Fishbone Analysis of Coal Getting Activities to Achieve Productivity Target Sulistio Adhi Pradana- Mixsindo Korra Herdyanti- Irfan Marwanza
Mining Engineering Department, Faculty of Earth Technology and Energy, Universitas Trisakti, Jalan Kyai Tapa No.1, Tomang, Grogol Petamburan, West Jakarta 11440
Abstract
PT X is located in East Kalimantan, and it is one of the major coal mining companies in Indonesia. PT X operate the mining operation with the open pit method. The productivity of mining equipment is an essential matter in mining activities- therefore, it is necessary to conduct a technical study on the coal-getting process to reach the productivity target. According to the standard operating procedures of PT X, coal-getting is a series of activities that consist of coal cleaning, loading, hauling, and dumping. This research was conducted directly in the mining area of PT X to obtain primary data on all coal-getting activities, observe for problems that cause low productivity in coal-getting, and provide technical studies with fishbone analysis to solve problems found during the observation. From this research, using an excavator with a cutting-edge bucket is sufficient in coal cleaning activities. The effectiveness of loading time significantly affects the productivity of the loading and unloading equipment. Distance or road conditions affect the coal hauling activity- the existence of obstacles to dumping activities, the vessel occupancy factor, and the lifting time cycle significantly affect the productivity of the hauler.
