Ergonomic risk assessment and workstation improvement for grass-broom labors in Bing sub-district, Non Sung district, Nakhon Ratchasima province

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Published: Dec 25, 2020
Keywords:
Ergonomic risk assessment grass-broom labors muscle fatigue musculoskeletal disorders

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Khanidtha Meevasana
Department of Occupational Health and Safety, Institute of Public Health, Suranaree University of Technology
Phannita Kamonklang
Department of Occupational Health and Safety, Institute of Public Health, Suranaree University of Technology
Kullaput Kumpangyai
Department of Occupational Health and Safety, Institute of Public Health, Suranaree University of Technology
Waritsara Ngiwruang
Department of Occupational Health and Safety, Institute of Public Health, Suranaree University of Technology
Chonnida Doongsoongnoen
Department of Occupational Health and Safety, Institute of Public Health, Suranaree University of Technology
Sirirat Meebila
Department of Occupational Health and Safety, Institute of Public Health, Suranaree University of Technology
Orawan Lumlerd
Department of Occupational Health and Safety, Institute of Public Health, Suranaree University of Technology
Nattapit Rattanachotruengsuk
Department of Occupational Health and Safety, Institute of Public Health, Suranaree University of Technology
Chalermsiri Theppitak
Department of Occupational Health and Safety, Institute of Public Health, Suranaree University of Technology

Abstract

The preliminary observation was conducted among grass-broom in Bing Sub-district, Non Sung District, Nakhon Ratchasima Province. It was found that their working postures are at risk of causing occupational musculoskeletal disease, i.e.
awkward postures. The awkward posture is when the position of body parts such as the torso, arms, legs, or neck deviates from their normal or natural posture. Either twisting, bending, or stretching the limbs too much can be the cause of the acute or chronic musculoskeletal disorders. Therefore, the ergonomic problems among the 30 grass-broom labors were studied by assessing the level of muscle fatigue in different parts of the body and the ergonomic risks in different working postures using Rapid Upper Limp Assessment (RULA) technique. To reduce the ergonomic risk, the new workstation was introduced and the ergonomic risk levels
were compared with the conventional work postures. The results showed that posture in the coating step had the highest RULAfinal score due to the forward leaning, neck bending, and hand/wrist twisting, resulting in the highest RULA final score of 5-6 (further investigation and change are required soon). After using the new workstation, RULA final score was decreased to 3-4 (further investigation and continuously monitored in detail).

Article Details

Issue
Vol. 3 No. 2 (2020): July - December 2020
Section
Original Articles
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