WAC 246-231-200. Appendix A — Determination of A1 and A2

(1) Values of A1 and A2 for individual radionuclides, which are the basis for many activity limits elsewhere in these regulations, are given in this section, 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 or A2 are unlimited, it is for radiation control purposes only. For nuclear criticality safety, some materials are subject to controls placed on fissile material. (2)(a) For individual radionuclides whose identities are known, but which are not listed in this section, Table A-1, the A1 and A2 values contained in this section, Table A-3 may be used. Otherwise, the licensee shall obtain prior NRC approval of the A1 and A2 values for radionuclides not listed in this section, Table A-1, before shipping the material. (b) For individual radionuclides whose identities are known, but which are not listed in this section, Table A-2, the exempt material activity concentration and exempt consignment activity values contained in this section, Table A-3 may be used. Otherwise, the licensee shall obtain prior NRC approval of the exempt material activity concentration and exempt consignment activity values for radionuclides not listed in this section, Table A-2, before shipping the material. (c) The licensee shall submit requests for prior approval, described under (a) and (b) of this subsection, to NRC in accordance with 10 C.F.R. 71.1. (3) In the calculations of A1 and A2 for a radionuclide not in this section, 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 or 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. (4) 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 in special form, and A 1 (i) is the A 1 value for radionuclide i. (b) For normal form radioactive material, the maximum quantity transported in a Type A package: Where B(i) is the activity of radionuclide i in normal form, and A 2 (i) is the A 2 value for radionuclide i. (c) If the package contains both special and normal form radioactive material, the activity that may be transported in a Type A package is as follows: Where B(i) is the activity of radionuclide i as special form radioactive material, A 1 (i) is the A 1 value for radionuclide i, C(j) is the activity of radionuclide j as normal form radioactive material, and A 2 (j) is the A 2 value for radionuclide j. (d) 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. (e) 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. (f) 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](i) is the activity concentration for exempt material containing radionuclide i. (g) 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(i) is the activity limit for exempt consignments for radionuclide i. (5)(a) 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 subsection (4) 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 for the alpha emitters and beta/gamma emitters. (b) 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 [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 paragraph IV of this appendix. Groups may be based on the total alpha activity and the total beta/gamma activity when these are known, using the lowest [A] or A values for the alpha emitters and beta/gamma emitters, respectively. Table A-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 (TBq/g) (Ci/g) Ac-225 (a) Actinium (89) 8.0X10 -1 2.2X10 1 6.0X10 -3 1.6X10 -1 2.1X10 3 5.8X10 4 Ac-227 (a) 9.0X10 -1 2.4X10 1 9.0X10 -5 2.4X10 -3 2.7 7.2X10 1 Ac-228 6.0X10 -1 1.6X10 1 5.0X10 -1 1.4X10 1 8.4X10 4 2.2X10 6 Ag-105 Silver (47) 2.0 5.4X10 1 2.0 5.4X10 1 1.1X10 3 3.0X10 4 Ag-108m (a) 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 9.7X10 -1 2.6X10 1 Ag-110m (a) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 1.8X10 2 4.7X10 3 Ag-111 2.0 5.4X10 1 6.0X10 -1 1.6X10 1 5.8X10 3 1.6X10 5 Al-26 Aluminum (13) 1.0X10 -1 2.7 1.0X10 -1 2.7 7.0X10 -4 1.9X10 -2 Am-241 Americium (95) 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 1.3X10 -1 3.4 Am-242m (a) 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 3.6X10 -1 1.0X10 1 Am-243 (a) 5.0 1.4X10 2 1.0X10 -3 2.7X10 -2 7.4X10 -3 2.0X10 -1 Ar-37 Argon (18) 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 3.7X10 3 9.9X10 4 Ar-39 4.0X10 1 1.1X10 3 2.0X10 1 5.4X10 2 1.3 3.4X10 1 Ar-41 3.0X10 -1 8.1 3.0X10 -1 8.1 1.5X10 6 4.2X10 7 As-72 Arsenic (33) 3.0X10 -1 8.1 3.0X10 -1 8.1 6.2X10 4 1.7X10 6 As-73 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 8.2X10 2 2.2X10 4 As-74 1.0 2.7X10 1 9.0X10 -1 2.4X10 1 3.7X10 3 9.9X10 4 As-76 3.0X10 -1 8.1 3.0X10 -1 8.1 5.8X10 4 1.6X10 6 As-77 2.0X10 1 5.4X10 2 7.0X10 -1 1.9X10 1 3.9X10 4 1.0X10 6 At-211 (a) Astatine (85) 2.0X10 1 5.4X10 2 5.0X10 -1 1.4X10 1 7.6X10 4 2.1X10 6 Au-193 Gold (79) 7.0 1.9X10 2 2.0 5.4X10 1 3.4X10 4 9.2X10 5 Au-194 1.0 2.7X10 1 1.0 2.7X10 1 1.5X10 4 4.1X10 5 Au-195 1.0X10 1 2.7X10 2 6.0 1.6X10 2 1.4X10 2 3.7X10 3 Au-198 1.0 2.7X10 1 6.0X10 -1 1.6X10 1 9.0X10 3 2.4X10 5 Au-199 1.0X10 1 2.7X10 2 6.0X10 -1 1.6X10 1 7.7X10 3 2.1X10 5 Ba-131 (a) Barium (56) 2.0 5.4X10 1 2.0 5.4X10 1 3.1X10 3 8.4X10 4 Ba-133 3.0 8.1X10 1 3.0 8.1X10 1 9.4 2.6X10 2 Ba-133m 2.0X10 1 5.4X10 2 6.0X10 -1 1.6X10 1 2.2X10 4 6.1X10 5 Ba-140 (a) 5.0X10 -1 1.4X10 1 3.0X10 -1 8.1 2.7X10 3 7.3X10 4 Be-7 Beryllium (4) 2.0X10 1 5.4X10 2 2.0X10 1 5.4X10 2 1.3X10 4 3.5X10 5 Be-10 4.0X10 1 1.1X10 3 6.0X10 -1 1.6X10 1 8.3X10 -4 2.2X10 -2 Bi-205 Bismuth (83) 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 1.5X10 3 4.2X10 4 Bi-206 3.0X10 -1 8.1 3.0X10 -1 8.1 3.8X10 3 1.0X10 5 Bi-207 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 1.9 5.2X10 1 Bi-210 1.0 2.7X10 1 6.0X10 -1 1.6X10 1 4.6X10 3 1.2X10 5 Bi-210m (a) 6.0X10 -1 1.6X10 1 2.0X10 -2 5.4X10 -1 2.1X10 -5 5.7X10 -4 Bi-212 (a) 7.0X10 -1 1.9X10 1 6.0X10 -1 1.6X10 1 5.4X10 5 1.5X10 7 Bk-247 Berkelium (97) 8.0 2.2X10 2 8.0X10 -4 2.2X10 -2 3.8X10 -2 1.0 Bk-249 (a) 4.0X10 1 1.1X10 3 3.0X10 -1 8.1 6.1X10 1 1.6X10 3 Br-76 Bromine (35) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 9.4X10 4 2.5X10 6 Br-77 3.0 8.1X10 1 3.0 8.1X10 1 2.6X10 4 7.1X10 5 Br-82 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 4.0X10 4 1.1X10 6 C-11 Carbon (6) 1.0 2.7X10 1 6.0X10 -1 1.6X10 1 3.1X10 7 8.4X10 8 C-14 4.0X10 1 1.1X10 3 3.0 8.1X10 1 1.6X10 -1 4.5 Ca-41 Calcium (20) Unlimited Unlimited Unlimited Unlimited 3.1X10 -3 8.5X10 -2 Ca-45 4.0X10 1 1.1X10 3 1.0 2.7X10 1 6.6X10 2 1.8X10 4 Ca-47 (a) 3.0 8.1X10 1 3.0X10 -1 8.1 2.3X10 4 6.1X10 5 Cd-109 Cadmium (48) 3.0X10 1 8.1X10 2 2.0 5.4X10 1 9.6X10 1 2.6X10 3 Cd-113m 4.0X10 1 1.1X10 3 5.0X10 -1 1.4X10 1 8.3 2.2X10 2 Cd-115 (a) 3.0 8.1X10 1 4.0X10 -1 1.1X10 1 1.9X10 4 5.1X10 5 Cd-115m 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 9.4X10 2 2.5X10 4 Ce-139 Cerium (58) 7.0 1.9X10 2 2.0 5.4X10 1 2.5X10 2 6.8X10 3 Ce-141 2.0X10 1 5.4X10 2 6.0X10 -1 1.6X10 1 1.1X10 3 2.8X10 4 Ce-143 9.0X10 -1 2.4X10 1 6.0X10 -1 1.6X10 1 2.5X10 4 6.6X10 5 Ce-144 (a) 2.0X10 -1 5.4 2.0X10 -1 5.4 1.2X10 2 3.2X10 3 Cf-248 Californium (98) 4.0X10 1 1.1X10 3 6.0X10 -3 1.6X10 -1 5.8X10 1 1.6X10 3 Cf-249 3.0 8.1X10 1 8.0X10 -4 2.2X10 -2 1.5X10 -1 4.1 Cf-250 2.0X10 1 5.4X10 2 2.0X10 -3 5.4X10 -2 4.0 1.1X10 2 Cf-251 7.0 1.9X10 2 7.0X10 -4 1.9X10 -2 5.9X10 -2 1.6 Cf-252 1.0X10 -1 2.7 3.0X10 -3 8.1X10 -2 2.0X10 1 5.4X10 2 Cf-253 (a) 4.0X10 1 1.1X10 3 4.0X10 -2 1.1 1.1X10 3 2.9X10 4 Cf-254 1.0X10 -3 2.7X10 -2 1.0X10 -3 2.7X10 -2 3.1X10 2 8.5X10 3 Cl-36 Chlorine (17) 1.0X10 1 2.7X10 2 6.0X10 -1 1.6X10 1 1.2X10 -3 3.3X10 -2 Cl-38 2.0X10 -1 5.4 2.0X10 -1 5.4 4.9X10 6 1.3X10 8 Cm-240 Curium (96) 4.0X10 1 1.1X10 3 2.0X10 -2 5.4X10 -1 7.5X10 2 2.0X10 4 Cm-241 2.0 5.4X10 1 1.0 2.7X10 1 6.1X10 2 1.7X10 4 Cm-242 4.0X10 1 1.1X10 3 1.0X10 -2 2.7X10 -1 1.2X10 2 3.3X10 3 Cm-243 9.0 2.4X10 2 1.0X10 -3 2.7X10 -2 1.9X10 -3 5.2X10 1 Cm-244 2.0X10 1 5.4X10 2 2.0X10 -3 5.4X10 -2 3.0 8.1X10 1 Cm-245 9.0 2.4X10 2 9.0X10 -4 2.4X10 -2 6.4X10 -3 1.7X10 -1 Cm-246 9.0 2.4X10 2 9.0X10 -4 2.4X10 -2 1.1X10 -2 3.1X10 -1 Cm-247 (a) 3.0 8.1X10 1 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 1.4X10 1 5.0X10 -1 1.4X10 1 1.1X10 5 3.1X10 6 Co-56 3.0X10 -1 8.1 3.0X10 -1 8.1 1.1X10 3 3.0X10 4 Co-57 1.0X10 1 2.7X10 2 1.0X10 1 2.7X10 2 3.1X10 2 8.4X10 3 Co-58 1.0 2.7X10 1 1.0 2.7X10 1 1.2X10 3 3.2X10 4 Co-58m 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 2.2X10 5 5.9X10 6 Co-60 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 4.2X10 1 1.1X10 3 Cr-51 Chromium (24) 3.0X10 1 8.1X10 2 3.0X10 1 8.1X10 2 3.4X10 3 9.2X10 4 Cs-129 Cesium (55) 4.0 1.1X10 2 4.0 1.1X10 2 2.8X10 4 7.6X10 5 Cs-131 3.0X10 1 8.1X10 2 3.0X10 1 8.1X10 2 3.8X10 3 1.0X10 5 Cs-132 1.0 2.7X10 1 1.0 2.7X10 1 5.7X10 3 1.5X10 5 Cs-134 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 4.8X10 1 1.3X10 3 Cs-134m 4.0X10 1 1.1X10 3 6.0X10 -1 1.6X10 1 3.0X10 5 8.0X10 6 Cs-135 4.0X10 1 1.1X10 3 1.0 2.7X10 1 4.3X10 -5 1.2X10 -3 Cs-136 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 2.7X10 3 7.3X10 4 Cs-137 (a) 2.0 5.4X10 1 6.0X10 -1 1.6X10 1 3.2 8.7X10 1 Cu-64 Copper (29) 6.0 1.6X10 2 1.0 2.7X10 1 1.4X10 5 3.9X10 6 Cu-67 1.0X10 1 2.7X10 2 7.0X10 -1 1.9X10 1 2.8X10 4 7.6X10 5 Dy-159 Dysprosium (66) 2.0X10 1 5.4X10 2 2.0X10 1 5.4X10 2 2.1X10 2 5.7X10 3 Dy-165 9.0X10 -1 2.4X10 1 6.0X10 -1 1.6X10 1 3.0X10 5 8.2X10 6 Dy-166 (a) 9.0X10 -1 2.4X10 1 3.0X10 -1 8.1 8.6X10 3 2.3X10 5 Er-169 Erbium (68) 4.0X10 1 1.1X10 3 1.0 2.7X10 1 3.1X10 3 8.3X10 4 Er-171 8.0X10 -1 2.2X10 1 5.0X10 -1 1.4X10 1 9.0X10 4 2.4X10 6 Eu-147 Europium (63) 2.0 5.4X10 1 2.0 5.4X10 1 1.4X10 3 3.7X10 4 Eu-148 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 6.0X10 2 1.6X10 4 Eu-149 2.0X10 1 5.4X10 2 2.0X10 1 5.4X10 2 3.5X10 2 9.4X10 3 Eu-150 (short lived) 2.0 5.4X10 1 7.0X10 -1 1.9X10 1 6.1X10 4 1.6X10 6 Eu-150 (long lived) 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 6.1X10 4 1.6X10 6 Eu-152 1.0 2.7X10 1 1.0 2.7X10 1 6.5 1.8X10 2 Eu-152m 8.0X10 -1 2.2X10 1 8.0X10 -1 2.2X10 1 8.2X10 4 2.2X10 6 Eu-154 9.0X10 -1 2.4X10 1 6.0X10 -1 1.6X10 1 9.8 2.6X10 2 Eu-155 2.0X10 1 5.4X10 2 3.0 8.1X10 1 1.8X10 1 4.9X10 2 Eu-156 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 2.0X10 3 5.5X10 4 F-18 Fluorine (9) 1.0 2.7X10 1 6.0X10 -1 1.6X10 1 3.5X10 6 9.5X10 7 Fe-52 (a) Iron (26) 3.0X10 -1 8.1 3.0X10 -1 8.1 2.7X10 5 7.3X10 6 Fe-55 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 8.8X10 1 2.4X10 3 Fe-59 9.0X10 -1 2.4X10 1 9.0X10 -1 2.4X10 1 1.8X10 3 5.0X10 4 Fe-60 (a) 4.0X10 1 1.1X10 3 2.0X10 -1 5.4 7.4X10 -4 2.0X10 -2 Ga-67 Gallium (31) 7.0 1.9X10 2 3.0 8.1X10 1 2.2X10 4 6.0X10 5 Ga-68 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 1.5X10 6 4.1X10 7 Ga-72 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 1.1X10 5 3.1X10 6 Gd-146 (a) Gadolinium (64) 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 6.9X10 2 1.9X10 4 Gd-148 2.0X10 1 5.4X10 2 2.0X10 -3 5.4X10 -2 1.2 3.2X10 1 Gd-153 1.0X10 1 2.7X10 2 9.0 2.4X10 2 1.3X10 2 3.5X10 3 Gd-159 3.0 8.1X10 1 6.0X10 -1 1.6X10 1 3.9X10 4 1.1X10 6 Ge-68 (a) Germanium (32) 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 2.6X10 2 7.1X10 3 Ge-71 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 5.8X10 3 1.6X10 5 Ge-77 3.0X10 -1 8.1 3.0X10 -1 8.1 1.3X10 5 3.6X10 6 Hf-172 (a) Hafnium (72) 6.0X10 -1 1.6X10 1 6.0X10 -1 1.6X10 1 4.1X10 1 1.1X10 3 Hf-175 3.0 8.1X10 1 3.0 8.1X10 1 3.9X10 2 1.1X10 4 Hf-181 2.0 5.4X10 1 5.0X10 -1 1.4X10 1 6.3X10 2 1.7X10 4 Hf-182 Unlimited Unlimited Unlimited Unlimited 8.1X10 -6 2.2X10 -4 Hg-194 (a) Mercury (80) 1.0 2.7X10 1 1.0 2.7X10 1 1.3X10 -1 3.5 Hg-195m (a) 3.0 8.1X10 1 7.0X10 -1 1.9X10 1 1.5X10 4 4.0X10 5 Hg-197 2.0X10 1 5.4X10 2 1.0X10 1 2.7X10 2 9.2X10 3 2.5X10 5 Hg-197m 1.0X10 1 2.7X10 2 4.0X10 -1 1.1X10 1 2.5X10 4 6.7X10 5 Hg-203 5.0 1.4X10 2 1.0 2.7X10 1 5.1X10 2 1.4X10 4 Ho-166 Holmium (67) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 2.6X10 4 7.0X10 5 Ho-166m 6.0X10 -1 1.6X10 1 5.0X10 -1 1.4X10 1 6.6X10 -2 1.8 I-123 Iodine (53) 6.0 1.6X10 2 3.0 8.1X10 1 7.1X10 4 1.9X10 6 I-124 1.0 2.7X10 1 1.0 2.7X10 1 9.3X10 3 2.5X10 5 I-125 2.0X10 1 5.4X10 2 3.0 8.1X10 1 6.4X10 2 1.7X10 4 I-126 2.0 5.4X10 1 1.0 2.7X10 1 2.9X10 3 8.0X10 4 I-129 Unlimited Unlimited Unlimited Unlimited 6.5X10 -6 1.8X10 -4 I-131 3.0 8.1X10 1 7.0X10 -1 1.9X10 1 4.6X10 3 1.2X10 5 I-132 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 3.8X10 5 1.0X10 7 I-133 7.0X10 -1 1.9X10 1 6.0X10 -1 1.6X10 1 4.2X10 4 1.1X10 6 I-134 3.0X10 -1 8.1 3.0X10 -1 8.1 9.9X10 5 2.7X10 7 I-135 (a) 6.0X10 -1 1.6X10 1 6.0X10 -1 1.6X10 1 1.3X10 5 3.5X10 6 In-111 Indium (49) 3.0 8.1X10 1 3.0 8.1X10 1 1.5X10 4 4.2X10 5 In-113m 4.0 1.1X10 2 2.0 5.4X10 1 6.2X10 5 1.7X10 7 In-114m (a) 1.0X10 1 2.7X10 2 5.0X10 -1 1.4X10 1 8.6X10 2 2.3X10 4 In-115m 7.0 1.9X10 2 1.0 2.7X10 1 2.2X10 5 6.1X10 6 Ir-189 (a) Iridium (77) 1.0X10 1 2.7X10 2 1.0X10 1 2.7X10 2 1.9X10 3 5.2X10 4 Ir-190 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 2.3X10 3 6.2X10 4 Ir-192 c 1.0 c 2.7X10 1 6.0X10 -1 1.6X10 1 3.4X10 2 9.2X10 3 Ir-194 3.0X10 -1 8.1 3.0X10 -1 8.1 3.1X10 4 8.4X10 5 K-40 Potassium (19) 9.0X10 -1 2.4X10 1 9.0X10 -1 2.4X10 1 2.4X10 -7 6.4X10 -6 K-42 2.0X10 -1 5.4 2.0X10 -1 5.4 2.2X10 5 6.0X10 6 K-43 7.0X10 -1 1.9X10 1 6.0X10 -1 1.6X10 1 1.2X10 5 3.3X10 6 Kr-79 Krypton (36) 4.0 1.1X10 2 2.0 5.4X10 1 4.2X10 4 1.1X10 6 Kr-81 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 7.8X10 -4 2.1X10 -2 Kr-85 1.0X10 1 2.7X10 2 1.0X10 1 2.7X10 2 1.5X10 1 3.9X10 2 Kr-85m 8.0 2.2X10 2 3.0 8.1X10 1 3.0X10 5 8.2X10 6 Kr-87 2.0X10 -1 5.4 2.0X10 -1 5.4 1.0X10 6 2.8X10 7 La-137 Lanthanum (57) 3.0X10 1 8.1X10 2 6.0 1.6X10 2 1.6X10 -3 4.4X10 -2 La-140 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 2.1X10 4 5.6X10 5 Lu-172 Lutetium (71) 6.0X10 -1 1.6X10 1 6.0X10 -1 1.6X10 1 4.2X10 3 1.1X10 5 Lu-173 8.0 2.2X10 2 8.0 2.2X10 2 5.6X10 1 1.5X10 3 Lu-174 9.0 2.4X10 2 9.0 2.4X10 2 2.3X10 1 6.2X10 2 Lu-174m 2.0X10 1 5.4X10 2 1.0X10 1 2.7X10 2 2.0X10 2 5.3X10 3 Lu-177 3.0X10 1 8.1X10 2 7.0X10 -1 1.9X10 1 4.1X10 3 1.1X10 5 Mg-28 (a) Magnesium (12) 3.0X10 -1 8.1 3.0X10 -1 8.1 2.0X10 5 5.4X10 6 Mn-52 Manganese (25) 3.0X10 -1 8.1 3.0X10 -1 8.1 1.6X10 4 4.4X10 5 Mn-53 Unlimited Unlimited Unlimited Unlimited 6.8X10 -5 1.8X10 -3 Mn-54 1.0 2.7X10 1 1.0 2.7X10 1 2.9X10 2 7.7X10 3 Mn-56 3.0X10 -1 8.1 3.0X10 -1 8.1 8.0X10 5 2.2X10 7 Mo-93 Molybdenum (42) 4.0X10 1 1.1X10 3 2.0X10 1 5.4X10 2 4.1X10 -2 1.1 Mo-99 (a) (h) 1.0 2.7X10 1 6.0X10 -1 1.6X10 1 1.8X10 4 4.8X10 5 N-13 Nitrogen (7) 9.0X10 -1 2.4X10 1 6.0X10 -1 1.6X10 1 5.4X10 7 1.5X10 9 Na-22 Sodium (11) 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 2.3X10 2 6.3X10 3 Na-24 2.0X10 -1 5.4 2.0X10 -1 5.4 3.2X10 5 8.7X10 6 Nb-93m Niobium (41) 4.0X10 1 1.1X10 3 3.0X10 1 8.1X10 2 8.8 2.4X10 2 Nb-94 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 6.9X10 -3 1.9X10 -1 Nb-95 1.0 2.7X10 1 1.0 2.7X10 1 1.5X10 3 3.9X10 4 Nb-97 9.0X10 -1 2.4X10 1 6.0X10 -1 1.6X10 1 9.9X10 5 2.7X10 7 Nd-147 Neodymium (60) 6.0 1.6X10 2 6.0X10 -1 1.6X10 1 3.0X10 3 8.1X10 4 Nd-149 6.0X10 -1 1.6X10 1 5.0X10 -1 1.4X10 1 4.5X10 5 1.2X10 7 Ni-59 Nickel (28) Unlimited Unlimited Unlimited Unlimited 3.0X10 -3 8.0X10 -2 Ni-63 4.0X10 1 1.1X10 3 3.0X10 1 8.1X10 2 2.1 5.7X10 1 Ni-65 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 7.1X10 5 1.9X10 7 Np-235 Neptunium (93) 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 5.2X10 1 1.4X10 3 Np-236 (short-lived) 2.0X10 1 5.4X10 2 2.0 5.4X10 1 4.7X10 -4 1.3X10 -2 Np-236 (long-lived) 9.0 2.4X10 2 2.0X10 -2 5.4X10 -1 4.7X10 -4 1.3X10 -2 Np-237 2.0X10 1 5.4X10 2 2.0X10 -3 5.4X10 -2 2.6X10 -5 7.1X10 -4 Np-239 7.0 1.9X10 2 4.0X10 -1 1.1X10 1 8.6X10 3 2.3X10 5 Os-185 Osmium (76) 1.0 2.7X10 1 1.0 2.7X10 1 2.8X10 2 7.5X10 3 Os-191 1.0X10 1 2.7X10 2 2.0 5.4X10 1 1.6X10 3 4.4X10 4 Os-191m 4.0X10 1 1.1X10 3 3.0X10 1 8.1X10 2 4.6X10 4 1.3X10 6 Os-193 2.0 5.4X10 1 6.0X10 -1 1.6X10 1 b2.0X10 4 5.3X10 5 Os-194 (a) 3.0X10 -1 8.1 3.0X10 -1 8.1 1.1X10 1 3.1X10 2 P-32 Phosphorus (15) 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 1.1X10 4 2.9X10 5 P-33 4.0X10 1 1.1X10 3 1.0 2.7X10 1 5.8X10 3 1.6X10 5 Pa-230 (a) Protactinium (91) 2.0 5.4X10 1 7.0X10 -2 1.9 1.2X10 3 3.3X10 4 Pa-231 4.0 1.1X10 2 4.0X10 -4 1.1X10 -2 1.7X10 -3 4.7X10 -2 Pa-233 5.0 1.4X10 2 7.0X10 -1 1.9X10 1 7.7X10 2 2.1X10 4 Pb-201 Lead (82) 1.0 2.7X10 1 1.0 2.7X10 1 6.2X10 4 1.7X10 6 Pb-202 4.0X10 1 1.1X10 3 2.0X10 1 5.4X10 2 1.2X10 -4 3.4X10 -3 Pb-203 4.0 1.1X10 2 3.0 8.1X10 1 1.1X10 4 3.0X10 5 Pb-205 Unlimited Unlimited Unlimited Unlimited 4.5X10 -6 1.2X10 -4 Pb-210 (a) 1.0 2.7X10 1 5.0X10 -2 1.4 2.8 7.6X10 1 Pb-212 (a) 7.0X10 -1 1.9X10 1 2.0X10 -1 5.4 5.1X10 4 1.4X10 6 Pd-103 (a) Palladium (46) 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 2.8X10 3 7.5X10 4 Pd-107 Unlimited Unlimited Unlimited Unlimited 1.9X10 -5 5.1X10 -4 Pd-109 2.0 5.4X10 1 5.0X10 -1 1.4X10 1 7.9X10 4 2.1X10 6 Pm-143 Promethium (61) 3.0 8.1X10 1 3.0 8.1X10 1 1.3X10 2 3.4X10 3 Pm-144 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 9.2X10 1 2.5X10 3 Pm-145 3.0X10 1 8.1X10 2 1.0X10 1 2.7X10 2 5.2 1.4X10 2 Pm-147 4.0X10 1 1.1X10 3 2.0 5.4X10 1 3.4X10 1 9.3X10 2 Pm-148m (a) 8.0X10 -1 2.2X10 1 7.0X10 -1 1.9X10 1 7.9X10 2 2.1X10 4 Pm-149 2.0 5.4X10 1 6.0X10 -1 1.6X10 1 1.5X10 4 4.0X10 5 Pm-151 2.0 5.4X10 1 6.0X10 -1 1.6X10 1 2.7X10 4 7.3X10 5 Po-210 Polonium (84) 4.0X10 1 1.1X10 3 2.0X10 -2 5.4X10 -1 1.7X10 2 4.5X10 3 Pr-142 Praseodymium (59) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 4.3X10 4 1.2X10 6 Pr-143 3.0 8.1X10 1 6.0X10 -1 1.6X10 1 2.5X10 3 6.7X10 4 Pt-188 (a) Platinum (78) 1.0 2.7X10 1 8.0X10 -1 2.2X10 1 2.5X10 3 6.8X10 4 Pt-191 4.0 1.1X10 2 3.0 8.1X10 1 8.7X10 3 2.4X10 5 Pt-193 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 1.4 3.7X10 1 Pt-193m 4.0X10 1 1.1X10 3 5.0X10 -1 1.4X10 1 5.8X10 3 1.6X10 5 Pt-195m 1.0X10 1 2.7X10 2 5.0X10 -1 1.4X10 1 6.2X10 3 1.7X10 5 Pt-197 2.0X10 1 5.4X10 2 6.0X10 -1 1.6X10 1 3.2X10 4 8.7X10 5 Pt-197m 1.0X10 1 2.7X10 2 6.0X10 -1 1.6X10 1 3.7X10 5 1.0X10 7 Pu-236 Plutonium (94) 3.0X10 1 8.1X10 2 3.0X10 -3 8.1X10 -2 2.0X10 1 5.3X10 2 Pu-237 2.0X10 1 5.4X10 2 2.0X10 1 5.4X10 2 4.5X10 2 1.2X10 4 Pu-238 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 6.3X10 -1 1.7X10 1 Pu-239 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 2.3X10 -3 6.2X10 -2 Pu-240 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 8.4X10 -3 2.3X10 -1 Pu-241 (a) 4.0X10 1 1.1X10 3 6.0X10 -2 1.6 3.8 1.0X10 2 Pu-242 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 1.5X10 -4 3.9X10 -3 Pu-244 (a) 4.0X10 -1 1.1X10 1 1.0X10 -3 2.7X10 -2 6.7X10 -7 1.8X10 -5 Ra-223 (a) Radium (88) 4.0X10 -1 1.1X10 1 7.0X10 -3 1.9X10 -1 1.9X10 3 5.1X10 4 Ra-224 (a) 4.0X10 -1 1.1X10 1 2.0X10 -2 5.4X10 -1 5.9X10 3 1.6X10 5 Ra-225 (a) 2.0X10 -1 5.4 4.0X10 -3 1.1X10 -1 1.5X10 3 3.9X10 4 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 1.6X10 1 2.0X10 -2 5.4X10 -1 1.0X10 1 2.7X10 2 Rb-81 Rubidium (37) 2.0 5.4X10 1 8.0X10 -1 2.2X10 1 3.1X10 5 8.4X10 6 Rb-83 (a) 2.0 5.4X10 1 2.0 5.4X10 1 6.8X10 2 1.8X10 4 Rb-84 1.0 2.7X10 1 1.0 2.7X10 1 1.8X10 3 4.7X10 4 Rb-86 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 3.0X10 3 8.1X10 4 Rb-87 Unlimited Unlimited Unlimited Unlimited 3.2X10 -9 8.6X10 -8 Rb (nat) Unlimited Unlimited Unlimited Unlimited 6.7X10 6 1.8X10 8 Re-184 Rhenium (75) 1.0 2.7X10 1 1.0 2.7X10 1 6.9X10 2 1.9X10 4 Re-184m 3.0 8.1X10 1 1.0 2.7X10 1 1.6X10 2 4.3X10 3 Re-186 2.0 5.4X10 1 6.0X10 -1 1.6X10 1 6.9X10 3 1.9X10 5 Re-187 Unlimited Unlimited Unlimited Unlimited 1.4X10 -9 3.8X10 -8 Re-188 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 3.6X10 4 9.8X10 5 Re-189 (a) 3.0 8.1X10 1 6.0X10 -1 1.6X10 1 2.5X10 4 6.8X10 5 Re (nat) Unlimited Unlimited Unlimited Unlimited 0.0 2.4X10 -8 Rh-99 Rhodium (45) 2.0 5.4X10 1 2.0 5.4X10 1 3.0X10 3 8.2X10 4 Rh-101 4.0 1.1X10 2 3.0 8.1X10 1 4.1X10 1 1.1X10 3 Rh-102 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 4.5X10 1 1.2X10 3 Rh-102m 2.0 5.4X10 1 2.0 5.4X10 1 2.3X10 2 6.2X10 3 Rh-103m 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 1.2X10 6 3.3X10 7 Rh-105 1.0X10 1 2.7X10 2 8.0X10 -1 2.2X10 1 3.1X10 4 8.4X10 5 Rn-222 (a) Radon (86) 3.0X10 -1 8.1 4.0X10 -3 1.1X10 -1 5.7X10 3 1.5X10 5 Ru-97 Ruthenium (44) 5.0 1.4X10 2 5.0 1.4X10 2 1.7X10 4 4.6X10 5 Ru-103 (a) 2.0 5.4X10 1 2.0 5.4X10 1 1.2X10 3 3.2X10 4 Ru-105 1.0 2.7X10 1 6.0X10 -1 1.6X10 1 2.5X10 5 6.7X10 6 Ru-106 (a) 2.0X10 -1 5.4 2.0X10 -1 5.4 1.2X10 2 3.3X10 3 S-35 Sulphur (16) 4.0X10 1 1.1X10 3 3.0 8.1X10 1 1.6X10 3 4.3X10 4 Sb-122 Antimony (51) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 1.5X10 4 4.0X10 5 Sb-124 6.0X10 -1 1.6X10 1 6.0X10 -1 1.6X10 1 6.5X10 2 1.7X10 4 Sb-125 2.0 5.4X10 1 1.0 2.7X10 1 3.9X10 1 1.0X10 3 Sb-126 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 3.1X10 3 8.4X10 4 Sc-44 Scandium (21) 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 6.7X10 5 1.8X10 7 Sc-46 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 1.3X10 3 3.4X10 4 Sc-47 1.0X10 1 2.7X10 2 7.0X10 -1 1.9X10 1 3.1X10 4 8.3X10 5 Sc-48 3.0X10 -1 8.1 3.0X10 -1 8.1 5.5X10 4 1.5X10 6 Se-75 Selenium (34) 3.0 8.1X10 1 3.0 8.1X10 1 5.4X10 2 1.5X10 4 Se-79 4.0X10 1 1.1X10 3 2.0 5.4X10 1 2.6X10 -3 7.0X10 -2 Si-31 Silicon (14) 6.0X10 -1 1.6X10 1 6.0X10 -1 1.6X10 1 1.4X10 6 3.9X10 7 Si-32 4.0X10 1 1.1X10 3 5.0X10 -1 1.4X10 1 3.9 1.1X10 2 Sm-145 Samarium (62) 1.0X10 1 2.7X10 2 1.0X10 1 2.7X10 2 9.8X10 1 2.6X10 3 Sm-147 Unlimited Unlimited Unlimited Unlimited 8.5X10 -10 2.3X10 -8 Sm-151 4.0X10 1 1.1X10 3 1.0X10 1 2.7X10 2 9.7X10 -1 2.6X10 1 Sm-153 9.0 2.4X10 2 6.0X10 -1 1.6X10 1 1.6X10 4 4.4X10 5 Sn-113 (a) Tin (50) 4.0 1.1X10 2 2.0 5.4X10 1 3.7X10 2 1.0X10 4 Sn-117m 7.0 1.9X10 2 4.0X10 -1 1.1X10 1 3.0X10 3 8.2X10 4 Sn-119m 4.0X10 1 1.1X10 3 3.0X10 1 8.1X10 2 1.4X10 2 3.7X10 3 Sn-121m (a) 4.0X10 1 1.1X10 3 9.0X10 -1 2.4X10 1 2.0 5.4X10 1 Sn-123 8.0X10 -1 2.2X10 1 6.0X10 -1 1.6X10 1 3.0X10 2 8.2X10 3 Sn-125 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 4.0X10 3 1.1X10 5 Sn-126 (a) 6.0X10 -1 1.6X10 1 4.0X10 -1 1.1X10 1 1.0X10 -3 2.8X10 -2 Sr-82 (a) Strontium (38) 2.0X10 -1 5.4 2.0X10 -1 5.4 2.3X10 3 6.2X10 4 Sr-85 2.0 5.4X10 1 2.0 5.4X10 1 8.8X10 2 2.4X10 4 Sr-85m 5.0 1.4X10 2 5.0 1.4X10 2 1.2X10 6 3.3X10 7 Sr-87m 3.0 8.1X10 1 3.0 8.1X10 1 4.8X10 5 1.3X10 7 Sr-89 6.0X10 -1 1.6X10 1 6.0X10 -1 1.6X10 1 1.1X10 3 2.9X10 4 Sr-90 (a) 3.0X10 -1 8.1 3.0X10 -1 8.1 5.1 1.4X10 2 Sr-91 (a) 3.0X10 -1 8.1 3.0X10 -1 8.1 1.3X10 5 3.6X10 6 Sr-92 (a) 1.0 2.7X10 1 3.0X10 -1 8.1 4.7X10 5 1.3X10 7 T(H-3) Tritium (1) 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 3.6X10 2 9.7X10 3 Ta-178 (long-lived) Tantalum (73) 1.0 2.7X10 1 8.0X10 -1 2.2X10 1 4.2X10 6 1.1X10 8 Ta-179 3.0X10 1 8.1X10 2 3.0X10 1 8.1X10 2 4.1X10 1 1.1X10 3 Ta-182 9.0X10 -1 2.4X10 1 5.0X10 -1 1.4X10 1 2.3X10 2 6.2X10 3 Tb-157 Terbium (65) 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 5.6X10 -1 1.5X10 1 Tb-158 1.0 2.7X10 1 1.0 2.7X10 1 5.6X10 -1 1.5X10 1 Tb-160 1.0 2.7X10 1 6.0X10 -1 1.6X10 1 4.2X10 2 1.1X10 4 Tc-95m (a) Technetium (43) 2.0 5.4X10 1 2.0 5.4X10 1 8.3X10 2 2.2X10 4 Tc-96 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 1.2X10 4 3.2X10 5 Tc-96m (a) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 1.4X10 6 3.8X10 7 Tc-97 Unlimited Unlimited Unlimited Unlimited 5.2X10 -5 1.4X10 -3 Tc-97m 4.0X10 1 1.1X10 3 1.0 2.7X10 1 5.6X10 2 1.5X10 4 Tc-98 8.0X10 -1 2.2X10 1 7.0X10 -1 1.9X10 1 3.2X10 -5 8.7X10 -4 Tc-99 4.0X10 1 1.1X10 3 9.0X10 -1 2.4X10 1 6.3X10 -4 1.7X10 -2 Tc-99m 1.0X10 1 2.7X10 2 4.0 1.1X10 2 1.9X10 5 5.3X10 6 Te-121 Tellurium (52) 2.0 5.4X10 1 2.0 5.4X10 1 2.4X10 3 6.4X10 4 Te-121m 5.0 1.4X10 2 3.0 8.1X10 1 2.6X10 2 7.0X10 3 Te-123m 8.0 2.2X10 2 1.0 2.7X10 1 3.3X10 2 8.9X10 3 Te-125m 2.0X10 1 5.4X10 2 9.0X10 -1 2.4X10 1 6.7X10 2 1.8X10 4 Te-127 2.0X10 1 5.4X10 2 7.0X10 -1 1.9X10 1 9.8X10 4 2.6X10 6 Te-127m (a) 2.0X10 1 5.4X10 2 5.0X10 -1 1.4X10 1 3.5X10 2 9.4X10 3 Te-129 7.0X10 -1 1.9X10 1 6.0X10 -1 1.6X10 1 7.7X10 5 2.1X10 7 Te-129m (a) 8.0X10 -1 2.2X10 1 4.0X10 -1 1.1X10 1 1.1X10 3 3.0X10 4 Te-131m (a) 7.0X10 -1 1.9X10 1 5.0X10 -1 1.4X10 1 3.0X10 4 8.0X10 5 Te-132 (a) 5.0X10 -1 1.4X10 1 4.0X10 -1 1.1X10 1 1.1X10 4 3.0X10 5 Th-227 Thorium (90) 1.0X10 1 2.7X10 2 5.0X10 -3 1.4X10 -1 1.1X10 3 3.1X10 4 Th-228 (a) 5.0X10 -1 1.4X10 1 1.0X10 -3 2.7X10 -2 3.0X10 1 8.2X10 2 Th-229 5.0 1.4X10 2 5.0X10 -4 1.4X10 -2 7.9X10 -3 2.1X10 -1 Th-230 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 7.6X10 -4 2.1X10 -2 Th-231 4.0X10 1 1.1X10 3 2.0X10 -2 5.4X10 -1 2.0X10 4 5.3X10 5 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 8.6X10 2 2.3X10 4 Th(nat) Unlimited Unlimited Unlimited Unlimited 8.1X10 -9 2.2X10 -7 Ti-44 (a) Titanium (22) 5.0X10 -1 1.4X10 1 4.0X10 -1 1.1X10 1 6.4 1.7X10 2 Tl-200 Thallium (81) 9.0X10 -1 2.4X10 1 9.0X10 -1 2.4X10 1 2.2X10 4 6.0X10 5 Tl-201 1.0X10 1 2.7X10 2 4.0 1.1X10 2 7.9X10 3 2.1X10 5 Tl-202 2.0 5.4X10 1 2.0 5.4X10 1 2.0X10 3 5.3X10 4 Tl-204 1.0X10 1 2.7X10 2 7.0X10 -1 1.9X10 1 1.7X10 1 4.6X10 2 Tm-167 Thulium (69) 7.0 1.9X10 2 8.0X10 -1 2.2X10 1 3.1X10 3 8.5X10 4 Tm-170 3.0 8.1X10 1 6.0X10 -1 1.6X10 1 2.2X10 2 6.0X10 3 Tm-171 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 U-230 (fast lung absorption) (a)(d) Uranium (92) 4.0X10 1 1.1X10 3 1.0X10 -1 2.7 1.0X10 3 2.7X10 4 U-230 (medium lung absorption) (a)(e) 4.0X10 1 1.1X10 3 4.0X10 -3 1.1X10 -1 1.0X10 3 2.7X10 4 U-230 (slow lung absorption) (a)(f) 3.0X10 1 8.1X10 2 3.0X10 -3 8.1X10 -2 1.0X10 3 2.7X10 4 U-232 (fast lung absorption) (d) 4.0X10 1 1.1X10 3 1.0X10 -2 2.7X10 -1 8.3X10 -1 2.2X10 1 U-232 (medium lung absorption) (e) 4.0X10 1 1.1X10 3 7.0X10 -3 1.9X10 -1 8.3X10 -1 2.2X10 1 U-232 (slow lung absorption) (f) 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 8.3X10 -1 2.2X10 1 U-233 (fast lung absorption) (d) 4.0X10 1 1.1X10 3 9.0X10 -2 2.4 3.6X10 -4 9.7X10 -3 U-233 (medium lung absorption) (e) 4.0X10 1 1.1X10 3 2.0X10 -2 5.4X10 -1 3.6X10 -4 9.7X10 -3 U-233 (slow lung absorption) (f) 4.0X10 1 1.1X10 3 6.0X10 -3 1.6X10 -1 3.6X10 -4 9.7X10 -3 U-234 (fast lung absorption) (d) 4.0X10 1 1.1X10 3 9.0X10 -2 2.4 2.3X10 -4 6.2X10 -3 U-234 (medium lung absorption) (e) 4.0X10 1 1.1X10 3 2.0X10 -2 5.4X10 -1 2.3X10 -4 6.2X10 -3 U-234 (slow lung absorption) (f) 4.0X10 1 1.1X10 3 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) 4.0X10 1 1.1X10 3 2.0X10 -2 5.4X10 -1 2.4X10 -6 6.5X10 -5 U-236 (slow lung absorption) (f) 4.0X10 1 1.1X10 3 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 1.1X10 1 4.0X10 -1 1.1X10 1 6.3X10 3 1.7X10 5 V-49 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 3.0X10 2 8.1X10 3 W-178 (a) Tungsten (74) 9.0 2.4X10 2 5.0 1.4X10 2 1.3X10 3 3.4X10 4 W-181 3.0X10 1 8.1X10 2 3.0X10 1 8.1X10 2 2.2X10 2 6.0X10 3 W-185 4.0X10 1 1.1X10 3 8.0X10 -1 2.2X10 1 3.5X10 2 9.4X10 3 W-187 2.0 5.4X10 1 6.0X10 -1 1.6X10 1 2.6X10 4 7.0X10 5 W-188 (a) 4.0X10 -1 1.1X10 1 3.0X10 -1 8.1 3.7X10 2 1.0X10 4 Xe-122 (a) Xenon (54) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 4.8X10 4 1.3X10 6 Xe-123 2.0 5.4X10 1 7.0X10 -1 1.9X10 1 4.4X10 5 1.2X10 7 Xe-127 4.0 1.1X10 2 2.0 5.4X10 1 1.0X10 3 2.8X10 4 Xe-131m 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 3.1X10 3 8.4X10 4 Xe-133 2.0X10 1 5.4X10 2 1.0X10 1 2.7X10 2 6.9X10 3 1.9X10 5 Xe-135 3.0 8.1X10 1 2.0 5.4X10 1 9.5X10 4 2.6X10 6 Y-87 (a) Yttrium (39) 1.0 2.7X10 1 1.0 2.7X10 1 1.7X10 4 4.5X10 5 Y-88 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 5.2X10 2 1.4X10 4 Y-90 3.0X10 -1 8.1 3.0X10 -1 8.1 2.0X10 4 5.4X10 5 Y-91 6.0X10 -1 1.6X10 1 6.0X10 -1 1.6X10 1 9.1X10 2 2.5X10 4 Y-91m 2.0 5.4X10 1 2.0 5.4X10 1 1.5X10 6 4.2X10 7 Y-92 2.0X10 -1 5.4 2.0X10 -1 5.4 3.6X10 5 9.6X10 6 Y-93 3.0X10 -1 8.1 3.0X10 -1 8.1 1.2X10 5 3.3X10 6 Yb-169 Ytterbium (70) 4.0 1.1X10 2 1.0 2.7X10 1 8.9X10 2 2.4X10 4 Yb-175 3.0X10 1 8.1X10 2 9.0X10 -1 2.4X10 1 6.6X10 3 1.8X10 5 Zn-65 Zinc (30) 2.0 5.4X10 1 2.0 5.4X10 1 3.0X10 2 8.2X10 3 Zn-69 3.0 8.1X10 1 6.0X10 -1 1.6X10 1 1.8X10 6 4.9X10 7 Zn-69m (a) 3.0 8.1X10 1 6.0X10 -1 1.6X10 1 1.2X10 5 3.3X10 6 Zr-88 Zirconium (40) 3.0 8.1X10 1 3.0 8.1X10 1 6.6X10 2 1.8X10 4 Zr-93 Unlimited Unlimited Unlimited Unlimited 9.3X10 -5 2.5X10 -3 Zr-95 (a) 2.0 5.4X10 1 8.0X10 -1 2.2X10 1 7.9X10 2 2.1X10 4 Zr-97 (a) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 7.1X10 4 1.9X10 6 Symbol of radionuclide Element and atomic number A1 (TBq) A1 (Ci) b A2 (TBq) A2 (Ci) b Specific activity (TBq/g) (Ci/g) Ac-225 (a) Actinium (89) 8.0X10 -1 2.2X10 1 6.0X10 -3 1.6X10 -1 2.1X10 3 5.8X10 4 Ac-227 (a) 9.0X10 -1 2.4X10 1 9.0X10 -5 2.4X10 -3 2.7 7.2X10 1 Ac-228 6.0X10 -1 1.6X10 1 5.0X10 -1 1.4X10 1 8.4X10 4 2.2X10 6 Ag-105 Silver (47) 2.0 5.4X10 1 2.0 5.4X10 1 1.1X10 3 3.0X10 4 Ag-108m (a) 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 9.7X10 -1 2.6X10 1 Ag-110m (a) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 1.8X10 2 4.7X10 3 Ag-111 2.0 5.4X10 1 6.0X10 -1 1.6X10 1 5.8X10 3 1.6X10 5 Al-26 Aluminum (13) 1.0X10 -1 2.7 1.0X10 -1 2.7 7.0X10 -4 1.9X10 -2 Am-241 Americium (95) 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 1.3X10 -1 3.4 Am-242m (a) 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 3.6X10 -1 1.0X10 1 Am-243 (a) 5.0 1.4X10 2 1.0X10 -3 2.7X10 -2 7.4X10 -3 2.0X10 -1 Ar-37 Argon (18) 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 3.7X10 3 9.9X10 4 Ar-39 4.0X10 1 1.1X10 3 2.0X10 1 5.4X10 2 1.3 3.4X10 1 Ar-41 3.0X10 -1 8.1 3.0X10 -1 8.1 1.5X10 6 4.2X10 7 As-72 Arsenic (33) 3.0X10 -1 8.1 3.0X10 -1 8.1 6.2X10 4 1.7X10 6 As-73 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 8.2X10 2 2.2X10 4 As-74 1.0 2.7X10 1 9.0X10 -1 2.4X10 1 3.7X10 3 9.9X10 4 As-76 3.0X10 -1 8.1 3.0X10 -1 8.1 5.8X10 4 1.6X10 6 As-77 2.0X10 1 5.4X10 2 7.0X10 -1 1.9X10 1 3.9X10 4 1.0X10 6 At-211 (a) Astatine (85) 2.0X10 1 5.4X10 2 5.0X10 -1 1.4X10 1 7.6X10 4 2.1X10 6 Au-193 Gold (79) 7.0 1.9X10 2 2.0 5.4X10 1 3.4X10 4 9.2X10 5 Au-194 1.0 2.7X10 1 1.0 2.7X10 1 1.5X10 4 4.1X10 5 Au-195 1.0X10 1 2.7X10 2 6.0 1.6X10 2 1.4X10 2 3.7X10 3 Au-198 1.0 2.7X10 1 6.0X10 -1 1.6X10 1 9.0X10 3 2.4X10 5 Au-199 1.0X10 1 2.7X10 2 6.0X10 -1 1.6X10 1 7.7X10 3 2.1X10 5 Ba-131 (a) Barium (56) 2.0 5.4X10 1 2.0 5.4X10 1 3.1X10 3 8.4X10 4 Ba-133 3.0 8.1X10 1 3.0 8.1X10 1 9.4 2.6X10 2 Ba-133m 2.0X10 1 5.4X10 2 6.0X10 -1 1.6X10 1 2.2X10 4 6.1X10 5 Ba-140 (a) 5.0X10 -1 1.4X10 1 3.0X10 -1 8.1 2.7X10 3 7.3X10 4 Be-7 Beryllium (4) 2.0X10 1 5.4X10 2 2.0X10 1 5.4X10 2 1.3X10 4 3.5X10 5 Be-10 4.0X10 1 1.1X10 3 6.0X10 -1 1.6X10 1 8.3X10 -4 2.2X10 -2 Bi-205 Bismuth (83) 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 1.5X10 3 4.2X10 4 Bi-206 3.0X10 -1 8.1 3.0X10 -1 8.1 3.8X10 3 1.0X10 5 Bi-207 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 1.9 5.2X10 1 Bi-210 1.0 2.7X10 1 6.0X10 -1 1.6X10 1 4.6X10 3 1.2X10 5 Bi-210m (a) 6.0X10 -1 1.6X10 1 2.0X10 -2 5.4X10 -1 2.1X10 -5 5.7X10 -4 Bi-212 (a) 7.0X10 -1 1.9X10 1 6.0X10 -1 1.6X10 1 5.4X10 5 1.5X10 7 Bk-247 Berkelium (97) 8.0 2.2X10 2 8.0X10 -4 2.2X10 -2 3.8X10 -2 1.0 Bk-249 (a) 4.0X10 1 1.1X10 3 3.0X10 -1 8.1 6.1X10 1 1.6X10 3 Br-76 Bromine (35) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 9.4X10 4 2.5X10 6 Br-77 3.0 8.1X10 1 3.0 8.1X10 1 2.6X10 4 7.1X10 5 Br-82 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 4.0X10 4 1.1X10 6 C-11 Carbon (6) 1.0 2.7X10 1 6.0X10 -1 1.6X10 1 3.1X10 7 8.4X10 8 C-14 4.0X10 1 1.1X10 3 3.0 8.1X10 1 1.6X10 -1 4.5 Ca-41 Calcium (20) Unlimited Unlimited Unlimited Unlimited 3.1X10 -3 8.5X10 -2 Ca-45 4.0X10 1 1.1X10 3 1.0 2.7X10 1 6.6X10 2 1.8X10 4 Ca-47 (a) 3.0 8.1X10 1 3.0X10 -1 8.1 2.3X10 4 6.1X10 5 Cd-109 Cadmium (48) 3.0X10 1 8.1X10 2 2.0 5.4X10 1 9.6X10 1 2.6X10 3 Cd-113m 4.0X10 1 1.1X10 3 5.0X10 -1 1.4X10 1 8.3 2.2X10 2 Cd-115 (a) 3.0 8.1X10 1 4.0X10 -1 1.1X10 1 1.9X10 4 5.1X10 5 Cd-115m 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 9.4X10 2 2.5X10 4 Ce-139 Cerium (58) 7.0 1.9X10 2 2.0 5.4X10 1 2.5X10 2 6.8X10 3 Ce-141 2.0X10 1 5.4X10 2 6.0X10 -1 1.6X10 1 1.1X10 3 2.8X10 4 Ce-143 9.0X10 -1 2.4X10 1 6.0X10 -1 1.6X10 1 2.5X10 4 6.6X10 5 Ce-144 (a) 2.0X10 -1 5.4 2.0X10 -1 5.4 1.2X10 2 3.2X10 3 Cf-248 Californium (98) 4.0X10 1 1.1X10 3 6.0X10 -3 1.6X10 -1 5.8X10 1 1.6X10 3 Cf-249 3.0 8.1X10 1 8.0X10 -4 2.2X10 -2 1.5X10 -1 4.1 Cf-250 2.0X10 1 5.4X10 2 2.0X10 -3 5.4X10 -2 4.0 1.1X10 2 Cf-251 7.0 1.9X10 2 7.0X10 -4 1.9X10 -2 5.9X10 -2 1.6 Cf-252 1.0X10 -1 2.7 3.0X10 -3 8.1X10 -2 2.0X10 1 5.4X10 2 Cf-253 (a) 4.0X10 1 1.1X10 3 4.0X10 -2 1.1 1.1X10 3 2.9X10 4 Cf-254 1.0X10 -3 2.7X10 -2 1.0X10 -3 2.7X10 -2 3.1X10 2 8.5X10 3 Cl-36 Chlorine (17) 1.0X10 1 2.7X10 2 6.0X10 -1 1.6X10 1 1.2X10 -3 3.3X10 -2 Cl-38 2.0X10 -1 5.4 2.0X10 -1 5.4 4.9X10 6 1.3X10 8 Cm-240 Curium (96) 4.0X10 1 1.1X10 3 2.0X10 -2 5.4X10 -1 7.5X10 2 2.0X10 4 Cm-241 2.0 5.4X10 1 1.0 2.7X10 1 6.1X10 2 1.7X10 4 Cm-242 4.0X10 1 1.1X10 3 1.0X10 -2 2.7X10 -1 1.2X10 2 3.3X10 3 Cm-243 9.0 2.4X10 2 1.0X10 -3 2.7X10 -2 1.9X10 -3 5.2X10 1 Cm-244 2.0X10 1 5.4X10 2 2.0X10 -3 5.4X10 -2 3.0 8.1X10 1 Cm-245 9.0 2.4X10 2 9.0X10 -4 2.4X10 -2 6.4X10 -3 1.7X10 -1 Cm-246 9.0 2.4X10 2 9.0X10 -4 2.4X10 -2 1.1X10 -2 3.1X10 -1 Cm-247 (a) 3.0 8.1X10 1 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 1.4X10 1 5.0X10 -1 1.4X10 1 1.1X10 5 3.1X10 6 Co-56 3.0X10 -1 8.1 3.0X10 -1 8.1 1.1X10 3 3.0X10 4 Co-57 1.0X10 1 2.7X10 2 1.0X10 1 2.7X10 2 3.1X10 2 8.4X10 3 Co-58 1.0 2.7X10 1 1.0 2.7X10 1 1.2X10 3 3.2X10 4 Co-58m 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 2.2X10 5 5.9X10 6 Co-60 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 4.2X10 1 1.1X10 3 Cr-51 Chromium (24) 3.0X10 1 8.1X10 2 3.0X10 1 8.1X10 2 3.4X10 3 9.2X10 4 Cs-129 Cesium (55) 4.0 1.1X10 2 4.0 1.1X10 2 2.8X10 4 7.6X10 5 Cs-131 3.0X10 1 8.1X10 2 3.0X10 1 8.1X10 2 3.8X10 3 1.0X10 5 Cs-132 1.0 2.7X10 1 1.0 2.7X10 1 5.7X10 3 1.5X10 5 Cs-134 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 4.8X10 1 1.3X10 3 Cs-134m 4.0X10 1 1.1X10 3 6.0X10 -1 1.6X10 1 3.0X10 5 8.0X10 6 Cs-135 4.0X10 1 1.1X10 3 1.0 2.7X10 1 4.3X10 -5 1.2X10 -3 Cs-136 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 2.7X10 3 7.3X10 4 Cs-137 (a) 2.0 5.4X10 1 6.0X10 -1 1.6X10 1 3.2 8.7X10 1 Cu-64 Copper (29) 6.0 1.6X10 2 1.0 2.7X10 1 1.4X10 5 3.9X10 6 Cu-67 1.0X10 1 2.7X10 2 7.0X10 -1 1.9X10 1 2.8X10 4 7.6X10 5 Dy-159 Dysprosium (66) 2.0X10 1 5.4X10 2 2.0X10 1 5.4X10 2 2.1X10 2 5.7X10 3 Dy-165 9.0X10 -1 2.4X10 1 6.0X10 -1 1.6X10 1 3.0X10 5 8.2X10 6 Dy-166 (a) 9.0X10 -1 2.4X10 1 3.0X10 -1 8.1 8.6X10 3 2.3X10 5 Er-169 Erbium (68) 4.0X10 1 1.1X10 3 1.0 2.7X10 1 3.1X10 3 8.3X10 4 Er-171 8.0X10 -1 2.2X10 1 5.0X10 -1 1.4X10 1 9.0X10 4 2.4X10 6 Eu-147 Europium (63) 2.0 5.4X10 1 2.0 5.4X10 1 1.4X10 3 3.7X10 4 Eu-148 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 6.0X10 2 1.6X10 4 Eu-149 2.0X10 1 5.4X10 2 2.0X10 1 5.4X10 2 3.5X10 2 9.4X10 3 Eu-150 (short lived) 2.0 5.4X10 1 7.0X10 -1 1.9X10 1 6.1X10 4 1.6X10 6 Eu-150 (long lived) 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 6.1X10 4 1.6X10 6 Eu-152 1.0 2.7X10 1 1.0 2.7X10 1 6.5 1.8X10 2 Eu-152m 8.0X10 -1 2.2X10 1 8.0X10 -1 2.2X10 1 8.2X10 4 2.2X10 6 Eu-154 9.0X10 -1 2.4X10 1 6.0X10 -1 1.6X10 1 9.8 2.6X10 2 Eu-155 2.0X10 1 5.4X10 2 3.0 8.1X10 1 1.8X10 1 4.9X10 2 Eu-156 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 2.0X10 3 5.5X10 4 F-18 Fluorine (9) 1.0 2.7X10 1 6.0X10 -1 1.6X10 1 3.5X10 6 9.5X10 7 Fe-52 (a) Iron (26) 3.0X10 -1 8.1 3.0X10 -1 8.1 2.7X10 5 7.3X10 6 Fe-55 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 8.8X10 1 2.4X10 3 Fe-59 9.0X10 -1 2.4X10 1 9.0X10 -1 2.4X10 1 1.8X10 3 5.0X10 4 Fe-60 (a) 4.0X10 1 1.1X10 3 2.0X10 -1 5.4 7.4X10 -4 2.0X10 -2 Ga-67 Gallium (31) 7.0 1.9X10 2 3.0 8.1X10 1 2.2X10 4 6.0X10 5 Ga-68 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 1.5X10 6 4.1X10 7 Ga-72 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 1.1X10 5 3.1X10 6 Gd-146 (a) Gadolinium (64) 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 6.9X10 2 1.9X10 4 Gd-148 2.0X10 1 5.4X10 2 2.0X10 -3 5.4X10 -2 1.2 3.2X10 1 Gd-153 1.0X10 1 2.7X10 2 9.0 2.4X10 2 1.3X10 2 3.5X10 3 Gd-159 3.0 8.1X10 1 6.0X10 -1 1.6X10 1 3.9X10 4 1.1X10 6 Ge-68 (a) Germanium (32) 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 2.6X10 2 7.1X10 3 Ge-71 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 5.8X10 3 1.6X10 5 Ge-77 3.0X10 -1 8.1 3.0X10 -1 8.1 1.3X10 5 3.6X10 6 Hf-172 (a) Hafnium (72) 6.0X10 -1 1.6X10 1 6.0X10 -1 1.6X10 1 4.1X10 1 1.1X10 3 Hf-175 3.0 8.1X10 1 3.0 8.1X10 1 3.9X10 2 1.1X10 4 Hf-181 2.0 5.4X10 1 5.0X10 -1 1.4X10 1 6.3X10 2 1.7X10 4 Hf-182 Unlimited Unlimited Unlimited Unlimited 8.1X10 -6 2.2X10 -4 Hg-194 (a) Mercury (80) 1.0 2.7X10 1 1.0 2.7X10 1 1.3X10 -1 3.5 Hg-195m (a) 3.0 8.1X10 1 7.0X10 -1 1.9X10 1 1.5X10 4 4.0X10 5 Hg-197 2.0X10 1 5.4X10 2 1.0X10 1 2.7X10 2 9.2X10 3 2.5X10 5 Hg-197m 1.0X10 1 2.7X10 2 4.0X10 -1 1.1X10 1 2.5X10 4 6.7X10 5 Hg-203 5.0 1.4X10 2 1.0 2.7X10 1 5.1X10 2 1.4X10 4 Ho-166 Holmium (67) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 2.6X10 4 7.0X10 5 Ho-166m 6.0X10 -1 1.6X10 1 5.0X10 -1 1.4X10 1 6.6X10 -2 1.8 I-123 Iodine (53) 6.0 1.6X10 2 3.0 8.1X10 1 7.1X10 4 1.9X10 6 I-124 1.0 2.7X10 1 1.0 2.7X10 1 9.3X10 3 2.5X10 5 I-125 2.0X10 1 5.4X10 2 3.0 8.1X10 1 6.4X10 2 1.7X10 4 I-126 2.0 5.4X10 1 1.0 2.7X10 1 2.9X10 3 8.0X10 4 I-129 Unlimited Unlimited Unlimited Unlimited 6.5X10 -6 1.8X10 -4 I-131 3.0 8.1X10 1 7.0X10 -1 1.9X10 1 4.6X10 3 1.2X10 5 I-132 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 3.8X10 5 1.0X10 7 I-133 7.0X10 -1 1.9X10 1 6.0X10 -1 1.6X10 1 4.2X10 4 1.1X10 6 I-134 3.0X10 -1 8.1 3.0X10 -1 8.1 9.9X10 5 2.7X10 7 I-135 (a) 6.0X10 -1 1.6X10 1 6.0X10 -1 1.6X10 1 1.3X10 5 3.5X10 6 In-111 Indium (49) 3.0 8.1X10 1 3.0 8.1X10 1 1.5X10 4 4.2X10 5 In-113m 4.0 1.1X10 2 2.0 5.4X10 1 6.2X10 5 1.7X10 7 In-114m (a) 1.0X10 1 2.7X10 2 5.0X10 -1 1.4X10 1 8.6X10 2 2.3X10 4 In-115m 7.0 1.9X10 2 1.0 2.7X10 1 2.2X10 5 6.1X10 6 Ir-189 (a) Iridium (77) 1.0X10 1 2.7X10 2 1.0X10 1 2.7X10 2 1.9X10 3 5.2X10 4 Ir-190 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 2.3X10 3 6.2X10 4 Ir-192 c 1.0 c 2.7X10 1 6.0X10 -1 1.6X10 1 3.4X10 2 9.2X10 3 Ir-194 3.0X10 -1 8.1 3.0X10 -1 8.1 3.1X10 4 8.4X10 5 K-40 Potassium (19) 9.0X10 -1 2.4X10 1 9.0X10 -1 2.4X10 1 2.4X10 -7 6.4X10 -6 K-42 2.0X10 -1 5.4 2.0X10 -1 5.4 2.2X10 5 6.0X10 6 K-43 7.0X10 -1 1.9X10 1 6.0X10 -1 1.6X10 1 1.2X10 5 3.3X10 6 Kr-79 Krypton (36) 4.0 1.1X10 2 2.0 5.4X10 1 4.2X10 4 1.1X10 6 Kr-81 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 7.8X10 -4 2.1X10 -2 Kr-85 1.0X10 1 2.7X10 2 1.0X10 1 2.7X10 2 1.5X10 1 3.9X10 2 Kr-85m 8.0 2.2X10 2 3.0 8.1X10 1 3.0X10 5 8.2X10 6 Kr-87 2.0X10 -1 5.4 2.0X10 -1 5.4 1.0X10 6 2.8X10 7 La-137 Lanthanum (57) 3.0X10 1 8.1X10 2 6.0 1.6X10 2 1.6X10 -3 4.4X10 -2 La-140 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 2.1X10 4 5.6X10 5 Lu-172 Lutetium (71) 6.0X10 -1 1.6X10 1 6.0X10 -1 1.6X10 1 4.2X10 3 1.1X10 5 Lu-173 8.0 2.2X10 2 8.0 2.2X10 2 5.6X10 1 1.5X10 3 Lu-174 9.0 2.4X10 2 9.0 2.4X10 2 2.3X10 1 6.2X10 2 Lu-174m 2.0X10 1 5.4X10 2 1.0X10 1 2.7X10 2 2.0X10 2 5.3X10 3 Lu-177 3.0X10 1 8.1X10 2 7.0X10 -1 1.9X10 1 4.1X10 3 1.1X10 5 Mg-28 (a) Magnesium (12) 3.0X10 -1 8.1 3.0X10 -1 8.1 2.0X10 5 5.4X10 6 Mn-52 Manganese (25) 3.0X10 -1 8.1 3.0X10 -1 8.1 1.6X10 4 4.4X10 5 Mn-53 Unlimited Unlimited Unlimited Unlimited 6.8X10 -5 1.8X10 -3 Mn-54 1.0 2.7X10 1 1.0 2.7X10 1 2.9X10 2 7.7X10 3 Mn-56 3.0X10 -1 8.1 3.0X10 -1 8.1 8.0X10 5 2.2X10 7 Mo-93 Molybdenum (42) 4.0X10 1 1.1X10 3 2.0X10 1 5.4X10 2 4.1X10 -2 1.1 Mo-99 (a) (h) 1.0 2.7X10 1 6.0X10 -1 1.6X10 1 1.8X10 4 4.8X10 5 N-13 Nitrogen (7) 9.0X10 -1 2.4X10 1 6.0X10 -1 1.6X10 1 5.4X10 7 1.5X10 9 Na-22 Sodium (11) 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 2.3X10 2 6.3X10 3 Na-24 2.0X10 -1 5.4 2.0X10 -1 5.4 3.2X10 5 8.7X10 6 Nb-93m Niobium (41) 4.0X10 1 1.1X10 3 3.0X10 1 8.1X10 2 8.8 2.4X10 2 Nb-94 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 6.9X10 -3 1.9X10 -1 Nb-95 1.0 2.7X10 1 1.0 2.7X10 1 1.5X10 3 3.9X10 4 Nb-97 9.0X10 -1 2.4X10 1 6.0X10 -1 1.6X10 1 9.9X10 5 2.7X10 7 Nd-147 Neodymium (60) 6.0 1.6X10 2 6.0X10 -1 1.6X10 1 3.0X10 3 8.1X10 4 Nd-149 6.0X10 -1 1.6X10 1 5.0X10 -1 1.4X10 1 4.5X10 5 1.2X10 7 Ni-59 Nickel (28) Unlimited Unlimited Unlimited Unlimited 3.0X10 -3 8.0X10 -2 Ni-63 4.0X10 1 1.1X10 3 3.0X10 1 8.1X10 2 2.1 5.7X10 1 Ni-65 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 7.1X10 5 1.9X10 7 Np-235 Neptunium (93) 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 5.2X10 1 1.4X10 3 Np-236 (short-lived) 2.0X10 1 5.4X10 2 2.0 5.4X10 1 4.7X10 -4 1.3X10 -2 Np-236 (long-lived) 9.0 2.4X10 2 2.0X10 -2 5.4X10 -1 4.7X10 -4 1.3X10 -2 Np-237 2.0X10 1 5.4X10 2 2.0X10 -3 5.4X10 -2 2.6X10 -5 7.1X10 -4 Np-239 7.0 1.9X10 2 4.0X10 -1 1.1X10 1 8.6X10 3 2.3X10 5 Os-185 Osmium (76) 1.0 2.7X10 1 1.0 2.7X10 1 2.8X10 2 7.5X10 3 Os-191 1.0X10 1 2.7X10 2 2.0 5.4X10 1 1.6X10 3 4.4X10 4 Os-191m 4.0X10 1 1.1X10 3 3.0X10 1 8.1X10 2 4.6X10 4 1.3X10 6 Os-193 2.0 5.4X10 1 6.0X10 -1 1.6X10 1 b2.0X10 4 5.3X10 5 Os-194 (a) 3.0X10 -1 8.1 3.0X10 -1 8.1 1.1X10 1 3.1X10 2 P-32 Phosphorus (15) 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 1.1X10 4 2.9X10 5 P-33 4.0X10 1 1.1X10 3 1.0 2.7X10 1 5.8X10 3 1.6X10 5 Pa-230 (a) Protactinium (91) 2.0 5.4X10 1 7.0X10 -2 1.9 1.2X10 3 3.3X10 4 Pa-231 4.0 1.1X10 2 4.0X10 -4 1.1X10 -2 1.7X10 -3 4.7X10 -2 Pa-233 5.0 1.4X10 2 7.0X10 -1 1.9X10 1 7.7X10 2 2.1X10 4 Pb-201 Lead (82) 1.0 2.7X10 1 1.0 2.7X10 1 6.2X10 4 1.7X10 6 Pb-202 4.0X10 1 1.1X10 3 2.0X10 1 5.4X10 2 1.2X10 -4 3.4X10 -3 Pb-203 4.0 1.1X10 2 3.0 8.1X10 1 1.1X10 4 3.0X10 5 Pb-205 Unlimited Unlimited Unlimited Unlimited 4.5X10 -6 1.2X10 -4 Pb-210 (a) 1.0 2.7X10 1 5.0X10 -2 1.4 2.8 7.6X10 1 Pb-212 (a) 7.0X10 -1 1.9X10 1 2.0X10 -1 5.4 5.1X10 4 1.4X10 6 Pd-103 (a) Palladium (46) 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 2.8X10 3 7.5X10 4 Pd-107 Unlimited Unlimited Unlimited Unlimited 1.9X10 -5 5.1X10 -4 Pd-109 2.0 5.4X10 1 5.0X10 -1 1.4X10 1 7.9X10 4 2.1X10 6 Pm-143 Promethium (61) 3.0 8.1X10 1 3.0 8.1X10 1 1.3X10 2 3.4X10 3 Pm-144 7.0X10 -1 1.9X10 1 7.0X10 -1 1.9X10 1 9.2X10 1 2.5X10 3 Pm-145 3.0X10 1 8.1X10 2 1.0X10 1 2.7X10 2 5.2 1.4X10 2 Pm-147 4.0X10 1 1.1X10 3 2.0 5.4X10 1 3.4X10 1 9.3X10 2 Pm-148m (a) 8.0X10 -1 2.2X10 1 7.0X10 -1 1.9X10 1 7.9X10 2 2.1X10 4 Pm-149 2.0 5.4X10 1 6.0X10 -1 1.6X10 1 1.5X10 4 4.0X10 5 Pm-151 2.0 5.4X10 1 6.0X10 -1 1.6X10 1 2.7X10 4 7.3X10 5 Po-210 Polonium (84) 4.0X10 1 1.1X10 3 2.0X10 -2 5.4X10 -1 1.7X10 2 4.5X10 3 Pr-142 Praseodymium (59) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 4.3X10 4 1.2X10 6 Pr-143 3.0 8.1X10 1 6.0X10 -1 1.6X10 1 2.5X10 3 6.7X10 4 Pt-188 (a) Platinum (78) 1.0 2.7X10 1 8.0X10 -1 2.2X10 1 2.5X10 3 6.8X10 4 Pt-191 4.0 1.1X10 2 3.0 8.1X10 1 8.7X10 3 2.4X10 5 Pt-193 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 1.4 3.7X10 1 Pt-193m 4.0X10 1 1.1X10 3 5.0X10 -1 1.4X10 1 5.8X10 3 1.6X10 5 Pt-195m 1.0X10 1 2.7X10 2 5.0X10 -1 1.4X10 1 6.2X10 3 1.7X10 5 Pt-197 2.0X10 1 5.4X10 2 6.0X10 -1 1.6X10 1 3.2X10 4 8.7X10 5 Pt-197m 1.0X10 1 2.7X10 2 6.0X10 -1 1.6X10 1 3.7X10 5 1.0X10 7 Pu-236 Plutonium (94) 3.0X10 1 8.1X10 2 3.0X10 -3 8.1X10 -2 2.0X10 1 5.3X10 2 Pu-237 2.0X10 1 5.4X10 2 2.0X10 1 5.4X10 2 4.5X10 2 1.2X10 4 Pu-238 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 6.3X10 -1 1.7X10 1 Pu-239 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 2.3X10 -3 6.2X10 -2 Pu-240 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 8.4X10 -3 2.3X10 -1 Pu-241 (a) 4.0X10 1 1.1X10 3 6.0X10 -2 1.6 3.8 1.0X10 2 Pu-242 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 1.5X10 -4 3.9X10 -3 Pu-244 (a) 4.0X10 -1 1.1X10 1 1.0X10 -3 2.7X10 -2 6.7X10 -7 1.8X10 -5 Ra-223 (a) Radium (88) 4.0X10 -1 1.1X10 1 7.0X10 -3 1.9X10 -1 1.9X10 3 5.1X10 4 Ra-224 (a) 4.0X10 -1 1.1X10 1 2.0X10 -2 5.4X10 -1 5.9X10 3 1.6X10 5 Ra-225 (a) 2.0X10 -1 5.4 4.0X10 -3 1.1X10 -1 1.5X10 3 3.9X10 4 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 1.6X10 1 2.0X10 -2 5.4X10 -1 1.0X10 1 2.7X10 2 Rb-81 Rubidium (37) 2.0 5.4X10 1 8.0X10 -1 2.2X10 1 3.1X10 5 8.4X10 6 Rb-83 (a) 2.0 5.4X10 1 2.0 5.4X10 1 6.8X10 2 1.8X10 4 Rb-84 1.0 2.7X10 1 1.0 2.7X10 1 1.8X10 3 4.7X10 4 Rb-86 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 3.0X10 3 8.1X10 4 Rb-87 Unlimited Unlimited Unlimited Unlimited 3.2X10 -9 8.6X10 -8 Rb (nat) Unlimited Unlimited Unlimited Unlimited 6.7X10 6 1.8X10 8 Re-184 Rhenium (75) 1.0 2.7X10 1 1.0 2.7X10 1 6.9X10 2 1.9X10 4 Re-184m 3.0 8.1X10 1 1.0 2.7X10 1 1.6X10 2 4.3X10 3 Re-186 2.0 5.4X10 1 6.0X10 -1 1.6X10 1 6.9X10 3 1.9X10 5 Re-187 Unlimited Unlimited Unlimited Unlimited 1.4X10 -9 3.8X10 -8 Re-188 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 3.6X10 4 9.8X10 5 Re-189 (a) 3.0 8.1X10 1 6.0X10 -1 1.6X10 1 2.5X10 4 6.8X10 5 Re (nat) Unlimited Unlimited Unlimited Unlimited 0.0 2.4X10 -8 Rh-99 Rhodium (45) 2.0 5.4X10 1 2.0 5.4X10 1 3.0X10 3 8.2X10 4 Rh-101 4.0 1.1X10 2 3.0 8.1X10 1 4.1X10 1 1.1X10 3 Rh-102 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 4.5X10 1 1.2X10 3 Rh-102m 2.0 5.4X10 1 2.0 5.4X10 1 2.3X10 2 6.2X10 3 Rh-103m 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 1.2X10 6 3.3X10 7 Rh-105 1.0X10 1 2.7X10 2 8.0X10 -1 2.2X10 1 3.1X10 4 8.4X10 5 Rn-222 (a) Radon (86) 3.0X10 -1 8.1 4.0X10 -3 1.1X10 -1 5.7X10 3 1.5X10 5 Ru-97 Ruthenium (44) 5.0 1.4X10 2 5.0 1.4X10 2 1.7X10 4 4.6X10 5 Ru-103 (a) 2.0 5.4X10 1 2.0 5.4X10 1 1.2X10 3 3.2X10 4 Ru-105 1.0 2.7X10 1 6.0X10 -1 1.6X10 1 2.5X10 5 6.7X10 6 Ru-106 (a) 2.0X10 -1 5.4 2.0X10 -1 5.4 1.2X10 2 3.3X10 3 S-35 Sulphur (16) 4.0X10 1 1.1X10 3 3.0 8.1X10 1 1.6X10 3 4.3X10 4 Sb-122 Antimony (51) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 1.5X10 4 4.0X10 5 Sb-124 6.0X10 -1 1.6X10 1 6.0X10 -1 1.6X10 1 6.5X10 2 1.7X10 4 Sb-125 2.0 5.4X10 1 1.0 2.7X10 1 3.9X10 1 1.0X10 3 Sb-126 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 3.1X10 3 8.4X10 4 Sc-44 Scandium (21) 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 6.7X10 5 1.8X10 7 Sc-46 5.0X10 -1 1.4X10 1 5.0X10 -1 1.4X10 1 1.3X10 3 3.4X10 4 Sc-47 1.0X10 1 2.7X10 2 7.0X10 -1 1.9X10 1 3.1X10 4 8.3X10 5 Sc-48 3.0X10 -1 8.1 3.0X10 -1 8.1 5.5X10 4 1.5X10 6 Se-75 Selenium (34) 3.0 8.1X10 1 3.0 8.1X10 1 5.4X10 2 1.5X10 4 Se-79 4.0X10 1 1.1X10 3 2.0 5.4X10 1 2.6X10 -3 7.0X10 -2 Si-31 Silicon (14) 6.0X10 -1 1.6X10 1 6.0X10 -1 1.6X10 1 1.4X10 6 3.9X10 7 Si-32 4.0X10 1 1.1X10 3 5.0X10 -1 1.4X10 1 3.9 1.1X10 2 Sm-145 Samarium (62) 1.0X10 1 2.7X10 2 1.0X10 1 2.7X10 2 9.8X10 1 2.6X10 3 Sm-147 Unlimited Unlimited Unlimited Unlimited 8.5X10 -10 2.3X10 -8 Sm-151 4.0X10 1 1.1X10 3 1.0X10 1 2.7X10 2 9.7X10 -1 2.6X10 1 Sm-153 9.0 2.4X10 2 6.0X10 -1 1.6X10 1 1.6X10 4 4.4X10 5 Sn-113 (a) Tin (50) 4.0 1.1X10 2 2.0 5.4X10 1 3.7X10 2 1.0X10 4 Sn-117m 7.0 1.9X10 2 4.0X10 -1 1.1X10 1 3.0X10 3 8.2X10 4 Sn-119m 4.0X10 1 1.1X10 3 3.0X10 1 8.1X10 2 1.4X10 2 3.7X10 3 Sn-121m (a) 4.0X10 1 1.1X10 3 9.0X10 -1 2.4X10 1 2.0 5.4X10 1 Sn-123 8.0X10 -1 2.2X10 1 6.0X10 -1 1.6X10 1 3.0X10 2 8.2X10 3 Sn-125 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 4.0X10 3 1.1X10 5 Sn-126 (a) 6.0X10 -1 1.6X10 1 4.0X10 -1 1.1X10 1 1.0X10 -3 2.8X10 -2 Sr-82 (a) Strontium (38) 2.0X10 -1 5.4 2.0X10 -1 5.4 2.3X10 3 6.2X10 4 Sr-85 2.0 5.4X10 1 2.0 5.4X10 1 8.8X10 2 2.4X10 4 Sr-85m 5.0 1.4X10 2 5.0 1.4X10 2 1.2X10 6 3.3X10 7 Sr-87m 3.0 8.1X10 1 3.0 8.1X10 1 4.8X10 5 1.3X10 7 Sr-89 6.0X10 -1 1.6X10 1 6.0X10 -1 1.6X10 1 1.1X10 3 2.9X10 4 Sr-90 (a) 3.0X10 -1 8.1 3.0X10 -1 8.1 5.1 1.4X10 2 Sr-91 (a) 3.0X10 -1 8.1 3.0X10 -1 8.1 1.3X10 5 3.6X10 6 Sr-92 (a) 1.0 2.7X10 1 3.0X10 -1 8.1 4.7X10 5 1.3X10 7 T(H-3) Tritium (1) 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 3.6X10 2 9.7X10 3 Ta-178 (long-lived) Tantalum (73) 1.0 2.7X10 1 8.0X10 -1 2.2X10 1 4.2X10 6 1.1X10 8 Ta-179 3.0X10 1 8.1X10 2 3.0X10 1 8.1X10 2 4.1X10 1 1.1X10 3 Ta-182 9.0X10 -1 2.4X10 1 5.0X10 -1 1.4X10 1 2.3X10 2 6.2X10 3 Tb-157 Terbium (65) 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 5.6X10 -1 1.5X10 1 Tb-158 1.0 2.7X10 1 1.0 2.7X10 1 5.6X10 -1 1.5X10 1 Tb-160 1.0 2.7X10 1 6.0X10 -1 1.6X10 1 4.2X10 2 1.1X10 4 Tc-95m (a) Technetium (43) 2.0 5.4X10 1 2.0 5.4X10 1 8.3X10 2 2.2X10 4 Tc-96 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 1.2X10 4 3.2X10 5 Tc-96m (a) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 1.4X10 6 3.8X10 7 Tc-97 Unlimited Unlimited Unlimited Unlimited 5.2X10 -5 1.4X10 -3 Tc-97m 4.0X10 1 1.1X10 3 1.0 2.7X10 1 5.6X10 2 1.5X10 4 Tc-98 8.0X10 -1 2.2X10 1 7.0X10 -1 1.9X10 1 3.2X10 -5 8.7X10 -4 Tc-99 4.0X10 1 1.1X10 3 9.0X10 -1 2.4X10 1 6.3X10 -4 1.7X10 -2 Tc-99m 1.0X10 1 2.7X10 2 4.0 1.1X10 2 1.9X10 5 5.3X10 6 Te-121 Tellurium (52) 2.0 5.4X10 1 2.0 5.4X10 1 2.4X10 3 6.4X10 4 Te-121m 5.0 1.4X10 2 3.0 8.1X10 1 2.6X10 2 7.0X10 3 Te-123m 8.0 2.2X10 2 1.0 2.7X10 1 3.3X10 2 8.9X10 3 Te-125m 2.0X10 1 5.4X10 2 9.0X10 -1 2.4X10 1 6.7X10 2 1.8X10 4 Te-127 2.0X10 1 5.4X10 2 7.0X10 -1 1.9X10 1 9.8X10 4 2.6X10 6 Te-127m (a) 2.0X10 1 5.4X10 2 5.0X10 -1 1.4X10 1 3.5X10 2 9.4X10 3 Te-129 7.0X10 -1 1.9X10 1 6.0X10 -1 1.6X10 1 7.7X10 5 2.1X10 7 Te-129m (a) 8.0X10 -1 2.2X10 1 4.0X10 -1 1.1X10 1 1.1X10 3 3.0X10 4 Te-131m (a) 7.0X10 -1 1.9X10 1 5.0X10 -1 1.4X10 1 3.0X10 4 8.0X10 5 Te-132 (a) 5.0X10 -1 1.4X10 1 4.0X10 -1 1.1X10 1 1.1X10 4 3.0X10 5 Th-227 Thorium (90) 1.0X10 1 2.7X10 2 5.0X10 -3 1.4X10 -1 1.1X10 3 3.1X10 4 Th-228 (a) 5.0X10 -1 1.4X10 1 1.0X10 -3 2.7X10 -2 3.0X10 1 8.2X10 2 Th-229 5.0 1.4X10 2 5.0X10 -4 1.4X10 -2 7.9X10 -3 2.1X10 -1 Th-230 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 7.6X10 -4 2.1X10 -2 Th-231 4.0X10 1 1.1X10 3 2.0X10 -2 5.4X10 -1 2.0X10 4 5.3X10 5 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 8.6X10 2 2.3X10 4 Th(nat) Unlimited Unlimited Unlimited Unlimited 8.1X10 -9 2.2X10 -7 Ti-44 (a) Titanium (22) 5.0X10 -1 1.4X10 1 4.0X10 -1 1.1X10 1 6.4 1.7X10 2 Tl-200 Thallium (81) 9.0X10 -1 2.4X10 1 9.0X10 -1 2.4X10 1 2.2X10 4 6.0X10 5 Tl-201 1.0X10 1 2.7X10 2 4.0 1.1X10 2 7.9X10 3 2.1X10 5 Tl-202 2.0 5.4X10 1 2.0 5.4X10 1 2.0X10 3 5.3X10 4 Tl-204 1.0X10 1 2.7X10 2 7.0X10 -1 1.9X10 1 1.7X10 1 4.6X10 2 Tm-167 Thulium (69) 7.0 1.9X10 2 8.0X10 -1 2.2X10 1 3.1X10 3 8.5X10 4 Tm-170 3.0 8.1X10 1 6.0X10 -1 1.6X10 1 2.2X10 2 6.0X10 3 Tm-171 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 U-230 (fast lung absorption) (a)(d) Uranium (92) 4.0X10 1 1.1X10 3 1.0X10 -1 2.7 1.0X10 3 2.7X10 4 U-230 (medium lung absorption) (a)(e) 4.0X10 1 1.1X10 3 4.0X10 -3 1.1X10 -1 1.0X10 3 2.7X10 4 U-230 (slow lung absorption) (a)(f) 3.0X10 1 8.1X10 2 3.0X10 -3 8.1X10 -2 1.0X10 3 2.7X10 4 U-232 (fast lung absorption) (d) 4.0X10 1 1.1X10 3 1.0X10 -2 2.7X10 -1 8.3X10 -1 2.2X10 1 U-232 (medium lung absorption) (e) 4.0X10 1 1.1X10 3 7.0X10 -3 1.9X10 -1 8.3X10 -1 2.2X10 1 U-232 (slow lung absorption) (f) 1.0X10 1 2.7X10 2 1.0X10 -3 2.7X10 -2 8.3X10 -1 2.2X10 1 U-233 (fast lung absorption) (d) 4.0X10 1 1.1X10 3 9.0X10 -2 2.4 3.6X10 -4 9.7X10 -3 U-233 (medium lung absorption) (e) 4.0X10 1 1.1X10 3 2.0X10 -2 5.4X10 -1 3.6X10 -4 9.7X10 -3 U-233 (slow lung absorption) (f) 4.0X10 1 1.1X10 3 6.0X10 -3 1.6X10 -1 3.6X10 -4 9.7X10 -3 U-234 (fast lung absorption) (d) 4.0X10 1 1.1X10 3 9.0X10 -2 2.4 2.3X10 -4 6.2X10 -3 U-234 (medium lung absorption) (e) 4.0X10 1 1.1X10 3 2.0X10 -2 5.4X10 -1 2.3X10 -4 6.2X10 -3 U-234 (slow lung absorption) (f) 4.0X10 1 1.1X10 3 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) 4.0X10 1 1.1X10 3 2.0X10 -2 5.4X10 -1 2.4X10 -6 6.5X10 -5 U-236 (slow lung absorption) (f) 4.0X10 1 1.1X10 3 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 1.1X10 1 4.0X10 -1 1.1X10 1 6.3X10 3 1.7X10 5 V-49 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 3.0X10 2 8.1X10 3 W-178 (a) Tungsten (74) 9.0 2.4X10 2 5.0 1.4X10 2 1.3X10 3 3.4X10 4 W-181 3.0X10 1 8.1X10 2 3.0X10 1 8.1X10 2 2.2X10 2 6.0X10 3 W-185 4.0X10 1 1.1X10 3 8.0X10 -1 2.2X10 1 3.5X10 2 9.4X10 3 W-187 2.0 5.4X10 1 6.0X10 -1 1.6X10 1 2.6X10 4 7.0X10 5 W-188 (a) 4.0X10 -1 1.1X10 1 3.0X10 -1 8.1 3.7X10 2 1.0X10 4 Xe-122 (a) Xenon (54) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 4.8X10 4 1.3X10 6 Xe-123 2.0 5.4X10 1 7.0X10 -1 1.9X10 1 4.4X10 5 1.2X10 7 Xe-127 4.0 1.1X10 2 2.0 5.4X10 1 1.0X10 3 2.8X10 4 Xe-131m 4.0X10 1 1.1X10 3 4.0X10 1 1.1X10 3 3.1X10 3 8.4X10 4 Xe-133 2.0X10 1 5.4X10 2 1.0X10 1 2.7X10 2 6.9X10 3 1.9X10 5 Xe-135 3.0 8.1X10 1 2.0 5.4X10 1 9.5X10 4 2.6X10 6 Y-87 (a) Yttrium (39) 1.0 2.7X10 1 1.0 2.7X10 1 1.7X10 4 4.5X10 5 Y-88 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 5.2X10 2 1.4X10 4 Y-90 3.0X10 -1 8.1 3.0X10 -1 8.1 2.0X10 4 5.4X10 5 Y-91 6.0X10 -1 1.6X10 1 6.0X10 -1 1.6X10 1 9.1X10 2 2.5X10 4 Y-91m 2.0 5.4X10 1 2.0 5.4X10 1 1.5X10 6 4.2X10 7 Y-92 2.0X10 -1 5.4 2.0X10 -1 5.4 3.6X10 5 9.6X10 6 Y-93 3.0X10 -1 8.1 3.0X10 -1 8.1 1.2X10 5 3.3X10 6 Yb-169 Ytterbium (70) 4.0 1.1X10 2 1.0 2.7X10 1 8.9X10 2 2.4X10 4 Yb-175 3.0X10 1 8.1X10 2 9.0X10 -1 2.4X10 1 6.6X10 3 1.8X10 5 Zn-65 Zinc (30) 2.0 5.4X10 1 2.0 5.4X10 1 3.0X10 2 8.2X10 3 Zn-69 3.0 8.1X10 1 6.0X10 -1 1.6X10 1 1.8X10 6 4.9X10 7 Zn-69m (a) 3.0 8.1X10 1 6.0X10 -1 1.6X10 1 1.2X10 5 3.3X10 6 Zr-88 Zirconium (40) 3.0 8.1X10 1 3.0 8.1X10 1 6.6X10 2 1.8X10 4 Zr-93 Unlimited Unlimited Unlimited Unlimited 9.3X10 -5 2.5X10 -3 Zr-95 (a) 2.0 5.4X10 1 8.0X10 -1 2.2X10 1 7.9X10 2 2.1X10 4 Zr-97 (a) 4.0X10 -1 1.1X10 1 4.0X10 -1 1.1X10 1 7.1X10 4 1.9X10 6 (a) A 1 or A 2 values include contributions from daughter nuclides with half-lives less than ten days, as listed in the following: Mg-28 Al-28 Ca-47 Sc-47 Ti-44 Sc-44 Fe-52 Mn-52m Fe-60 Co-60m Zn-69m Zn-69 Ge-68 Ga-68 Rb-83 Kr-83m Sr-82 Rb-82 Sr-90 Y-90 Sr-91 Y-91m Sr-92 Y-92 Y-87 Sr-87m Zr-95 Nb-95m Zr-97 Nb-97m, Nb-97 Mo-99 Tc-99m Tc-95m Tc-95 Tc-96m Tc-96 Ru-103 Rh-103m Ru-106 Rh-106 Pd-103 Rh-103m Ag-108m Ag-108 Ag-110m Ag-110 Cd-115 In-115m In-114m In-114 Sn-113 In-113m Sn-121m Sn-121 Sn-126 Sb-126m Te-127m Te-127 Te-129m Te-129 Te-131m Te-131 Te-132 I-132 I-135 Xe-135m Xe-122 I-122 Cs-137 Ba-137m Ba-131 Cs-131 Ba-140 La-140 Ce-144 Pr-144m, Pr-144 Pm-148m Pm-148 Gd-146 Eu-146 Dy-166 Ho-166 Hf-172 Lu-172 W-178 Ta-178 W-188 Re-188 Re-189 Os-189m Os-194 Ir-194 Ir-189 Os-189m Pt-188 Ir-188 Hg-194 Au-194 Hg-195m Hg-195 Pb-210 Bi-210 Pb-212 Bi-212, Tl-208, Po-212 Bi-210m Tl-206 Bi-212 Tl-208, Po-212 At-211 Po-211 Rn-222 Po-218, Pb-214, At-218, Bi-214, Po-214 Ra-223 Rn-219, Po-215, Pb-211, Bi-211, Po-211, Tl-207 Ra-224 Rn-220, Po-216, Pb-212, Bi-212, Tl-208, Po-212 Ra-225 Ac-225, Fr-221, At-217, Bi-213, Tl-209, Po-213, Pb-209 Ra-226 Rn-222, Po-218, Pb-214, At-218, Bi-214, Po-214 Ra-228 Ac-228 Ac-225 Fr-221, At-217, Bi-213, Tl-209, Po-213, Pb-209 Ac-227 Fr-223 Th-228 Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208, Po-212 Th-234 Pa-234m, Pa-234 Pa-230 Ac-226, Th-226, Fr-222, Ra-222, Rn-218, Po-214 U-230 Th-226, Ra-222, Rn-218, Po-214 U-235 Th-231 Pu-241 U-237 Pu-244 U-240, Np-240m Am-242m Am-242, Np-238 Am-243 Np-239 Cm-247 Pu-243 Bk-249 Am-245 Cf-253 Cm-249 Am-243 Np-239 Cm-247 Pu-243 Bk-249 Am-245 Cf-253 Cm-249 (b) The values of A 1 and A 2 in Curies (Ci) are approximate and for information only the regulatory standard units are terabecquerels (TBq). (c) The activity of IR-192 in special form may be determined from a measurement of the rate of decay or a measurement of the radiation level at a prescribed distance from the source. (d) These values apply only to compounds of uranium that take the chemical form of UF 6 , UO 2 F 2 and UO 2 (NO 3 ) 2 in both normal and accident conditions of transport. (e) These values apply only to compounds of uranium that take the chemical form of UO 3 , UF 4 , UCI 4 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) A 2 = 0.74 TBq (20 Ci) for Mo-99 for domestic use. (a) A 1 or A 2 values include contributions from daughter nuclides with half-lives less than ten days, as listed in the following: Mg-28 Al-28 Ca-47 Sc-47 Ti-44 Sc-44 Fe-52 Mn-52m Fe-60 Co-60m Zn-69m Zn-69 Ge-68 Ga-68 Rb-83 Kr-83m Sr-82 Rb-82 Sr-90 Y-90 Sr-91 Y-91m Sr-92 Y-92 Y-87 Sr-87m Zr-95 Nb-95m Zr-97 Nb-97m, Nb-97 Mo-99 Tc-99m Tc-95m Tc-95 Tc-96m Tc-96 Ru-103 Rh-103m Ru-106 Rh-106 Pd-103 Rh-103m Ag-108m Ag-108 Ag-110m Ag-110 Cd-115 In-115m In-114m In-114 Sn-113 In-113m Sn-121m Sn-121 Sn-126 Sb-126m Te-127m Te-127 Te-129m Te-129 Te-131m Te-131 Te-132 I-132 I-135 Xe-135m Xe-122 I-122 Cs-137 Ba-137m Ba-131 Cs-131 Ba-140 La-140 Ce-144 Pr-144m, Pr-144 Pm-148m Pm-148 Gd-146 Eu-146 Dy-166 Ho-166 Hf-172 Lu-172 W-178 Ta-178 W-188 Re-188 Re-189 Os-189m Os-194 Ir-194 Ir-189 Os-189m Pt-188 Ir-188 Hg-194 Au-194 Hg-195m Hg-195 Pb-210 Bi-210 Pb-212 Bi-212, Tl-208, Po-212 Bi-210m Tl-206 Bi-212 Tl-208, Po-212 At-211 Po-211 Rn-222 Po-218, Pb-214, At-218, Bi-214, Po-214 Ra-223 Rn-219, Po-215, Pb-211, Bi-211, Po-211, Tl-207 Ra-224 Rn-220, Po-216, Pb-212, Bi-212, Tl-208, Po-212 Ra-225 Ac-225, Fr-221, At-217, Bi-213, Tl-209, Po-213, Pb-209 Ra-226 Rn-222, Po-218, Pb-214, At-218, Bi-214, Po-214 Ra-228 Ac-228 Ac-225 Fr-221, At-217, Bi-213, Tl-209, Po-213, Pb-209 Ac-227 Fr-223 Th-228 Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208, Po-212 Th-234 Pa-234m, Pa-234 Pa-230 Ac-226, Th-226, Fr-222, Ra-222, Rn-218, Po-214 U-230 Th-226, Ra-222, Rn-218, Po-214 U-235 Th-231 Pu-241 U-237 Pu-244 U-240, Np-240m Am-242m Am-242, Np-238 Am-243 Np-239 Cm-247 Pu-243 Bk-249 Am-245 Cf-253 Cm-249 Am-243 Np-239 Cm-247 Pu-243 Bk-249 Am-245 Cf-253 Cm-249 (b) The values of A 1 and A 2 in Curies (Ci) are approximate and for information only the regulatory standard units are terabecquerels (TBq). (c) The activity of IR-192 in special form may be determined from a measurement of the rate of decay or a measurement of the radiation level at a prescribed distance from the source. (d) These values apply only to compounds of uranium that take the chemical form of UF 6 , UO 2 F 2 and UO 2 (NO 3 ) 2 in both normal and accident conditions of transport. (e) These values apply only to compounds of uranium that take the chemical form of UO 3 , UF 4 , UCI 4 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) A 2 = 0.74 TBq (20 Ci) for Mo-99 for domestic use. Table A-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) 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Ac-227 - 1.0X10 -1 2.7X10 -12 1.0X10 3 2.7X10 -8 Ac-228 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Ag-105 Silver (47) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ag-108m (b) - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Ag-110m - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Ag-111 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Al-26 Aluminum (13) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Am-241 Americium (95) 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Am-242m (b) - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Am-243 (b) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Ar-37 Argon (18) 1.0X10 6 2.7X10 -5 1.0X10 8 2.7X10 -3 Ar-39 - 1.0X10 7 2.7X10 -4 1.0X10 4 2.7X10 -7 Ar-41 - 1.0X10 2 2.7X10 -9 1.0X10 9 2.7X10 -2 As-72 Arsenic (33) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 As-73 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 As-74 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 As-76 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 As-77 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 At-211 Astatine (85) 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Au-193 Gold (79) 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Au-194 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Au-195 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Au-198 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Au-199 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ba-131 Barium (56) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ba-133 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ba-133m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ba-140 (b) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Be-7 Beryllium (4) 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Be-10 - 1.0X10 4 2.7X10 -7 1.0X10 6 2.7X10 -5 Bi-205 Bismuth (83) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Bi-206 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Bi-207 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Bi-210 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Bi-210m - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Bi-212 (b) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Bk-247 Berkelium (97) 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Bk-249 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Br-76 Bromine (35) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Br-77 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Br-82 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 C-11 Carbon (6) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 C-14 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Ca-41 Calcium (20) 1.0X10 5 2.7X10 -6 1.0X10 7 2.7X10 -4 Ca-45 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Ca-47 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Cd-109 Cadmium (48) 1.0X10 4 2.7X10 -7 1.0X10 6 2.7X10 -5 Cd-113m - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Cd-115 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Cd-115m - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Ce-139 Cerium (58) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ce-141 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Ce-143 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ce-144 (b) - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Cf-248 Californium (98) 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Cf-249 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Cf-250 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Cf-251 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Cf-252 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Cf-253 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Cf-254 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Cl-36 Chlorine (17) 1.0X10 4 2.7X10 -7 1.0X10 6 2.7X10 -5 Cl-38 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Cm-240 Curium (96) 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Cm-241 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Cm-242 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Cm-243 - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Cm-244 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Cm-245 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Cm-246 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Cm-247 - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Cm-248 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Co-55 Cobalt (27) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Co-56 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Co-57 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Co-58 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Co-58m - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Co-60 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Cr-51 Chromium (24) 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Cs-129 Cesium (55) 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Cs-131 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Cs-132 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Cs-134 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Cs-134m - 1.0X10 3 2.7X10 -8 1.0X10 5 2.7X10 -6 Cs-135 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Cs-136 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Cs-137 (b) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Cu-64 Copper (29) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Cu-67 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Dy-159 Dysprosium (66) 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Dy-165 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Dy-166 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Er-169 Erbium (68) 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Er-171 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Eu-147 Europium (63) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Eu-148 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Eu-149 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Eu-150 (short lived) - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Eu-150 (long lived) - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Eu-152 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Eu-152m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Eu-154 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Eu-155 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Eu-156 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 F-18 Fluorine (9) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Fe-52 Iron (26) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Fe-55 - 1.0X10 4 2.7X10 -7 1.0X10 6 2.7X10 -5 Fe-59 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Fe-60 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Ga-67 Gallium (31) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ga-68 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Ga-72 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Gd-146 Gadolinium (64) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Gd-148 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Gd-153 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Gd-159 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Ge-68 Germanium (32) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Ge-71 - 1.0X10 4 2.7X10 -7 1.0X10 8 2.7X10 -3 Ge-77 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Hf-172 Hafnium (72) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Hf-175 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Hf-181 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Hf-182 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Hg-194 Mercury (80) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Hg-195m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Hg-197 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Hg-197m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Hg-203 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Ho-166 Holmium (67) 1.0X10 3 2.7X10 -8 1.0X10 5 2.7X10 -6 Ho-166m - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 I-123 Iodine (53) 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 I-124 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 I-125 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 I-126 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 I-129 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 I-131 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 I-132 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 I-133 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 I-134 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 I-135 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 In-111 Indium (49) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 In-113m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 In-114m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 In-115m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ir-189 Iridium (77) 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Ir-190 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Ir-192 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Ir-194 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 K-40 Potassium (19) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 K-42 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 K-43 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Kr-79 Krypton (36) 1.0X10 3 2.7X10 -8 1.0X10 5 2.7X10 -6 Kr-81 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Kr-85 - 1.0X10 5 2.7X10 -6 1.0X10 4 2.7X10 -7 Kr-85m - 1.0X10 3 2.7X10 -8 1.0X10 10 2.7X10 -1 Kr-87 - 1.0X10 2 2.7X10 -9 1.0X10 9 2.7X10 -2 La-137 Lanthanum (57) 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 La-140 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Lu-172 Lutetium (71) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Lu-173 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Lu-174 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Lu-174m - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Lu-177 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Mg-28 Magnesium (12) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Mn-52 Manganese (25) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Mn-53 - 1.0X10 4 2.7X10 -7 1.0X10 9 2.7X10 -2 Mn-54 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Mn-56 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Mo-93 Molybdenum (42) 1.0X10 3 2.7X10 -8 1.0X10 8 2.7X10 -3 Mo-99 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 N-13 Nitrogen (7) 1.0X10 2 2.7X10 -9 1.0X10 9 2.7X10 -2 Na-22 Sodium (11) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Na-24 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Nb-93m Niobium (41) 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Nb-94 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Nb-95 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Nb-97 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Nd-147 Neodymium (60) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Nd-149 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ni-59 Nickel (28) 1.0X10 4 2.7X10 -7 1.0X10 8 2.7X10 -3 Ni-63 - 1.0X10 5 2.7X10 -6 1.0X10 8 2.7X10 -3 Ni-65 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Np-235 Neptunium (93) 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Np-236 (short-lived) - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Np-236 (long-lived) - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Np-237 (b) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Np-239 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Os-185 Osmium (76) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Os-191 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Os-191m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Os-193 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Os-194 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 P-32 Phosphorus (15) 1.0X10 3 2.7X10 -8 1.0X10 5 2.7X10 -6 P-33 - 1.0X10 5 2.7X10 -6 1.0X10 8 2.7X10 -3 Pa-230 Protactinium (91) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Pa-231 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Pa-233 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Pb-201 Lead (82) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Pb-202 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Pb-203 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Pb-205 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Pb-210 (b) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Pb-212 (b) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Pd-103 Palladium (46) 1.0X10 3 2.7X10 -8 1.0X10 8 2.7X10 -3 Pd-107 - 1.0X10 5 2.7X10 -6 1.0X10 8 2.7X10 -3 Pd-109 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Pm-143 Promethium (61) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Pm-144 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Pm-145 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Pm-147 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Pm-148m - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Pm-149 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Pm-151 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Po-210 Polonium (84) 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Pr-142 Praseodymium (59) 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Pr-143 - 1.0X10 4 2.7X10 -7 1.0X10 6 2.7X10 -5 Pt-188 Platinum (78) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Pt-191 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Pt-193 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Pt-193m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Pt-195m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Pt-197 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Pt-197m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Pu-236 Plutonium (94) 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Pu-237 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Pu-238 - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Pu-239 - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Pu-240 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Pu-241 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Pu-242 - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Pu-244 - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Ra-223 (b) Radium (88) 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Ra-224 (b) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Ra-225 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Ra-226 (b) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Ra-228 (b) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Rb-81 Rubidium (37) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Rb-83 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Rb-84 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Rb-86 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Rb-87 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Rb (nat) - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Re-184 Rhenium (75) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Re-184m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Re-186 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Re-187 - 1.0X10 6 2.7X10 -5 1.0X10 9 2.7X10 -2 Re-188 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Re-189 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Re (nat) - 1.0X10 6 2.7X10 -5 1.0X10 9 2.7X10 -2 Rh-99 Rhodium (45) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Rh-101 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Rh-102 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Rh-102m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Rh-103m - 1.0X10 4 2.7X10 -7 1.0X10 8 2.7X10 -3 Rh-105 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Rn-222 (b) Radon (86) 1.0X10 1 2.7X10 -10 1.0X10 8 2.7X10 -3 Ru-97 Ruthenium (44) 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Ru-103 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ru-105 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Ru-106 (b) - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 S-35 Sulphur (16) 1.0X10 5 2.7X10 -6 1.0X10 8 2.7X10 -3 Sb-122 Antimony (51) 1.0X10 2 2.7X10 -9 1.0X10 4 2.7X10 -7 Sb-124 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Sb-125 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Sb-126 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Sc-44 Scandium (21) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Sc-46 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Sc-47 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Sc-48 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Se-75 Selenium (34) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Se-79 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Si-31 Silicon (14) 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Si-32 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Sm-145 Samarium (62) 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Sm-147 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Sm-151 - 1.0X10 4 2.7X10 -7 1.0X10 8 2.7X10 -3 Sm-153 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Sn-113 Tin (50) 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Sn-117m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Sn-119m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Sn-121m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Sn-123 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Sn-125 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Sn-126 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Sr-82 Strontium (38) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Sr-85 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Sr-85m - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Sr-87m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Sr-89 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Sr-90 (b) - 1.0X10 2 2.7X10 -9 1.0X10 4 2.7X10 -7 Sr-91 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Sr-92 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 T(H-3) Tritium (1) 1.0X10 6 2.7X10 -5 1.0X10 9 2.7X10 -2 Ta-178 (long-lived) Tantalum (73) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Ta-179 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Ta-182 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Tb-157 Terbium (65) 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Tb-158 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Tb-160 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Tc-95m Technetium (43) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Tc-96 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Tc-96m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Tc-97 - 1.0X10 3 2.7X10 -8 1.0X10 8 2.7X10 -3 Tc-97m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Tc-98 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Tc-99 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Tc-99m - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Te-121 Tellurium (52) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Te-121m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Te-123m - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Te-125m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Te-127 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Te-127m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Te-129 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Te-129m - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Te-131m - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Te-132 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Th-227 Thorium (90) 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Th-228 (b) - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Th-229 (b) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Th-230 - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Th-231 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Th-232 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Th-234 (b) - 1.0X10 3 2.7X10 -8 1.0X10 5 2.7X10 -6 Th (nat) (b) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Ti-44 Titanium (22) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Tl-200 Thallium (81) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Tl-201 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Tl-202 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Tl-204 - 1.0X10 4 2.7X10 -7 1.0X10 4 2.7X10 -7 Tm-167 Thulium (69) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Tm-170 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Tm-171 - 1.0X10 4 2.7X10 -7 1.0X10 8 2.7X10 -3 U-230 (fast lung absorption) (b), (d) Uranium (92) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 U-230 (medium lung absorption) (e) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-230 (slow lung absorption) (f) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-232 (fast lung absorption) (b), (d) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 U-232 (medium lung absorption) (e) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-232 (slow lung absorption) (f) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-233 (fast lung absorption) (d) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-233 (medium lung absorption) (e) - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 U-233 (slow lung absorption) (f) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 U-234 (fast lung absorption) (d) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-234 (medium lung absorption) (e) - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 U-234 (slow lung absorption) (f) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 U-235 (all lung absorption types) (b), (d), (e), (f) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-236 (fast lung absorption) (d) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-236 (medium lung absorption) (e) - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 U-236 (slow lung absorption) (f) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-238 (all lung absorption types) (b), (d), (e), (f) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U (nat) (b) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 U (enriched to 20% or less) (g) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 U (dep) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 V-48 Vanadium (23) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 V-49 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 W-178 Tungsten (74) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 W-181 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 W-185 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 W-187 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 W-188 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Xe-122 Xenon (54) 1.0X10 2 2.7X10 -9 1.0X10 9 2.7X10 -2 Xe-123 - 1.0X10 2 2.7X10 -9 1.0X10 9 2.7X10 -2 Xe-127 - 1.0X10 3 2.7X10 -8 1.0X10 5 2.7X10 -6 Xe-131m - 1.0X10 4 2.7X10 -7 1.0X10 4 2.7X10 -7 Xe-133 - 1.0X10 3 2.7X10 -8 1.0X10 4 2.7X10 -7 Xe-135 - 1.0X10 3 2.7X10 -8 1.0X10 10 2.7X10 -1 Y-87 Yttrium (39) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Y-88 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Y-90 - 1.0X10 3 2.7X10 -8 1.0X10 5 2.7X10 -6 Y-91 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Y-91m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Y-92 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Y-93 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Yb-169 Ytterbium (70) 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Yb-175 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Zn-65 Zinc (30) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Zn-69 - 1.0X10 4 2.7X10 -7 1.0X10 6 2.7X10 -5 Zn-69m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Zr-88 Zirconium (40) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Zr-93 (b) - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Zr-95 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Zr-97 (b) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 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) 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Ac-227 - 1.0X10 -1 2.7X10 -12 1.0X10 3 2.7X10 -8 Ac-228 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Ag-105 Silver (47) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ag-108m (b) - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Ag-110m - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Ag-111 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Al-26 Aluminum (13) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Am-241 Americium (95) 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Am-242m (b) - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Am-243 (b) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Ar-37 Argon (18) 1.0X10 6 2.7X10 -5 1.0X10 8 2.7X10 -3 Ar-39 - 1.0X10 7 2.7X10 -4 1.0X10 4 2.7X10 -7 Ar-41 - 1.0X10 2 2.7X10 -9 1.0X10 9 2.7X10 -2 As-72 Arsenic (33) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 As-73 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 As-74 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 As-76 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 As-77 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 At-211 Astatine (85) 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Au-193 Gold (79) 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Au-194 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Au-195 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Au-198 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Au-199 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ba-131 Barium (56) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ba-133 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ba-133m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ba-140 (b) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Be-7 Beryllium (4) 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Be-10 - 1.0X10 4 2.7X10 -7 1.0X10 6 2.7X10 -5 Bi-205 Bismuth (83) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Bi-206 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Bi-207 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Bi-210 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Bi-210m - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Bi-212 (b) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Bk-247 Berkelium (97) 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Bk-249 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Br-76 Bromine (35) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Br-77 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Br-82 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 C-11 Carbon (6) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 C-14 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Ca-41 Calcium (20) 1.0X10 5 2.7X10 -6 1.0X10 7 2.7X10 -4 Ca-45 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Ca-47 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Cd-109 Cadmium (48) 1.0X10 4 2.7X10 -7 1.0X10 6 2.7X10 -5 Cd-113m - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Cd-115 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Cd-115m - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Ce-139 Cerium (58) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ce-141 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Ce-143 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ce-144 (b) - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Cf-248 Californium (98) 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Cf-249 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Cf-250 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Cf-251 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Cf-252 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Cf-253 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Cf-254 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Cl-36 Chlorine (17) 1.0X10 4 2.7X10 -7 1.0X10 6 2.7X10 -5 Cl-38 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Cm-240 Curium (96) 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Cm-241 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Cm-242 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Cm-243 - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Cm-244 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Cm-245 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Cm-246 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Cm-247 - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Cm-248 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Co-55 Cobalt (27) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Co-56 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Co-57 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Co-58 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Co-58m - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Co-60 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Cr-51 Chromium (24) 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Cs-129 Cesium (55) 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Cs-131 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Cs-132 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Cs-134 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Cs-134m - 1.0X10 3 2.7X10 -8 1.0X10 5 2.7X10 -6 Cs-135 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Cs-136 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Cs-137 (b) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Cu-64 Copper (29) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Cu-67 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Dy-159 Dysprosium (66) 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Dy-165 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Dy-166 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Er-169 Erbium (68) 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Er-171 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Eu-147 Europium (63) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Eu-148 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Eu-149 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Eu-150 (short lived) - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Eu-150 (long lived) - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Eu-152 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Eu-152m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Eu-154 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Eu-155 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Eu-156 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 F-18 Fluorine (9) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Fe-52 Iron (26) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Fe-55 - 1.0X10 4 2.7X10 -7 1.0X10 6 2.7X10 -5 Fe-59 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Fe-60 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Ga-67 Gallium (31) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ga-68 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Ga-72 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Gd-146 Gadolinium (64) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Gd-148 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Gd-153 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Gd-159 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Ge-68 Germanium (32) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Ge-71 - 1.0X10 4 2.7X10 -7 1.0X10 8 2.7X10 -3 Ge-77 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Hf-172 Hafnium (72) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Hf-175 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Hf-181 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Hf-182 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Hg-194 Mercury (80) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Hg-195m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Hg-197 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Hg-197m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Hg-203 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Ho-166 Holmium (67) 1.0X10 3 2.7X10 -8 1.0X10 5 2.7X10 -6 Ho-166m - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 I-123 Iodine (53) 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 I-124 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 I-125 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 I-126 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 I-129 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 I-131 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 I-132 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 I-133 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 I-134 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 I-135 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 In-111 Indium (49) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 In-113m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 In-114m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 In-115m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ir-189 Iridium (77) 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Ir-190 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Ir-192 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Ir-194 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 K-40 Potassium (19) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 K-42 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 K-43 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Kr-79 Krypton (36) 1.0X10 3 2.7X10 -8 1.0X10 5 2.7X10 -6 Kr-81 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Kr-85 - 1.0X10 5 2.7X10 -6 1.0X10 4 2.7X10 -7 Kr-85m - 1.0X10 3 2.7X10 -8 1.0X10 10 2.7X10 -1 Kr-87 - 1.0X10 2 2.7X10 -9 1.0X10 9 2.7X10 -2 La-137 Lanthanum (57) 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 La-140 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Lu-172 Lutetium (71) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Lu-173 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Lu-174 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Lu-174m - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Lu-177 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Mg-28 Magnesium (12) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Mn-52 Manganese (25) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Mn-53 - 1.0X10 4 2.7X10 -7 1.0X10 9 2.7X10 -2 Mn-54 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Mn-56 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Mo-93 Molybdenum (42) 1.0X10 3 2.7X10 -8 1.0X10 8 2.7X10 -3 Mo-99 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 N-13 Nitrogen (7) 1.0X10 2 2.7X10 -9 1.0X10 9 2.7X10 -2 Na-22 Sodium (11) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Na-24 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Nb-93m Niobium (41) 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Nb-94 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Nb-95 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Nb-97 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Nd-147 Neodymium (60) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Nd-149 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ni-59 Nickel (28) 1.0X10 4 2.7X10 -7 1.0X10 8 2.7X10 -3 Ni-63 - 1.0X10 5 2.7X10 -6 1.0X10 8 2.7X10 -3 Ni-65 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Np-235 Neptunium (93) 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Np-236 (short-lived) - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Np-236 (long-lived) - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Np-237 (b) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Np-239 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Os-185 Osmium (76) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Os-191 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Os-191m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Os-193 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Os-194 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 P-32 Phosphorus (15) 1.0X10 3 2.7X10 -8 1.0X10 5 2.7X10 -6 P-33 - 1.0X10 5 2.7X10 -6 1.0X10 8 2.7X10 -3 Pa-230 Protactinium (91) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Pa-231 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Pa-233 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Pb-201 Lead (82) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Pb-202 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Pb-203 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Pb-205 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Pb-210 (b) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Pb-212 (b) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Pd-103 Palladium (46) 1.0X10 3 2.7X10 -8 1.0X10 8 2.7X10 -3 Pd-107 - 1.0X10 5 2.7X10 -6 1.0X10 8 2.7X10 -3 Pd-109 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Pm-143 Promethium (61) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Pm-144 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Pm-145 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Pm-147 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Pm-148m - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Pm-149 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Pm-151 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Po-210 Polonium (84) 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Pr-142 Praseodymium (59) 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Pr-143 - 1.0X10 4 2.7X10 -7 1.0X10 6 2.7X10 -5 Pt-188 Platinum (78) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Pt-191 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Pt-193 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Pt-193m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Pt-195m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Pt-197 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Pt-197m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Pu-236 Plutonium (94) 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Pu-237 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Pu-238 - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Pu-239 - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Pu-240 - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Pu-241 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Pu-242 - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Pu-244 - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Ra-223 (b) Radium (88) 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Ra-224 (b) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Ra-225 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Ra-226 (b) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Ra-228 (b) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Rb-81 Rubidium (37) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Rb-83 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Rb-84 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Rb-86 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Rb-87 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Rb (nat) - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Re-184 Rhenium (75) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Re-184m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Re-186 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Re-187 - 1.0X10 6 2.7X10 -5 1.0X10 9 2.7X10 -2 Re-188 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Re-189 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Re (nat) - 1.0X10 6 2.7X10 -5 1.0X10 9 2.7X10 -2 Rh-99 Rhodium (45) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Rh-101 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Rh-102 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Rh-102m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Rh-103m - 1.0X10 4 2.7X10 -7 1.0X10 8 2.7X10 -3 Rh-105 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Rn-222 (b) Radon (86) 1.0X10 1 2.7X10 -10 1.0X10 8 2.7X10 -3 Ru-97 Ruthenium (44) 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Ru-103 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Ru-105 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Ru-106 (b) - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 S-35 Sulphur (16) 1.0X10 5 2.7X10 -6 1.0X10 8 2.7X10 -3 Sb-122 Antimony (51) 1.0X10 2 2.7X10 -9 1.0X10 4 2.7X10 -7 Sb-124 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Sb-125 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Sb-126 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Sc-44 Scandium (21) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Sc-46 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Sc-47 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Sc-48 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Se-75 Selenium (34) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Se-79 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Si-31 Silicon (14) 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Si-32 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Sm-145 Samarium (62) 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Sm-147 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Sm-151 - 1.0X10 4 2.7X10 -7 1.0X10 8 2.7X10 -3 Sm-153 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Sn-113 Tin (50) 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Sn-117m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Sn-119m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Sn-121m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Sn-123 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Sn-125 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Sn-126 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Sr-82 Strontium (38) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Sr-85 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Sr-85m - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Sr-87m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Sr-89 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Sr-90 (b) - 1.0X10 2 2.7X10 -9 1.0X10 4 2.7X10 -7 Sr-91 - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Sr-92 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 T(H-3) Tritium (1) 1.0X10 6 2.7X10 -5 1.0X10 9 2.7X10 -2 Ta-178 (long-lived) Tantalum (73) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Ta-179 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Ta-182 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Tb-157 Terbium (65) 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Tb-158 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Tb-160 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Tc-95m Technetium (43) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Tc-96 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Tc-96m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Tc-97 - 1.0X10 3 2.7X10 -8 1.0X10 8 2.7X10 -3 Tc-97m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Tc-98 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Tc-99 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 Tc-99m - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Te-121 Tellurium (52) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Te-121m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Te-123m - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Te-125m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Te-127 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Te-127m - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Te-129 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Te-129m - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Te-131m - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Te-132 - 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Th-227 Thorium (90) 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Th-228 (b) - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Th-229 (b) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Th-230 - 1.0 2.7X10 -11 1.0X10 4 2.7X10 -7 Th-231 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Th-232 - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 Th-234 (b) - 1.0X10 3 2.7X10 -8 1.0X10 5 2.7X10 -6 Th (nat) (b) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 Ti-44 Titanium (22) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 Tl-200 Thallium (81) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Tl-201 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Tl-202 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Tl-204 - 1.0X10 4 2.7X10 -7 1.0X10 4 2.7X10 -7 Tm-167 Thulium (69) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Tm-170 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Tm-171 - 1.0X10 4 2.7X10 -7 1.0X10 8 2.7X10 -3 U-230 (fast lung absorption) (b), (d) Uranium (92) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 U-230 (medium lung absorption) (e) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-230 (slow lung absorption) (f) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-232 (fast lung absorption) (b), (d) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 U-232 (medium lung absorption) (e) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-232 (slow lung absorption) (f) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-233 (fast lung absorption) (d) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-233 (medium lung absorption) (e) - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 U-233 (slow lung absorption) (f) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 U-234 (fast lung absorption) (d) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-234 (medium lung absorption) (e) - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 U-234 (slow lung absorption) (f) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 U-235 (all lung absorption types) (b), (d), (e), (f) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-236 (fast lung absorption) (d) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-236 (medium lung absorption) (e) - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 U-236 (slow lung absorption) (f) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U-238 (all lung absorption types) (b), (d), (e), (f) - 1.0X10 1 2.7X10 -10 1.0X10 4 2.7X10 -7 U (nat) (b) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 U (enriched to 20% or less) (g) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 U (dep) - 1.0 2.7X10 -11 1.0X10 3 2.7X10 -8 V-48 Vanadium (23) 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 V-49 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 W-178 Tungsten (74) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 W-181 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 W-185 - 1.0X10 4 2.7X10 -7 1.0X10 7 2.7X10 -4 W-187 - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 W-188 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Xe-122 Xenon (54) 1.0X10 2 2.7X10 -9 1.0X10 9 2.7X10 -2 Xe-123 - 1.0X10 2 2.7X10 -9 1.0X10 9 2.7X10 -2 Xe-127 - 1.0X10 3 2.7X10 -8 1.0X10 5 2.7X10 -6 Xe-131m - 1.0X10 4 2.7X10 -7 1.0X10 4 2.7X10 -7 Xe-133 - 1.0X10 3 2.7X10 -8 1.0X10 4 2.7X10 -7 Xe-135 - 1.0X10 3 2.7X10 -8 1.0X10 10 2.7X10 -1 Y-87 Yttrium (39) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Y-88 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Y-90 - 1.0X10 3 2.7X10 -8 1.0X10 5 2.7X10 -6 Y-91 - 1.0X10 3 2.7X10 -8 1.0X10 6 2.7X10 -5 Y-91m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Y-92 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Y-93 - 1.0X10 2 2.7X10 -9 1.0X10 5 2.7X10 -6 Yb-169 Ytterbium (70) 1.0X10 2 2.7X10 -9 1.0X10 7 2.7X10 -4 Yb-175 - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Zn-65 Zinc (30) 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Zn-69 - 1.0X10 4 2.7X10 -7 1.0X10 6 2.7X10 -5 Zn-69m - 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Zr-88 Zirconium (40) 1.0X10 2 2.7X10 -9 1.0X10 6 2.7X10 -5 Zr-93 (b) - 1.0X10 3 2.7X10 -8 1.0X10 7 2.7X10 -4 Zr-95 - 1.0X10 1 2.7X10 -10 1.0X10 6 2.7X10 -5 Zr-97 (b) - 1.0X10 1 2.7X10 -10 1.0X10 5 2.7X10 -6 (a) (Reserved) (b) Parent nuclides and their progeny included in secular equilibrium are listed as follows: Sr-90 Y-90 Zr-93 Nb-93m Zr-97 Nb-97 Ru-106 Rh-106 Ag-108m Ag-108 Cs-137 Ba-137m Ce-144 Pr-144 Ba-140 La-140 Bi-212 Tl-208 (0.36), Po-212 (0.64) Pb-210 Bi-210, Po-210 Pb-212 Bi-212, Tl-208 (0.36), Po-212 (0.64) Rn-222 Po-218, Pb-214, Bi-214, Po-214 Ra-223 Rn-219, Po-215, Pb-211, Bi-211, Tl-207 Ra-224 Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36), Po-212 (0.64) Ra-226 Rn-222, Po-218, Pb-214, Bi-214, Po-214, Pb-210, Bi-210, Po-210 Ra-228 Ac-228 Th-228 Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36), Po-212 (0.64) Th-229 Ra-225, Ac-225, Fr-221, At-217, Bi-213, Po-213, Pb-209 Th-nat Ra-228, Ac-228, Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36), Po-212 (0.64) Th-234 Pa-234m U-230 Th-226, Ra-222, Rn-218, Po-214 U-232 Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36), Po-212 (0.64) U-235 Th-231 U-238 Th-234, Pa-234m U-nat Th-234, Pa-234m, U-234, Th-230, Ra-226, Rn-222, Po-218, Pb-214, Bi-214, Po-214, Pb-210, Bi-210, Po-210 Np-237 Pa-233 Am-242m Am-242 Am-243 Np-239 (c) (Reserved) (d) These values apply only to compounds of uranium that take the chemical form of UF 6 , UO 2 F 2 and UO 2 (NO 3 ) 2 in both normal and accident conditions of transport. (e) These values apply only to compounds of uranium that take the chemical form of UO 3 , UF 4 , UCl 4 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. Table A-3. General Values for A1 and A2 A 1 A 2 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) Only beta or gamma emitting radionuclides are known to be present 1 x 10 -1 2.7 x 10 0 2 x 10 -2 5.4 x 10 -1 1 x 10 1 2.7 x 10 -10 1 x 10 4 2.7 x 10 -7 Alpha emitting nuclides, but no neutron emitters, are known to be present (a) 2 x 10 -1 5.4 x 10 0 9 x 10 -5 2.4 x 10 -3 1 x 10 -1 2.7 x 10 -12 1 x 10 3 2.7 x 10 -8 Neutron emitting nuclides are known to be present or no relevant data are available 1 x 10 -3 2.7 x 10 -2 9 x 10 -5 2.4 x 10 -3 1 x 10 -1 2.7 x 10 -12 1 x 10 3 2.7 x 10 -8 A 1 A 2 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) Only beta or gamma emitting radionuclides are known to be present 1 x 10 -1 2.7 x 10 0 2 x 10 -2 5.4 x 10 -1 1 x 10 1 2.7 x 10 -10 1 x 10 4 2.7 x 10 -7 Alpha emitting nuclides, but no neutron emitters, are known to be present (a) 2 x 10 -1 5.4 x 10 0 9 x 10 -5 2.4 x 10 -3 1 x 10 -1 2.7 x 10 -12 1 x 10 3 2.7 x 10 -8 Neutron emitting nuclides are known to be present or no relevant data are available 1 x 10 -3 2.7 x 10 -2 9 x 10 -5 2.4 x 10 -3 1 x 10 -1 2.7 x 10 -12 1 x 10 3 2.7 x 10 -8 (a) If beta or gamma emitting nuclides are known to be present, the A 1 value of 0.1 TBq (2.7 Ci) should be used. Table A-4. Activity-Mass Relationships for Uranium Uranium Enrichment 1 wt % U-235 present Specific Activity TBq/g Ci/g 0.45 1.8 x 10 -8 5.0 x 10 -7 0.72 2.6 x 10 -8 7.1 x 10 -7 1 2.8 x 10 -8 7.6 x 10 -7 1.5 3.7 x 10 -8 1.0 x 10 -6 5 1.0 x 10 -7 2.7 x 10 -6 10 1.8 x 10 -7 4.8 x 10 -6 20 3.7 x 10 -7 1.0 x 10 -5 35 7.4 x 10 -7 2.0 x 10 -5 50 9.3 x 10 -7 2.5 x 10 -5 90 2.2 x 10 -6 5.8 x 10 -5 93 2.6 x 10 -6 7.0 x 10 -5 95 3.4 x 10 -6 9.1 x 10 -5 Uranium Enrichment 1 wt % U-235 present Specific Activity TBq/g Ci/g 0.45 1.8 x 10 -8 5.0 x 10 -7 0.72 2.6 x 10 -8 7.1 x 10 -7 1 2.8 x 10 -8 7.6 x 10 -7 1.5 3.7 x 10 -8 1.0 x 10 -6 5 1.0 x 10 -7 2.7 x 10 -6 10 1.8 x 10 -7 4.8 x 10 -6 20 3.7 x 10 -7 1.0 x 10 -5 35 7.4 x 10 -7 2.0 x 10 -5 50 9.3 x 10 -7 2.5 x 10 -5 90 2.2 x 10 -6 5.8 x 10 -5 93 2.6 x 10 -6 7.0 x 10 -5 95 3.4 x 10 -6 9.1 x 10 -5 1 The figures for uranium include representative values for the activity of the uranium-234 that is concentrated during the enrichment process. 1 The figures for uranium include representative values for the activity of the uranium-234 that is concentrated during the enrichment process.