10 CFR Part 20, Appendix C to Part 20 - Quantities 1 of Licensed Material Requiring Labeling

View PDF at GPO Pt. 20, App. C
Appendix C to Part 20—Quantities 1 of Licensed Material Requiring Labeling
Radionuclide Quantity (µCi)
1 The quantities listed above were derived by taking 1/10th of the most restrictive ALI listed in table 1, columns 1 and 2, of appendix B to §§ 20.1001-20.2401 of this part, rounding to the nearest factor of 10, and arbitrarily constraining the values listed between 0.001 and 1,000 µCi. Values of 100 µCi have been assigned for radionuclides having a radioactive half-life in excess of 109 years (except rhenium, 1000 µCi) to take into account their low specific activity.
Note: For purposes of §§ 20.1902(e), 20.1905(a), and 20.2201(a) where there is involved a combination of radionuclides in known amounts, the limit for the combination should be derived as follows: determine, for each radionuclide in the combination, the ratio between the quantity present in the combination and the limit otherwise established for the specific radionuclide when not in combination. The sum of such ratios for all radionuclides in the combination may not exceed “1” (i.e., “unity”).
Hydrogen-3 1,000
Beryllium-7 1,000
Beryllium-10 1
Carbon-11 1,000
Carbon-14 100
Fluorine-18 1,000
Sodium-22 10
Sodium-24 100
Magnesium-28 100
Aluminum-26 10
Silicon-31 1,000
Silicon-32 1
Phosphorus-32 10
Phosphorus-33 100
Sulfur-35 100
Chlorine-36 10
Chlorine-38 1,000
Chlorine-39 1,000
Argon-39 1,000
Argon-41 1,000
Potassium-40 100
Potassium-42 1,000
Potassium-43 1,000
Potassium-44 1,000
Potassium-45 1,000
Calcium-41 100
Calcium-45 100
Calcium-47 100
Scandium-43 1,000
Scandium-44m 100
Scandium-44 100
Scandium-46 10
Scandium-47 100
Scandium-48 100
Scandium-49 1,000
Titanium-44 1
Titanium-45 1,000
Vanadium-47 1,000
Vanadium-48 100
Vanadium-49 1,000
Chromium-48 1,000
Chromium-49 1,000
Chromium-51 1,000
Manganese-51 1,000
Manganese-52m 1,000
Manganese-52 100
Manganese-53 1,000
Manganese-54 100
Manganese-56 1,000
Iron-52 100
Iron-55 100
Iron-59 10
Iron-60 1
Cobalt-55 100
Cobalt-56 10
Cobalt-57 100
Cobalt-58m 1,000
Cobalt-58 100
Cobalt-60m 1,000
Cobalt-60 1
Cobalt-61 1,000
Cobalt-62m 1,000
Nickel-56 100
Nickel-57 100
Nickel-59 100
Nickel-63 100
Nickel-65 1,000
Nickel-66 10
Copper-60 1,000
Copper-61 1,000
Copper-64 1,000
Copper-67 1,000
Zinc-62 100
Zinc-63 1,000
Zinc-65 10
Zinc-69m 100
Zinc-69 1,000
Zinc-71m 1,000
Zinc-72 100
Gallium-65 1,000
Gallium-66 100
Gallium-67 1,000
Gallium-68 1,000
Gallium-70 1,000
Gallium-72 100
Gallium-73 1,000
Germanium-66 1,000
Germanium-67 1,000
Germanium-68 10
Germanium-69 1,000
Germanium-71 1,000
Germanium-75 1,000
Germanium-77 1,000
Germanium-78 1,000
Arsenic-69 1,000
Arsenic-70 1,000
Arsenic-71 100
Arsenic-72 100
Arsenic-73 100
Arsenic-74 100
Arsenic-76 100
Arsenic-77 100
Arsenic-78 1,000
Selenium-70 1,000
Selenium-73m 1,000
Selenium-73 100
Selenium-75 100
Selenium-79 100
Selenium-81m 1,000
Selenium-81 1,000
Selenium-83 1,000
Bromine-74m 1,000
Bromine-74 1,000
Bromine-75 1,000
Bromine-76 100
Bromine-77 1,000
Bromine-80m 1,000
Bromine-80 1,000
Bromine-82 100
Bromine-83 1,000
Bromine-84 1,000
Krypton-74 1,000
Krypton-76 1,000
Krypton-77 1,000
Krypton-79 1,000
Krypton-81 1,000
Krypton-83m 1,000
Krypton-85m 1,000
Krypton-85 1,000
Krypton-87 1,000
Krypton-88 1,000
Rubidium-79 1,000
Rubidium-81m 1,000
Rubidium-81 1,000
Rubidium-82m 1,000
Rubidium-83 100
Rubidium-84 100
Rubidium-86 100
Rubidium-87 100
Rubidium-88 1,000
Rubidium-89 1,000
Strontium-80 100
Strontium-81 1,000
Strontium-83 100
Strontium-85m 1,000
Strontium-85 100
Strontium-87m 1,000
Strontium-89 10
Strontium-90 0.1
Strontium-91 100
Strontium-92 100
Yttrium-86m 1,000
Yttrium-86 100
Yttrium-87 100
Yttrium-88 10
Yttrium-90m 1,000
Yttrium-90 10
Yttrium-91m 1,000
Yttrium-91 10
Yttrium-92 100
Yttrium-93 100
Yttrium-94 1,000
Yttrium-95 1,000
Zirconium-86 100
Zirconium-88 10
Zirconium-89 100
Zirconium-93 1
Zirconium-95 10
Zirconium-97 100
Niobium-88 1,000
Niobium-89m (66 min) 1,000
Niobium-89 (122 min) 1,000
Niobium-90 100
Niobium-93m 10
Niobium-94 1
Niobium-95m 100
Niobium-95 100
Niobium-96 100
Niobium-97 1,000
Niobium-98 1,000
Molybdenum-90 100
Molybdenum-93m 100
Molybdenum-93 10
Molybdenum-99 100
Molybdenum-101 1,000
Technetium-93m 1,000
Technetium-93 1,000
Technetium-94m 1,000
Technetium-94 1,000
Technetium-96m 1,000
Technetium-96 100
Technetium-97m 100
Technetium-97 1,000
Technetium-98 10
Technetium-99m 1,000
Technetium-99 100
Technetium-101 1,000
Technetium-104 1,000
Ruthenium-94 1,000
Ruthenium-97 1,000
Ruthenium-103 100
Ruthenium-105 1,000
Ruthenium-106 1
Rhodium-99m 1,000
Rhodium-99 100
Rhodium-100 100
Rhodium-101m 1,000
Rhodium-101 10
Rhodium-102m 10
Rhodium-102 10
Rhodium-103m 1,000
Rhodium-105 100
Rhodium-106m 1,000
Rhodium-107 1,000
Palladium-100 100
Palladium-101 1,000
Palladium-103 100
Palladium-107 10
Palladium-109 100
Silver-102 1,000
Silver-103 1,000
Silver-104m 1,000
Silver-104 1,000
Silver-105 100
Silver-106m 100
Silver-106 1,000
Silver-108m 1
Silver-110m 10
Silver-111 100
Silver-112 100
Silver-115 1,000
Cadmium-104 1,000
Cadmium-107 1,000
Cadmium-109 1
Cadmium-113m 0.1
Cadmium-113 100
Cadmium-115m 10
Cadmium-115 100
Cadmium-117m 1,000
Cadmium-117 1,000
Indium-109 1,000
Indium-110 (69.1min.) 1,000
Indium-110
(4.9h) 1,000
Indium-111 100
Indium-112 1,000
Indium-113m 1,000
Indium-114m 10
Indium-115m 1,000
Indium-115 100
Indium-116m 1,000
Indium-117m 1,000
Indium-117 1,000
Indium-119m 1,000
Tin-110 100
Tin-111 1,000
Tin-113 100
Tin-117m 100
Tin-119m 100
Tin-121m 100
Tin-121 1,000
Tin-123m 1,000
Tin-123 10
Tin-125 10
Tin-126 10
Tin-127 1,000
Tin-128 1,000
Antimony-115 1,000
Antimony-116m 1,000
Antimony-116 1,000
Antimony-117 1,000
Antimony-118m 1,000
Antimony-119 1,000
Antimony-120 (16min.) 1,000
Antimony-120 (5.76d) 100
Antimony-122 100
Antimony-124m 1,000
Antimony-124 10
Antimony-125 100
Antimony-126m 1,000
Antimony-126 100
Antimony-127 100
Antimony-128 (10.4min.) 1,000
Antimony-128 (9.01h) 100
Antimony-129 100
Antimony-130 1,000
Antimony-131 1,000
Tellurium-116 1,000
Tellurium-121m 10
Tellurium-121 100
Tellurium-123m 10
Tellurium-123 100
Tellurium-125m 10
Tellurium-127m 10
Tellurium-127 1,000
Tellurium-129m 10
Tellurium-129 1,000
Tellurium-131m 10
Tellurium-131 100
Tellurium-132 10
Tellurium-133m 100
Tellurium-133 1,000
Tellurium-134 1,000
Iodine-120m 1,000
Iodine-120 100
Iodine-121 1,000
Iodine-123 100
Iodine-124 10
Iodine-125 1
Iodine-126 1
Iodine-128 1,000
Iodine-129 1
Iodine-130 10
Iodine-131 1
Iodine-132m 100
Iodine-132 100
Iodine-133 10
Iodine-134 1,000
Iodine-135 100
Xenon-120 1,000
Xenon-121 1,000
Xenon-122 1,000
Xenon-123 1,000
Xenon-125 1,000
Xenon-127 1,000
Xenon-129m 1,000
Xenon-131m 1,000
Xenon-133m 1,000
Xenon-133 1,000
Xenon-135m 1,000
Xenon-135 1,000
Xenon-138 1,000
Cesium-125 1,000
Cesium-127 1,000
Cesium-129 1,000
Cesium-130 1,000
Cesium-131 1,000
Cesium-132 100
Cesium-134m 1,000
Cesium-134 10
Cesium-135m 1,000
Cesium-135 100
Cesium-136 10
Cesium-137 10
Cesium-138 1,000
Barium-126 1,000
Barium-128 100
Barium-131m 1,000
Barium-131 100
Barium-133m 100
Barium-133 100
Barium-135m 100
Barium-139 1,000
Barium-140 100
Barium-141 1,000
Barium-142 1,000
Lanthanum-131 1,000
Lanthanum-132 100
Lanthanum-135 1,000
Lanthanum-137 10
Lanthanum-138 100
Lanthanum-140 100
Lanthanum-141 100
Lanthanum-142 1,000
Lanthanum-143 1,000
Cerium-134 100
Cerium-135 100
Cerium-137m 100
Cerium-137 1,000
Cerium-139 100
Cerium-141 100
Cerium-143 100
Cerium-144 1
Praseodymium-136 1,000
Praseodymium-137 1,000
Praseodymium-138m 1,000
Praseodymium-139 1,000
Praseodymium-142m 1,000
Praseodymium-142 100
Praseodymium-143 100
Praseodymium-144 1,000
Praseodymium-145 100
Praseodymium-147 1,000
Neodymium-136 1,000
Neodymium-138 100
Neodymium-139m 1,000
Neodymium-139 1,000
Neodymium-141 1,000
Neodymium-147 100
Neodymium-149 1,000
Neodymium-151 1,000
Promethium-141 1,000
Promethium-143 100
Promethium-144 10
Promethium-145 10
Promethium-146 1
Promethium-147 10
Promethium-148m 10
Promethium-148 10
Promethium-149 100
Promethium-150 1,000
Promethium-151 100
Samarium-141m 1,000
Samarium-141 1,000
Samarium-142 1,000
Samarium-145 100
Samarium-146 1
Samarium-147 100
Samarium-151 10
Samarium-153 100
Samarium-155 1,000
Samarium-156 1,000
Europium-145 100
Europium-146 100
Europium-147 100
Europium-148 10
Europium-149 100
Europium-150 (12.62h) 100
Europium-150 (34.2y) 1
Europium-152m 100
Europium-152 1
Europium-154 1
Europium-155 10
Europium-156 100
Europium-157 100
Europium-158 1,000
Gadolinium-145 1,000
Gadolinium-146 10
Gadolinium-147 100
Gadolinium-148 0.001
Gadolinium-149 100
Gadolinium-151 10
Gadolinium-152 100
Gadolinium-153 10
Gadolinium-159 100
Terbium-147 1,000
Terbium-149 100
Terbium-150 1,000
Terbium-151 100
Terbium-153 1,000
Terbium-154 100
Terbium-155 1,000
Terbium-156m (5.0h) 1,000
Terbium-156m (24.4h) 1,000
Terbium-156 100
Terbium-157 10
Terbium-158 1
Terbium-160 10
Terbium-161 100
Dysprosium-155 1,000
Dysprosium-157 1,000
Dysprosium-159 100
Dysprosium-165 1,000
Dysprosium-166 100
Holmium-155 1,000
Holmium-157 1,000
Holmium-159 1,000
Holmium-161 1,000
Holmium-162m 1,000
Holmium-162 1,000
Holmium-164m 1,000
Holmium-164 1,000
Holmium-166m 1
Holmium-166 100
Holmium-167 1,000
Erbium-161 1,000
Erbium-165 1,000
Erbium-169 100
Erbium-171 100
Erbium-172 100
Thulium-162 1,000
Thulium-166 100
Thulium-167 100
Thulium-170 10
Thulium-171 10
Thulium-172 100
Thulium-173 100
Thulium-175 1,000
Ytterbium-162 1,000
Ytterbium-166 100
Ytterbium-167 1,000
Ytterbium-169 100
Ytterbium-175 100
Ytterbium-177 1,000
Ytterbium-178 1,000
Lutetium-169 100
Lutetium-170 100
Lutetium-171 100
Lutetium-172 100
Lutetium-173 10
Lutetium-174m 10
Lutetium-174 10
Lutetium-176m 1,000
Lutetium-176 100
Lutetium-177m 10
Lutetium-177 100
Lutetium-178m 1,000
Lutetium-178 1,000
Lutetium-179 1,000
Hafnium-170 100
Hafnium-172 1
Hafnium-173 1,000
Hafnium-175 100
Hafnium-177m 1,000
Hafnium-178m 0.1
Hafnium-179m 10
Hafnium-180m 1,000
Hafnium-181 10
Hafnium-182m 1,000
Hafnium-182 0.1
Hafnium-183 1,000
Hafnium-184 100
Tantalum-172 1,000
Tantalum-173 1,000
Tantalum-174 1,000
Tantalum-175 1,000
Tantalum-176 100
Tantalum-177 1,000
Tantalum-178 1,000
Tantalum-179 100
Tantalum-180m 1,000
Tantalum-180 100
Tantalum-182m 1,000
Tantalum-182 10
Tantalum-183 100
Tantalum-184 100
Tantalum-185 1,000
Tantalum-186 1,000
Tungsten-176 1,000
Tungsten-177 1,000
Tungsten-178 1,000
Tungsten-179 1,000
Tungsten-181 1,000
Tungsten-185 100
Tungsten-187 100
Tungsten-188 10
Rhenium-177 1,000
Rhenium-178 1,000
Rhenium-181 1,000
Rhenium-182 (12.7h) 1,000
Rhenium-182 (64.0h) 100
Rhenium-184m 10
Rhenium-184 100
Rhenium-186m 10
Rhenium-186 100
Rhenium-187 1,000
Rhenium-188m 1,000
Rhenium-188 100
Rhenium-189 100
Osmium-180 1,000
Osmium-181 1,000
Osmium-182 100
Osmium-185 100
Osmium-189m 1,000
Osmium-191m 1,000
Osmium-191 100
Osmium-193 100
Osmium-194 1
Iridium-182 1,000
Iridium-184 1,000
Iridium-185 1,000
Iridium-186 100
Iridium-187 1,000
Iridium-188 100
Iridium-189 100
Iridium-190m 1,000
Iridium-190 100
Iridium-192 (73.8d) 1
Iridium-192m (1.4min.) 10
Iridium-194m 10
Iridium-194 100
Iridium-195m 1,000
Iridium-195 1,000
Platinum-186 1,000
Platinum-188 100
Platinum-189 1,000
Platinum-191 100
Platinum-193m 100
Platinum-193 1,000
Platinum-195m 100
Platinum-197m 1,000
Platinum-197 100
Platinum-199 1,000
Platinum-200 100
Gold-193 1,000
Gold-194 100
Gold-195 10
Gold-198m 100
Gold-198 100
Gold-199 100
Gold-200m 100
Gold-200 1,000
Gold-201 1,000
Mercury-193m 100
Mercury-193 1,000
Mercury-194 1
Mercury-195m 100
Mercury-195 1,000
Mercury-197m 100
Mercury-197 1,000
Mercury-199m 1,000
Mercury-203 100
Thallium-194m 1,000
Thallium-194 1,000
Thallium-195 1,000
Thallium-197 1,000
Thallium-198m 1,000
Thallium-198 1,000
Thallium-199 1,000
Thallium-200 1,000
Thallium-201 1,000
Thallium-202 100
Thallium-204 100
Lead-195m 1,000
Lead-198 1,000
Lead-199 1,000
Lead-200 100
Lead-201 1,000
Lead-202m 1,000
Lead-202 10
Lead-203 1,000
Lead-205 100
Lead-209 1,000
Lead-210 0.01
Lead-211 100
Lead-212 1
Lead-214 100
Bismuth-200 1,000
Bismuth-201 1,000
Bismuth-202 1,000
Bismuth-203 100
Bismuth-205 100
Bismuth-206 100
Bismuth-207 10
Bismuth-210m 0.1
Bismuth-210 1
Bismuth-212 10
Bismuth-213 10
Bismuth-214 100
Polonium-203 1,000
Polonium-205 1,000
Polonium-207 1,000
Polonium-210 0.1
Astatine-207 100
Astatine-211 10
Radon-220 1
Radon-222 1
Francium-222 100
Francium-223 100
Radium-223 0.1
Radium-224 0.1
Radium-225 0.1
Radium-226 0.1
Radium-227 1,000
Radium-228 0.1
Actinium-224 1
Actinium-225 0.01
Actinium-226 0.1
Actinium-227 0.001
Actinium-228 1
Thorium-226 10
Thorium-227 0.01
Thorium-228 0.001
Thorium-229 0.001
Thorium-230 0.001
Thorium-231 100
Thorium-232 100
Thorium-234 10
Thorium-natural 100
Protactinium-227 10
Protactinium-228 1
Protactinium-230 0.1
Protactinium-231 0.001
Protactinium-232 1
Protactinium-233 100
Protactinium-234 100
Uranium-230 0.01
Uranium-231 100
Uranium-232 0.001
Uranium-233 0.001
Uranium-234 0.001
Uranium-235 0.001
Uranium-236 0.001
Uranium-237 100
Uranium-238 100
Uranium-239 1,000
Uranium-240 100
Uranium-natural 100
Neptunium-232 100
Neptunium-233 1,000
Neptunium-234 100
Neptunium-235 100
Neptunium-236 (1.15×105 y) 0.001
Neptunium-236 (22.5h) 1
Neptunium-237 0.001
Neptunium-238 10
Neptunium-239 100
Neptunium-240 1,000
Plutonium-234 10
Plutonium-235 1,000
Plutonium-236 0.001
Plutonium-237 100
Plutonium-238 0.001
Plutonium-239 0.001
Plutonium-240 0.001
Plutonium-241 0.01
Plutonium-242 0.001
Plutonium-243 1,000
Plutonium-244 0.001
Plutonium-245 100
Americium-237 1,000
Americium-238 100
Americium-239 1,000
Americium-240 100
Americium-241 0.001
Americium-242m 0.001
Americium-242 10
Americium-243 0.001
Americium-244m 100
Americium-244 10
Americium-245 1,000
Americium-246m 1,000
Americium-246 1,000
Curium-238 100
Curium-240 0.1
Curium-241 1
Curium-242 0.01
Curium-243 0.001
Curium-244 0.001
Curium-245 0.001
Curium-246 0.001
Curium-247 0.001
Curium-248 0.001
Curium-249 1,000
Berkelium-245 100
Berkelium-246 100
Berkelium-247 0.001
Berkelium-249 0.1
Berkelium-250 10
Californium-244 100
Californium-246 1
Californium-248 0.01
Californium-249 0.001
Californium-250 0.001
Californium-251 0.001
Californium-252 0.001
Californium-253 0.1
Californium-254 0.001
Any alpha emitting radionuclide not listed above or mixtures of alpha emitters of unknown composition 0.001
Einsteinium-250 100
Einsteinium-251 100
Einsteinium-253 0.1
Einsteinium-254m 1
Einsteinium-254 0.01
Fermium-252 1
Fermium-253 1
Fermium-254 10
Fermium-255 1
Fermium-257 0.01
Mendelevium-257 10
Mendelevium-258 0.01
Any radionuclide other than alpha emitting radionuclides not listed above, or mixtures of beta emitters of unknown composition 0.01
[56 FR 23465, May 21, 1991; 56 FR 61352, Dec. 3, 1991. Redesignated and amended at 58 FR 67659, Dec. 22, 1993; 60 FR 20186, Apr. 25, 1995]

Title 10 published on 2014-01-01

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