(a) Within 30 days after receipt of the award, a party may, by notice to the Tribunal, with a copy to the Center and the other party, request the Tribunal to correct in the award any clerical, typographical or computational errors. If the Tribunal considers the request to be justified, it shall make the correction within 30 days after receipt of the request. Any correction, which shall take the form of a separate memorandum, signed by the Tribunal in accordance with Article 64(d), shall become part of the award.
(b) The Tribunal may correct any error of the type referred to in paragraph (a) on its own initiative within 30 days after the date of the award.
(c) A party may, within 30 days after receipt of the award, by notice to the Tribunal, with a copy to the Center and the other party, request the Tribunal to make an additional award as to claims presented in the arbitral proceedings but not dealt with in the award. Before deciding on the request, the Tribunal shall give the parties an opportunity to be heard. If the Tribunal considers the request to be justified, it shall, wherever reasonably possible, make the additional award within 60 days of receipt of the request.