Study of Intensity and Stress Due to Noise in Employees in The Production Unit at PT.
Authors: Hardjo Muh Fathur Rahman MT , Naiem M. Furqan , Muis Masyita 
Published: April 2024

Background: The era of industrialization characterized by mechanization, electrification, modernization and the latest technological transformation can lead to processes that generate noise in the workplace. Noise in the workplace can cause noise exposure in the workplace can cause hearing loss and work stress. Therefore, it is important to understand the relationship between workplace noise levels and workers' stress levels.
 
Research purposes: Finding the shape of the contour of worker noise levels and its relationship with worker stress levels.
 
Research methods: Using a cross-sectional design, with a sample size of 78 workers determined using the Accidental Sampling method. Statistical analysis uses the Pearson correlation test.
 
Research result: Shows that the shape of the noise contour is determined by variations in the noise level from the noise source varying from lowest to highest (87.2 dB, 89.9 dB, 91.8 dB, 93.4 dB, 94 dB, 95.6 dB, 100 dB, 101.3 dB, 105.5 dB). Noise exceeding the threshold value reflects the contour shape in some areas. Powerplant noise areas above the threshold value are found in ( Power Plant Lubricating Oil Tank (87.2 dB), Power Plant 1 Boiler Blowdown Tank (94 dB), Power Plant Pump Pipe (91.8 dB), Power Plant 1 Turbine (101 .3 dB), Air Drayer Installation Powerplant (93.4 dB), Plant Process Area noise above the threshold value in several areas ( Concentrator Process Plant (105 dB) BallMill Process Plant (100 dB), Area Concentrator Process Plant (98.8 dB), Concentrate Tank Process Plant (95.6 dB), Fixed Plant Area noise above the threshold value occurred at ( Slacker (89.9 dB), Concentrator (98.8 dB), Concentrate Tank (95.6 dB), and Cleaner Flotation (100 dB). Meanwhile in the Mining area, the highest noise is related to activities such as Exca-2000 Mining (105.5 dB), Drilling Diamond Mining (100 dB), and Drilling RC Mining (105.5 dB). The level of work stress shows that out of a total of 78 workers, 63 of them (around 11.1%) experienced severe stress, while there were no workers who experienced moderate levels of work stress out of a total of 15 workers involved in this research. This research found that there is a very weak and negative correlation between noise levels and work stress on noise risk. The results of the analysis show that the relationship between noise and work stress and noise risk has a correlation value of -0.112. Even though there is a weak negative relationship between these variables, this correlation is not statistically significant with a p-value of 0.327.
 
Conclusion: This research concludes that noise levels in the workplace vary and come from various sources with different intensities. Several areas at PT. X, such as Powerplant, Process Plant, Fixed Plant, and Mining area, have noise that exceeds the threshold value. Research also finds that most workers experience high levels of work stress. Although there was a negative correlation between noise and job stress, the relationship was not statistically significant.