Abstract
Analysis of work posture of workers is an effective research area in manufacturing sector in India. Manufacturing plays a significant role to develop a country. Lots of human involvements are required to successfully execute the various operations involved in this area. Long manual working hours with traditionally designed tools and un-ergonomic work posture can cause musculoskeletal disorders and other occupational health problems among welders. Prolonged working hours exceed the physical capacity of the workers that causes' discomfort, physical fatigue, joints pain, swelling, strain, sprain of ligaments and soft tissues. Work related musculoskeletal disorders (WRMSD) in the form of repetitive motion injuries, cumulative trauma disorders, body fatigue and strain injuries are very common health problems of workers of different small & medium scale welding units in our country. The productivity and cost benefits of welding units are highly related with the physical comfort of the welders. The data of musculoskeletal disorder of workers of welding units was collected evaluated and validated by using RULA, OWAS and Discomfort Questionnaire and a design solution suggested.
Highlights
Proper occupational hygiene, proper working environment and appropriate postural methods of the workers are highly neglected in small scale manufacturing sectors in our country
The result of RULA score indicates that the working postures of most of the workers were above the line indicated in the figure 4
Immediate change of Ergonomic intervention was needed of the welders
Summary
Proper working environment and appropriate postural methods of the workers are highly neglected in small scale manufacturing sectors in our country. Proper ergonomically design of work -station can increase the productivity, integration, workers comfort, worker variety and security & safety up to a certain extent. Product quality and efficiency of the welders will be reduced and body fatigue, muscular pain should be increased if no Ergonomic interventions among welders is taken. Designed work station, proper planning and scientific body postures of welders can reduce these problems partially. The appropriate Ergonomics guidance and awareness programmers to the workers are essential to overcome work related musculoskeletal problems that will help to improve health and physical capabilities of the welders and the job quality. Most of the work related MSDs are cumulative trauma disorders which result from exposures to high or low intensity loads acting over a long period of time repeatedly
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