Under Section 15(2) of the Arbitration and Conciliation Act, 1996, in a situation where the mandate of an arbitrator terminates, a substitute arbitrator is required to be appointed according to the rules that were applicable to the appointment of the arbitrator who is replaced. In Yashwith Constructions (P) Ltd. v. Simplex Concrete Piles India Ltd., (2006) 6 SCC 204, the term “rules” appearing in Section 15(2) of the Act has been understood to be referring to the provisions for appointment contained in the arbitration agreement or any rules of any institution under which the disputes are to be referred to arbitration.
The Hon’ble Apex Court in Government of Haryana v. G.F. Toll Road Pvt. Ltd., (2019) 3 SCC 505, it was held as under:
“The High Court while considering the appointment under Section 15 failed to take note of the provisions of Section 15(2) of the Arbitration and Conciliation Act. Section 15(2) provides that a substitute arbitrator must be appointed according to the rules that are applicable for the appointment of the arbitrator being replaced. This would imply that the appointment of a substitute arbitrator must be according to the same procedure adopted in the original agreement at the initial stage. Deepak Goel v. Avinash Chandra, 2020 (4) AWC 3720 (LB).