Target: Musculoskeletal discomforts account for a major part of occupational diseases in the workplace, preventing the occurrence of these discomforts requires evaluating and correcting work situations using ergonomic job analysis methods. The purpose of this study is to investigate the cause of the prevalence of musculoskeletal disorders in blast furnace workers and to implement corrective measures to reduce the prevalence of these disorders. analysis method: In this study, evaluation was done on 24 workers of blast furnace unit by census method, the medical documents of these people were checked and the Nordic questionnaire was completed by them. The task of drilling and oxygen work was evaluated by the Rapid Whole Body Assessment (REBA) method, and the workers were given the necessary training. In the task of oxygen work for all 24 people, the work station was redesigned and the drilling operation was mechanized. And the task of workers with musculoskeletal disorders was changed. Re-evaluation was done by REBA method and Nordic questionnaire. findings: According to the results of the medical files and the Nordic questionnaire, about 37.5% of the workers had musculoskeletal disorders; The final REBA score was 11 for drilling task and 10 for oxygenation. After re-designing the workstation, the final REBA score for the oxygen work task was 5, and by mechanizing the drilling operation, the drilling task was eliminated. With the implementation of corrective measures, the amount of musculoskeletal disorders decreased by 17.5%.
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