Chapter IIIS Composition of Arbitration Tribunal
Article 10S Number of arbitrators
(1)The parties are free to determine the number of arbitrators.
(2)Failing such determination, there shall be a single arbitrator.
Article 11S Appointment of arbitrators
(1)No person shall be precluded by reason of his nationality from acting as an arbitrator, unless otherwise agreed by the parties.
(2)The parties are free to agree on a procedure of appointing the arbitrator or arbitrators, subject to the provisions of paragraphs (4) and (5) of this article.
(3)Failing such agreement,
(a)in an arbitration with three arbitrators, each party shall appoint one arbitrator, and the two arbitrators thus appointed shall appoint the third arbitrator; if a party fails to appoint the arbitrator within thirty days of receipt of a request to do so from the other party, of if the two arbitrators fail to agree on the third arbitrator within thirty days of their appointment, the appointment shall be made, upon request of a party, by the court specified in article 6;
(b)in an arbitration with a single arbitrator, if the parties are unable to agree on the arbitrator, he shall be appointed, upon request of a party, by the court specified in article 6.
(4)Where, under an appointment procedure agreed upon by the parties:
(a)a party fails to act as required under such procedure, or
(b)the parties, or two arbitrators, are unable to reach an agreement expected of them under such procedure, or
(c)a third party, including an institution, fails to perform any function entrusted to it under such procedure,
any party may request the court specified in article 6 to take the necessary measure, unless the agreement on the appointment procedure provides other means for securing the appointment.
(5)A decision on a matter entrusted by paragraph (3) or (4) of this article to the court specified in article 6 shall be subject to no appeal. The court, in appointing an arbitrator, shall have due regard to any qualifications required of the arbitrator by the agreement of the parties and to such considerations as are likely to secure the appointment of an independent and impartial arbitrator and, in the case of a sole or third arbitrator, shall take into account as well the advisability of appointing an arbitrator of a nationality other than those of the parties.
Article 12S Grounds for challenge
(1)When a person is approached in connection with his possible appointment as an arbitrator, he shall disclose any circumstances likely to give rise to justifiable doubts as to his impartiality or independence. An arbitrator, from the time of his appointment and throughout the arbitral proceedings, shall without delay disclose any such circumstances to the parties unless they have already been informed of them by him.
(2)An arbitrator may be challenged only if circumstances exist that give rise to justifiable doubts as to his impartiality or independence, or if he does not possess qualifications agreed to by the parties. A party may challenge an arbitrator appointed by him, or in whose appointment he has participated, only for reasons of which he becomes aware after the appointment has been made.
Article 13S Challenge procedure
(1)The parties are free to agree on a procedure for challenging an arbitrator, subject to the provisions of paragraph (3) of this article.
(2)Failing such agreement, a party who intends to challenge an arbitrator shall, within fifteen days after becoming aware of the constitution of the arbitral tribunal or after becoming aware of any circumstances referred to in article 12(2), send a written statement of the reasons for the challenge to the arbitral tribunal. Unless the challenged arbitrator withdraws from his office or the other party agrees to the challenge, the arbitral tribunal shall decide on the challenge.
(3)If a challenge under any procedure agreed upon by the parties or under the procedure of paragraph (2) of this article is not successful, the challenging party may, within thirty days after having received notice of the decision rejecting the challenge, request the court specified in article 6 to decide on the challenge, which decision shall be subject to no appeal. While such a request is pending, the arbitral tribunal, including the challenged arbitrator, may continue the arbitral proceedings and make an award.
Article 14S Failure or impossibility to act
(1)If an arbitrator becomes de jure or de facto unable to perform his functions or for other reasons fails to act without undue delay, his mandate terminates if he withdraws from his office or if the parties agree on the termination. Otherwise, if a controversy remains concerning any of these grounds, any party may request the court specified in article 6 to decide on the termination of the mandate, which decision shall be subject to no appeal.
(2)If, under this article or article 13(2), an arbitrator withdraws from his office or a party agrees to the termination of the mandate of an arbitrator, this does not imply acceptance of the validity of any ground referred to in this article or article 12(2).
Article 15S Appointment of substitute arbitrator
Where the mandate of an arbitrator terminates under article 13 or 14 or because of his withdrawal from office for any other reason or because of the revocation of his mandate by agreement of the parties or in any other case of termination of his mandate, a substitute arbitrator shall be appointed according to the rules that were applicable to the appointment of the arbitrator being replaced.