MICROCLIMATE ASSESSMENT ON FATIGUE AND WORKLOAD IN THE PRODUCTION SECTION AT CV. WANA INDO RAYA LUMAJANG

Abstract

Microclimate is an environmental factor that plays an important role in determining the level of thermal comfort of workers and has a direct impact on fatigue and workload. The main objectives of this microclimate assessment are: (a) Identifying microclimate conditions in the work area, (b) Assessing the impact of the work environment on worker fatigue, both physically and physiologically, (c) Evaluating workload based on thermal conditions, to determine whether the work environment causes additional workload due to heat or cold stress, (d) Providing a scientific data basis for improving the work environment, such as ventilation arrangements, adding personal protective equipment, or ergonomic work scheduling, (e) Supporting productivity and work safety by ensuring the work environment meets thermal comfort standards and does not cause long-term health problems. The average air temperature measurement result was 30.69 °C, higher than the ergonomic standard of 21 °C – 24 °C. The average air humidity measurement result = 31.46%, lower than the ergonomic standard of 40 – 60%. The average wind speed measurement result = 0.51 meters/second, higher than the ergonomic standard of 0.15 – 0.25 meters/second. The level of fatigue was objectively measured based on the percentage increase in the work pulse rate (Heart Rate Reserve). Work fatigue was measured based on the Percentage Increase in Work Pulse Rate (PDNK) or Heart Rate Reserve (HRR). The results of the measurement and analysis of the average PDNK or HRR = 39.12% included in the category of “SEVERE” work fatigue. Workload is measured based on the Working Pulse Rate (DNK) or Heart Rate (HR). The average measurement result of the Working Pulse Rate (DNK) or Heart Rate (HR) = 145.99 Beats/Minute is included in the “HEAVY” workload category