Article 3 Conditions attaching to exemption under article 2
The conditions mentioned in Article 2 are that—
(a)
except when removed for cleaning, maintenance, testing or inspection, the luminescent paint or film in or on any Class A article on the premises shall be kept covered by glass or some other protective covering;
(b)
the aggregate number of becquerels of activity of a radionuclide mentioned in column 1 of the Schedule hereto in all the Class B articles on the premises at any time does not exceed the relevant number mentioned in column 3; and
(c)
except when removed for testing, inspection or incorporation as a component of another article, every Class B article on the premises is kept in a container clearly, legibly and indelibly marked with the words “radioactive luminous component”.