Análisis de criticidad de equipos para el mejoramiento del sistema de gestión del mantenimiento en la empresa de aluminios CEDAL.

Abstract

This research, conducted at the CEDAL aluminum enterprise, aimed at analyzing the equipment criticality to improve its maintenance management system. The methodology was based on risk analysis quantitative and the Norsok Z-008, ISO-14224, EN-16646 and ISO-31000 standards. It consisted of six phases: physical asset selection, operational context diagnosis, criteria selection to be applied, criticality calculation using failure rate and economic consequences, equipment classification according to the Pareto analysis and maintenance strategies for each zone of the matrix. Having applied this methodology to 27 items of the extrusion process, a very high criticality level in the extrusion cooling table of 1130.97 USD/h, with a failure rate probability of 92.88 % and MTBF (Mean time between failures) of 63.59 h, therefore, the root cause analysis, method of problem solving used to diminish the occurrence of failure- was determined for this zone. We conclude that analyzing the equipment criticality increases the process reliability in 23.16% and guides the maintenances resources. We recommend to implement this methodology in all the production processes.