PENJADWALAN KERJA MOTOR GRADER GD14M MENGGUNAKAN METODE URCI UNTUK PENINGKATAN PRODUKSI ALAT ANGKUT DI PIT 2 BANKO BARAT PT. BUKIT ASAM, Tbk, TANJUNG ENIM SUMATERA SELATAN

Abstract

PT Bukit Asam is one of the world-class energy companies engaged in coal mining. PT Bukit Asam has several mining locations, one of which is Pit 2 Banko Barat Mine that utilizes a truck and shovel mining system. The transportation route for coal production is a crucial aspect in the coal mining operation at Banko Barat Mine. To ensure the proper functioning of the transportation route, a reliable Motor Grader is required. This research discusses the performance of Caterpillar 14M3 motor grader. The objectives of this research are to determine the utilization of hauling equipment downtime, establish the work scheduling of the motor grader for haul road maintenance, and assess the productivity of hauling equipment before and after road maintenance. The actual road conditions are determined by measuring the resistance value using the URCI assessment. The cycle time of DT Kamaz 6520 hauling equipment decreased from 29.93 minutes to 26.88 minutes after maintenance. The scheduling of the motor grader in Pit 2 is prioritized for maintenance as follows: segment 1 every 150 minutes, segment 2 every 120 minutes, segment 3 every 129 minutes, segment 4 every 205 minutes, segment 5 every 180 minutes, segment 6 every 560 minutes, segment 7 every 67.2 minutes, segment 8 every 71.3 minutes, segment 9 every 300 minutes, segment 10 every 92 minutes, segment 11 every 65 minutes, and segment 12 every 324 minutes. The productivity of Kamaz 6520 dump truck increased from 42.30 tons/hour to 47.10 tons/hour after maintenance.