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Appendix K

Appendix K

Exemption quantities of Radioactive Prescribed Substances

Exemption Quantities are the amounts, which if exceed come under the control of the Nuclear Safety and Control Act. This quantity is also used to define various regulator criteria.

Isotope Quantity in Bq Isotope Quantity in Bq
Americium 241 1 X 103 Iodine 123 1 X 107
Americium 243 1 X 103 Iodine 125 1 X 106
Antimony 124 1 X 104 Iodine 129 1 X 106
Antimony 125 1 X 105 Iodine 131 1 X 104
Arsenic 73 1 X 105 Iridium 192 1 X 104
Arsenic 74 1 X 104 Iron 52 1 X 104
Arsenic 76 1 X 104 Iron 55 1 X 106
Barium 131 1 X 105 Iron 59 1 X 105
Barium 133 1 X 105 Krypton 77 1 X 1010
Barium 140 1 X 104 Krypton 85 1 X 1011
Beryllium 7 1 X 106 Krypton 87 1 X 1010
Bismuth 206 1 X 105 Lead 210 1 X 104
Bismuth 207 1 X 105 Magnesium 28 1 X 104
Bismuth 210 1 X 104 Manganese 52 1 X 105
Bromine 82 1 X 105 Manganese 54 1 X 105
Cadmium 107 1 X 107 Mercury 203 1 X 105
Cadmium 109 1 X 106 Molybdenum 99 1 X 104
Cadmium 113m 1 X 104 Nickel 59 1 X 108
Cadmium 115 1 X 104 Nickel 63 1 X 107
Cadmium 115m 1 X 104 Niobium 95 1 X 105
Calcium 45 1 X 106 Nitrogen 13 1 X 105
Calcium 47 1 X 104 Oxygen 15 1 X 106
Carbon 11 1 X 105 Phosphorous 32 1 X 104
Carbon 14 1 X 108 Phosphorous 33 1 X 106
Cerium 139 1 X 106 Polonium 210 1 X 104
Cerium 141 1 X 106 Potassium 42 1 X 104
Cerium 144 1 X 105 Promethium 147 1 X 107
Cesium 134 1 X 105 Radium 226 1 X 104
Cesium 134m 1 X 107 Rubidium 86 1 X 104
Cesium 137 1 X 104 Samarium 153 1 X 104
Chlorine 36 1 X 104 Scandium 46 1 X 105
Chlorine 38 1 X 104 Scandium 47 1 X 105
Chromium 49 1 X 105 Selenium 75 1 X 105
Chromium 51 1 X 106 Selenium 79 1 X 107
Cobalt 56 1 X 105 Sodium 22 1 X 104
Cobalt 57 1 X 105 Sodium 24 1 X 104
Cobalt 58 1 X 105 Strontium 85 1 X 105
Cobalt 58m 1 X 107 Strontium 87m 1 X 105
Cobalt 60 1 X 105 Strontium 89 1 X 104
Copper 60 1 X 105 Strontium 90 1 X 104
Copper 64 1 X 105 Sulphur 35 1 X 108
Cooper 67 1 X 105 Technetium 99 1 X 106
Dysprosium 159 1 X 106 Technetium 99m 1 X 107
Erbium 169 1 X 106 Thallium 201 1 X 106
Erbium 171 1 X 104 Thallium 204 1 X 104
Fluorine 18 1 X 104 Thorium 232 1 X 102
Gadolinium 153 1 X 104 Tin 113 1 X 105
Gallium 67 1 X 106 Uranium (natural) in dispersible form 1 X 104
Gallium 68 1 X 104 Uranium (natural) in non-dispersible form 1 X 107
Germanium 68 1 X 104 Xenon 123 1 X 1011
Gold 195 1 X 105 Xenon 129m 1 X 1011
Gold 198 1 X 104 Xenon 133 1 X 1011
Hydrogen 3 1 X 109 Xenon 135 1 X 1010
Indium 111 1 X 105 Yttrium 90 1 X 104
Indium 113m 1 X 105 Zinc 65 1 X 106
Indium 115 1 X 105 Zirconium 95 1 X 105