3.—(1) In exercising relevant functions in relation to a radioactive substances activity, the regulator must comply with sub-paragraph (2) where a high-activity or similar source is, or will be, kept, used, disposed of or accumulated on any premises.
(2) The regulator—
(a)must be satisfied that there are in place measures concerning site security, including the security measures in sub-paragraph (3), as are appropriate to the source and premises in question;
(b)where it considers it appropriate to do so, must consult the police, security services or other appropriate persons on site security;
(c)must have regard to any advice given by them, if it is issued within such time as the regulator believes is reasonable before it exercises a relevant function; and
(d)must impose appropriate environmental permit conditions concerning site security.
(3) The security measures referred to in sub-paragraph (2)(a) are—
(a)measures to ensure the physical security of the premises, including the installation of alarm and detection systems, and the retaining of documentary evidence of those measures;
(b)measures, which are evidenced in writing—
(i)to prevent unauthorised access to, or loss or theft of, a high-activity or similar source;
(ii)to detect such matters; and
(iii)to review and enhance the physical security of the premises in response to any increased risk of unauthorised access, loss or theft;
(c)written procedures to ensure that before a person is authorised to have access to a high-activity or similar source—
(i)that person has passed checks to verify their identity, and
(ii)satisfactory written references have been obtained which confirm, as far as reasonably practicable, that there is no information to indicate that the person presents any security risk to the sources; and
(d)measures to keep secure, and prevent unauthorised access to, information relating to—
(i)a high-activity or similar source, and
(ii)the measures referred to in paragraphs (a), (b) and (c).