Review of safety case
23.—(1) A duty holder shall thoroughly review a current safety case—
(a)no more than five years after the date on which the safety case was first accepted by the competent authority under regulation 17 or 18; and
(b)at suitable intervals not exceeding five years following the first review mentioned in sub-paragraph (a).
(2) In addition to the thorough review under paragraph (1), a duty holder shall thoroughly review the current safety case if directed to do so by the competent authority.
(3) The duty holder shall send a summary, including the results, of each such review to the competent authority—
(a)where the review is conducted at the direction of the competent authority, within the period specified by the competent authority in that direction; or
(b)in all other cases, within 28 days of its conclusion.
(4) The period specified by the competent authority for the purposes of paragraph (3)(a) shall be a period of at least 28 days starting on the date of the direction.