At the request of any party or on its own initiative, the administrator may appoint nationals of a country other than that of any of the parties.

5.       Unless the parties have agreed otherwise no later than 45 days after the commencement of the arbitration, if the notice of arbitration names two or more claimants or two or more respondents, the administrator shall appoint all the arbitrators.

Impartiality and Independence of Arbitrators

Article 7

1.       Arbitrators acting under these rules shall be impartial and independent.  Prior to accepting appointment, a prospective arbitrator shall disclose to the administrator any circumstance likely to give rise to justifiable doubts as to the arbitrator’s impartiality or independence.  If, at any stage during the arbitration, new circumstances arise that may give rise to such doubts, an arbitrator shall promptly disclose such circumstances to the parties and to the administrator. Upon receipt of such information from an arbitrator or a party, the administrator shall communicate it to the other parties and to the tribunal.