Indicadores da manutenção dos equipamentos de carga e transporte em mina a céu aberto

Abstract

Properly developed mine planning has an important share in maintaining the profitability of an open pit mine, from this point it can be seen that loading and hauling equipment is typically used in mining operations and thats why they take the credit to reach the target production. Each equipment has its purpose, which determines its availability and cost savings and determines its preventive and corrective maintenance, outage scheduling, outage identification, life time. This case study was conducted in a small mining company that produces agricultural limestone in the region of Caçapava do Sul / RS. Its main objectives are to obtain key performance index (KPIs) of load and hauling equipment and for failures, mechanical availability and utilisation. It also measures the impact of downtime for unscheduled maintenance on equipments, and an estimate of maintenance cost. The optimal values of the performance indicators were monitored according to the bibliographic analyzes. In this work, a spreadsheet was developed for completion by equipment operators, including information relevant to the construction of a database. With the treatment of these data were indicated the utilization rates, mechanical availability, downtime control, amount of maintenance, maintenance costs and optimized utilization values were quantified. With an analysis of the results, it was possible to indicate the auxiliary aspects and auxiliary measures in relation to the load and hauling maintenance and programs of a open pit mine.