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HOW CONTINUOUS IMPROVEMENT METHODOLOGY – LEAN SIX SIGMA CAN INCREASE THE PRODUCTIVITY OF LOADING AND HAULING EQUIPMENT

Coutinho HL;
Pereira BI;
Pinto RJL;
de Lima HM;
Costa LV

Heitor Lobo Coutinho

Bruno Inácio Pereira

Rodrigo José Lopes Pinto

Hernani Mota de Lima

Leandro de Vilhena Costa


Keywords

Lean Seis Sigma
Mineração
Produtividade
Infraestrutura
Melhoria contínua
Lean Six Sigma
Mining
Productivity
Infrastructure
Continuous improvement

Abstract

The objective of this work is to increase the productivity of truck and excavator fleets using Lean Six Sigma methodology in the mine production process. The application of the Lean Six Sigma methodology has proven to be highly effective in several areas, for improving processes through the use of statistical tools for problem identification, cause analysis, optimization actions, resolution, sustainability and improvement of results, thus being a powerful methodology for companies seeking operational excellence and greater competitiveness. The fleet of excavators and trucks are the main equipment for material handling and production in the mine, in which through a case study it is possible to evidence the use of statistical tools in the development and identification of problems that affect productivity. In this case study, it is possible to demonstrate the application of all stages of the Lean Six Sigma methodology – DMAIC (Define, measure, analyse, improve, control), as a result of this project, it was possible to increase the overall productivity of the trucks of about 21% and an increase in the effective productivity of the excavators of around 31%, thus generating relevant financial gains estimated at R$ 4,502,141 per year and non-financial gains with improved safety conditions,  well-being of employees and reduction of carbon emissions by saving hours operated and diesel. The gain from reducing carbon emissions is estimated at 3,056 tons of carbon per year. In addition to the project's gains, the development of a culture of continuous improvement can be observed.

DOI: https://doi.org/10.56238/sevened2024.037-141


Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Copyright (c) 2024 Heitor Lobo Coutinho, Bruno Inácio Pereira, Rodrigo José Lopes Pinto, Hernani Mota de Lima, Leandro de Vilhena Costa

Author(s)

  • Heitor Lobo Coutinho
  • Bruno Inácio Pereira
  • Rodrigo José Lopes Pinto
  • Hernani Mota de Lima
  • Leandro de Vilhena Costa