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Protection from Harmful Radiation Regulation 2025
6Definition of “radioactive substance”
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#### 6 Definition of “radioactive substance”
6 Definition of “radioactive substance”
> For the Act, section 4(1), definition of radioactive substance—
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> > (a) the prescribed amount is 100 Bq per gram, and
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> > (b) the prescribed activity of a radioactive element is set out in Schedule 1, table, and
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> > (c) a substance has the prescribed activity if the expression—
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> > %20AND%20(No%3D0461)%20AND%20(Year%3D2025)%20AND%20(%22Historical%20Document%22%3D0))/g2.gif)
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> >
> > where—
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> > A1 represents the total activity, in kBq, of the Group 1 radionuclides contained in the substance.
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> > A2 represents the total activity, in kBq, of the Group 2 radionuclides contained in the substance.
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> > A3 represents the total activity, in kBq, of the Group 3 radionuclides contained in the substance.
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> > A4 represents the total activity, in kBq, of the Group 4 radionuclides contained in the substance.