Lionel Chapas has extensive experience in procurement and maintenance, currently serving as Responsable Achats at Groupe Vicat since August 2000. In this role, Lionel oversees the management of spare parts procurement, service provision, supplier panel management, and reporting, while ensuring the performance of purchasing in production sites. Previously, Lionel held the position of Responsable Maintenance in the Armée de l'air from November 1984 to July 2000, where responsibilities included managing specialized workshops, establishing maintenance plans, implementing ISO 9000 certification, and developing competencies in hydraulics, pneumatics, automation, and mechanics. Earlier experience includes work as a Mécanicien atelier, specializing in welding and metalworking. Lionel Chapas graduated from the Ecole des apprentis mécaniciens de l'Armée de l'Air with a Brevet supérieur de mécanique atelier, specializing in chaudronnerie and welding.