Journal of the Korea Safety Management & Science (대한안전경영과학회지)

Korea Safety Management & Science (대한안전경영과학회)
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An Ergonomic Research on Injurious Factors Causing Musculoskeletal Disorders at a Bakery Workplace

인간공학적 접근을 통한 제빵업의 근골격계 질환 유해요인 조사

  • 양성환 (국립한국재활복지대학 의료보장구) ;
  • 조문선 (국립한국재활복지대학 의료보장구) ;
  • 강필 (국립한국재활복지대학 의료보장구)
  • Published : 2004.06.01
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Abstract

The purpose of this study is to find injurious factors and to propose an improvement plan on workers' musculoskeletal disorders at a bakery workplace through analyzing the symptom, work posture and quantitative estimate. For this study, a survey and ergonomic estimate methods were adopted. According to the survey, it was analyzed that 429 workers corresponding to 68.2% of the response have been experienced the symptoms of musculoskeletal disorders such as an ache, prickle and numbness. The result of QEC analysis shows that shoulder and waist are highly exposed to musculoskeletal disease. The result of RULA analysis shows that injurious factors of muscle, weight and repeated operations are a little higher than those of operation posture. The result of SI estimate shows that pre-treatment of making bread requiring highly repeated operation gets the highest point of 81, on the other hand, chocolate-coating job requiring relatively low speed and short time gets the point of 4.5. Based on the analyzed results, improvement plan to prevent the musculoskeletal disorders against injurious working process of a bakery workplace. The goal of this study is to propose the improved scheme that prevents the workers against musculoskeletal disorders. A questionnaire and an ergonomic assessment method were adopted to analyze the symptoms of workers' musculoskeletal disorders, and an analysis of working postures and a quantitative assessment on various processes were performed to find out harmful factors of workplace.

Keywords

References

  1. 한국산업안전공단, 안전작업, 기술지침(KOSHA-CODE집), 2002
  2. 양성환, 신발제조업의 작업관련 근골격계 질환 예방을 위한 인간공학적 평가기법의 비교, 한국산업안전학회지, Vol. 15, No. 2, pp.136-142, 2000
  3. 김대성, 양성환 외, 작업자세에 대한 인간공학적 평가 도구들의 비교, 대한인간공학회 추계학술대회 논문집, 1999
  4. 박동현, 한상환, 범용 위험도 평가서를 이용한조선업체 작업에서의 누적외상성질환에 대한인간공학적 분석, 한국산업위생학회지, Vol. 8, No. 1, pp. 24-35, 1998
  5. 양성환, 김대성, 박범, 갈원모, 강영식, 요통 예방을 위한 요추부하 평가에 관한 연구, 한국산업안전학회지, Vol. 15, No. 3, 1998
  6. 양성환, 김대성, 박범, 요배력 측정 및 L5/S1 요추부하 평가에 관한 연구, 한국산업안전학회지, vol. 12, No. 3, pp. 161-165, 1997
  7. Anderson, C. B. J., Epidemiologic aspects on low back pain in industry, Spine, 6, pp. 53-60, 1981
  8. Bernard, T. M., Computerized dynamic bio-mechanical simulation of lifting versus inverse dynamics model: effects of task variables, Ph. D. Dissertation, Texas Tech University, 1995
  9. Bhattacharya, A., Mcdothlin, J. D., Occupational Ergonomics, Marcel DeMcer, Inc., 1996
  10. Chafnn, D. B., Anderson, G., Occupational Bio-mechanics, John Wi]ey & Sons, Inc. 1991
  11. Garg, A., Lifting and back injuries A Reviewof the causes of this industrial health problem,and the major methods used to combat it. PlantEngineering, 37, pp. 67-71, 1983
  12. Karhu O, et al, Correcting working postures inindustry : A practical method or analysis, Applied Ergonomics, Vol. 8. pp. 199-20], 1977
  13. Karhu O, et al, Observing working postures inindustry : Example of OWAS application, Applied Ergonomics, Vol. 12. pp. 13 - 17, 1981
  14. Kennit C., et al, Influence of lift moment in determining MAWL, Human Factors, Vol. 39,No. 2, pp. 312-322, 1997 https://doi.org/10.1518/001872097778543813
  15. Khalil, T. M., et al, Ergonomics in back pain : A guide to prevention and rehabilitation, VAN NOSTRAND REINHOLD, 993
  16. Kumar, S., Mital, A., Electromyography in ergonomics, Taylor & Francis, 1996
  17. McAtamney L, et al, RULA : a survey method for the investigation of work-related upper limb disorders, Applied Ergonomics, VOI. 24, pp. 91-99, 1993
  18. Millar, D. J., Summary of proposed national strategies for the prevention of leading work-related diseases and injuries, Part 1' Am J Ind Med, 13, pp. 223-240, 1988
  19. Mirka, C. A., A stochastic simulation model of the muscles of the trunk during lifting, Ph. D. Dissertation, Ohio State University, 1992
  20. Mital, A., Nicholson, A. S., Ayoub, M. M., A guide to manual materials handling, Taylor & Francis, 1997
  21. Pulat, B. M., Fundamentals of industrial ergonomics, Printice Hall, pp. 52-53, 1992
  22. Simon m, Hsiang, et al, Low back pain(LBP) and Lifting technique-A review, Industrial Ergonomics, Vol. 19, pp. 59-74, 1997