(1) Within 45 days after the date of the award either party, with notice to the other party may request the Tribunal,through the Secre- tary-General,to decide any question which it had omitted to decide in the award.

(2) The Tribunal shall determine the procedure to be followed.

(3) The decision ofthe Tribunal shall become part ofthe award and the provisions ofArticles 52 and 53 of these Rules shall apply thereto.