NSWIn ForceRegulation
Protection from Harmful Radiation Regulation 2025
68Contamination of premises by radioactivity
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#### 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—
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> > > (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,
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> > > (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.
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> > (2) In this section—
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> > 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.
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> > 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.