MUCHLIS, ZUKIRWAN (2018) KAJIAN TEKNIS KINERJA ALAT MUAT DAN ALAT ANGKUT UNTUK MENCAPAI SASARAN PRODUKSI BATU GAMPING DI PT. LAFARGE CEMENT INDONESIA KEC. LHOKNGA KAB. ACEH BESAR PROVINSI ACEH. Other thesis, Universitas Pembangunan Nasional "Veteran" Yogyakarta.
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Abstract
PT. Lafarge Cement Indonesia merupakan perusahan yang bergerak dibidang pertambangan dimana kegiatan penambangan batu amping dilakukan oleh PT. Macmahon Indonesia selaku kontraktor dari Perusahan PT. Lafarge Cement Indonesia. Lokasi penelitian dilakukan pada Quarry I level 130. Penambangan batugamping saat ini dilakukan dengan menggunakan 1 alat angkut Excavator Backhoe Caterpillar 390D dan 3 unit alat muat Dump Truck Caterpillar 773B. Jarak angkut dari front penambangan menuju Hopper adalah 1.150 meter. Permasalahan yang terjadi saat ini adalah belum tercapainya target produksi batugamping sebesar 5.500 ton/hari. Produksi aktual pada Quarry I level 130 dengan kombinasi alat muat dan alat angkut sebesar 4.948 ton/hari. Hal ini disebabkan rendahnya waktu kerja efektif akibat dari hambatan - hambatan yang ada sehingga efisiensi kerja alat menjadi rendah. Upaya yang dapat dilakukan agar target produksi batugamping tercapai yaitu dengan meningkatkan waktu kerja efektif alat angkut sehingga efisiensi kerja alat angkut meningkat dari 75,94% menjadi 78,39%. Produksi teoritis batugamping setelah meningkatkan waktu kerja efektif alat angkut meningkat dari 5.052 ton/hari menjadi 5.659 ton/hari. ABSTRACT PT. Lafarge Cement Indonesia is a mining company where limestone mining activities do by PT. Mcmahon Indonesia as contractor from PT. Lafarge Cement Indonesia. Research location is in Quarry I level 130. Limestone mining activities currently carried out using 1 unit Excavator Backhoe Caterpillar 390D and 3 units Dump Truck Caterpillar 773B. The distance from the mining front to hopper is 1.150 meter. The problem that occurred at this time is not reached its production target of limestone of 5.500 tons / day. The actual production on Quarry I level 130 with a combination of load and haul transport is 4.948 tons/day. this is due to the low effective working time resulting from the existing constraints so that the work efficiency of the equipment is low and the condition of the haulageway that has not met the minimum. Efforts that can be done so that the limestone production target is can achieved by increasing the effective working time so that the work efficiency of the equipment increases from 75,94% to 83,67% for hauling. The theoretical production of limestone after increasing the effective working time increases from 5.052 tons/day to 5.659 tons/day.
| Item Type: | Thesis (Other) |
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eko Yuli |
| Date Deposited: | 18 Jan 2018 04:08 |
| Last Modified: | 18 Jan 2018 04:10 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/14247 |
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