The maintenance management is important to ensure the constant improvement of equipment performance, ensuring quality operating within safe conditions for people and the environment (Jiang, 2015). According to Rausand and Hoyland (2004), with respect to a repairable system, the goal of maintenance is to restore it when necessary, but mainly to seek the improvement of the system reliability. Thus, the reliability analysis of a system provides information about its failure process, assisting in the comprehension of system operation and what to expect from its performance to better adjust the maintenance planning (Barringer, 2004). Birolini (2004) points out that reliability analysis is interrelated with cost and system effectiveness. It gives important indicators for the decision making in the maintenance management in order to attain the best possible usefulness of equipment and systems, as higher reliability in general leads to a lower operating cost.