	2.0×10¹	5.4×10²	2.1×10²	5.7×10³
Dy-165		9.0×10−1	2.4×10¹	6.0×10−1	1.6×10¹	3.0×10⁵	8.2×10⁶
Dy-166 (a)		9.0×10−1	2.4×10¹	3.0×10−1	8.1	8.6×10³	2.3×10⁵
Er-169	Erbium (68)	4.0×10¹	1.1×10³	1.0	2.7×10¹	3.1×10³	8.3×10⁴
Er-171		8.0×10−1	2.2×10¹	5.0×10−1	1.4×10¹	9.0×10⁴	2.4×10⁶
Eu-147	Europium (63)	2.0	5.4×10¹	2.0	5.4×10¹	1.4×10³	3.7×10⁴
Eu-148		5.0×10−1	1.4×10¹	5.0×10−1	1.4×10¹	6.0×10²	1.6×10⁴
Eu-149		2.0×10¹	5.4×10²	2.0×10¹	5.4×10²	3.5×10²	9.4×10³
Eu-150 (short lived)		2.0	5.4×10¹	7.0×10−1	1.9×10¹	6.1×10⁴	1.6×10⁶
Eu-150 (long lived)		7×10−1	1.9×10¹	7.0×10−1	1.9×10¹	6.1×10⁴	1.6×10⁶
Eu-152		1.0	2.7×10¹	1.0	2.7×10¹	6.5	1.8×10²
Eu-152m		8.0×10−1	2.2×10¹	8.0×10−1	2.2×10¹	8.2×10⁴	2.2×10⁶
Eu-154		9.0×10−1	2.4×10¹	6.0×10−1	1.6×10¹	9.8	2.6×10²
Eu-155		2.0×10¹	5.4×10²	3.0	8.1×10¹	1.8×10¹	4.9×10²
Eu-156		7.0×10−1	1.9×10¹	7.0×10−1	1.9×10¹	2.0×10³	5.5×10⁴
F-18	Fluorine (9)	1.0	2.7×10¹	6.0×10−1	1.6×10¹	3.5×10⁶	9.5×10⁷
Fe-52 (a)	Iron (26)	3.0×10−1	8.1	3.0×10−1	8.1	2.7×10⁵	7.3×10⁶
Fe-55		4.0×10¹	1.1×10³	4.0×10¹	1.1×10³	8.8×10¹	2.4×10³
Fe-59		9.0×10−1	2.4×10¹	9.0×10−1	2.4×10¹	1.8×10³	5.0×10⁴
Fe-60 (a)		4.0×10¹	1.1×10³	2.0×10−1	5.4	7.4×10−4	2.0×10−2
Ga-67	Gallium (31)	7.0	1.9×10²	3.0	8.1×10¹	2.2×10⁴	6.0×10⁵
Ga-68		5.0×10−1	1.4×10¹	5.0×10−1	1.4×10¹	1.5×10⁶	4.1×10⁷
Ga-72		4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	1.1×10⁵	3.1×10⁶
Gd-146 (a)	Gadolinium (64)	5.0×10−1	1.4×10¹	5.0×10−1	1.4×10¹	6.9×10²	1.9×10⁴
Gd-148		2.0×10¹	5.4×10²	2.0×10−3	5.4×10−2	1.2	3.2×10¹
Gd-153		1.0×10¹	2.7×10²	9.0	2.4×10²	1.3×10²	3.5×10³
Gd-159		3.0	8.1×10¹	6.0×10−1	1.6×10¹	3.9×10⁴	1.1×10⁶
Ge-68 (a)	Germanium (32)	5.0×10−1	1.4×10¹	5.0×10−1	1.4×10¹	2.6×10²	7.1×10³
Ge-71		4.0×10¹	1.1×10³	4.0×10¹	1.1×10³	5.8×10³	1.6×10⁵
Ge-77		3.0×10−1	8.1	3.0×10−1	8.1	1.3×10⁵	3.6×10⁶
Hf-172 (a)	Hafnium (72)	6.0×10−1	1.6×10¹	6.0×10−1	1.6×10¹	4.1×10¹	1.1×10³
Hf-175		3.0	8.1×10¹	3.0	8.1×10¹	3.9×10²	1.1×10⁴
Hf-181		2.0	5.4×10¹	5.0×10−1	1.4×10¹	6.3×10²	1.7×10⁴
Hf-182		Unlimited	Unlimited	Unlimited	Unlimited	8.1×10−6	2.2×10−4
Hg-194 (a)	Mercury (80)	1.0	2.7×10¹	1.0	2.7×10¹	1.3×10−1	3.5
Hg-195m (a)		3.0	8.1×10¹	7.0×10−1	1.9×10¹	1.5×10⁴	4.0×10⁵
Hg-197		2.0×10¹	5.4×10²	1.0×10¹	2.7×10²	9.2×10³	2.5×10⁵
Hg-197m		1.0×10¹	2.7×10²	4.0×10−1	1.1×10¹	2.5×10⁴	6.7×10⁵
Hg-203		5.0	1.4×10²	1.0	2.7×10¹	5.1×10²	1.4×10⁴
Ho-166	Holmium (67)	4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	2.6×10⁴	7.0×10⁵
Ho-166m		6.0×10−1	1.6×10¹	5.0×10−1	1.4×10¹	6.6×10−2	1.8
I-123	Iodine (53)	6.0	1.6×10²	3.0	8.1×10¹	7.1×10⁴	1.9×10⁶
I-124		1.0	2.7×10¹	1.0	2.7×10¹	9.3×10³	2.5×10⁵
I-125		2.0×10¹	5.4×10²	3.0	8.1×10¹	6.4×10²	1.7×10⁴
I-126		2.0	5.4×10¹	1.0	2.7×10¹	2.9×10³	8.0×10⁴
I-129		Unlimited	Unlimited	Unlimited	Unlimited	6.5×10−6	1.8×10−4
I-131		3.0	8.1×10¹	7.0×10−1	1.9×10¹	4.6×10³	1.2×10⁵
I-132		4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	3.8×10⁵	1.0×10⁷
I-133		7.0×10−1	1.9×10¹	6.0×10−1	1.6×10¹	4.2×10⁴	1.1×10⁶
I-134		3.0×10−1	8.1	3.0×10−1	8.1	9.9×10⁵	2.7×10⁷
I-135 (a)		6.0×10−1	1.6×10¹	6.0×10−1	1.6×10¹	1.3×10⁵	3.5×10⁶
In-111	Indium (49)	3.0	8.1×10¹	3.0	8.1×10¹	1.5×10⁴	4.2×10⁵
In-113m		4.0	1.1×10²	2.0	5.4×10¹	6.2×10⁵	1.7×10⁷
In-114m (a)		1.0×10¹	2.7×10²	5.0×10−1	1.4×10¹	8.6×10²	2.3×10⁴
In-115m		7.0	1.9×10²	1.0	2.7×10¹	2.2×10⁵	6.1×10⁶
Ir-189 (a)	Iridium (77)	1.0×10¹	2.7×10²	1.0×10¹	2.7×10²	1.9×10³	5.2×10⁴
Ir-190		7.0×10−1	1.9×10¹	7.0×10−1	1.9×10¹	2.3×10³	6.2×10⁴
Ir-192 (c)		1.0	2.7×10¹	6.0×10−1	1.6×10¹	3.4×10²	9.2×10³
Ir-194		3.0×10−1	8.1	3.0×10−1	8.1	3.1×10⁴	8.4×10⁵
K-40	Potassium (19)	9.0×10−1	2.4×10¹	9.0×10−1	2.4×10¹	2.4×10−7	6.4×10−6
K-42		2.0×10−1	5.4	2.0×10−1	5.4	2.2×10⁵	6.0×10⁶
K-43		7.0×10−1	1.9×10¹	6.0×10−1	1.6×10¹	1.2×10⁵	3.3×10⁶
Kr-81	Krypton (36)	4.0×10¹	1.1×10³	4.0×10¹	1.1×10³	7.8×10−4	2.1×10−2
Kr-85		1.0×10¹	2.7×10²	1.0×10¹	2.7×10²	1.5×10¹	3.9×10²
Kr-85m		8.0	2.2×10²	3.0	8.1×10¹	3.0×10⁵	8.2×10⁶
Kr-87		2.0×10−1	5.4	2.0×10−1	5.4	1.0×10⁶	2.8×10⁷
La-137	Lanthanum (57)	3.0×10¹	8.1×10²	6.0	1.6×10²	1.6×10−3	4.4×10−2
La-140		4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	2.1×10⁴	5.6×10⁵
Lu-172	Lutetium (71)	6.0×10−1	1.6×10¹	6.0×10−1	1.6×10¹	4.2×10³	1.1×10⁵
Lu-173		8.0	2.2×10²	8.0	2.2×10²	5.6×10¹	1.5×10³
Lu-174		9.0	2.4×10²	9.0	2.4×10²	2.3×10¹	6.2×10²
Lu-174m		2.0×10¹	5.4×10²	1.0×10¹	2.7×10²	2.0×10²	5.3×10³
Lu-177		3.0×10¹	8.1×10²	7.0×10−1	1.9×10¹	4.1×10³	1.1×10⁵
Mg-28 (a)	Magnesium (12)	3.0×10−1	8.1	3.0×10−1	8.1	2.0×10⁵	5.4×10⁶
Mn-52	Manganese (25)	3.0×10−1	8.1	3.0×10−1	8.1	1.6×10⁴	4.4×10⁵
Mn-53		Unlimited	Unlimited	Unlimited	Unlimited	6.8×10−5	1.8×10−3
Mn-54		1.0	2.7×10¹	1.0	2.7×10¹	2.9×10²	7.7×10³
Mn-56		3.0×10−1	8.1	3.0×10−1	8.1	8.0×10⁵	2.2×10⁷
Mo-93	Molybdenum (42)	4.0×10¹	1.1×10³	2.0×10¹	5.4×10²	4.1×10−2	1.1
Mo-99 (a) (i)		1.0	2.7×10¹	6.0×10−1	1.6×10¹	1.8×10⁴	4.8×10⁵
N-13	Nitrogen (7)	9.0×10−1	2.4×10¹	6.0×10−1	1.6×10¹	5.4×10⁷	1.5×10⁹
Na-22	Sodium (11)	5.0×10−1	1.4×10¹	5.0×10−1	1.4×10¹	2.3×10²	6.3×10³
Na-24		2.0×10−1	5.4	2.0×10−1	5.4	3.2×10⁵	8.7×10⁶
Nb-93m	Niobium (41)	4.0×10¹	1.1×10³	3.0×10¹	8.1×10²	8.8	2.4×10²
Nb-94		7.0×10−1	1.9×10¹	7.0×10−1	1.9×10¹	6.9×10−3	1.9×10−1
Nb-95		1.0	2.7×10¹	1.0	2.7×10¹	1.5×10³	3.9×10⁴
Nb-97		9.0×10−1	2.4×10¹	6.0×10−1	1.6×10¹	9.9×10⁵	2.7×10⁷
Nd-147	Neodymium (60)	6.0	1.6×10²	6.0×10−1	1.6×10¹	3.0×10³	8.1×10⁴
Nd-149		6.0×10−1	1.6×10¹	5.0×10−1	1.4×10¹	4.5×10⁵	1.2×10⁷
Ni-59	Nickel (28)	Unlimited	Unlimited	Unlimited	Unlimited	3.0×10−3	8.0×10−2
Ni-63		4.0×10¹	1.1×10³	3.0×10¹	8.1×10²	2.1	5.7×10¹
Ni-65		4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	7.1×10⁵	1.9×10⁷
Np-235	Neptunium (93)	4.0×10¹	1.1×10³	4.0×10¹	1.1×10³	5.2×10¹	1.4×10³
Np-236 (short-lived)		2.0×10¹	5.4×10²	2.0	5.4×10¹	4.7×10−4	1.3×10−2
Np-236 (long-lived)		9.0×10⁰	2.4×10²	2.0×10−2	5.4×10−1	4.7×10−4	1.3×10−2
Np-237		2.0×10¹	5.4×10²	2.0×10−3	5.4×10−2	2.6×10−5	7.1×10−4
Np-239		7.0	1.9×10²	4.0×10−1	1.1×10¹	8.6×10³	2.3×10⁵
Os-185	Osmium (76)	1.0	2.7×10¹	1.0	2.7×10¹	2.8×10²	7.5×10³
Os-191		1.0×10¹	2.7×10²	2.0	5.4×10¹	1.6×10³	4.4×10⁴
Os-191m		4.0×10¹	1.1×10³	3.0×10¹	8.1×10²	4.6×10⁴	1.3×10⁶
Os-193		2.0	5.4×10¹	6.0×10−1	1.6×10¹	2.0×10⁴	5.3×10⁵
Os-194 (a)		3.0×10−1	8.1	3.0×10−1	8.1	1.1×10¹	3.1×10²
P-32	Phosphorus (15)	5.0×10−1	1.4×10¹	5.0×10−1	1.4×10¹	1.1×10⁴	2.9×10⁵
P-33		4.0×10¹	1.1×10³	1.0	2.7×10¹	5.8×10³	1.6×10⁵
Pa-230 (a)	Protactinium (91)	2.0	5.4×10¹	7.0×10−2	1.9	1.2×10³	3.3×10⁴
Pa-231		4.0	1.1×10²	4.0×10−4	1.1×10−2	1.7×10−3	4.7×10−2
Pa-233		5.0	1.4×10²	7.0×10−1	1.9×10¹	7.7×10²	2.1×10⁴
Pb-201	Lead (82)	1.0	2.7×10¹	1.0	2.7×10¹	6.2×10⁴	1.7×10⁶
Pb-202		4.0×10¹	1.1×10³	2.0×10¹	5.4×10²	1.2×10−4	3.4×10−3
Pb-203		4.0	1.1×10²	3.0	8.1×10¹	1.1×10⁴	3.0×10⁵
Pb-205		Unlimited	Unlimited	Unlimited	Unlimited	4.5×10−6	1.2×10−4
Pb-210 (a)		1.0	2.7×10¹	5.0×10−2	1.4	2.8	7.6×10¹
Pb-212 (a)		7.0×10−1	1.9×10¹	2.0×10−1	5.4	5.1×10⁴	1.4×10⁶
Pd-103 (a)	Palladium (46)	4.0×10¹	1.1×10³	4.0×10¹	1.1×10³	2.8×10³	7.5×10⁴
Pd-107		Unlimited	Unlimited	Unlimited	Unlimited	1.9×10−5	5.1×10−4
Pd-109		2.0	5.4×10¹	5.0×10−1	1.4×10¹	7.9×10⁴	2.1×10⁶
Pm-143	Promethium (61)	3.0	8.1×10¹	3.0	8.1×10¹	1.3×10²	3.4×10³
Pm-144		7.0×10−1	1.9×10¹	7.0×10−1	1.9×10¹	9.2×10¹	2.5×10³
Pm-145		3.0×10¹	8.1×10²	1.0×10¹	2.7×10²	5.2	1.4×10²
Pm-147		4.0×10¹	1.1×10³	2.0	5.4×10¹	3.4×10¹	9.3×10²
Pm-148m (a)		8.0×10−1	2.2×10¹	7.0×10−1	1.9×10¹	7.9×10²	2.1×10⁴
Pm-149		2.0	5.4×10¹	6.0×10−1	1.6×10¹	1.5×10⁴	4.0×10⁵
Pm-151		2.0	5.4×10¹	6.0×10−1	1.6×10¹	2.7×10⁴	7.3×10⁵
Po-210	Polonium (84)	4.0×10¹	1.1×10³	2.0×10−2	5.4×10−1	1.7×10²	4.5×10³
Pr-142	Praseodymium (59)	4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	4.3×10⁴	1.2×10⁶
Pr-143		3.0	8.1×10¹	6.0×10−1	1.6×10¹	2.5×10³	6.7×10⁴
Pt-188 (a)	Platinum (78)	1.0	2.7×10¹	8.0×10−1	2.2×10¹	2.5×10³	6.8×10⁴
Pt-191		4.0	1.1×10²	3.0	8.1×10¹	8.7×10³	2.4×10⁵
Pt-193		4.0×10¹	1.1×10³	4.0×10¹	1.1×10³	1.4	3.7×10¹
Pt-193m		4.0×10¹	1.1×10³	5.0×10−1	1.4×10¹	5.8×10³	1.6×10⁵
Pt-195m		1.0×10¹	2.7×10²	5.0×10−1	1.4×10¹	6.2×10³	1.7×10⁵
Pt-197		2.0×10¹	5.4×10²	6.0×10−1	1.6×10¹	3.2×10⁴	8.7×10⁵
Pt-197m		1.0×10¹	2.7×10²	6.0×10−1	1.6×10¹	3.7×10⁵	1.0×10⁷
Pu-236	Plutonium (94)	3.0×10¹	8.1×10²	3.0×10−3	8.1×10−2	2.0×10¹	5.3×10²
Pu-237		2.0×10¹	5.4×10²	2.0×10¹	5.4×10²	4.5×10²	1.2×10⁴
Pu-238		1.0×10¹	2.7×10²	1.0×10−3	2.7×10−2	6.3×10−1	1.7×10¹
Pu-239		1.0×10¹	2.7×10²	1.0×10−3	2.7×10−2	2.3×10−3	6.2×10−2
Pu-240		1.0×10¹	2.7×10²	1.0×10−3	2.7×10−2	8.4×10−3	2.3×10−1
Pu-241 (a)		4.0×10¹	1.1×10³	6.0×10−2	1.6	3.8	1.0×10²
Pu-242		1.0×10¹	2.7×10²	1.0×10−3	2.7×10−2	1.5×10−4	3.9×10−3
Pu-244 (a)		4.0×10−1	1.1×10¹	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	1.1×10¹	7.0×10−3	1.9×10−1	1.9×10³	5.1×10⁴
Ra-224 (a)		4.0×10−1	1.1×10¹	2.0×10−2	5.4×10−1	5.9×10³	1.6×10⁵
Ra-225 (a)		2.0×10−1	5.4	4.0×10−3	1.1×10−1	1.5×10³	3.9×10⁴
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	1.6×10¹	2.0×10−2	5.4×10−1	1.0×10¹	2.7×10²
Rb-81	Rubidium (37)	2.0	5.4×10¹	8.0×10−1	2.2×10¹	3.1×10⁵	8.4×10⁶
Rb-83 (a)		2.0	5.4×10¹	2.0	5.4×10¹	6.8×10²	1.8×10⁴
Rb-84		1.0	2.7×10¹	1.0	2.7×10¹	1.8×10³	4.7×10⁴
Rb-86		5.0×10−1	1.4×10¹	5.0×10−1	1.4×10¹	3.0×10³	8.1×10⁴
Rb-87		Unlimited	Unlimited	Unlimited	Unlimited	3.2×10−9	8.6×10−8
Rb(nat)		Unlimited	Unlimited	Unlimited	Unlimited	6.7×10⁶	1.8×10⁸
Re-184	Rhenium (75)	1.0	2.7×10¹	1.0	2.7×10¹	6.9×10²	1.9×10⁴
Re-184m		3.0	8.1×10¹	1.0	2.7×10¹	1.6×10²	4.3×10³
Re-186		2.0	5.4×10¹	6.0×10−1	1.6×10¹	6.9×10³	1.9×10⁵
Re-187		Unlimited	Unlimited	Unlimited	Unlimited	1.4×10−9	3.8×10−8
Re-188		4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	3.6×10⁴	9.8×10⁵
Re-189 (a)		3.0	8.1×10¹	6.0×10−1	1.6×10¹	2.5×10⁴	6.8×10⁵
Re(nat)		Unlimited	Unlimited	Unlimited	Unlimited	0.0	2.4×10−8
Rh-99	Rhodium (45)	2.0	5.4×10¹	2.0	5.4×10¹	3.0×10³	8.2×10⁴
Rh-101		4.0	1.1×10²	3.0	8.1×10¹	4.1×10¹	1.1×10³
Rh-102		5.0×10−1	1.4×10¹	5.0×10−1	1.4×10¹	4.5×10¹	1.2×10³
Rh-102m		2.0	5.4×10¹	2.0	5.4×10¹	2.3×10²	6.2×10³
Rh-103m		4.0×10¹	1.1×10³	4.0×10¹	1.1×10³	1.2×10⁶	3.3×10⁷
Rh-105		1.0×10¹	2.7×10²	8.0×10−1	2.2×10¹	3.1×10⁴	8.4×10⁵
Rn-222 (a)	Radon (86)	3.0×10−1	8.1	4.0×10−3	1.1×10−1	5.7×10³	1.5×10⁵
Ru-97	Ruthenium (44)	5.0	1.4×10²	5.0	1.4×10²	1.7×10⁴	4.6×10⁵
Ru-103 (a)		2.0	5.4×10¹	2.0	5.4×10¹	1.2×10³	3.2×10⁴
Ru-105		1.0	2.7×10¹	6.0×10−1	1.6×10¹	2.5×10⁵	6.7×10⁶
Ru-106 (a)		2.0×10−1	5.4	2.0×10−1	5.4	1.2×10²	3.3×10³
S-35	Sulphur (16)	4.0×10¹	1.1×10³	3.0	8.1×10¹	1.6×10³	4.3×10⁴
Sb-122	Antimony (51)	4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	1.5×10⁴	4.0×10⁵
Sb-124		6.0×10−1	1.6×10¹	6.0×10−1	1.6×10¹	6.5×10²	1.7×10⁴
Sb-125		2.0	5.4×10¹	1.0	2.7×10¹	3.9×10¹	1.0×10³
Sb-126		4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	3.1×10³	8.4×10⁴
Sc-44	Scandium (21)	5.0×10−1	1.4×10¹	5.0×10−1	1.4×10¹	6.7×10⁵	1.8×10⁷
Sc-46		5.0×10−1	1.4×10¹	5.0×10−1	1.4×10¹	1.3×10³	3.4×10⁴
Sc-47		1.0×10¹	2.7×10²	7.0×10−1	1.9×10¹	3.1×10⁴	8.3×10⁵
Sc-48		3.0×10−1	8.1	3.0×10−1	8.1	5.5×10⁴	1.5×10⁶
Se-75	Selenium (34)	3.0	8.1×10¹	3.0	8.1×10¹	5.4×10²	1.5×10⁴
Se-79		4.0×10¹	1.1×10³	2.0	5.4×10¹	2.6×10−3	7.0×10−2
Si-31	Silicon (14)	6.0×10−1	1.6×10¹	6.0×10−1	1.6×10¹	1.4×10⁶	3.9×10⁷
Si-32		4.0×10¹	1.1×10³	5.0×10−1	1.4×10¹	3.9	1.1×10²
Sm-145	Samarium (62)	1.0×10¹	2.7×10²	1.0×10¹	2.7×10²	9.8×10¹	2.6×10³
Sm-147		Unlimited	Unlimited	Unlimited	Unlimited	8.5×10−1	2.3×10−8
Sm-151		4.0×10¹	1.1×10³	1.0×10¹	2.7×10²	9.7×10−1	2.6×10¹
Sm-153		9.0	2.4×10²	6.0×10−1	1.6×10¹	1.6×10⁴	4.4×10⁵
Sn-113 (a)	Tin (50)	4.0	1.1×10²	2.0	5.4×10¹	3.7×10²	1.0×10⁴
Sn-117m		7.0	1.9×10²	4.0×10−1	1.1×10¹	3.0×10³	8.2×10⁴
Sn-119m		4.0×10¹	1.1×10³	3.0×10¹	8.1×10²	1.4×10²	3.7×10³
Sn-121m (a)		4.0×10¹	1.1×10³	9.0×10−1	2.4×10¹	2.0	5.4×10¹
Sn-123		8.0×10−1	2.2×10¹	6.0×10−1	1.6×10¹	3.0×10²	8.2×10³
Sn-125		4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	4.0×10³	1.1×10⁵
Sn-126 (a)		6.0×10−1	1.6×10¹	4.0×10−1	1.1×10¹	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	2.3×10³	6.2×10⁴
Sr-85		2.0	5.4×10¹	2.0	5.4×10¹	8.8×10²	2.4×10⁴
Sr-85m		5.0	1.4×10²	5.0	1.4×10²	1.2×10⁶	3.3×10⁷
Sr-87m		3.0	8.1×10¹	3.0	8.1×10¹	4.8×10⁵	1.3×10⁷
Sr-89		6.0×10−1	1.6×10¹	6.0×10−1	1.6×10¹	1.1×10³	2.9×10⁴
Sr-90 (a)		3.0×10−1	8.1	3.0×10−1	8.1	5.1	1.4×10²
Sr-91 (a)		3.0×10−1	8.1	3.0×10−1	8.1	1.3×10⁵	3.6×10⁶
Sr-92 (a)		1.0	2.7×10¹	3.0×10−1	8.1	4.7×10⁵	1.3×10⁷
T(H-3)	Tritium (1)	4.0×10¹	1.1×10³	4.0×10¹	1.1×10³	3.6×10²	9.7×10³
Ta-178 (long-lived)	Tantalum (73)	1.0	2.7×10¹	8.0×10−1	2.2×10¹	4.2×10⁶	1.1×10⁸
Ta-179		3.0×10¹	8.1×10²	3.0×10¹	8.1×10²	4.1×10¹	1.1×10³
Ta-182		9.0×10−1	2.4×10¹	5.0×10−1	1.4×10¹	2.3×10²	6.2×10³
Tb-157	Terbium (65)	4.0×10¹	1.1×10³	4.0×10¹	1.1×10³	5.6×10−1	1.5×10¹
Tb-158		1.0	2.7×10¹	1.0	2.7×10¹	5.6×10−1	1.5×10¹
Tb-160		1.0	2.7×10¹	6.0×10−1	1.6×10¹	4.2×10²	1.1×10⁴
Tc-95m (a)	Technetium (43)	2.0	5.4×10¹	2.0	5.4×10¹	8.3×10²	2.2×10⁴
Tc-96		4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	1.2×10⁴	3.2×10⁵
Tc-96m (a)		4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	1.4×10⁶	3.8×10⁷
Tc-97		Unlimited	Unlimited	Unlimited	Unlimited	5.2×10−5	1.4×10−3
Tc-97m		4.0×10¹	1.1×10³	1.0	2.7×10¹	5.6×10²	1.5×10⁴
Tc-98		8.0×10−1	2.2×10¹	7.0×10−1	1.9×10¹	3.2×10−5	8.7×10−4
Tc-99		4.0×10¹	1.1×10³	9.0×10−1	2.4×10¹	6.3×10−4	1.7×10−2
Tc-99m		1.0×10¹	2.7×10²	4.0	1.1×10²	1.9×10⁵	5.3×10⁶
Te-121	Tellurium (52)	2.0	5.4×10¹	2.0	5.4×10¹	2.4×10³	6.4×10⁴
Te-121m		5.0	1.4×10²	3.0	8.1×10¹	2.6×10²	7.0×10³
Te-123m		8.0	2.2×10²	1.0	2.7×10¹	3.3×10²	8.9×10³
Te-125m		2.0×10¹	5.4×10²	9.0×10−1	2.4×10¹	6.7×10²	1.8×10⁴
Te-127		2.0×10¹	5.4×10²	7.0×10−1	1.9×10¹	9.8×10⁴	2.6×10⁶
Te-127m (a)		2.0×10¹	5.4×10²	5.0×10−1	1.4×10¹	3.5×10²	9.4×10³
Te-129		7.0×10−1	1.9×10¹	6.0×10−1	1.6×10¹	7.7×10⁵	2.1×10⁷
Te-129m (a)		8.0×10−1	2.2×10¹	4.0×10−1	1.1×10¹	1.1×10³	3.0×10⁴
Te-131m (a)		7.0×10−1	1.9×10¹	5.0×10−1	1.4×10¹	3.0×10⁴	8.0×10⁵
Te-132 (a)		5.0×10−1	1.4×10¹	4.0×10−1	1.1×10¹	1.1×10⁴	8.0×10⁵
Th-227	Thorium (90)	1.0×10¹	2.7×10²	5.0×10−3	1.4×10−1	1.1×10³	3.1×10⁴
Th-228 (a)		5.0×10−1	1.4×10¹	1.0×10−3	2.7×10−2	3.0×10¹	8.2×10²
Th-229		5.0	1.4×10²	5.0×10−4	1.4×10−2	7.9×10−3	2.1×10−1
Th-230		1.0×10¹	2.7×10²	1.0×10−3	2.7×10−2	7.6×10−4	2.1×10−2
Th-231		4.0×10¹	1.1×10³	2.0×10−2	5.4×10−1	2.0×10⁴	5.3×10⁵
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	8.6×10²	2.3×10⁴
Th(nat)		Unlimited	Unlimited	Unlimited	Unlimited	8.1×10−9	2.2×10−7
Ti-44 (a)	Titanium (22)	5.0×10−1	1.4×10¹	4.0×10−1	1.1×10¹	6.4	1.7×10²
Tl-200	Thallium (81)	9.0×10−1	2.4×10¹	9.0×10−1	2.4×10¹	2.2×10⁴	6.0×10⁵
Tl-201		1.0×10¹	2.7×10²	4.0	1.1×10²	7.9×10³	2.1×10⁵
Tl-202		2.0	5.4×10¹	2.0	5.4×10¹	2.0×10³	5.3×10⁴
Tl-204		1.0×10¹	2.7×10²	7.0×10−1	1.9×10¹	1.7×10¹	4.6×10²
Tm-167	Thulium (69)	7.0	1.9×10²	8.0×10−1	2.2×10¹	3.1×10³	8.5×10⁴
Tm-170		3.0	8.1×10¹	6.0×10−1	1.6×10¹	2.2×10²	6.0×10³
Tm-171		4.0×10¹	1.1×10³	4.0×10¹	1.1×10³	4.0×10¹	1.1×10³
U-230 (fast lung absorption) (a)(d)	Uranium (92)	4.0×10¹	1.1×10³	1.0×10−1	2.7	1.0×10³	2.7×10⁴
U-230 (medium lung absorption) (a)(e)		4.0×10¹	1.1×10³	4.0×10−3	1.1×10−1	1.0×10³	2.7×10⁴
U-230 (slow lung absorption) (a)(f)		3.0×10¹	8.1×10²	3.0×10−3	8.1×10−2	1.0×10³	2.7×10⁴
U-232 (fast lung absorption) (d)		4.0×10¹	1.1×10³	1.0×10−2	2.7×10−1	8.3×10−1	2.2×10¹
U-232 (medium lung absorption) (e)		4.0×10¹	1.1×10³	7.0×10−3	1.9×10−1	8.3×10−1	2.2×10¹
U-232 (slow lung absorption) (f)		1.0×10¹	2.7×10²	1.0×10−3	2.7×10−2	8.3×10−1	2.2×10¹
U-233 (fast lung absorption) (d)		4.0×10¹	1.1×10³	9.0×10−2	2.4	3.6×10−4	9.7×10−3
U-233 (medium lung absorption) (e)		4.0×10¹	1.1×10³	2.0×10−2	5.4×10−1	3.6×10−4	9.7×10−3
U-233 (slow lung absorption) (f)		4.0×10¹	1.1×10³	6.0×10−3	1.6×10−1	3.6×10−4	9.7×10−3
U-234 (fast lung absorption) (d)		4.0×10¹	1.1×10³	9.0×10−2	2.4	2.3×10−4	6.2×10−3
U-234 (medium lung absorption) (e)		4.0×10¹	1.1×10³	2.0×10−2	5.4×10−1	2.3×10−4	6.2×10−3
U-234 (slow lung absorption) (f)		4.0×10¹	1.1×10³	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)		4.0×10¹	1.1×10³	2.0×10−2	5.4×10−1	2.4×10−6	6.5×10−5
U-236 (slow lung absorption) (f)		4.0×10¹	1.1×10³	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 Table A-4	See Table A-4
U (dep)		Unlimited	Unlimited	Unlimited	Unlimited	See Table A-4	See Table A-4
V-48	Vanadium (23)	4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	6.3×10³	1.7×10⁵
V-49		4.0×10¹	1.1×10³	4.0×10¹	1.1×10³	3.0×10²	8.1×10³
W-178 (a)	Tungsten (74)	9.0	2.4×10²	5.0	1.4×10²	1.3×10³	3.4×10⁴
W-181		3.0×10¹	8.1×10²	3.0×10¹	8.1×10²	2.2×10²	6.0×10³
W-185		4.0×10¹	1.1×10³	8.0×10−1	2.2×10¹	3.5×10²	9.4×10³
W-187		2.0	5.4×10¹	6.0×10−1	1.6×10¹	2.6×10⁴	7.0×10⁵
W-188 (a)		4.0×10−1	1.1×10¹	3.0×10−1	8.1	3.7×10²	1.0×10⁴
Xe-122 (a)	Xenon (54)	4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	4.8×10⁴	1.3×10⁶
Xe-123		2.0	5.4×10¹	7.0×10−1	1.9×10¹	4.4×10⁵	1.2×10⁷
Xe-127		4.0	1.1×10²	2.0	5.4×10¹	1.0×10³	2.8×10⁴
Xe-131m		4.0×10¹	1.1×10³	4.0×10¹	1.1×10³	3.1×10³	8.4×10⁴
Xe-133		2.0×10¹	5.4×10²	1.0×10¹	2.7×10²	6.9×10³	1.9×10⁵
Xe-135		3.0	8.1×10¹	2.0	5.4×10¹	9.5×10⁴	2.6×10⁶
Y-87 (a)	Yttrium (39)	1.0	2.7×10¹	1.0	2.7×10¹	1.7×10⁴	4.5×10⁵
Y-88		4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	5.2×10²	1.4×10⁴
Y-90		3.0×10−1	8.1	3.0×10−1	8.1	2.0×10⁴	5.4×10⁵
Y-91		6.0×10−1	1.6×10¹	6.0×10−1	1.6×10¹	9.1×10²	2.5×10⁴
Y-91m		2.0	5.4×10¹	2.0	5.4×10¹	1.5×10⁶	4.2×10⁷
Y-92		2.0×10−1	5.4	2.0×10−1	5.4	3.6×10⁵	9.6×10⁶
Y-93		3.0×10−1	8.1	3.0×10−1	8.1	1.2×10⁵	3.3×10⁶
Yb-169	Ytterbium (70)	4.0	1.1×10²	1.0	2.7×10¹	8.9×10²	2.4×10⁴
Yb-175		3.0×10¹	8.1×10²	9.0×10−1	2.4×10¹	6.6×10³	1.8×10⁵
Zn-65	Zinc (30)	2.0	5.4×10¹	2.0	5.4×10¹	3.0×10²	8.2×10³
Zn-69		3.0	8.1×10¹	6.0×10−1	1.6×10¹	1.8×10⁶	4.9×10⁷
Zn-69m (a)		3.0	8.1×10¹	6.0×10−1	1.6×10¹	1.2×10⁵	3.3×10⁶
Zr-88	Zirconium (40)	3.0	8.1×10¹	3.0	8.1×10¹	6.6×10²	1.8×10⁴
Zr-93		Unlimited	Unlimited	Unlimited	Unlimited	9.3×10−5	2.5×10−3
Zr-95 (a)		2.0	5.4×10¹	8.0×10−1	2.2×10¹	7.9×10²	2.1×10⁴
Zr-97 (a)		4.0×10−1	1.1×10¹	4.0×10−1	1.1×10¹	7.1×10⁴	1.9×10⁶

**Table A-2—Exempt Material Activity Concentrations and Exempt Consignment Activity Limits for Radionuclides**
Symbol ofradionuclide	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)
^a [Reserved]
^b Parent nuclides and their progeny included in secular equilibrium are listed in the following:
Sr-90Y-90
Zr-93Nb-93m
Zr-97Nb-97
Ru-106Rh-106
Cs-137Ba-137m
Ce-134La-134
Ce-144Pr-144
Ba-140La-140
Bi-212Tl-208 (0.36), Po-212 (0.64)
Pb-210Bi-210, Po-210
Pb-212Bi-212, Tl-208 (0.36), Po-212 (0.64)
Rn-220Po-216
Rn-222Po-218, Pb-214, Bi-214, Po-214
Ra-223Rn-219, Po-215, Pb-211, Bi-211, Tl-207
Ra-224Rn-220, Po-216, Pb-212, Bi-212, Tl-208(0.36), Po-212 (0.64)
Ra-226Rn-222, Po-218, Pb-214, Bi-214, Po-214, Pb-210, Bi-210, Po-210
Ra-228Ac-228
Th-226Ra-222, Rn-218, Po-214
Th-228Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36), Po-212 (0.64)
Th-229Ra-225, Ac-225, Fr-221, At-217, Bi-213, Po-213, Pb-209
Th-natRa-228, Ac-228, Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36), Po-212 (0.64)
Th-234Pa-234m
U-230Th-226, Ra-222, Rn-218, Po-214
U-232Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36), Po-212 (0.64)
U-235Th-231
U-238Th-234, Pa-234m
U-natTh-234, Pa-234m, U-234, Th-230, Ra-226, Rn-222, Po-218, Pb-214, Bi-214, Po-214, Pb-210, Bi-210, Po-210
U-240Np-240m
Np-237Pa-233
Am-242mAm-242
Am-243Np-239
^c [Reserved]
^d These values apply only to compounds of uranium that take the chemical form of UF6, UO2F2 and UO2(NO3)2 in both normal and accident conditions of transport.
^e These values apply only to compounds of uranium that take the chemical form of UO3, UF4, UCl4 and hexavalent compounds in both normal and accident conditions of transport.
^f These values apply to all compounds of uranium other than those specified in notes (d) and (e) of this table.
^g These values apply to unirradiated uranium only.
Ac-225	Actinium (89)	1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Ac-227		1.0×10−1	2.7×10−12	1.0×10³	2.7×10−8
Ac-228		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Ag-105	Silver (47)	1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Ag-108m (b)		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Ag-110m		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Ag-111		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Al-26	Aluminum (13)	1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Am-241	Americium (95)	1.0	2.7×10−11	1.0×10⁴	2.7×10−7
Am-242m (b)		1.0	2.7×10−11	1.0×10⁴	2.7×10−7
Am-243 (b)		1.0	2.7×10−11	1.0×10³	2.7×10−8
Ar-37	Argon (18)	1.0×10⁶	2.7×10−5	1.0×10⁸	2.7×10−3
Ar-39		1.0×10⁷	2.7×10−4	1.0×10⁴	2.7×10−7
Ar-41		1.0×10²	2.7×10−9	1.0×10⁹	2.7×10−2
As-72	Arsenic (33)	1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
As-73		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
As-74		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
As-76		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
As-77		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
At-211	Astatine (85)	1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Au-193	Gold (79)	1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Au-194		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Au-195		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Au-198		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Au-199		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Ba-131	Barium (56)	1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Ba-133		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Ba-133m		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Ba-140 (b)		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Be-7	Beryllium (4)	1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Be-10		1.0×10⁴	2.7×10−7	1.0×10⁶	2.7×10−5
Bi-205	Bismuth (83)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Bi-206		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Bi-207		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Bi-210		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Bi-210m		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Bi-212 (b)		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Bk-247	Berkelium (97)	1.0	2.7×10−11	1.0×10⁴	2.7×10−7
Bk-249		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Br-76	Bromine (35)	1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Br-77		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Br-82		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
C-11	Carbon (6)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
C-14		1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
Ca-41	Calcium (20)	1.0×10⁵	2.7×10−6	1.0×10⁷	2.7×10−4
Ca-45		1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
Ca-47		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Cd-109	Cadmium (48)	1.0×10⁴	2.7×10−7	1.0×10⁶	2.7×10−5
Cd-113m		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Cd-115		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Cd-115m		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Ce-139	Cerium (58)	1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Ce-141		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Ce-143		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Ce-144 (b)		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Cf-248	Californium (98)	1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Cf-249		1.0	2.7×10−11	1.0×10³	2.7×10−8
Cf-250		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Cf-251		1.0	2.7×10−11	1.0×10³	2.7×10−8
Cf-252		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Cf-253		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Cf-254		1.0	2.7×10−11	1.0×10³	2.7×10−8
Cl-36	Chlorine (17)	1.0×10⁴	2.7×10−7	1.0×10⁶	2.7×10−5
Cl-38		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Cm-240	Curium (96)	1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Cm-241		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Cm-242		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Cm-243		1.0	2.7×10−11	1.0×10⁴	2.7×10−7
Cm-244		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Cm-245		1.0	2.7×10−11	1.0×10³	2.7×10−8
Cm-246		1.0	2.7×10−11	1.0×10³	2.7×10−8
Cm-247		1.0	2.7×10−11	1.0×10⁴	2.7×10−7
Cm-248		1.0	2.7×10−11	1.0×10³	2.7×10−8
Co-55	Cobalt (27)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Co-56		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Co-57		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Co-58		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Co-58m		1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
Co-60		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Cr-51	Chromium (24)	1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Cs-129	Cesium (55)	1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Cs-131		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Cs-132		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Cs-134		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Cs-134m		1.0×10³	2.7×10−8	1.0×10⁵	2.7×10−6
Cs-135		1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
Cs-136		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Cs-137 (b)		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Cu-64	Copper (29)	1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Cu-67		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Dy-159	Dysprosium (66)	1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Dy-165		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Dy-166		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Er-169	Erbium (68)	1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
Er-171		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Eu-147	Europium (63)	1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Eu-148		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Eu-149		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Eu-150 (short lived)		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Eu-150 (long lived)		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Eu-152		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Eu-152m		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Eu-154		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Eu-155		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Eu-156		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
F-18	Fluorine (9)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Fe-52	Iron (26)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Fe-55		1.0×10⁴	2.7×10−7	1.0×10⁶	2.7×10−5
Fe-59		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Fe-60		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Ga-67	Gallium (31)	1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Ga-68		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Ga-72		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Gd-146	Gadolinium (64)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Gd-148		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Gd-153		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Gd-159		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Ge-68	Germanium (32)	1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Ge-71		1.0×10⁴	2.7×10−7	1.0×10⁸	2.7×10−3
Ge-77		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Hf-172	Hafnium (72)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Hf-175		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Hf-181		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Hf-182		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Hg-194	Mercury (80)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Hg-195m		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Hg-197		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Hg-197m		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Hg-203		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Ho-166	Holmium (67)	1.0×10³	2.7×10−8	1.0×10⁵	2.7×10−6
Ho-166m		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
I-123	Iodine (53)	1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
I-124		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
I-125		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
I-126		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
I-129		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
I-131		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
I-132		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
I-133		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
I-134		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
I-135		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
In-111	Indium (49)	1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
In-113m		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
In-114m		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
In-115m		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Ir-189	Iridium (77)	1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Ir-190		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Ir-192		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Ir-194		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
K-40	Potassium (19)	1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
K-42		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
K-43		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Kr-81	Krypton (36)	1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
Kr-85		1.0×10⁵	2.7×10−6	1.0×10⁴	2.7×10−7
Kr-85m		1.0×10³	2.7×10−8	1.0×10¹⁰	2.7×10−1
Kr-87		1.0×10²	2.7×10−9	1.0×10⁹	2.7×10−2
La-137	Lanthanum (57)	1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
La-140		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Lu-172	Lutetium (71)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Lu-173		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Lu-174		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Lu-174m		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Lu-177		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Mg-28	Magnesium (12)	1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Mn-52	Manganese (25)	1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Mn-53		1.0×10⁴	2.7×10−7	1.0×10⁹	2.7×10−2
Mn-54		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Mn-56		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Mo-93	Molybdenum (42)	1.0×10³	2.7×10−8	1.0×10⁸	2.7×10−3
Mo-99		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
N-13	Nitrogen (7)	1.0×10²	2.7×10−9	1.0×10⁹	2.7×10−2
Na-22	Sodium (11)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Na-24		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Nb-93m	Niobium (41)	1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
Nb-94		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Nb-95		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Nb-97		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Nd-147	Neodymium (60)	1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Nd-149		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Ni-59	Nickel (28)	1.0×10⁴	2.7×10−7	1.0×10⁸	2.7×10−3
Ni-63		1.0×10⁵	2.7×10−6	1.0×10⁸	2.7×10−3
Ni-65		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Np-235	Neptunium (93)	1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Np-236 (short-lived)		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Np-236 (long-lived)		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Np-237 (b)		1.0	2.7×10−11	1.0×10³	2.7×10−8
Np-239		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Os-185	Osmium (76)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Os-191		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Os-191m		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Os-193		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Os-194		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
P-32	Phosphorus (15)	1.0×10³	2.7×10−8	1.0×10⁵	2.7×10−6
P-33		1.0×10⁵	2.7×10−6	1.0×10⁸	2.7×10−3
Pa-230	Protactinium (91)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Pa-231		1.0	2.7×10−11	1.0×10³	2.7×10−8
Pa-233		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Pb-201	Lead (82)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Pb-202		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Pb-203		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Pb-205		1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
Pb-210 (b)		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Pb-212 (b)		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Pd-103	Palladium (46)	1.0×10³	2.7×10−8	1.0×10⁸	2.7×10−3
Pd-107		1.0×10⁵	2.7×10−6	1.0×10⁸	2.7×10−3
Pd-109		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Pm-143	Promethium (61)	1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Pm-144		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Pm-145		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Pm-147		1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
Pm-148m		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Pm-149		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Pm-151		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Po-210	Polonium (84)	1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Pr-142	Praseodymium (59)	1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Pr-143		1.0×10⁴	2.7×10−7	1.0×10⁶	2.7×10−5
Pt-188	Platinum (78)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Pt-191		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Pt-193		1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
Pt-193m		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Pt-195m		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Pt-197		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Pt-197m		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Pu-236	Plutonium (94)	1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Pu-237		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Pu-238		1.0	2.7×10−11	1.0×10⁴	2.7×10−7
Pu-239		1.0	2.7×10−11	1.0×10⁴	2.7×10−7
Pu-240		1.0	2.7×10−11	1.0×10³	2.7×10−8
Pu-241		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Pu-242		1.0	2.7×10−11	1.0×10⁴	2.7×10−7
Pu-244		1.0	2.7×10−11	1.0×10⁴	2.7×10−7
Ra-223 (b)	Radium (88)	1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Ra-224 (b)		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Ra-225		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Ra-226 (b)		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Ra-228 (b)		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Rb-81	Rubidium (37)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Rb-83		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Rb-84		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Rb-86		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Rb-87		1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
Rb(nat)		1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
Re-184	Rhenium (75)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Re-184m		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Re-186		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Re-187		1.0×10⁶	2.7×10−5	1.0×10⁹	2.7×10−2
Re-188		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Re-189		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Re(nat)		1.0×10⁶	2.7×10−5	1.0×10⁹	2.7×10−2
Rh-99	Rhodium (45)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Rh-101		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Rh-102		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Rh-102m		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Rh-103m		1.0×10⁴	2.7×10−7	1.0×10⁸	2.7×10−3
Rh-105		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Rn-222 (b)	Radon (86)	1.0×10¹	2.7×10−10	1.0×10⁸	2.7×10−3
Ru-97	Ruthenium (44)	1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Ru-103		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Ru-105		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Ru-106 (b)		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
S-35	Sulphur (16)	1.0×10⁵	2.7×10−6	1.0×10⁸	2.7×10−3
Sb-122	Antimony (51)	1.0×10²	2.7×10−9	1.0×10⁴	2.7×10−7
Sb-124		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Sb-125		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Sb-126		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Sc-44	Scandium (21)	1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Sc-46		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Sc-47		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Sc-48		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Se-75	Selenium (34)	1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Se-79		1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
Si-31	Silicon (14)	1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Si-32		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Sm-145	Samarium (62)	1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Sm-147		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Sm-151		1.0×10⁴	2.7×10−7	1.0×10⁸	2.7×10−3
Sm-153		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Sn-113	Tin (50)	1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Sn-117m		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Sn-119m		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Sn-121m		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Sn-123		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Sn-125		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Sn-126		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Sr-82	Strontium (38)	1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Sr-85		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Sr-85m		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Sr-87m		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Sr-89		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Sr-90 (b)		1.0×10²	2.7×10−9	1.0×10⁴	2.7×10−7
Sr-91		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Sr-92		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
T(H-3)	Tritium (1)	1.0×10⁶	2.7×10−5	1.0×10⁹	2.7×10−2
Ta-178 (long-lived)	Tantalum (73)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Ta-179		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Ta-182		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Tb-157	Terbium (65)	1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
Tb-158		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Tb-160		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Tc-95m	Technetium (43)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Tc-96		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Tc-96m		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Tc-97		1.0×10³	2.7×10−8	1.0×10⁸	2.7×10−3
Tc-97m		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Tc-98		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Tc-99		1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
Tc-99m		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Te-121	Tellurium (52)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Te-121m		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Te-123m		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Te-125m		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Te-127		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Te-127m		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Te-129		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Te-129m		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Te-131m		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Te-132		1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Th-227	Thorium (90)	1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Th-228 (b)		1.0	2.7×10−11	1.0×10⁴	2.7×10−7
Th-229 (b)		1.0	2.7×10−11	1.0×10³	2.7×10−8
Th-230		1.0	2.7×10−11	1.0×10⁴	2.7×10−7
Th-231		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Th-232		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
Th-234 (b)		1.0×10³	2.7×10−8	1.0×10⁵	2.7×10−6
Th (nat) (b)		1.0	2.7×10−11	1.0×10³	2.7×10−8
Ti-44	Titanium (22)	1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
Tl-200	Thallium (81)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Tl-201		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Tl-202		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Tl-204		1.0×10⁴	2.7×10−7	1.0×10⁴	2.7×10−7
Tm-167	Thulium (69)	1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Tm-170		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Tm-171		1.0×10⁴	2.7×10−7	1.0×10⁸	2.7×10−3
U-230 (fast lung absorption) (b),(d)	Uranium (92)	1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
U-230 (medium lung absorption) (e)		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
U-230 (slow lung absorption) (f)		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
U-232 (fast lung absorption) (b),(d)		1.0	2.7×10−11	1.0×10³	2.7×10−8
U-232 (medium lung absorption) (e)		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
U-232 (slow lung absorption) (f)		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
U-233 (fast lung absorption) (d)		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
U-233 (medium lung absorption) (e)		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
U-233 (slow lung absorption) (f)		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
U-234 (fast lung absorption) (d)		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
U-234 (medium lung absorption) (e)		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
U-234 (slow lung absorption) (f)		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
U-235 (all lung absorption types) (b),(d),(e),(f)		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
U-236 (fast lung absorption) (d)		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
U-236 (medium lung absorption) (e)		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
U-236 (slow lung absorption) (f)		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
U-238 (all lung absorption types) (b),(d),(e),(f)		1.0×10¹	2.7×10−10	1.0×10⁴	2.7×10−7
U (nat) (b)		1.0	2.7×10−11	1.0×10³	2.7×10−8
U (enriched to 20% or less)(g)		1.0	2.7×10−11	1.0×10³	2.7×10−8
U (dep)		1.0	2.7×10−11	1.0×10³	2.7×10−8
V-48	Vanadium (23)	1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6
V-49		1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
W-178	Tungsten (74)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
W-181		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
W-185		1.0×10⁴	2.7×10−7	1.0×10⁷	2.7×10−4
W-187		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
W-188		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Xe-122	Xenon (54)	1.0×10²	2.7×10−9	1.0×10⁹	2.7×10−2
Xe-123		1.0×10²	2.7×10−9	1.0×10⁹	2.7×10−2
Xe-127		1.0×10³	2.7×10−8	1.0×10⁵	2.7×10−6
Xe-131m		1.0×10⁴	2.7×10−7	1.0×10⁴	2.7×10−7
Xe-133		1.0×10³	2.7×10−8	1.0×10⁴	2.7×10−7
Xe-135		1.0×10³	2.7×10−8	1.0×10¹⁰	2.7×10−1
Y-87	Yttrium (39)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Y-88		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Y-90		1.0×10³	2.7×10−8	1.0×10⁵	2.7×10−6
Y-91		1.0×10³	2.7×10−8	1.0×10⁶	2.7×10−5
Y-91m		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Y-92		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Y-93		1.0×10²	2.7×10−9	1.0×10⁵	2.7×10−6
Yb-169	Ytterbium (70)	1.0×10²	2.7×10−9	1.0×10⁷	2.7×10−4
Yb-175		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Zn-65	Zinc (30)	1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Zn-69		1.0×10⁴	2.7×10−7	1.0×10⁶	2.7×10−5
Zn-69m		1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Zr-88	Zirconium (40)	1.0×10²	2.7×10−9	1.0×10⁶	2.7×10−5
Zr-93 (b)		1.0×10³	2.7×10−8	1.0×10⁷	2.7×10−4
Zr-95		1.0×10¹	2.7×10−10	1.0×10⁶	2.7×10−5
Zr-97 (b)		1.0×10¹	2.7×10−10	1.0×10⁵	2.7×10−6

**Table A-3—General Values for A1 and A2**
Contents	A1		A2		Activity concentration for exempt material(Bq/g)	Activity concentration for exempt material(Ci/g)	Activity limits for exempt consignments(Bq)	Activity limits for exempt consignments(Ci)
Contents	(TBq)	(Ci)	(TBq)	(Ci)	Activity concentration for exempt material(Bq/g)	Activity concentration for exempt material(Ci/g)	Activity limits for exempt consignments(Bq)	Activity limits for exempt consignments(Ci)
Only beta or gamma emitting radionuclides are known to be present	1 × 10−1	2.7 × 10⁰	2 × 10−2	5.4 × 10−1	1 × 10¹	2.7 × 10−10	1 × 10⁴	2.7 × 10−7
Only alpha emitting radionuclides are known to be present	2 × 10−1	5.4 × 10⁰	9 × 10−5	2.4 × 10−3	1 × 10−1	2.7 × 10−12	1 × 10³	2.7 × 10−8
No relevant data are available	1 × 10−3	2.7 × 10−2	9 × 10−5	2.4 × 10−3	1 × 10−1	2.7 × 10−12	1 × 10³	2.7 × 10−8

**Table A-4—Activity-mass Relationships for Uranium**
Uranium Enrichment ¹ wt % U-235 present	Specific Activity
Uranium Enrichment ¹ wt % U-235 present	TBq/g	Ci/g
¹ The figures for uranium include representative values for the activity of the uranium-234 that is concentrated during the enrichment process.
0.45	1.8 × 10−8	5.0 × 10−7
0.72	2.6 × 10−8	7.1 × 10−7
1	2.8 × 10−8	7.6 × 10−7
1.5	3.7 × 10−8	1.0 × 10−6
5	1.0 × 10−7	2.7 × 10−6
10	1.8 × 10−7	4.8 × 10−6
20	3.7 × 10−7	1.0 × 10−5
35	7.4 × 10−7	2.0 × 10−5
50	9.3 × 10−7	2.5 × 10−5
90	2.2 × 10−6	5.8 × 10−5
93	2.6 × 10−6	7.0 × 10−5
95	3.4 × 10−6	9.1 × 10−5

[69 FR 3800, Jan. 26, 2004; 69 FR 58039, Sept. 29, 2004]

Title 10 published on 2013-01-01

The following are only the Rules published in the Federal Register after the published date of Title 10.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

2013-05-28; vol. 78 # 102 - Tuesday, May 28, 2013

78 FR - Physical Protection of Byproduct Material

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10 CFR Parts 20, 30, 32, 33, 34, 35, 36, 37, 39, 51, 71, and 73

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2013-03-19; vol. 78 # 53 - Tuesday, March 19, 2013

78 FR 16922 - Physical Protection of Byproduct Material

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Effective Date: This final rule is effective on May 20, 2013. Compliance Date: Compliance with this final rule is required on March 19, 2014.

10 CFR Parts 20, 30, 32, 33, 34, 35, 36, 37, 39, 51, 71, and 73

Summary

The U.S. Nuclear Regulatory Commission (NRC) is amending its regulations to establish security requirements for the use and transport of category 1 and category 2 quantities of radioactive material. The NRC considers these quantities to be risk significant and, therefore, to warrant additional protection. Category 1 and category 2 thresholds are based on the quantities established by the International Atomic Energy Agency (IAEA) in its Code of Conduct on the Safety and Security of Radioactive Sources, which the NRC endorses. The objective of this final rule is to provide reasonable assurance of preventing the theft or diversion of category 1 and category 2 quantities of radioactive material. The regulations also include security requirements for the transportation of irradiated reactor fuel that weighs 100 grams or less in net weight of irradiated fuel. The final rule affects any licensee that possesses an aggregated category 1 or category 2 quantity of radioactive material, any licensee that transports these materials using ground transportation, and any licensee that transports small quantities of irradiated reactor fuel. The rule also considers a petition for rulemaking (PRM-71-13) submitted by the State of Washington that requested that the NRC adopt the use of global positioning satellite tracking as a national requirement for vehicles transporting highly radioactive mobile or portable radioactive devices.

Title 10 published on 2013-01-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 10 CFR 71 after this date.

2013-05-28; vol. 78 # 102 - Tuesday, May 28, 2013

78 FR - Physical Protection of Byproduct Material

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10 CFR Parts 20, 30, 32, 33, 34, 35, 36, 37, 39, 51, 71, and 73

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2013-05-16; vol. 78 # 95 - Thursday, May 16, 2013

78 FR 28988 - Revisions to Transportation Safety Requirements and Harmonization With International Atomic Energy Agency Transportation Requirements

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Proposed rule.

Submit comments by July 30, 2013. Submit comments specific to the information collections aspect of this proposed rule by June 17, 2013. Comments received after these dates will be considered if it is practical to do so, but the NRC is able to assure consideration only for comments received on or before these dates.

10 CFR Part 71

Summary

The U.S. Nuclear Regulatory Commission (NRC), in consultation with the U.S. Department of Transportation (DOT), is proposing to amend its regulations for the packaging and transportation of radioactive material. These amendments would make NRC regulations conform to revisions to the International Atomic Energy Agency (IAEA) regulations for the international transportation of radioactive material and maintain consistency with DOT regulations. These changes are necessary to maintain a consistent regulatory framework for the transportation and packaging of radioactive material. These changes would make the regulation of quality assurance programs more efficient by allowing changes that do not change quality assurance approval holder commitments to be made without prior NRC approval, and extending the duration of quality assurance program approvals. These changes would clarify the responsibilities of general licensees and further limit the shipping of fissile material under a general license. The parallel DOT proposed rulemaking was published in the Federal Register on August 12, 2011.

78 FR 29016 - Establishing Quality Assurance Programs for Packaging Used in Transport of Radioactive Material

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Draft regulatory guide; request for comment.

Submit comments by July 30, 2013. Comments received after this date will be considered if it is practical to do so, but the NRC is able to ensure consideration only for comments received on or before this date. Although a time limit is given, comments and suggestions in connection with items for inclusion in guides currently being developed or improvements in all published guides are encouraged at any time.

10 CFR Part 71

Summary

The U.S. Nuclear Regulatory Commission (NRC) is proposing to amend its regulations for the packaging and transportation of radioactive material. The NRC is issuing for public comment draft regulatory guide (DG), DG-7009, “Establishing Quality Assurance Programs for Packaging Used in Transport of Radioactive Material.” This draft regulatory guide describes a proposed method that the NRC staff considers acceptable for use in complying with the NRC's proposed amendments to its regulations on quality assurance programs related to transport of radioactive materials.

2013-03-19; vol. 78 # 53 - Tuesday, March 19, 2013

78 FR 16922 - Physical Protection of Byproduct Material

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Effective Date: This final rule is effective on May 20, 2013. Compliance Date: Compliance with this final rule is required on March 19, 2014.

10 CFR Parts 20, 30, 32, 33, 34, 35, 36, 37, 39, 51, 71, and 73

Summary

2013-01-17; vol. 78 # 12 - Thursday, January 17, 2013

78 FR 3853 - Retrievability, Cladding Integrity and Safe Handling of Spent Fuel at an Independent Spent Fuel Storage Installation and During Transportation

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Request for comments for potential rulemaking.

Submit comments by March 18, 2013. Comments received after the comment period deadline will be considered if it is practical to do so, but the NRC is only able to ensure consideration of comments received on or before the end of the public comment period.

10 CFR Parts 71 and 72

Summary

The regulations for packaging and transport of spent nuclear fuel are separate from requirements for storage of spent nuclear fuel. Because these regulatory schemes are separate, there is no requirement that loaded storage casks also meet transportation requirements. Integration of storage and transport regulations could enable a more predictable transition from storage to transport by potentially minimizing future handling of spent fuel and uncertainty as to whether loaded storage casks may be transported from the storage location. As part of its evaluation of integration and compatibility between storage and transportation regulations, the U.S. Nuclear Regulatory Commission (NRC) staff is reviewing its policies, regulations, guidance, and technical needs in several key areas, such as: retrievability, cladding integrity, and safe handling of spent fuel; criticality safety features and requirements for spent fuel transportation; and aging management and qualification of dual-purpose canisters and components after long-term storage. The NRC staff is reviewing the potential policy issues and requirements related to retrievability, cladding integrity, and safe handling of spent fuel as the lead issue for evaluating compatibility of storage and transportation regulations. As part of its evaluation of integration and compatibility between NRC's storage regulations and transportation regulations, the NRC is issuing this request for comment (available in the NRC's Agencywide Documents Access and Management System (ADAMS) under Accession No. ML12293A434) as the staff begins its review of NRC policies, guidance, and technical needs related to retrievability, cladding integrity, and safe handling of spent fuel.

10 CFR 71, Appendix A to Part 71 - Determination of A1 and A2

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