(2) The Secretary-General shall promptly seek an acceptance from each arbitrator appointed under these Rules.

(3) If an arbitrator fails to accept his appointment within 15 days, the Secretary-General shall promptly notify the parties. Unless the parties agree otherwise, the appointment of another arbitrator shall then proceed in accordance with the method followed for the previous appointment.

Article 13

Replacement of Arbitrators Prior to Constitution of the Tribunal

At any time before the Tribunal is constituted, each party may replace any arbitrator appointed by it and the parties may by common consent agree to replace any arbitrator.