A party who knows that-
(a) any provision of this Part from which the parties may derogate, or
(b) any requirement under the arbitration agreement, has not been complied with and yet proceeds with the arbitration without stating his objection to such non-compliance without undue delay or, if a time limit is provided for stating that objection, within that period of time, shall be deemed to have waived his right to so object.
Arbitration and Conciliation Act 1996
Section 2 of Arbitration Act - Definitions
Section 3 of Arbitration Act - Receipt of written communications
Section 4 of Arbitration Act - Waiver of right to object
Section 5 of Arbitration Act - Extent of judicial intervention
Section 6 of Arbitration Act - Administrative assistance
Section 7 of Arbitration Act - Arbitration agreement
Section 9 of Arbitration Act - Interim measures, etc., by Court
Section 10 of Arbitration Act - Number of arbitrators