A details ergonomics Risk assessment evaluation of some selected operation in an automotive plant was carried out. This evaluation was carried out with a view to assess the physiological cost of work among the operator during actual industrial operations, to assess the ergonomics risk factors at shop floor during actual operation with a view to minimise such risk factor through mechanisation or automation.Methods
Working heart rate of the workers were recorded manually to calculate the energy cost of work and workers ability to perform the shop floor operations. Risk factors were evaluated through extensive application of RULA and REBA at all pre-selected areas.Results
It could be observed from study that the mean working heart rate was found to be 112±1.3 beats.min-, oxygen uptake was computed to be 0.94±0.2 lit.min-1. The concomitant energy expenditure was found to be 4.7±1.0 Kcal.min-suggesting the job severity is varying from moderate to high. The sustainability of job @ 18.8 Kj.min-1. Is well within physical capacity of operators. The average RULA score readings are varying from 3.43±0.84 suggesting that the immediate action is not warranted. The average REBA scale was found to be 4.32±0.89 which is in agreement with that of RULA.Discussion
The work stress, postural stress, and lifting index have shown positive results. The ergonomics risk factors is well within safe limits. Operators are safe, healthy and productive at this stage. The results of all three sections are assessed and the difference was not statistically significant thus the ergonomics risk factors are considered not serious can be continued. However any frequency (increase production) schedule change, distance variations as well as horizontal variations needs to keep constant in this present situation.