R. C. Lahoti ( 1 ) THIS is a petition under Section 20 of the Arbitration Act seeking appointment of an Arbitrator. ( 2 ) IN April/may, 1986, the petitioner had entered into a contract with the respondents for "sanitary, water supply and drainage work for 300 Type III Quarters at Vasant Vihar, New Delhi". The contract has concluded. Disputes have been raised by the petitioner which are sought to be REFERRED TO for adjudication by arbitration. ( 3 ) THE existence and validity of arbitration contract incorporated in Clause 25 of the contract is not disputed. ( 4 ) THE only ground on which the prayer for appointment of Arbitrator has been resisted on behalf of the respondents is by reference to that part of Clause 25 of the contract which provides for demand for arbitration being raised by the contractor in writing within 90 days of receiving the information from the Government that the bill was ready for payment, failing which demand, the claim of the 315 Contract would be deemed to have been waived and become barred absolutely. ( 5 ) LEARNED Counsel for the petitioner has placed reliances on the decisions of the Supreme Court in Union of India and Anr. v. M/s. LX. Ahuja and Co. , AIR 1988 SC 1172 , Major (Retd.)lndersinghrekhiv. Delhi Development Authority, AIR 1988 SC 1007 and a Full Bench decision of this Court in Ved Parkash Mittal v. The Union of India and Ors. AIR 1984 Delhi 325; which has approved an earlier Division Bench decision of this Court. The view taken in all these decisions is that whether the claim of the contractor has gone barred for failure to raise the same within the prescribed period of time lies within the jurisdiction of the Arbitrator and can be left to be determined by the Arbitrator. The law so laid down has not been seriously disputed by the learned Counsel for the respondents. ( 6 ) FOR the foregoing reasons, the petition is allowed. Consistently with Clause 25 of the Contract, the respondents are directed to appoint an Arbitrator within a period of six weeks from the date of communication of this order. Petition stands disposed of. IA 2689/91 The interim order dated 22nd March, 1991 shall remain in operation till the conclusion of the proceedings in arbitration. IA disposed of. Petition allowed.