Rifky Fajar Ramadhan

EVALUASI PRODUKTIVITAS PADA UNIT DUMP TRUCK DOUBLE TRAILER SDT 60 DAN SST 67 DI PT BUMA JOBSITE LATI, BERAU, KALIMANTAN TIMUR

Introduction

Evaluasi produktivitas pada unit dump truck double trailer sdt 60 dan sst 67 di pt buma jobsite lati, berau, kalimantan timur. Evaluasi produktivitas dump truck SDT 60 & SST 67 di PT BUMA Lati. Analisis overtime pergantian shift (38 jam/bulan) untuk maksimalkan produksi batubara. Solusi: kurangi waktu shift & jaga jarak aman.

Abstract

AbstrakUntuk memaksimalkan produksi batubara pada unit alat angkut perlu dilakukan evaluasi terhadap penggunaan waktunya.Salah satu waktu yang menjadi masalah pada alat angkut adalah waktu hambatan. Waktu hambatan yang terjadi pada alatangkut adalah banyak waktu ready yang terbuang akibat banyak waktu standby. Waktu standby yang terjadi adalah pada saatpergantian shift. Pergantian waktu shift pada unit alat angkut dt double trailer mercy actros 4054 SDT 60 dan scania r580 SST 67 melebihi waktu terjadwal yang ditetapakan PT BUMA jobsite Lati.Maka dari itu perlu dilakukan evaluasi penyebab overtime waktu pergantian shift. Setelah melakukan evaluasi rata-rata overtime dari waktu pergantian shift unit dt double trailer mercy actros 5054 dan scania r580 adalah 38 jam/bulan yang seharusnya 30 jam/bulan. Maka dari itu perlu dilakukan pengurangan waktu pergantian shift untuk unit alat angkut danmembuat jarak aman antar unit agar tidak ada unit yang saling berdekatan Ketika melakukan proses kegiatan pengangkutanbatubara.Kata Kunci: evaluasi, jarak aman AbstractTo maximize coal production in the conveyance unit it is necessary to evaluate the use of its time. One of the time problems with the conveyance is the time of the obstacle. The time constraints that occur on the conveyance is a lot of ready time that is wasted due to the many standby times. is at the time of shift change. The change in shift time on the transport unit dt double trailer mercy actros 4054 SDT 60 and scania r580 SST 67 exceeds the scheduled time set by PT BUMA jobsite Lati.Therefore, it is necessary to evaluate the causes of overtime shift time. After evaluating the average overtime of the shift time unit change dt double trailer mercy actros 5054 and scania r580 is 38 hours / month which should be 30 hours / month. Then it needs to be done Reducing shift time for transporting units and creating a safe distance between units so that there are no adjacent units when carrying out coal transportation activities.Keyword: evaluation, stopping distance

Review

This paper, titled "EVALUASI PRODUKTIVITAS PADA UNIT DUMP TRUCK DOUBLE TRAILER SDT 60 DAN SST 67 DI PT BUMA JOBSITE LATI, BERAU, KALIMANTAN TIMUR," addresses a critical operational challenge in coal mining: maximizing production by optimizing equipment usage time. The study focuses on evaluating productivity and identifying bottlenecks in dump truck operations at PT BUMA's Lati jobsite. Specifically, it highlights the issue of "obstacle time," characterized by significant "ready time" being wasted due to excessive "standby time," primarily during shift changes for double trailer units Mercy Actros 4054 SDT 60 and Scania R580 SST 67. The primary objective is to evaluate the causes of overtime experienced during these crucial shift transitions. The findings presented in the abstract indicate a clear deviation from operational targets, with shift change overtime averaging 38 hours per month, surpassing the scheduled limit of 30 hours per month. This quantification of lost productive time underscores the practical relevance of the study, as it identifies a tangible area for efficiency improvement within the coal transportation process. The paper proposes two key recommendations to mitigate this issue: reducing the duration of shift changes for transport units and implementing a safe distance protocol between units during coal transportation activities. These recommendations suggest a direct approach to enhancing operational efficiency and safety. While the study effectively identifies and quantifies a significant operational inefficiency, the abstract could benefit from providing more detail regarding the methodology employed for the evaluation and the specific root causes of the excessive shift change overtime. Merely stating that an "evaluation was done" leaves the reader wanting to understand *how* the 38 hours/month figure was derived and *why* these delays occur. Future research or a more comprehensive presentation of this work could elaborate on the analytical framework, delve into the specific factors contributing to the overtime (e.g., handover procedures, equipment readiness, personnel coordination), and offer more granular strategies for reducing shift change times beyond a general reduction. Additionally, the connection between "creating a safe distance between units" and "reducing shift change time" could be further clarified, as they appear to address distinct operational aspects, albeit both crucial for overall productivity and safety. Overall, this paper provides a valuable initial assessment of a pertinent operational challenge.

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