ResumoO presente estudo teve por objetivo verificar qual tipo de manutenção é o mais indicado aos equipamentos bombas de polpa de uma usina de beneficiamento de minério de ferro. Este é um estudo de caso de natureza documental, exploratória e explicativa. No desenvolvimento desse estudo foi realizada a análise dos indicadores de disponibilidade física (DF), horas em operação, número de falhas, tempo médio entre falhas (MTBF), tempo gastos para reparo (MTTR) e custo das bombas de polpas com manutenções corretivas e preventivas. Foram coletados dados referentes ao período de janeiro a setembro de 2016. Após análise dos dados, a pesquisa identificou que as manutenções corretivas apresentaram melhores índices de DF e MTTR, e quanto às manutenções preventivas, atingiram melhores resultados em horas em operação, número de falhas, MTBF e custo. Por fim concluiu-se que manutenção preventiva, no geral, mostrou-se viável, pois apresentou melhor desempenho na maioria dos indicadores analisados. Palavras-chave: Manutenção Preventiva. Manutenção Corretiva. Bombas de Polpa. COMPARISON OF MAINTENANCE INDICATORS: A CASE STUDY CARRIED OUT ON PULP PUMPS AbstractThe present study had as objective to verify which type of maintenance is most appropriate to the equipment pulp pumps of an iron mineral beneficiation. This is a case study of documentary nature, exploratory and explanatory. In the development of this study, the analysis of the physical availability indicators (DF), hours in operation, number of failures, average time between failures (MTBF), time spent to repair (MTTR) and cost of pulp pumps with corrective maintenance were performed. Preventive measures. Data were collected from January to September of 2016. After analysis, the research identified that corrective maintenance had better DF and MTTR, indexes and preventive maintenance achieved better results in hours in operation, number of failures, MTBF And cost. Finally it was concluded that preventive maintenance, in general, proved feasible, since it presented better performance in most of the indicators analyzed.
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