3. Work with ionising radiation only meets the requirements of paragraph 2(a) if—N.I.
(a)in relation to an employee, the effective dose caused by such work does not exceed 1 mSv in a calendar year; and
(b)in relation to any other person, the following requirements are met in all circumstances where it is reasonably practicable to do so—
(i)the effective dose caused by such work from radionuclides which are not naturally occurring radionuclides does not exceed 10 µSv in a calendar year; and
(ii)the effective dose caused by such work from naturally occurring radionuclides does not exceed 1 mSv in a calendar year.