(1) In the absence of agreement between the parties regarding the number of arbitrators and the method of their appointment, the Tri- bunal shall consist ofthree arbitrators,one arbitrator appointed by each party and the third, who shall be the President of the Tribunal, appointed by agreement of the parties,all in accordance with
(2) Upon the dispatch ofthe notice ofregistration ofthe request for arbitration,the parties shall promptly proceed to constitute a Tribunal.
(3) The Tribunal shall consist of a sole arbitrator or any uneven number of arbitrators appointed as the parties shall agree.
(4) If the Tribunal shall not have been constituted within 90 days after the notice of registration of the request for arbitration has been dispatched by the Secretary-General,or such other period as the parties may agree, the Chairman of the Administrative Council (hereinafter called the “Chairman”) shall, at the request in writing of either party transmitted through the Secretary-General, appoint the arbitrator or arbitrators not yet appointed and, unless the President shall already have been designated or is to be designated later,designate an arbitra- tor to be President of the Tribunal.
(5) Except as the parties shall otherwise agree,no person who had previously acted as a conciliator or arbitrator in any proceeding for the settlement ofthe dispute or as a member ofany fact-finding committee relating thereto may be appointed as a member of the Tribunal.