[Regulations 5, 16, 30, 31 and 32]
Exempt quantities of radioactive substances
Item |
Radioactive substance |
Maximum quantity (megabecquerels) |
---|---|---|
1 |
Americium 241
........................................................................... |
0.0004 |
2 |
Antimony 122
............................................................................. |
4.0 |
3 |
Antimony 124
............................................................................. |
0.4 |
4 |
Antimony 125
............................................................................. |
0.4 |
5 |
Arsenic 73
..................................................................................
|
4.0 |
6 |
Arsenic 74
..................................................................................
|
0.4 |
7 |
Arsenic 76
..................................................................................
|
0.4 |
8 |
Arsenic 77
..................................................................................
|
4.0 |
9 |
Barium 131
.................................................................................
|
0.4 |
10 |
Barium 133
.................................................................................
|
0.4 |
11 |
Barium 140
.................................................................................
|
0.4 |
12 |
Bismuth 210
...............................................................................
|
0.04 |
13 |
Bromine 82
.................................................................................
|
0.4 |
14 |
Cadmium 109
............................................................................. |
0.4 |
15 |
Cadmium 115m
.......................................................................... |
0.4 |
16 |
Cadmium 115
............................................................................. |
4.0 |
17 |
Caesium 131
...............................................................................
|
40.0 |
18 |
Caesium 134m
............................................................................ |
4.0 |
19 |
Caesium 134
...............................................................................
|
0.04 |
20 |
Caesium 135
...............................................................................
|
0.4 |
21 |
Caesium 136
...............................................................................
|
0.4 |
22 |
Caesium 137
...............................................................................
|
0.4 |
23 |
Calcium 45
.................................................................................
|
0.4 |
24 |
Calcium 47
.................................................................................
|
0.4 |
25 |
Carbon 14
...................................................................................
|
4.0 |
26 |
Cerium 141
.................................................................................
|
4.0 |
27 |
Cerium 143
.................................................................................
|
4.0 |
28 |
Cerium 144
.................................................................................
|
0.04 |
29 |
Chlorine 36
.................................................................................
|
0.4 |
30 |
Chlorine 38
.................................................................................
|
0.4 |
31 |
Chromium 51
............................................................................. |
40.0 |
32 |
Cobalt 58m
.................................................................................
|
0.4 |
33 |
Cobalt 58
....................................................................................
|
0.4 |
34 |
Cobalt 60
....................................................................................
|
0.04 |
35 |
Copper 64
...................................................................................
|
4.0 |
36 |
Dysprosium 165
......................................................................... |
0.4 |
37 |
Dysprosium 166
......................................................................... |
4.0 |
38 |
Erbium 169
.................................................................................
|
4.0 |
39 |
Erbium 171
.................................................................................
|
4.0 |
40 |
Europium 152(9.2h)
................................................................... |
4.0 |
41 |
Europium 152(13 yr.)
................................................................. |
0.04 |
42 |
Europium 154
............................................................................. |
0.04 |
43 |
Europium 155
............................................................................. |
0.4 |
44 |
Fluorine 18
.................................................................................
|
40.0 |
45 |
Gadolinium 153
.......................................................................... |
0.4 |
46 |
Gadolinium 159
.......................................................................... |
4.0 |
47 |
Gallium 72
..................................................................................
|
0.4 |
48 |
Germanium 71
............................................................................ |
4.0 |
49 |
Gold 198
.....................................................................................
|
4.0 |
50 |
Gold 199
.....................................................................................
|
4.0 |
51 |
Hafnium 181
...............................................................................
|
0.4 |
52 |
Holmium 166
............................................................................. |
4.0 |
53 |
Hydrogen 3
.................................................................................
|
40.0 |
54 |
Indium 113m
..............................................................................
|
4.0 |
55 |
Indium 114m
............................................................................. |
0.4 |
56 |
Indium 115m
............................................................................. |
4.0 |
57 |
Indium 115
.................................................................................
|
0.4 |
58 |
Iodine 125
...................................................................................
|
0.04 |
59 |
Iodine 126
...................................................................................
|
0.04 |
60 |
Iodine 129
...................................................................................
|
0.004 |
61 |
Iodine 131
...................................................................................
|
0.04 |
62 |
Iodine 132
...................................................................................
|
0.4 |
63 |
Iodine 133
...................................................................................
|
0.04 |
64 |
Iodine 134
...................................................................................
|
0.4 |
65 |
Iodine 135
...................................................................................
|
0.4 |
66 |
Iridium 192
.................................................................................
|
0.4 |
67 |
Iridium 194
.................................................................................
|
4.0 |
68 |
Iron 55
........................................................................................
|
4.0 |
69 |
Iron 59
........................................................................................
|
0.4 |
70 |
Krypton 85
.................................................................................
|
4.0 |
71 |
Krypton 87
.................................................................................
|
0.4 |
72 |
Lanthanum 140
.......................................................................... |
0.4 |
73 |
Lutetium 177
..............................................................................
|
4.0 |
74 |
Manganese 52
............................................................................. |
0.4 |
75 |
Manganese 54
............................................................................. |
0.4 |
76 |
Manganese 56
............................................................................. |
0.4 |
77 |
Mercury 197m
............................................................................ |
4.0 |
78 |
Mercury 197
...............................................................................
|
4.0 |
79 |
Mercury 203
...............................................................................
|
0.4 |
80 |
Molybdenum 99
......................................................................... |
4.0 |
81 |
Neodymium 147
......................................................................... |
4.0 |
82 |
Neodymium 149
......................................................................... |
4.0 |
83 |
Nickel 59
....................................................................................
|
4.0 |
84 |
Nickel 63
....................................................................................
|
0.4 |
85 |
Nickel 65
....................................................................................
|
4.0 |
86 |
Niobium 93m
............................................................................. |
0.4 |
87 |
Niobium 95
.................................................................................
|
0.4 |
88 |
Niobium 97
.................................................................................
|
0.4 |
89 |
Osmium 185
...............................................................................
|
0.4 |
90 |
Osmium 191m
............................................................................ |
4.0 |
91 |
Osmium 191
...............................................................................
|
4.0 |
92 |
Osmium 193
...............................................................................
|
4.0 |
93 |
Palladium 103
............................................................................. |
4.0 |
94 |
Palladium 109
............................................................................. |
4.0 |
95 |
Phosphorus 32
............................................................................ |
0.4 |
96 |
Platinum 191
..............................................................................
|
4.0 |
97 |
Platinum 193m
........................................................................... |
4.0 |
98 |
Platinum 193
..............................................................................
|
4.0 |
99 |
Platinum 197m
........................................................................... |
4.0 |
100 |
Platinum 197
..............................................................................
|
4.0 |
101 |
Plutonium 239
............................................................................ |
0.0004 |
102 |
Polonium 210
............................................................................. |
0.004 |
103 |
Potassium 42
..............................................................................
|
0.4 |
104 |
Praseodymium 142
..................................................................... |
4.0 |
105 |
Praseodymium 143
..................................................................... |
4.0 |
106 |
Promethium 147
......................................................................... |
0.4 |
107 |
Promethium 149
......................................................................... |
0.4 |
108 |
Radium 226
................................................................................
|
0.0004 |
109 |
Rhenium 186
..............................................................................
|
4.0 |
110 |
Rhenium 188
..............................................................................
|
4.0 |
111 |
Rhodium 103m
........................................................................... |
4.0 |
112 |
Rhodium 105
..............................................................................
|
4.0 |
113 |
Rubidium 86
...............................................................................
|
0.4 |
114 |
Rubidium 87
...............................................................................
|
0.4 |
115 |
Ruthenium 97
............................................................................. |
4.0 |
116 |
Ruthenium 103
........................................................................... |
0.4 |
117 |
Ruthenium 105
........................................................................... |
0.4 |
118 |
Ruthenium 106
........................................................................... |
0.04 |
119 |
Samarium 151
............................................................................ |
0.4 |
120 |
Samarium 153
............................................................................ |
4.0 |
121 |
Scandium 46
...............................................................................
|
0.4 |
122 |
Scandium 47
...............................................................................
|
4.0 |
123 |
Scandium 48
...............................................................................
|
0.4 |
124 |
Selenium 75
................................................................................
|
0.4 |
125 |
Silicon 31
...................................................................................
|
4.0 |
126 |
Silver 105
...................................................................................
|
0.4 |
127 |
Silver 110m
................................................................................
|
0.04 |
128 |
Silver 111
...................................................................................
|
4.0 |
129 |
Sodium 22
..................................................................................
|
0.4 |
130 |
Sodium 24
..................................................................................
|
0.4 |
131 |
Strontium 85
...............................................................................
|
0.4 |
132 |
Strontium 89
...............................................................................
|
0.04 |
133 |
Strontium 90
...............................................................................
|
0.004 |
134 |
Strontium 91
...............................................................................
|
0.4 |
135 |
Strontium 92
...............................................................................
|
0.4 |
136 |
Sulphur 35
..................................................................................
|
4.0 |
137 |
Tantalum 182
............................................................................. |
0.4 |
138 |
Technetium 96
............................................................................ |
0.4 |
139 |
Technetium 97m
......................................................................... |
4.0 |
140 |
Technetium 97
............................................................................ |
4.0 |
141 |
Technetium 99m
......................................................................... |
4.0 |
142 |
Technetium 99
............................................................................ |
0.4 |
143 |
Tellurium 125m
.......................................................................... |
0.4 |
144 |
Tellurium 127m
.......................................................................... |
0.4 |
145 |
Tellurium 127
............................................................................. |
4.0 |
146 |
Tellurium 129m
.......................................................................... |
0.4 |
147 |
Tellurium 129
............................................................................. |
4.0 |
148 |
Tellurium 131m
.......................................................................... |
0.4 |
149 |
Tellurium 132
............................................................................. |
0.4 |
150 |
Terbium 160
...............................................................................
|
0.4 |
151 |
Thallium 200
..............................................................................
|
4.0 |
152 |
Thallium 201
..............................................................................
|
4.0 |
153 |
Thallium 202
..............................................................................
|
4.0 |
154 |
Thallium 204
..............................................................................
|
0.4 |
155 |
Thorium (natural) 1
...................................................................... |
4.0 |
156 |
Thulium 170
...............................................................................
|
0.4 |
157 |
Thulium 171
...............................................................................
|
0.4 |
158 |
Tin 113
.......................................................................................
|
0.4 |
159 |
Tin 125
.......................................................................................
|
0.4 |
160 |
Tungsten 181
..............................................................................
|
0.4 |
161 |
Tungsten 185
..............................................................................
|
0.4 |
162 |
Tungsten 187
..............................................................................
|
4.0 |
163 |
Uranium (natural) 2
...................................................................... |
4.0 |
164 |
Uranium 233
...............................................................................
|
0.0004 |
165 |
Uranium 235
...............................................................................
|
0.0004 |
166 |
Vanadium 48
...............................................................................
|
0.4 |
167 |
Xenon 131m
................................................................................
|
40.0 |
168 |
Xenon
133....................................................................................
|
4.0 |
169 |
Xenon 135
...................................................................................
|
4.0 |
170 |
Ytterbium 175
............................................................................. |
4.0 |
171 |
Yttrium 90
...................................................................................
|
0.4 |
172 |
Yttrium 91
...................................................................................
|
0.4 |
173 |
Yttrium 92
...................................................................................
|
4.0 |
174 |
Yttrium 93
...................................................................................
|
4.0 |
175 |
Zinc 65
........................................................................................
|
0.4 |
176 |
Zinc 69m
.....................................................................................
|
4.0 |
177 |
Zinc 69
........................................................................................
|
40.0 |
178 |
Zirconium
93................................................................................
|
0.4 |
179 |
Zirconium 95
................................................................................
|
0.4 |
180 |
Zirconium
97.................................................................................
|
0.4 |
|
Any alpha emitting radionuclide not listed above or mixtures of alpha emitters
of unknown composition ....................................... |
|
|
Any radionuclide other than alpha emitting radionuclides, not listed above or
mixtures of beta emitters of unknown composition |
|
(See notes at end of this Schedule and Appendix thereto)
1 Based on alpha disintegration rate of
Th‑232, Th‑230 and their daughter products. |
NOTE: For purposes of regulations 5(1)(b) and
32(3), where there is involved a combination of isotopes in known amounts, the
limit for the combination should be derived as follows: Determine, for each
isotope in the combination, the ratio between the quantity present in the
combination and the limit otherwise established for the specific isotope when
not in combination. The sum of such ratios for all the isotopes in the
combination may not exceed “1” (i.e. “unity”). Example
: for purposes of regulation 5(1)(b), if a particular combination
contains 1 megabecquerel of Au‑198 and 2 megabecquerels of C‑14,
it may also include not more than 0.01 megabecquerel of I‑131. This
limit was determined as follows:
= 0.25 + 0.5 + 0.25 = 1
[Schedule V amended: Gazette 22 Jul 1997
p. 3824.]