Correction by the arbitrator
151. The arbitrator may, on his or her own initiative or on the application of a party or ACAS:
(i)correct the award so as to remove any clerical or computational mistake, or error arising from an accidental slip or omission, or to clarify or remove any ambiguity in the award, or
(ii)make an additional award in respect of any part of the claim which was presented to the arbitrator but was not dealt with in the award.