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The purpose of this article is to analyse the reliability and to observe the evolution of the position of a filling machine for a UHT milk along the bathtub curve. The research method was the quantitative modeling. It was reviewed concepts such as: the industrial maintenance, the relevance of reliability inside the industrial maintenance, the RCM methodology (Reliability Centered Maintenance) and the bathtub curve and its interpretation throughout the life cycle of an equipment, component or subsystem. For this modeling, models of probability distribution for the times between failures were used. The probability tests using Weibull’s model, performed on data collected in the field, showed that the machine approximates to the “wear out” phase in the bathtub curve after about 8,000 hours of service. The study also demonstrated the need to revise the maintenance schedule recommended by the manufacturer in order to extend the maturity phase of the machine.

Análise de confiabilidade e evolução de uma máquina de envase de leite UHT ao longo da curva da banheira