Aktual Evaluasi Cycle Time Kesesuaian Armada Alat Gali-Muat Angkut Produksi Andesit
DOI:
https://doi.org/10.29313/bcsme.v6i1.23453Keywords:
Actual Cycle Time, Fleet Match, Produktivitas, ProduksiAbstract
Abstract. PT Winner Prima is an andesite mining company located in Banten Province that applies an open-pit mining method. Production activities depend on the performance of excavators and dump trucks, with productivity influenced by actual cycle time, equipment efficiency, and fleet match suitability. Observation results show excavator production of 35,754.07 tons per month and dump truck production of 35,330.14 tons per month, indicating an imbalance in equipment performance that affects overall production effectiveness. This study collected primary data through direct observation of operating times, including loading, dumping, maneuvering, travel time, and work delays. Secondary data included administrative maps, geological maps, satellite imagery, rainfall data, and equipment specifications. The data were analyzed to determine actual cycle time, load capacity considering fill factor and swell factor, equipment productivity, and work efficiency based on Mechanical Availability (MA), Physical Availability (PA), Use of Availability (UA), and Effective Utilization (EU). Fleet match analysis was also conducted to identify equipment waiting times. The evaluation results show that adding 2 working hours increased production to 46,432.92 tons per month for excavators and 46,631.32 tons per month for dump trucks, allowing the production target to be achieved, although it requires overtime work in accordance with regulations.
Keywords: Actual Cycle Time, Fleet Match, Productivity, Production
Abstrak. PT Winner Prima merupakan perusahaan andesit di Provinsi Banten dengan metode tambang terbuka. Kegiatan produksi sangat bergantung pada kinerja alat gali-muat dan alat angkut. Produktivitas penambangan dipengaruhi actual cycle time, efisiensi kerja alat, serta kesesuaian armada kerja (fleet match). Hasil pengamatan menunjukkan produksi excavator sebesar 35.754,07 ton/bulan dan dump truck sebesar 35.330,14 ton/bulan. Perbedaan ini mengindikasikan adanya ketidakseimbangan kinerja alat yang berdampak pada efektivitas sistem produksi secara kesuluruhan. Metode penelitian ini meliputi pengumpulan data primer melalui pengamatan langsung waktu kerja alat, seperti waktu muat, dumping, manuver, perjalanan serta hambatan kerja. Data sekunder meliputi peta administrasi, peta geologi, citra satelit, data curah hujan dan spesifikasi alat mekanis. Data tersebut diolah untuk mengetahui actual cycle time, kapasitas muat dengan mempertimbangkan Fill Factor dan Swell Factor, produktivitas alat, serta efisiensi kerja berdasarkan Mechanical Availibiility (MA), Physical Availibility (PA), Use of Availibility (UA), dan Effective Ulitization (EU). Selain itu, dilakukan analisis fleet match untuk mengidentifikasi waktu tunggu dan antrean alat. Hasil evaluasi menunjukkan bahwa penambahan jam kerja selama 2 jam mampu meningkatkan produksi menjadi 46.432,92 ton/bulan untuk excavator dan 46.631,32 ton/bulan untuk dump truck, sehingga target produksi tercapai. Namun, penambahan jam kerja termasuk kerja lembur dan menghasukan membayar upah lembur sesuai peraturan.
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