Schedule 3—Activity ratios for sealed
sources—prescribed
radionuclide values
Column 1 Prescribed radionuclide |
Column 2 Value specified for the prescribed radionuclide — D-value Activity Level (GBq) |
---|---|
Americium-241 |
60 |
Americium-241/Beryllium |
60 |
Cadmium-109 |
2 × 10 4 |
Caesium-137 |
100 |
Californium-252 |
20 |
Cobalt-57 |
700 |
Cobalt-60 |
30 |
Curium-244 |
50 |
Gadolinium-153 |
1 × 10 3 |
Germanium-68 |
700 |
Gold-198 |
200 |
Iodine-125 |
200 |
Iodine-131 |
200 |
Iridium-192 |
80 |
Iron-55 |
8 × 10 5 |
Krypton-85 |
3 × 10 4 |
Molybdenum-99 |
300 |
Nickel-63 |
6 × 10 4 |
Palladium-103 |
9 × 10 4 |
Phosphorus-32 |
1 × 10 4 |
Plutonium-238 |
60 |
Plutonium-239/Beryllium |
60 |
Polonium-210 |
60 |
Promethium-147 |
4 × 10 4 |
Radium-226 |
40 |
Ruthenium-106 (Rhodium-106) |
300 |
Selenium-75 |
200 |
Strontium-90 (Yttrium-90) |
1 × 10 3 |
Technetium-99m |
700 |
Thallium-204 |
2 × 10 4 |
Thulium-170 |
2 × 10 4 |
Tritium (H-3) |
2 × 10 6 |
Ytterbium-169 |
300 |