Schedule 23, Part 6, paragraph 25A

The Table 4A referred to in Sections 2, 5 and 6 of this Part is— The summation rule in respect of columns 2 and 5 of Table 4A is the sum of the quotients A/B where— “A” means the concentration of each radionuclide listed in column 1 of Table 4A that is present in the substance or article; and “B” means the concentration of that radionuclide specified in column 2 or 5 (as appropriate) of Table 4A. The summation rule in respect of columns 3 and 4 of Table 4A is the sum of the quotients C/D where— “C” means the quantity of each radionuclide listed in column 1 of Table 4A that is present in the substance or article; and “D” means the quantity of that radionuclide specified in column 3 or 4 (as appropriate) of Table 4A.

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Source: legislation.gov.uk · retrieved 2026-07-30