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All Journal Teras Jurnal Jurnal Penelitian Sekolah Tinggi Transportasi Darat (JINSENG) Journal of Industrial Innovation and Safety Engineering Jurnal Teknik Sipil
Christopher Davito Prabandewa Hertadi
Teknik Industri, Institut Teknologi Kalimantan
Automotive Engineering Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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Perbaikan Sistem Monitoring Sertifikasi Pekerja Berbasis Dashboard Interaktif dengan Metode PDCA Putri Nabila; Christopher Davito Prabandewa Hertadi
Journal of Industrial Innovation and Safety Engineering (JINSENG) Vol 3 No 2 (2025): JINSENG Volume 3 Nomor `2 July 2025
Publisher : Fakultas Rekayasa dan Teknologi Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/jinseng.v3i2.8481998

Abstract

Worker certification is an important aspect in supporting company operations, especially in the oil and gas industry which has high work risks and requires workers with competencies that meet established standards. PT Pertamina Hulu Indonesia Regional 3 Zone 9 needs to ensure that worker certification validity periods are properly monitored so that recertification can be planned on time. The problem identified in this study is that certification monitoring is still carried out manually using Microsoft Excel, which requires data to be checked one by one and increases the risk of overlooking certifications that are approaching their expiration dates. This study aims to apply the Plan-Do-Check-Act (PDCA) method to improve the monitoring system and to design an interactive dashboard to support the control of worker certification data. The data used in this study consisted of historical training and certification records from 2023 to 2025. Data processing was conducted through cleaning, standardization, Master Data preparation, and the addition of supporting columns such as expired date, total day, month, remaining days, status reminder, priority, cost cluster, and training category. The processed data were then developed into dashboards using Microsoft Excel and Power BI. The results show that the designed dashboard can present certification information in a more concise, structured, and understandable format. Microsoft Excel was considered more suitable for daily operational monitoring because it is easy for the Human Capital Business Partner (HCBP) function to use, while Power BI was more effective for reporting needs due to its stronger visual display. The application of PDCA and the design of an interactive dashboard can support a more directed worker certification monitoring process. Keywords: PDCA, dashboard, monitoring, certification, Power BI
Identifikasi Waste Dengan Metode Value Stream Mapping (VSM) Pada Proses Pemeliharaan Kelapa Sawit Di PT. Perkebunan Nusantara IV Regional V Rumondang Amelya Boru Marpaung; Christopher Davito Prabandewa Hertadi
Journal of Industrial Innovation and Safety Engineering (JINSENG) Vol 4 No 1 (2026): JINSENG Volume 4 Nomor 1 January 2026
Publisher : Fakultas Rekayasa dan Teknologi Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/jinseng.v4i1.8482017

Abstract

TThe process of oil palm plantation maintenance at PT Perkebunan Nusantara IV Regional V that is not running optimally can cause various activities that do not add value (waste), such as waiting time, unnecessary movements, excess processes, and inefficient use of resources. The process of oil palm plantation maintenance includes various activities such as disk and market pickers, wire rope pickers, pest control, castration, preliminary shoots, stock inventory, construction of garden facilities, fertilization, and insertion. The complexity of these activities has the potential to waste time, so exploration was carried out through field observations, interviews, documentation, and literature studies to classify activities into Value Added (VA) and Non Value Added (NVA). The current state results show a Value Added Time (VAT) of 8,636 hours and a Non Value Added Time (NVAT) of 2,344 hours, which is dominated by wasteful waiting, transportation, and unnecessary movements. Based on this analysis, a future state was compiled with recommendations for improvements in the form of adding a tool warehouse and water tank in the garden area, adding workers, and improving coordination and process flow. This proposal is estimated to reduce NVAT to 1,640 hours and increase the efficiency of the oil palm maintenance process. With a Process Cycle Efficiency (PCE) value of 78.65%, dominated by wasteful waiting, transportation, and unnecessary movements, a future state was developed with recommendations for improvements such as the addition of a tool warehouse and water tank in the plantation area, additional manpower, and improved coordination and process flow. This proposal is estimated to reduce NVAT to 1,640 hours and increase the PCE value to 81.23%, thereby increasing the efficiency of the oil palm maintenance process by 2.58%
Analysis of Public Transportation User Dynamics Regarding Balikpapan City Trans (BaCitra) Policy Tjang Meike Theresia Chen; Christopher Davito Prabandewa Hertadi; Alvin Muhammad ‘ Ainul Yaqin
Jurnal Penelitian Sekolah Tinggi Transportasi Darat Vol 16 No 2 (2025): December 2025
Publisher : Politeknik Transportasi Darat Indonesia - STTD Bekasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55511/jpsttd.v16i2.739

Abstract

The emergence of Balikpapan City Trans (BaCitra) as a new mode of transportation has caused concern among public transportation (Public Transportation) drivers due to a decline in passenger numbers. This study aims to analyze the impact of BaCitra's presence on public transportation usage using a Dynamic System approach. The analysis was conducted to identify factors influencing mode choice, develop a Causal Loop Diagram (CLD) and Stock and Flow Diagram (SFD), and formulate improvement strategies that could create intermodal balance. Based on existing modeling results, within five years the number of Public Transportation passengers decreased from 9,516 to 4,228 passengers, while the number of BaCitra users increased from 8,125 to 21,447 passengers. This imbalance led to the formulation of seven improvement scenarios. Scenario 7, which is a combination of increasing BaCitra fares and maximizing Public Transportation safety and comfort (value 1), is considered the most effective scenario. The implementation of this scenario resulted in 15,523 Public Transportation passengers and 14,112 BaCitra passengers. The results of the study show that this combined strategy is able to create a balance in the choice of transportation modes by the community, so that Public Transportation can continue to operate without sacrificing the quality of BaCitra services.
Optimasi Penjadwalan Proyek Menggunakan CPM, Gantt Chart dan Resource Leveling Pada Konstruksi Tangki Minyak dan Gas Christopher Davito Prabandewa Hertadi; Ghina Suhaimah Amin; Vridayani Anggi Leksono
Teras Jurnal : Jurnal Teknik Sipil Vol 16 No 2 (2026): Teras Jurnal (September 2026)
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v16i2.1415

Abstract

Abstrak   Penelitian ini bertujuan untuk mengoptimalkan penjadwalan proyek konstruksi tangki penyimpanan minyak dan gas melalui pendekatan terintegrasi yang mengkombinasikan Critical Path Method (CPM), Gantt Chart, dan Resource Leveling. Studi ini menggunakan desain explanatory case study pada satu proyek konstruksi yang dilaksanakan oleh PT Bukaka Teknik Utama untuk Pertamina Hulu Sanga-Sanga. Data diperoleh dari dokumen proyek dan wawancara semi terstruktur dengan tim manajemen proyek. Analisis dilakukan melalui identifikasi jalur kritis, visualisasi jadwal, serta redistribusi tenaga kerja pada aktivitas non kritis. Hasil penelitian menunjukkan bahwa aktivitas Radiography Test for Shell Plate Thickness 8 merupakan aktivitas kritis utama yang mempengaruhi durasi proyek. Tanpa optimasi, proyek diproyeksikan mengalami keterlambatan selama 444 hari. Setelah penerapan resource leveling, jadwal proyek dapat dipercepat hingga 455 hari dengan penambahan sumber daya. Temuan ini membuktikan bahwa integrasi metode penjadwalan konvensional mampu meningkatkan kelayakan jadwal dan efisiensi pemanfaatan tenaga kerja secara signifikan.   Kata kunci: Project scheduling, CPM, Gantt chart, Resource leveling, Oil and gas construction.   Abstract   This study aims to optimize project scheduling in an oil and gas storage tank construction project using an integrated approach combining the Critical Path Method (CPM), Gantt Chart, and resource leveling. An explanatory single case study design was applied to a project executed by PT Bukaka Teknik Utama for Pertamina Hulu Sanga-Sanga. Data were collected from project documents and semi structured interviews with project management personnel. The analysis involved critical path identification, schedule visualization, and manpower redistribution across non critical activities. The results indicate that the Radiography Test for Shell Plate Thickness 8 is the main critical activity influencing overall project duration. Without optimization, the project was projected to experience 444 day delay. After applying resource leveling, the project completion date was advanced by 455 days with additional resources. These findings demonstrate that integrating conventional scheduling tools can significantly improve schedule feasibility and workforce efficiency in complex construction projects.   Keywords: Project scheduling, CPM, Gantt chart, Resource leveling, Oil and gas construction.
Optimasi Penjadwalan Proyek Menggunakan CPM, Gantt Chart dan Resource Leveling Pada Konstruksi Tangki Minyak dan Gas Christopher Davito Prabandewa Hertadi; Ghina Suhaimah Amin; Vridayani Anggi Leksono
Teras Jurnal : Jurnal Teknik Sipil Vol 16 No 2 (2026): Teras Jurnal (September 2026)
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v16i2.1415

Abstract

Abstrak   Penelitian ini bertujuan untuk mengoptimalkan penjadwalan proyek konstruksi tangki penyimpanan minyak dan gas melalui pendekatan terintegrasi yang mengkombinasikan Critical Path Method (CPM), Gantt Chart, dan Resource Leveling. Studi ini menggunakan desain explanatory case study pada satu proyek konstruksi yang dilaksanakan oleh PT Bukaka Teknik Utama untuk Pertamina Hulu Sanga-Sanga. Data diperoleh dari dokumen proyek dan wawancara semi terstruktur dengan tim manajemen proyek. Analisis dilakukan melalui identifikasi jalur kritis, visualisasi jadwal, serta redistribusi tenaga kerja pada aktivitas non kritis. Hasil penelitian menunjukkan bahwa aktivitas Radiography Test for Shell Plate Thickness 8 merupakan aktivitas kritis utama yang mempengaruhi durasi proyek. Tanpa optimasi, proyek diproyeksikan mengalami keterlambatan selama 444 hari. Setelah penerapan resource leveling, jadwal proyek dapat dipercepat hingga 455 hari dengan penambahan sumber daya. Temuan ini membuktikan bahwa integrasi metode penjadwalan konvensional mampu meningkatkan kelayakan jadwal dan efisiensi pemanfaatan tenaga kerja secara signifikan.   Kata kunci: Project scheduling, CPM, Gantt chart, Resource leveling, Oil and gas construction.   Abstract   This study aims to optimize project scheduling in an oil and gas storage tank construction project using an integrated approach combining the Critical Path Method (CPM), Gantt Chart, and resource leveling. An explanatory single case study design was applied to a project executed by PT Bukaka Teknik Utama for Pertamina Hulu Sanga-Sanga. Data were collected from project documents and semi structured interviews with project management personnel. The analysis involved critical path identification, schedule visualization, and manpower redistribution across non critical activities. The results indicate that the Radiography Test for Shell Plate Thickness 8 is the main critical activity influencing overall project duration. Without optimization, the project was projected to experience 444 day delay. After applying resource leveling, the project completion date was advanced by 455 days with additional resources. These findings demonstrate that integrating conventional scheduling tools can significantly improve schedule feasibility and workforce efficiency in complex construction projects.   Keywords: Project scheduling, CPM, Gantt chart, Resource leveling, Oil and gas construction.
Co-Authors Alvin Muhammad ‘ Ainul Yaqin Ghina Suhaimah Amin Putri Nabila Rumondang Amelya Boru Marpaung Tjang Meike Theresia Chen Vridayani Anggi Leksono