MULTIPLE ERGONOMIC ASSESSMENTS ANALYSIS ON DISTRIBUTION WORKERS AT PRINTING INDUSTRY
Nurainaa KABILMIHARBI1*, Syed N.S. KHAIRANI2
1Mechanical Engineering Department, Universiti Tenaga Nasional (UNITEN), 43000 Kajang, Selangor, Malaysia.
2Mechanical Engineering Programme, Universiti Tenaga Nasional (UNITEN), 43000 Kajang, Selangor, Malaysia
Number of accident cases reported to the Malaysian Social Security Organization (SOCSO) which are related to the number of diseases of musculoskeletal system and connective tissue is increasing rapidly since 2013 to 2017 where most of the accident cases reported comes from the manufacturing industry. Work related musculoskeletal disorder (WMSD) often happens among the workers due to manual material handling (MMH) while performing their everyday working task. The workers in printing and publishing industries especially in distribution section are exposed to risk of getting WMSD diseases. This is because every worker in the distribution section needs to perform MMH tasks such as lifting, bending, twisting, pulling, and pushing which involves repetitive motion. The objective of this study is to investigate the prevalence of musculoskeletal disorders diseases among the distribution workers by using multiple ergonomic assessment analysis such as Nordic Discomfort Questionnaire, Quick Exposure Check (QEC) Questionnaire and REBA Analysis. The results from Nordic Discomfort Questionnaire indicates that majority of the workers experienced discomfort on their upper back, lower back, hips and knee. Meanwhile, QEC Questionnaire shows that high exposure risk on the lower back among workers which are in the group age of 31-40 years old. Lastly, REBA Analysis shows that necessary or immediate changes needs to be take on two of the chosen working postures in order to prevent from much serious WMSD developing in future among the workers. Improvement or mitigation related to the design of the workstation might reduce the development of WMSD among the workers and further reduce the risky awkward postures performed by the workers which will indirectly increase the performance of the worker and increase the productivity level of the company.
Keywords: WMSD, MMH, REBA, Nordic, QEC