High activity radioactive sources

A high activity radioactive source means a radioactive source mentioned in the table below with an activity level measured in Becquerel that is equal to or more than that specified.

The following table is reproduced from Schedule 7A of the Customs (Prohibited Exports) Regulations 1958.

Item Radioactive source Activity level (Bq)
1 Americium-241 6 × 1011
2 Americium-241/Beryllium 6 × 1011
3 Caesium-137 1 × 1012
4 Californium-252 2 × 1011
5 Cobalt-60 3 × 1011
6 Curium-244 5 × 1011
7 Gadolinium-153 1 × 1013
8 Iridium-192 8 × 1011
9 Plutonium-238 6 × 1011
10 Plutonium-239/Beryllium 6 × 1011
11 Promethium-147 4 × 1014
12 Radium-226 4 × 1011
13 Selenium-75 2 × 1012
14 Strontium-90/Yttrium-90 1 × 1013
15 Thulium-170 2 × 1014
16 Ytterbium-169 3 × 1012

For more information on the determination of a high activity radioactive source, see Regulatory requirements for export of high activity radioactive sources.