Política de manutenção de meios navais: Conceitos de manutenção centrada a confiabilidade aplicados às Fragatas Classe Niterói

Abstract

The objective of this work is to analyze the concep ts of reliability - based maintenance and present a management model of Reliability Centered Maintenance (RMC) that can be applied to the maintenance of the Niterói Class Frigates (FCN) in order to increase its reliability and availability. The choice of the FCN is due to the fact that they are one of the main ships of the Brazilian Naval Power. Its SMP, already well - established and based on preventive maintenance, established the maintenance parameters in MB, from the 1970s. The construction of the FCN was a divisive milestone in the maintenance policy of the MB marine media, with the two major improvements in the maintenance policy: Training of SMP and use of preventive maintenance based on operating time. The SMP, used as a rational method of planning, exec ution and control of maintenance, has, among others, to increase the reliability and availability of the maintenance costs. The FCN maintenance policy has not undergone significant changes over time. It is the intent of MB to revitalize and extend the life of FCN for another 15 years. In this way, it is necessary to study ways to improve the maintenance of the systems of these ships, maintaining their reliability and availability. Among the tools that can be applied in maintenance in order to increase avail ability and reliability, besides reducing the costs involved, the RMC is presented, which is the application of a structured method to establish the best maintenance strategy for a given system or equipment. Although the MCC is a method characterized by it s application in the design of the system or equipment, its use in installations already in the operation phase was implemented in the USN, initially as a pilot project and later with the creation of the RMC Backfit. The opportunity to implement maintenanc e based on condition arises as a maintenance policy for MB. In this way, the management suggestion of a RMC Backfit pilot project for use in the FCN is presented, taking into account the current administrative structure of maintenance of MB. The management of RMC Backfit by DGePM, coordinating the performance of other maintenance organizations b ecomes the target for a pilot project. The current administrative structure of MB maintenance is sufficient for data collection; d efinition and analysis of parameter s; p erforming predictive, preventive or corrective maintenance tasks; s upply of necessary spare parts; o ptimization of SMP routines; a nd scheduling maintenance periods. The implementation of a pilot project using the RMC Backfit in the maintenance of the F CN, using a management model based on the current MB maintenance administrative structure, will contribute to the evaluation of the use of predictive maintenance routines in naval environments. This will contribute to a change in the maintenance policy of MB, aiming for greater availability and reliability in ships and reducing maintenance costs.