19.—(1) The adjudicator shall reach his decision not later than—
(a)twenty eight days after the date of the referral notice mentioned in paragraph 7(1), or
(b)forty two days after the date of the referral notice if the referring party so consents, or
(c)such period exceeding twenty eight days after the referral notice as the parties to the dispute may, after the giving of that notice, agree.
(2) Where the adjudicator fails, for any reason, to reach his decision in accordance with paragraph (1)
(a)any of the parties to the dispute may serve a fresh notice under paragraph 1 and shall request an adjudicator to act in accordance with paragraphs 2 to 7; and
(b)if requested by the new adjudicator and insofar as it is reasonably practicable, the parties shall supply him with copies of all documents which they had made available to the previous adjudicator.
(3) As soon as possible after he has reached a decision, the adjudicator shall deliver a copy of that decision to each of the parties to the contract.