Aplicação da manutenção centrada na confiabilidade no sistema hidráulico de descarregador de vagões

Abstract

This work aims to propose a set of maintenance techniques defined from the application of the Reliability Centered Maintenance (RCM) methodology in the hydraulic system of a car dumper in a mining company. In this study, a survey of the equipment's operational data was carried out, both in the system and in the field, and after that, the inherent risks were determined as consequences of failures, classification of the entire system to obvious and hidden failures, as well as reliability analysis through risk measures and trust, in addition to the presentation of the equipment with its constructive form and operational context. As a result, a schematic model for application of maintenance tasks was proposed, covering the entire hydraulic system of these equipments and elaborating analysis of components and causes of failures. As a conclusion, the absence of effective maintenance plans to balance risk, cost and availability of a management and system for operational events data was verified. Additionally verified an average gain of 54% in relation to the number of failures, with the participation of actions in this work.