(1) Within 30 days after receiving a proposal for a variation of a safety case, or part of a safety case, the Safety Authority must—
(a) notify the operator, in writing, that the Safety Authority has decided—
(i) to accept the proposal; or
(ii) to reject the proposal; or
(iii) to do both of the following—
(A) accept the proposal for one or more specified stages in the life of the facility, but not for every stage in the life of the facility, in respect of which the proposal was submitted;
(B) reject the rest of the proposal; or
(iv) to accept the proposal subject to conditions or limitations; or
(b) notify the operator, in writing, that the Safety Authority is unable to make a decision about the proposal within the period of 30 days, and set out a proposed timetable for its consideration of the proposal.
(2) A failure by the Safety Authority to comply with subregulation (1) in relation to a proposal for variation of a safety case, or a proposal for a variation of a part of a safety case, does not affect the validity of a decision by the Safety Authority to accept or reject the proposal.
(3) A notice of a decision under subregulation (1)(a) must include the terms of the decision (including any limitations or conditions) and the reasons for it.