Analisis faktor yang mempengaruhi efisiensi kerja pada produktivitas alat gali-muat overburden di PT Multi Tambangjaya Utama

M. Rizali Rizki, Romla Noor Hakim, Karina Shella Putri

Abstract


Evaluasi produktivitas alat mekanis dalam penambangan menjadi penting karena kemampuan kerjanya menjadi pertimbangan dalam perencanaan dan pencapaian produksi. Komponen faktor yang mempengaruhi produktivitas spesifik pada alat gali muat antara lain bucket fill factor dan swell factor (faktor nilai tetap), serta cycle time dan efisiensi (faktor nilai berubah). Faktor mana yang paling berpengaruh dalam setiap evaluasi pencapaian target menjadi pertimbangan untuk penanganan kondisi yang sama. Metodologi penelitian terdiri dari pengumpulan data berdasarkan faktor pengaruh, perhitungan efisiensi dan produktivitas, kemudian membandingkannya dengan target, menganalisis faktor mana yang paling mempengaruhi produktivitas berdasarkan nilai korelasi (r), dan rekomendasi prioritas penanganan masalah berdasarkan diagram pareto. Data diambil untuk fleet PC1250 (No. Unit 5035) selama 16 hari. Berdasarkan hasil perhitungan diperoleh rata-rata produktivitas aktual sebesar 658,32 BCM/jam dengan target sebesar 670 BCM/jam, sehingga diperoleh ketercapaian sebesar 98,27%. Hasil korelasi antar variabel menunjukkan yang paling berpengaruh terhadap produktivitas adalah efisiensi (r = 0,86), dan yang paling mempengaruhi efisiensi adalah delay time (r = -0,96). Permasalahan efisiensi kerja yang diprioritaskan untuk ditanggulangi adalah alat gali muat dalam kondisi gantung menunggu alat angkut dan merapikan front (kumulatif frekuensi kejadian 100% dan kumulatif durasi 96%).

Keywords


delay time; korelasi ; pareto

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DOI: https://doi.org/10.20527/jhs.v8i3.11211

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