Section 9: Challenge procedure.

(1) The parties may determine the procedure to be followed in challenging an arbitrator.
(2) Where no procedure is determined under subsection (1) of this section, a party who intends to challenge an arbitrator shall, within fifteen days of becoming aware of the constitution of the arbitral tribunal or becoming aware of any circumstances referred to in section 8 of this Act, send to the arbitral tribunal a written statement of the reasons for the challenge.
(3) Unless the arbitrator who has been challenged withdraws from office or the other party agrees to the challenge, the arbitral tribunal shall decide on the challenge.