Plano de manutenção baseado em risco para máquinas de uma indústria de rochas ornamentais: um estudo de caso

Abstract

In the current scenario of the ornamental stone industry, the availability and reliability of production equipment are determining factors for the competitiveness of organizations. Ornamental stone companies located in the interior of Ceará present a reality marked by the predominance of corrective maintenance practices, which generates production delays, additional costs, and a reduction in the useful life of assets. Therefore, this Final Course Project aims to develop and propose a risk-based maintenance (RBM) plan for the main equipment used in the company's production line, in order to contribute to the improvement of productive performance and efficient asset management of the organization as a whole. The research was developed as a case study, involving data collection on assets, interviews with operators, and analysis of the most recurrent failures, in order to construct a criticality matrix. From this analysis, preventive, scheduled corrective, and predictive maintenance actions were suggested, compatible with the company's technical and financial resources. Furthermore, key performance indicators (KPIs) were indicated that the organization can use to monitor the effectiveness of the plan, such as MTBF (Mean Time Between Failures), MTTR (Mean Time to Repair), and technical availability index. The results obtained show that the application of the RBM methodology allows for a more efficient prioritization of critical assets, promoting significant gains in operational reliability, reducing the occurrence of unplanned failures, and improving the use of available productive resources. It is observed that the structuring of the maintenance plan directly contributes to increasing the predictability of the production process and to making more assertive decisions in the context of maintenance management. Thus, the study demonstrates, in a practical way, that

the adoption of a risk-based approach is viable and effective even in small and medium- sized enterprises, reinforcing maintenance as a strategic element for improving industrial

performance and for the operational sustainability of the organization.