Aplicação das ferramentas da qualidade para investigação e análise das possíveis causas das altas divergências nos desvios de estoque de minério.

Abstract

This study addresses the use of quality tools for the investigation of possible causes that result in the high divergence of deviations between physical and accounting stock of a specific product in a mining company. Accuracy in inventory management is of great importance, among other reasons, for the control of costs involved in the process, as well as in the reliability of pointing out information and disclosing the results of organizations. The case study was developed by applying quality tools such as the control chart to identify the problem, brainstorming and Ishikawa, in the investigation of possible causes, and prioritization of those that possibly most impact the process, through the prioritization matrix, as well as implementation of the action plan to mitigate the problem, structured by the 5W1H methodology, in addition to the application of the PDCA methodology. An analysis of the results was performed, through the control chart, to verify the effectiveness of the actions implemented. It was observed that in the first months the deviations were controlled, however, they still returned to position outside the limit. Finally, a new analysis of variables not yet considered, was carried out, in a quantitative way, proposing the continuation of the study in order to achieve even more satisfactory results regarding the reduction of divergences in the production process addressed.