Installation for producing containers from blanks made of plastics material, which comprises: - a unit for forming containers from blanks, which comprises: • a main conveyor defining a forming path; • a plurality of forming stations borne by the main conveyor and each including a mould with the imprint of a container; • a main drive means coupled to the main conveyor for moving the forming stations along the forming path; - a unit for prior treatment of the blanks, which comprises: • a secondary conveyor defining a treatment path; • a plurality of members for gripping the blanks, borne by the secondary conveyor; - an auxiliary device for transferring the blanks from the treatment unit to the forming unit, which comprises: • an auxiliary conveyor defining a transfer path tangential to the treatment path at a transfer point, and to the forming path at a loading point; • a plurality of members for gripping the blanks, borne by the auxiliary conveyor; - a control unit controlling the main drive means; - the unit for treatment of the blanks comprises a secondary drive means coupled to the secondary conveyor, independent of the main drive means and controlled by the control unit; - the auxiliary transfer device comprises an auxiliary drive means coupled to the auxiliary conveyor, independent of the main drive means and controlled by the control unit; - the control unit is programmed to: as long as no fault is detected at least in the forming unit, synchronize the auxiliary drive means with the main drive means, and the secondary drive means with the auxiliary drive means; - this installation being characterized in that the control unit is also programmed to: as soon as a fault is detected in the forming unit: (A. 1) interrupt the supply of blanks to the treatment unit; (A. 2) command the desynchronization of the auxiliary drive means from the main drive means; (A. 3) command the stopping of the main drive means. - a unit for forming containers from blanks, which comprises: • a main conveyor defining a forming path; • a plurality of forming stations borne by the main conveyor and each including a mould with the imprint of a container; • a main drive means coupled to the main conveyor for moving the forming stations along the forming path; • a main conveyor defining a forming path; • a plurality of forming stations borne by the main conveyor and each including a mould with the imprint of a container; • a main drive means coupled to the main conveyor for moving the forming stations along the forming path; - a unit for prior treatment of the blanks, which comprises: • a secondary conveyor defining a treatment path; • a plurality of members for gripping the blanks, borne by the secondary conveyor; • a secondary conveyor defining a treatment path; • a plurality of members for gripping the blanks, borne by the secondary conveyor; - an auxiliary device for transferring the blanks from the treatment unit to the forming unit, which comprises: • an auxiliary conveyor defining a transfer path tangential to the treatment path at a transfer point, and to the forming path at a loading point; • a plurality of members for gripping the blanks, borne by the auxiliary conveyor; • an auxiliary conveyor defining a transfer path tangential to the treatment path at a transfer point, and to the forming path at a loading point; • a plurality of members for gripping the blanks, borne by the auxiliary conveyor; - a control unit controlling the main drive means; - the unit for treatment of the blanks comprises a secondary drive means coupled to the secondary conveyor, independent of the main drive means and controlled by the control unit; - the auxiliary transfer device comprises an auxiliary drive means coupled to the auxiliary conveyor, independent of the main drive means and controlled by the control unit; - the control unit is programmed to: as long as no fault is detected at least in the forming unit, synchronize the auxiliary drive means with the main drive means, and the secondary drive means with the auxiliary drive means; - this installation being characterized in that the control unit is also programmed to: as soon as a fault is detected in the forming unit: (A. 1) interrupt the supply of blanks to the treatment unit; (A. 2) command the desynchronization of the auxiliary drive means from the main drive means; (A. 3) command the stopping of the main drive means. (A. 1) interrupt the supply of blanks to the treatment unit; (A. 2) command the desynchronization of the auxiliary drive means from the main drive means; (A. 3) command the stopping of the main drive means.