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OCRA 를 사용한 자동차산업의 근골격계질환 유해요인 평가 연구
이관석,정민수,김재형,전성재,천영지 대한인간공학회 2007 대한인간공학회 학술대회논문집 Vol.- No.-
Due to the high occurrence rate of musculoskeletal disorders (MSDs), many Korean companies adopted various assessment tools to evaluate workers’ musculoskeletal stress to identify works which need to be improved in auto manufacturing industry. Although many adverse working conditions and awkward postures have decreased through continuous improvement after such evaluations, workers who were exposed to repetitive activities and short recovery periods showed the lower job satisfaction level than other workers. Thus in this study, OCRA (The Occupational Repetitive Action tool) was used to check whether RULA evaluates workers’ musculoskeletal stress reasonably well since OCRA has been known to be a good evaluation tool for repetitive works and works with short recovery periods. The evaluation was conducted on 142 works and it was found that 65 works showed higher action levels by OCRA than by RULA. However, 13 works showed the reversed result and 52 works showed the same level regardless of the evaluation tool. Thus it is suggested that OCRA needs to be used with RULA together for the evaluations of musculoskeletal stress at workplaces where repetitive activities and short recovery periods exist.
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자동차 산업에서의 OCRA Checklist와 RULA 평가 비교
이관석(Kwan Suk Lee),김재형(Jae Hyoung Kim),정민수(Min Soo Jung),전성재(Jung Seong Jae),천영지(Young Ji Chun) 대한인간공학회 2007 大韓人間工學會誌 Vol.26 No.4
Due to the high occurrence rate of musculoskeletal disorders(MSDs), many Korean companies adopted various assessment tools to evaluate workers' musculoskeletal stress. Using the results of this evaluation, tasks were selected for improvements. However, there are still many workers who complained of musculoskeletal stress of their tasks. Their tasks usually consist of repetitive activities and a short rest cycle. This prompts a concern of reliability of the evaluation tools and especially RULA. Thus in this study, OCRA(The Occupational Repetitive Action tool) was used to check whether RULA(Rapid Upper Limb Assessment) evaluates workers' musculoskeletal stress reasonably well since OCRA has been known to be a good evaluation tool for repetitive tasks and tasks with short recovery periods. The evaluation was conducted on 142 tasks. It was found that 65 tasks showed higher action levels by OCRA than by RULA. However, 13 tasks showed the reversed result and 64 tasks showed the same level regardless of the evaluation tool. It was concluded that either RULA or OCRA alone cannot evaluate all types of tasks very well. It is suggested that OCRA needs to be used with RULA together for the evaluations of musculoskeletal stress at workplaces where repetitive activities and short recovery periods exist.
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