the contract is concluded in the form of a framework agreement with successive issuance of purchase orders.Purchase orders will only be issued during the period of validity of the framework agreement.Purchase orders are written documents addressed to the holder of the framework agreement, which specify those of the services, described in the framework agreement, the execution of which is requested and determine the quantity.Their duration of execution will be fixed in accordance with the usual conditions for the performance of the services covered by the framework agreement.Services falling within the scope of emergency relief and intervention, will be the subject of an order form for regularization after the intervention

the contract is concluded in the form of a framework agreement with successive issuance of purchase orders.Purchase orders will only be issued during the period of validity of the framework agreement.Purchase orders are written documents addressed to the holder of the framework agreement, which specify those of the services, described in the framework agreement, the execution of which is requested and determine the quantity.Their duration of execution will be fixed in accordance with the usual conditions for the performance of the services covered by the framework agreement.Services falling within the scope of emergency relief and intervention, will be the subject of an order form for regularization after the intervention