18.—(1) For the purposes of enabling work with ionising radiation to be carried on in accordance with the requirements of these Regulations, every employer engaged in work with ionising radiation shall, in respect of any controlled area or, where appropriate having regard to the nature of the work carried out there, any supervised area, make and set down in writing such local rules as are appropriate to the radiation risk and the nature of the operations undertaken in that area.
(2) Local rules shall identify the main working instructions intended to restrict any exposure in that controlled or supervised area.
(3) An employer shall take all reasonable steps to ensure that any local rules which are relevant to the work being carried out are observed.
(4) An employer shall ensure that any relevant local rules are brought to the attention of those employees and other persons who may be affected by them.
(5) An employer shall—
(a)appoint one or more suitable radiation protection supervisors for the purpose of securing compliance with these Regulations in respect of work carried out in any area made subject to local rules;
(b)set down in the local rules the names of such radiation protection supervisors; and
(c)provide the means necessary for such radiation protection supervisors to perform their role.