The evaluation of target achievement of coal barging at PT Kideco Jaya Agung site Tanah Merah Coal Terminal

Indrie Nur Ariesta, Eko Santoso, Riswan Riswan

Abstract


ABSTRAK

Volume dan tonase batubara pada kegiatan pengapalan sangat penting sebagai dasar pembayaran oleh pembeli. Perbedaan hasil pengukuran tonase batubara antara di barge dan di vessel terkadang terjadi. Pada penelitian ini diidentifikasi penyebab perbedaan tersebut sekaligus dianalisis ketercapaian target penjualan di terminal batubara Tanah Merah. Metode draught survey dilaksanakan di jetty (pelabuhan) dengan cara pembacaan draught mark pada barge dan vessel saat kondisi awal (initial) dan akhir (final) untuk mendapatkan bobot batubara yang dimuat. Waktu penelitian selama 3 bulan sejak November 2017 sampai dengan Januari 2018. Dalam 32 kali pemuatan, sekitar 40% target pengapalan yang tidak tercapai. Estimasi dengan menggunakan grafik, dimana menggunakan persamaan y=0,9976x – 351,37 diperoleh hasil simulasi untuk vessel 50.000 MT dengan pencapaian 97.05%, serta selisih 2.94%, untuk vessel 65.000 MT dengan pencapaian 97.21% dan selisih 2.78%, untuk vessel 80.000 MT dengan pencapaian 97.32% dan selisih 2.68%, sedangkan untuk vessel 100.000 MT dengan pencapaian 97.40% dan selisih 2.60%. Kemudian dilakukan simulasi perubahan densitas, karena perubahan quantity akan berubah nilai nya seiring dengan bertambahnya rank densitas yang digunakan. Hasil penelitian ini bermanfaat sebagai referensi dalam upaya kontrol kuantitas penjualan produk tambang batubara.

 

Kata-kata Kunci : pengapalan, mother vessel, stockpile, pelabuhan, draught survey

 

ABSTRACT

Coal volume and tonnage determined during shipping are critical parameters that serve as the basis for buyer payment. However, discrepancies between coal tonnage measured on the barge and the vessel are occasionally encountered. This study aimed to identify the causes of these discrepancies and evaluate the achievement of shipping targets at the Tanah Merah Coal TerminalA draught survey was conducted at the jetty by measuring the draught marks of both the barge and the vessel under initial and final loading conditions to determine the loaded coal tonnage. The study covered 32 loading operations from November 2017 to January 2018, of which approximately 40% failed to meet the planned shipping target. Regression analysis produced the equation y = 0.9976x − 351.37, which was used to simulate loading performance for vessels with capacities of 50,000–100,000 MT. The simulation indicated target achievement rates ranging from 97.05% to 97.40%, corresponding to discrepancies of 2.94% to 2.60%. Additional density simulations showed that estimated coal quantity varies with the density value adopted in the calculations. These findings provide a practical reference for improving quantity control and reducing tonnage discrepancies in coal shipping operations.

 

Keywords: barging, mother vessel, stockpile, jetty, draught survey

Keywords


coal barging; coal terminal; draught survey; jetty; pengapalan; mother vessel; stockpile; pelabuhan; draught survey; mother vessel

Full Text:

63-67

References


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DOI: https://doi.org/10.20527/jhs.v11i2.20332

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Contact

Mining Engineering Study Program, Faculty of Engineering ULM

Jl. Jenderal Achmad Yani KM 35,5 Banjarbaru,

South Kalimantan – 70714

 

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