HEALTH RISK ANALYSIS OF COAL DUST EXPOSURE IN OPEN MINING SYSTEMS TO DECREASED LUNG FUNCTION OF WORKERS (CASE STUDY: MINING SERVICE CONTRACTOR PT. X, KUTAI KARTANEGARA, EAST KALIMANTAN)

• Main Author: Musyaddad Abdul Aziz, Hamas
• Format: Theses
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/67527
• Institution: Institut Teknologi Bandung

Mining activities can cause health problems, coal dust is one of the main sources of health hazards for coal workers. Ineffective control of exposure to coal dust can endanger the health of workers and reduce workers' lung function. This study uses a scientific approach to health risk analysis to see how big the risk level of workers’ exposure to inhaled coal dust at PT. X which is engaged in coal mining contractor services in Kab. Kutai Kartanegara, East Kalimantan, with a sample of 30 respondents in the exposed group and 10 respondents in the control group. A sampling of inhaled dust on workers using a personal dust sampler and measurement of crystalline silica in coal dust was carried out according to the NIOSH 7500 method using X-Ray Diffraction (XRD), while to see the effect of exposure that resulted in decreased lung function of workers, spirometry and thorac examination data were analyzed. The results showed that the concentration value of dust containing crystalline silica for 8 working hours in 13 people or 43.33% of the exposed group respondents exceeded the exposure standard of Permenaker No. 5 of 2018 and ACGIH 2021 with a concentration value of > 0.025 mg/m3. The relationship between the dose of coal dust intake to the body's response in the form of a decrease in lung function cannot be proven. Based on the Reference Dose (RfD) value of dust containing crystalline silica by Permenaker No. 5 of 2018 and ACGIH 2021, in the exposed group at real-time calculations, there are no respondents who have an HI (Hazard Index) value > 1, but if the HI assessment is further carried out over a time period of up to 30 years in the future there is an increase of 50% of respondents will have an HI value >1. As for the control group, both in real-time calculations and in the future time period, there are no respondents who will obtain an HI value > 1.