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All Journal Jurnal Manajemen Teknologi Journal of Business and Management EKOMBIS REVIEW: Jurnal Ilmiah Ekonomi dan Bisnis Jurnal Mirai Management Jurnal Studi Manajemen dan Bisnis Journal of Economic, Bussines and Accounting (COSTING) Jurnal Ilmu Sosial Politik dan Humaniora (Jisora) Inkubis: Jurnal Ekonomi dan Bisnis Economics and Business Journal Eduvest - Journal of Universal Studies Conference Proceedings International Conference on Education Innovation and Social Science
Yuanita Handayati
School of Business and Management, Institut Teknologi Bandung
Aerospace Engineering Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Health Professions Neuroscience Social Sciences Other

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ENHANCING COAL SUPPLY PERFORMANCE THROUGH LEAN COAL FLOW AND STOCKPILE CAPACITY OPTIMIZATION Ardaraja, Dian Lazuardy Bachtiar; Handayati, Yuanita
Journal of Economic, Bussines and Accounting (COSTING) Vol. 9 No. 1 (2026): COSTING : Journal of Economic, Bussines and Accounting
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/dm4v8w44

Abstract

This study evaluates the coal supply operations at a mine-mouth power plant that faces operational challenges due to increasing production and fluctuating demand, which have led to limited stockpile capacity and inefficient coal flow. By integrating safety stock analysis, livestock capacity planning, and lean management principles, the research identifies that the current fixed safety stock benchmark of 100,000 tons will be insufficient by 2027, requiring an increase to 171,194 tons/month to maintain a 95% service level. The findings reveal that the existing livestock capacity of 230,000 tons is inadequate for future needs, necessitating an expansion to approximately 764,108 tons to accommodate rising throughput and eliminate the need for costly temporary stockpiles and double handling. Implementing these structural improvements and reconfiguring the system to a direct coal flow is projected to reduce hauling distances by 0.6 km per ton, resulting in substantial operational cost savings of approximately Rp317.5 billion per year until 2027. Ultimately, this research provides an integrated framework that demonstrates how aligning physical infrastructure with lean principles can achieve sustainable economic benefits and ensure a more reliable coal supply chain.
Reducing Procurement Lead Time For Maintenance Spare Parts At Pt Bukit Asam Tbk Indriani, Oktavia; Handayati, Yuanita
EKOMBIS REVIEW: Jurnal Ilmiah Ekonomi dan Bisnis Vol 14 No 2 (2026): April
Publisher : UNIVED Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37676/ekombis.v14i2.9878

Abstract

PT Bukit Asam Tbk (PTBA) processed 2,679 procurement requests in the first half of 2025 with 55% consist of maintenance spare parts that are essential to keep operations run smoothly and reliably contains 1,368 PR (Purchase Requisition). The focus of this study was to examine and enhance the procurement lead time for maintenance spare parts from PR is submitted until a purchase order (PO) is finalized. The research methodology combined quantitative analysis of transaction data used BPMN modeling process and simulation through Bizagi software. Additional insights were gathered through interviews and focus group discussions (FGD) with relevant stakeholders. The As-Is process simulation shows that the total procurement lead time reached 60.5 days from start to finished well beyond the company's target of 50 days. The main delays occurred during the procurement execution phase and when PO creation, largely because of repetitive procedures and approval processes that required manual intervention. To tackle these challenges the Author proposed several business solution and approach Business Process Reengineering (BPR) mentioned electronic signatures to speed up approvals, establishing umbrella contracts to eliminate redundant procurement cycles, vendor rating system and a risk dashboard implementation that provides real-time visibility into potential issues. The To-Be simulation from proposed improvements in a blended scenario where 45% of procurements adopt umbrella contracts and 55% remain under conventional methods showed results the average lead time decreased to 44.7 days which is exceed to the expected KPI target. These results indicate that combination of digital approval workflows, standardized contract arrangements and proactive risk monitoring can substantially improve how efficiently procurement operates. Furthermore, this study also demonstrates the practical value of BPR can improve procurement operations more responsive and dependable within the mining sector.
Designing An Integrated Local Content Commodity Catalog and Monitoring Mechanism for Procurement at PT Bumi Energi Febriyani, Ade; Handayati, Yuanita
Inkubis : Jurnal Ekonomi dan Bisnis Vol. 8 No. 1 (2026): INKUBIS Jurnal Ekonomi Dan Bisnis
Publisher : Politeknik Siber Cerdika Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59261/inkubis.v8i1.154

Abstract

Background: The Domestic Component Level Policy (TKDN) is a strategic instrument of the government in encouraging national industrial independence through procurement mechanisms, especially in State-Owned Enterprises (SOEs). PT Bumi Energi as a national energy company is required to integrate TKDN in every procurement process. However, its implementation still faces challenges, especially at the stage of analyzing the minimum value of TKDN and monitoring post-contract realization. Objective: This study aims to analyze the influence of the weaknesses of TKDN monitoring on the effectiveness of the procurement process at PT Bumi Energi and formulate a strategy to improve it. Methods: The research method uses a qualitative approach with a case study design. Data was collected through semi-structured interviews, participatory observations, internal document review, and benchmarking with oil and gas sector companies that have more mature TKDN practices. The analysis was carried out using thematic analysis and gap analysis to compare existing conditions with ideal conditions based on regulations and best practices. Results: The results show that the weakness of verification standards, reliance on vendor self-declaration, and the absence of an integrated TKDN database affect the effectiveness of procurement decision-making and increase governance risks. Conclusion: This study concludes that strengthening TKDN monitoring procedures, establishing clear PIC mandates, and developing an integrated TKDN commodity catalog and database system are the key strategies to enhance procurement governance effectiveness at PT Bumi Energi. These findings contribute to the micro-organizational governance literature and provide actionable policy recommendations for SOEs facing similar TKDN compliance challenges.
Co-Authors Abdurrahman, Muhammad Milzam Ade Iasya, Ade Agung Pascasuseno Amani, Salma Aninda Annisa Ardaraja, Dian Lazuardy Bachtiar Arifiansyah, Faris Bobby, Caesar Ramos Deviana, Erlinda Diafan, Dionisius Baren Ermawan, Aria Rizki Fauzia, Zerlinda Nur Febriyani, Ade Gatot Yudoko Hikmatullah, Hikmatullah Humaira, Putri Irwansyah, Anjas Johannes, Diva Gloria Krishna Permadi Muhammad Hasan Albana Muhammad Luqman Arif Abdurrahman, Muhammad Luqman Arif Najamudin, Muhammad Zaim Narayana, I Putu Edward Noviasari, Ledy Diana Gilam Oktavia indriani Orieza Alif Putra Purnomo, Orieza Alif Putra Pertiwi, Kartika Cahya Putra, Abhimanyu Mauliadi Widyawardhana Putra, Irfan Suharto Putri, Rezki Ananda Rizki Ramadhan, Hidayah Sidiq, Reza Nur Togar M Simatupang Wanda Listiani Wartami, Ahmad Fadel