ANALYSIS OF MENTAL WORKLOAD AND FATIGUE OF PACKER UNIT OPERATORS USING NASA-TLX AND SOFI METHODS Mila Faila Sufa, Dyah Kurnia Sari
Universitas Muhammadiyah Surakarta
Abstract
Human activities can be grouped into two main components including physical activity and mental activity. Mental workload is a combination of a component regarding the condition of workers, in terms of time and demands of work tasks related to the workload that has been given. PT. XYZ is one of the Indonesian companies engaged in the cement industry, of course a large company that has a high level of work environment risk and high demand for orders requires the company to carry out continuous production. The research focused on machine operators in the packer operation section to determine the mental workload and the level of fatigue felt by the operator using the NASA-TLX and SOFI methods. Based on the NASA-TLX questionnaire, the results of the highest level of mental workload for packing machine and palletizer machine operators are in the high category, while the SOFI questionnaire results in the highest level of fatigue on packing machine and palletizer machine operators, which are in the medium category. The results of the correlation test there is a relationship between mental workload and the level of fatigue of the two machine operators. Suggestions for improvement from this research are adjusting the work shift schedule regulations that are applied, adjusting the work of the operator based on the level of his work ability, taking adequate rest, using personal protective equipment, giving rewards for the achievements achieved by the operator.
