Substituição preventiva dos mancais de unidade de bombeio mecânico baseado em análise de dados de vida

Abstract

The maintenance in the industry in general has undergone numerous changes mainly due to the increased number and complexity of physical assets (equipment and facilities), appearance of new maintenance techniques, paradigm shifts on the organization and responsibilities of maintenance. Maintenance is also responding to a growing awareness of how the failure of equipment affects the safety and the environment, as well as greater pressure to achieve high availability of facilities and the growing need for cost reduction. Traditionally, maintenance engineers deal with maintenance problems without seeking to operate in optimized way; For example, many service plans are put into operation with only a small, if any quantitative approach to its definition. In this sense, this work was applied Life Data Quantitative Analysis to establish the reliability function and determine the optimal time for preventive replacement of Crank Pin on Sucker Rod Pumps (equipment used in onshore oil production wells). After comparing the overall costs and probabilities of failure for different periodicities of preventive substitution, it was verified that the periodicity of preventive substitution used today did not correspond to the optimal time of substitution and that this time could be extended, obtaining a considerable reduction of the costs, without compromising the integrity of the equipment.