2022 2023 TFE ELM Jospin MUNIKISA Bin Muyumba

The document already contains an explicit summary section titled “RESUME”. Here it is, lightly cleaned up and kept faithful to the original meaning: Time is an important factor both in industry and in everyday life, and it is particularly critical in companies from the standpoint of production. Kamoto Copper Company (KCC) produces copper and cobalt; however, failures and unscheduled machine stoppages greatly affect production, since repairs can take a significant number of hours. During our end-of-study internship at KCC, we were eyewitnesses to numerous shutdowns of the screw feeders of the cobalt hydroxide dryers at Luilu, which are crucial pieces of equipment in the cobalt production chain and therefore represent a loss of revenue for the company. This motivated us to study and analyze these failures in order to identify the main reasons for the often prolonged downtime, while determining the reliability of these units with a view to proposing improvement recommendations. We therefore sought to answer the following questions: Why do these stoppages occur? What is the breakdown of downtime by type of failure? What are the reliability and availability levels of our screw feeders?