Minn. R. agency 144, ch. 4731, DOMESTIC LICENSING OF RADIOACTIVE MATERIALS, pt. 4731.3150
Current through Register Vol. 49, No. 29, 2025
This part specifies quantities of radioactive materials requiring consideration of the need for an emergency plan for responding to a release.
| Radioactive material1 | Release fraction | Quantity (curies) |
| Actinium-228 | 0.001 | 4,000 |
| Americium-241 | 0.001 | 2 |
| Americium-242 | 0.001 | 2 |
| Americium-243 | 0.001 | 2 |
| Antimony-124 | 0.01 | 4,000 |
| Antimony-126 | 0.01 | 6,000 |
| Barium-133 | 0.01 | 10,000 |
| Barium-140 | 0.01 | 30,000 |
| Bismuth-207 | 0.01 | 5,000 |
| Bismuth-210 | 0.01 | 600 |
| Cadmium-109 | 0.01 | 1,000 |
| Cadmium-113 | 0.01 | 80 |
| Calcium-45 | 0.01 | 20,000 |
| Californium-252 | 0.001 | 9 (20 mg) |
| Carbon-14 (noncarbon dioxide) | 0.01 | 50,000 |
| Cerium-141 | 0.01 | 10,000 |
| Cerium-144 | 0.01 | 300 |
| Cesium-134 | 0.01 | 2,000 |
| Cesium-137 | 0.01 | 3,000 |
| Chlorine-36 | 0.5 | 100 |
| Chromium-51 | 0.01 | 300,000 |
| Cobalt-60 | 0.001 | 5,000 |
| Copper-64 | 0.01 | 200,000 |
| Curium-242 | 0.001 | 60 |
| Curium-243 | 0.001 | 3 |
| Curium-244 | 0.001 | 4 |
| Curium-245 | 0.001 | 2 |
| Europium-152 | 0.01 | 500 |
| Europium-154 | 0.01 | 400 |
| Europium-155 | 0.01 | 3,000 |
| Germanium-68 | 0.01 | 2,000 |
| Gadolinium-153 | 0.01 | 5,000 |
| Gold-198 | 0.01 | 30,000 |
| Hafnium-172 | 0.01 | 400 |
| Hafnium-181 | 0.01 | 7,000 |
| Holmium-166m | 0.01 | 100 |
| Hydrogen-3 | 0.5 | 20,000 |
| Iodine-125 | 0.5 | 1 |
| Iodine-131 | 0.5 | 10 |
| Indium-114m | 0.01 | 1,000 |
| Iridium-192 | 0.001 | 40,000 |
| Iron-55 | 0.01 | 40,000 |
| Iron-59 | 0.01 | 7,000 |
| Krypton-85 | 1.0 | 6,000,000 |
| Lead-210 | 0.01 | 8 |
| Manganese-56 | 0.01 | 60,000 |
| Mercury-203 | 0.01 | 10,000 |
| Molybdenum-99 | 0.01 | 30,000 |
| Neptunium-237 | 0.001 | 2 |
| Nickel-63 | 0.01 | 20,000 |
| Niobium-94 | 0.01 | 300 |
| Phosphorus-32 | 0.5 | 100 |
| Phosphorus-33 | 0.5 | 1,000 |
| Polonium-210 | 0.01 | 10 |
| Potassium-42 | 0.01 | 9,000 |
| Promethium-145 | 0.01 | 4,000 |
| Promethium-147 | 0.01 | 4,000 |
| Radium-226 | 0.001 | 100 |
| Ruthenium-106 | 0.01 | 200 |
| Samarium-151 | 0.01 | 4,000 |
| Scandium-46 | 0.01 | 3,000 |
| Selenium-75 | 0.01 | 10,000 |
| Silver-110m | 0.01 | 1,000 |
| Sodium-22 | 0.01 | 9,000 |
| Sodium-24 | 0.01 | 10,000 |
| Strontium-89 | 0.01 | 3,000 |
| Strontium-90 | 0.01 | 90 |
| Sulfur-35 | 0.5 | 900 |
| Technetium-99 | 0.01 | 10,000 |
| Technetium-99m | 0.01 | 400,000 |
| Tellurium-127m | 0.01 | 5,000 |
| Tellurium-129m | 0.01 | 5,000 |
| Terbium-160 | 0.01 | 4,000 |
| Thulium-170 | 0.01 | 4,000 |
| Tin-113 | 0.01 | 10,000 |
| Tin-123 | 0.01 | 3,000 |
| Tin-126 | 0.01 | 1,000 |
| Titanium-44 | 0.01 | 100 |
| Vanadium-48 | 0.01 | 7,000 |
| Xenon-133 | 1.0 | 900,000 |
| Yttrium-91 | 0.01 | 2,000 |
| Zinc-65 | 0.01 | 5,000 |
| Zirconium-93 | 0.01 | 400 |
| Zirconium-95 | 0.01 | 5,000 |
| Any other beta-gamma emitter | 0.01 | 10,000 |
| Mixed fission products | 0.01 | 1,000 |
| Mixed corrosion products | 0.01 | 10,000 |
| Contaminated equipment, beta-gamma | 0.001 | 10,000 |
| Irradiated material, any form other than solid noncombustible | 0.01 | 1,000 |
| Irradiated material, solid noncombustible | 0.001 | 10,000 |
| Mixed radioactive waste, beta-gamma | 0.01 | 1,000 |
| Packaged mixed waste, beta-gamma2 | 0.001 | 10,000 |
| Any other alpha emitter | 0.001 | 2 |
| Contaminated equipment, alpha | 0.0001 | 20 |
| Packaged waste, alpha2 | 0.0001 | 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 this part exceeds one.
2 Waste packaged in Type B containers does not require an emergency plan.
Minn. R. agency 144, ch. 4731, DOMESTIC LICENSING OF RADIOACTIVE MATERIALS, pt. 4731.3150
Statutory Authority: MS s 144.1202; 144.1203