Title: A functional central limit theorem for interacting particle systems on transitive graphs Authors: P. Doukhan, S/ Lang, S. Louhichi, and B. Ycart Abstract: A finite range interacting particle system on a transitive graph is considered. Assuming that the dynamics and the initial measure are invariant, the normalized empirical distribution process converges in distribution to a centered diffusion process. As an application, a central limit theorem for certain hitting times, interpreted as failure times of a coherent system in reliability, is derived. R\'esum\'e : On cinsid\`ere un syst\`eme de particules interactives de port\'ee finie sur un graphe transitif. En supposant que la dynamique et la mesure initiale sont invariantes, on montre que la distribution empirique normalis\'ee, converge en loi vers un processus de diffusion centr\'e. Comme application, on d\'emontre un th\'eor\`eme central limite pour des temps d'atteinte, interpr\'et\'es comme instants de panne d'un syst\`eme coh\'erent en fiabilit\'e. Key words: Interacting particle system, functional central limit theorem, hitting time. AMS Subject Classification: 60K35, 60F17