13.—(1) Where an assessment made in accordance with regulation 8 shows that a radiation accident is reasonably foreseeable (having regard to the steps taken by the employer under paragraph (3) of that regulation), the employer shall prepare a contingency plan designed to secure, so far as is reasonably practicable, the restriction of exposure to ionising radiation and the health and safety of persons who may be affected by such accident.
(2) An employer shall ensure that—
(a)where local rules are required for the purposes of regulation 18, a copy of the contingency plan made in pursuance of paragraph (1) is identified in those rules and incorporated into them by way of summary or reference;
(b)any employee under the employer's control who may be involved with or affected by arrangements in the plan has been given suitable and sufficient instructions and where appropriate issued with suitable dosemeters or other devices;
(c)where appropriate, rehearsals of the arrangements in the plan are carried out at suitable intervals; and
(d)if circumstances arise where it is necessary for some or all of the arrangements in the plan to be carried out—
(i)the cause of those circumstances is analysed to determine, so far as is reasonably practicable, the measures, if any, required to prevent a recurrence of such circumstances;
(ii)a record of such analysis is made and kept for at least 2 years from the date on which it was made; and
(iii)any exposure which occurs due to the above circumstances is noted on any relevant dose record.