Use of Adjustable Table in the Palletizing Station for the Prevention of Osteomyoarticular Disorders in the MIL POLIMEROS Factory.

Abstract

Introduction. Workers who are dedicated to the manufacture of PVC compounds, perform product mixing, packaging, standing for most of the working day, and even lifting loads, which has caused the appearance of musculoskeletal injuries, especially lumbar. Objective. Redesign the palletizing workstation for the prevention of osteomyoarticular disorders with the help of an adjustable worktable. Methodology. It began by detecting osteomyoarticular involvement in workers using the Nordic Questionnaire. With that information and to complete the study, the coplanar static biomechanical calculation method (BIO-MEC) was used to identify the improvement when using an adjustable table at the position of. Results. From the application of the Nordic questionnaire, it was observed that 27% of the workers present musculoskeletal problems in the neck, 45% in the shoulder and 82% in the lumbar area. Of the total jobs, 55% of the workers have musculoskeletal problems, of which the male sex is the most affected. After the application of an adjustable work table, angles of: 159 ° for knee, 170 ° hip, 85 ° for L5 / S1, 40 ° for shoulder, 160 ° for elbow and 90 ° wrist were achieved and with the collation of a mirror worker in the palletizing workstation and by reducing 50% of the weight in the maximum load for the worker, the maximum loads supported of: elbow, shoulder, knee, lumbar ankle and hip were reduced to the recommended limits. Conclusion. By implementing an adjustable work table in the palletizing station, the ergonomic risk level was reduced by 80%