68Contamination of premises by radioactivity

68 Contamination of premises by radioactivity

68 Contamination of premises by radioactivity

(1) For the Act, section 21(4), the following levels of radioactivity are prescribed—

(a) for premises where one radionuclide is causing the radioactivity—100 times the exempt activity specified for the radionuclide in the Safety Standards, Table I.1,

(b) for premises where a mixture of two or more radionuclides are causing the radioactivity—the sum of the activity ratios of the radionuclides is 100.

(2) In this section—

activity ratio, of a radionuclide, is the actual activity for the radionuclide divided by the exempt activity specified for the radionuclide in the Safety Standards, Table I.1.

Safety Standards means the Radiation Protection and Safety of Radiation Sources: International Basic Safety Standards, General Safety Requirements Part 3, published by the International Atomic Energy Agency, as in force from time to time.