http://www.legislation.gov.uk/id/uksi/2019/703/schedule/1/part/2/paragraph/wrapper1n1

SCHEDULE 1

I1PART 2Quantity ratios for more than one radionuclide

Annotations:

Commencement Information

Sch. 1 Pt. 2 in force at 22.5.2019, see reg. 1(1)

For the purpose of regulation 3(4), the quantity ratio for more than one radionuclide is the sum of the quotients of the quantity of a radionuclide present Q_p divided by the quantity of that radionuclide specified in the appropriate column of Part 1 of this Schedule Q_lim, namely—

\sum \frac{Q_{p}}{Q_{\lim}}