RECENT J. (2020), 60:026-033 https://doi.org/10.31926/RECENT.2020.60.026 26 Impact of Repair Costs on Company Performance: Technical-Economic Analysis between Two Locomotive Engines DL07 and DM04 Ahcène AKNI LITE Laboratory, Université Frères Mentouri, Constantine 1, Algeria, akniahcene@yahoo.fr Rachid CHAIB LITE Laboratory, Université Frères Mentouri, Constantine 1, Algeria, rchaib@umc.edu.dz Abdelaziz KAHLOUCHE LITE Laboratory, Université Frères Mentouri, Constantine 1, Algeria, kahloucheaziz@yahoo.fr Ion VERZEA “Gheorghe Asachi” Technical University, Iasi 700050, Romania, ion.verzea@academic.tuiasi.ro Abstract Today, the company operates in a strong competitive environment where financial concerns are very pronounced and the maintenance function is no exception to this rule of cost reduction. Moreover, it is more ethical than legislative to be satisfied with technical and economic performance without taking into account environmental constraints. As a result, globalization has pushed the Algerian industry towards a direct confrontation in terms of operating safety, profitability and competitiveness, while respecting the protection of the environment in the various branches of industry, particularly in rail transport. An important part of this upgrade is the improvement of the RAMS concept and its application at the level of the different industrial structures. The lack of reliable data and efficient data processing tools, as well as maintenance management methods, has long reduced the maintenance function to troubleshooting tasks, resulting in subsequent high costs such as business performance is not obvious. Thus, the maintenance service must be established as a key player in competitiveness to engage in a quality approach, in particular to determine the performance compatible with the possibilities of the equipment (age, operation, etc.), or even its renewal. Our work is based on a technical-economic analysis between two locomotive engines, the DL07 and the DM04, to determine its operating performance, which is subject to strict reliability, availability and safety objectives while using methods specific to field of reliability. Thus, the estimate of the residual time of operation before the failure of a piece of equipment must make it possible to avoid unnecessary maintenance expenses. This study is based on the evaluation of the number of stops of two engines during five years of operation, an analysis of the different repairs of the two engines with respect to their frequencies and their costs, ended by a comparative study between these two engines in terms of reliability indicator and repair costs. Keywords RAMS, maintenance cost, failure, prognosis, rail, quality and operating performance 1. Introduction The complexity of technical systems has led industry and the scientific community to look for new and original solutions that can make these systems more efficient, more competitive and more secure [1]. Today, the company operates in a strong competitive environment where financial concerns are very pronounced and the maintenance function is no exception to this rule of cost reduction. In addition, it is no longer sufficient to be satisfied with technical and economic performance, but it becomes necessary, even mandatory, to take into account environmental constraints. To achieve these objectives, it is not only repair or repair at the lowest cost or repair in the shortest possible time. It is also not keeping the facilities running at all costs or ensuring high operating safety, no matter what, to achieve maximum availability but unprofitable. Thus, throughout the production life, the maintenance monitors the equipment, monitors its degradation and upgrades it with a performance check. At the end of its life, maintenance first proposes a reduction in performance compatible with the possibilities of the equipment and finally its renewal.