Ergonomic Analysis in the Stamping Industry in Manufacturing and Comparison of Results with Nordic Questionnaire

Abstract

This study was carried out in a manufacturing industry, more precisely in the sector of stamping with two distinct processes. The objective was to analyze the risk of musculoskeletal injury since the activity demands repetitive movements, loading of pieces and use of force. For the ergonomic analysis, the cycle time, and the number of movements per cycle was measured, an analysis of the workstation and machinery, postural assessment and risks with OWAS, RULA, OCRA and NIOSH methods was performed. The Nordic Questionnaire was also applied to 100% of the workers, and the results were compared with those from the ergonomic analysis methods. It was possible to verify that the results are high-risk, especially due to repetitive activity and the manipulated weight. The Nordic Questionnaire ratified the result of the RULA method, regarding the regions of the body more harmed by the task. These methods are complementary and indicate the reason for the severity of the activity. It is important to improve the work conditions, including more pauses to rest and adopted machines to reduce inappropriate postural movements.