le démarrage des travaux prend effet à compter de la date de notification de l' O.D.S de commencement des ravaux par le service contractant au partenaire cocontractant.
the start of work shall take effect from the date of notification of the O.D.S of beginning of the RAI by the service contractor to the contracting partner.
The start of work shall take effect from the date of notification of the O. D. S of commencement of con- nectors by the service contractor to partner counterparty.