The Ionising Radiations Regulations 1999

1.  Work with ionising radiation shall not be required to be notified in accordance with regulation 6 when the only such work being carried out is in one or more of the following categories—

(a) where the concentration of activity per unit mass of a radioactive substance does not exceed the concentration specified in column 2 of Part I of Schedule 8;

(b) where the quantity of radioactive substance involved does not exceed the quantity specified in column 3 of Part I of Schedule 8;

(c) where apparatus contains radioactive substances in a quantity exceeding the values specified in sub-paragraphs (a) and (b) above provided that—

(i) the apparatus is of a type approved by the Executive;

(ii) the apparatus is constructed in the form of a sealed source;

(iii) the apparatus does not under normal operating conditions cause a dose rate of more than 1μSvh⁻¹ at a distance of 0.1m from any accessible surface; and

(iv) conditions for the disposal of the apparatus have been specified by the appropriate Agency;

(d) the operation of any electrical apparatus to which these Regulations apply other than apparatus referred to in sub-paragraph (e) below provided that—

(i) the apparatus is of a type approved by the Executive; and

(ii) the apparatus does not under normal operating conditions cause a dose rate of more than 1μSvh⁻¹ at a distance of 0.1m from any accessible surface;

(e) the operation of—

(i) any cathode ray tube intended for the display of visual images; or

(ii) any other electrical apparatus operating at a potential difference not exceeding 30kV,

provided that the operation of the tube or apparatus does not under normal operating conditions cause a dose rate of more than 1μSvh⁻¹ at a distance of 0.1m from any accessible surface;

(f) where the work involves material contaminated with radioactive substances resulting from authorised releases which the appropriate Agency has declared not to be subject to further control.