Radioactive material1 | Release fraction | Possession limit (curies) |
Actinium-228 | 0.001 | 4,000 |
Americium-241 | .001 | 2 |
Americium-242 | .001 | 2 |
Americium-243 | .001 | 2 |
Antimony-124 | .01 | 4,000 |
Antimony-126 | .01 | 6,000 |
Barium-133 | .01 | 10,000 |
Barium-140 | .01 | 30,000 |
Bismuth-207 | .01 | 5,000 |
Bismuth-210 | .01 | 600 |
Cadmium-109 | .01 | 1,000 |
Cadmium-113 | .01 | 80 |
Calcium-45 | .01 | 20,000 |
Californium-2522 | .001 | 9 |
Carbon-143 | .01 | 50,000 |
Cerium-141 | .01 | 10,000 |
Cerium-144 | .01 | 300 |
Cesium-134 | .01 | 2,000 |
Cesium-137 | .01 | 3,000 |
Chlorine-36 | .5 | 100 |
Chromium-51 | .01 | 300,000 |
Cobalt-60 | .001 | 5,000 |
Copper-64 | .01 | 200,000 |
Curium-242 | .001 | 60 |
Curium-243 | .001 | 3 |
Curium-244 | .001 | 4 |
Curium-245 | .001 | 2 |
Europium-152 | .01 | 500 |
Europium-154 | .01 | 400 |
Europium-155 | .01 | 3,000 |
Germanium-68 | .01 | 2,000 |
Gadolinium-153 | .01 | 5,000 |
Gold-198 | .01 | 30,000 |
Hafnium-172 | .01 | 400 |
Hafnium-181 | .01 | 7,000 |
Holmium-166m | .01 | 100 |
Hydrogen-3 | .5 | 20,000 |
Iodine-125 | .5 | 10 |
Iodine-131 | .5 | 10 |
Indium-114m | .01 | 1,000 |
Iridium-192 | .001 | 40,000 |
Iron-55 | .01 | 40,000 |
Iron-59 | .01 | 7,000 |
Krypton-85 | 1.0 | 6,000,000 |
Lead-210 | .01 | 8 |
Manganese-56 | .01 | 60,000 |
Mercury-203 | .01 | 10,000 |
Molybdenum-99 | .01 | 30,000 |
Neptunium-237 | .001 | 2 |
Nickel-63 | .01 | 20,000 |
Niobium-94 | .01 | 300 |
Phosphorus-32 | .5 | 100 |
Phosphorus-33 | .5 | 1,000 |
Polonium-210 | .01 | 10 |
Potassium-42 | .01 | 9,000 |
Promethium-145 | .01 | 4,000 |
Promethium-147 | .01 | 4,000 |
Radium-226 | 0.001 | 100 |
Ruthenium-106 | .01 | 200 |
Samarium-151 | .01 | 4,000 |
Scandium-46 | .01 | 3,000 |
Selenium-75 | .01 | 10,000 |
Silver-110m | .01 | 1,000 |
Sodium-22 | .01 | 9,000 |
Sodium-24 | .01 | 10,000 |
Strontium-89 | .01 | 3,000 |
Strontium-90 | .01 | 90 |
Sulfur-35 | .5 | 900 |
Technetium-99 | .01 | 10,000 |
Technetium-99m | .01 | 400,000 |
Tellurium-127m | .01 | 5,000 |
Tellurium-129m | .01 | 5,000 |
Terbium-160 | .01 | 4,000 |
Thulium-170 | .01 | 4,000 |
Tin-113 | .01 | 10,000 |
Tin-123 | .01 | 3,000 |
Tin-126 | .01 | 1,000 |
Titanium-44 | .01 | 100 |
Uranium Hexafluoride | .001 | Note4 |
Vanadium-48 | .01 | 7,000 |
Xenon-133 | 1.0 | 900,000 |
Yttrium-91 | .01 | 2,000 |
Zinc-65 | .01 | 5,000 |
Zirconium-93 | .01 | 400 |
Zirconium-95 | .01 | 5,000 |
Any other beta-gamma emitter | .01 | 10,000 |
Mixed fission products | .01 | 1,000 |
Mixed corrosion products | .01 | 10,000 |
Contaminated equipment beta-gamma | .001 | 10,000 |
Irradiated material, any form other than solid noncombustible | .01 | 1,000 |
Irradiated material, solid noncombustible | .001 | 10,000 |
Mixed radioactive waste, beta-gamma | .01 | 1,000 |
Packaged mixed waste, beta-gamma5 | .001 | 10,000 |
Any other alpha emitter | .001 | 2 |
Contaminated equipment, alpha | .0001 | 20 |
Packaged waste, alpha5 | .0001 | 20 |
Combinations of radioactive materials listed above1 | ||
1 | For combinations of radioactive materials, consideration of the need for an emergency plan is required if the sum of the ratios of the quantity of each radioactive material authorized to the quantity listed for that material in Schedule C exceeds one. |
2 | For Californium-252, the quantity may also be expressed as 20 milligrams. |
3 | Excludes Carbon-14 as carbon dioxide. |
4 | For uranium hexafluoride, the quantity is 50 kilograms in a single container or 1,000 kilograms total. |
5 | Waste packaged in Type B containers does not require an emergency plan. |