An arbitral tribunal____ :

S. 26. Expert appointed by arbitral tribunal.—(1) Unless otherwise agreed by the parties, the arbitral  tribunal may— (a) appoint one or more experts to report to it on specific issues to be determined by the arbitral  tribunal, and (b) require a party to give the expert any relevant information or to produce, or to provide access  to, any relevant documents, goods or other property for his inspection. (2) Unless otherwise agreed by the parties, if a party so requests or if the arbitral tribunal considers it  necessary, the expert shall, after delivery of his written or oral report, participate in an oral hearing where  the parties have the opportunity to put questions to him and to present expert witnesses in order to testify  on the points at issue. (3) Unless otherwise agreed by the parties, the expert shall, on the request of a party, make available  to that party for examination all documents, goods or other property in the possession of the expert with  which he was provided in order to prepare his report.