The arbitral tribunal is constituted when the arbitrator or arbitrators have accepted the assignment entrusted to them. On that date, the dispute is referred to it.
It is the arbitrator’s responsibility, before accepting his assignment, to disclose any circumstances likely to affect his independence or impartiality. He is also obliged to disclose without delay any circumstances of the same nature that may arise after acceptance of his assignment.
In the event of a dispute over the retention of the arbitrator, the difficulty shall be settled by the person responsible for organising the arbitration or, failing this, decided by the supporting judge, referred to within one month of the disclosure or discovery of the disputed fact.