Análisis de confiabilidad, disponibilidad y mantenibilidad de motores Waukesha en la planta de generación gas-diésel de la Empresa Repsol Ecuador.

Abstract

A maintenance study based on reliability, availability and maintainability was carried out to reduce the corrective maintenances of internal combustion engines WAUKESHA at REPSOL DEL ECUADOR enterprise. The maintenance data of 7 generators WAUKESHA from 2014 to 2015 were gotten and classified according to the amount of failures that have occurred and to the systems that have failed such as combustible, electrical, cooling, piping, ignition and lubrication systems. These failures have caused that oil production plant does not have energy, that means if a generator stops working, it stops producing energy, due to a failure originated in some of the generator systems. Therefore, the time that the oil extraction process is stopped, it will depend on the time used to repair the system failures. The registered failure data let us to know exactly which generator must be checked frequently. Later, it is determined the times of each generator failure giving as a result that ignition system failed in all the generators and combustible system affected only the generator A. The most critical mean time was for the generator D with 64.7 hours between failures. Availability, maintainability and reliability existing between WAUKESHA engines were established with the mean time between failures. It is determined that doing maintenance based on the regulation MIL-STD-2173 reduces failure occurrences and the use of diesel when energy is generated since maintenance is carried out based on the quantitative parameters referring to availability, reliability and maintainability. From this analysis, the current maintenance has reached 99.05% of availability, however 99.86% has been reached by applying the present maintenance plan.