Ergonomic analysis in the manual transport of loads: a case study in a cement production company

Abstract

This study aims to analyze the manual transport activity of 50kg bags in a cement production company by means of ergonomic work analysis (EWA), identifying environmental factors and loaders’ working conditions. In order for EWA to take place, photographic records, videos and interviews were performed. It covered aspects related to lifting, transportation and handling of cement bags, as well as observations of loaders’ posture while performing the activity. In this sense, both qualitative and quantitative aspects were taken into account, which were evidenced by the use of instruments for determining the concentration of agents in the environment. In addition, some management tools, such as the cause and effect diagram, and interviews conducted during the field research were used. It was found that the high rate of absenteeism in the activity is related to the strict control of productivity, the excessive lifting and manual transport of weights, and repetitive trunk flexion movements. The results shown by the EWA made it possible to propose preventive measures and some changes in the work environment.

Keywords

• Ergonomic work analysis (EWA).
• Manual loading
• Manual transport of loads
• Cement producer company