धारा 58

If an arbitrator fails or refuses to act or if circumstances stand in the way of the arbitrator acting, any party may, in accordance with sub-section (2), apply to the arbitral tribunal to appoint a substitute arbitrator. The arbitral tribunal shall, within thirty days from the date of the application, appoint a substitute arbitrator. Where the arbitral tribunal is unable to act, any party may, in accordance with sub-section (2), apply to the Chief Justice or any other person authorized by him to appoint a substitute arbitral tribunal. The Chief Justice or the other person so authorized shall, within thirty days from the date of the application, appoint a substitute arbitral tribunal.