The parties are free to agree on the powers of the tribunal to correct an award or make an additional award.
If or to the extent there is no such agreement, the following provisions apply.
Any application for the exercise of those powers must be made within 28 days of the date of the award or such longer period as the parties may agree.
Any correction of an award shall be made within 28 days of the date the application was received by the tribunal or, where the correction is made by the tribunal on its own initiative, within 28 days of the date of the award or, in either case, such longer period as the parties may agree.
Any additional award shall be made within 56 days of the date of the original award or such longer period as the parties may agree.
Any correction of an award shall form part of the award.