Pengembangan Skenario Pengadaan Spare Part MO 48 KH Mesin PLTMG Berdasarkan Validasi Klasifikasi dan Analisis Multi-Kriteria

Sidiq, Muhammad Fajar (2025) Pengembangan Skenario Pengadaan Spare Part MO 48 KH Mesin PLTMG Berdasarkan Validasi Klasifikasi dan Analisis Multi-Kriteria. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Efisiensi pengelolaan spare part mesin pembangkit di remote area menjadi tantangan utama dalam menjaga keandalan sistem kelistrikan. PLTMG XYZ yang berperan strategis dalam Sistem Interkoneksi Kalimantan menghadapi permasalahan tingginya biaya pengadaan spare part OEM, keterbatasan ketersediaan material, serta panjangnya waktu pengadaan. Perkembangan teknologi Reverse Engineering membuka peluang pemanfaatan spare part Non-OEM untuk menekan biaya, namun pemilihan skenario pengadaan yang optimal berdasarkan tingkat kekritisan spare part masih memerlukan pendekatan pengambilan keputusan yang terstruktur. Penelitian ini bertujuan untuk merumuskan skenario pengadaan spare part MO 48 KH dengan pendekatan klasifikasi teknis dan metode Multi-Criteria Decision Making (MCDM). Klasifikasi spare part dilakukan berdasarkan prinsip Reliability Centered Maintenance dan divalidasi melalui metode Delphi satu putaran. Selanjutnya, metode Analytical Hierarchy Process (AHP) digunakan untuk menentukan bobot prioritas antar kriteria, di mana Operational Risk memperoleh bobot tertinggi sebesar 0,33, diikuti oleh Technical Performance (0,25) dan Cost (0,14). Bobot tersebut digunakan dalam metode Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) untuk mengevaluasi tiga alternatif skenario pengadaan. Hasil analisis menunjukkan bahwa alternatif skenario Kombinasi OEM & Non-OEM merupakan skenario terbaik dengan nilai preferensi Vi = 0,65, unggul dibanding Full OEM (Vi = 0,63) dan Full Non-OEM (Vi = 0,37). Skenario kombinasi OEM & Non-OEM ini berpotensi menghasilkan efisiensi biaya pengadaan sebesar 5,03% dibandingkan penggunaan full OEM, dengan estimasi penghematan anggaran sebesar Rp6,57 miliar untuk rencana pengadaan tahun 2025. Temuan ini sejalan dengan kondisi aktual di lapangan, di mana fleksibilitas pengadaan dan efisiensi biaya menjadi faktor dominan dalam mendukung keandalan operasional pembangkit. Model ini diharapkan dapat digunakan sebagai dasar pengambilan keputusan strategis pengadaan material di unit pembangkit serupa, serta memberikan kontribusi akademik dalam integrasi metode MCDM berbasis klasifikasi teknis spare part.
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Efficient management of power plant spare parts in remote areas presents a major challenge in maintaining the reliability of the electrical system. PLTMG XYZ, which plays a strategic role in the Kalimantan Interconnected System, faces problems related to the high cost of procuring OEM spare parts, limited material availability, and long lead times. The advancement of Reverse Engineering technology offers opportunities to utilize Non-OEM spare parts to reduce costs. However, selecting the optimal procurement scenario based on the criticality level of each spare part still requires a structured decision-making approach. This study aims to formulate a procurement scenario for MO 48 KH spare parts using a technical classification approach and multi-criteria decision-making methods. Spare parts classification was carried out based on the principles of Reliability Centered Maintenance and validated through a one-round Delphi method involving internal experts. The Analytical Hierarchy Process (AHP) was then applied to determine the priority weights of evaluation criteria, with Operational Risk receiving the highest weight (0.33), followed by Technical Performance (0.25) and Cost (0.14). These weights were used in the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) method to evaluate three alternative procurement scenarios. The analysis results indicate that the OEM & Non-OEM Combination is the most favorable scenario, achieving the highest preference value (Vi = 0.65), compared to Full OEM (Vi = 0.63) and Full Non-OEM (Vi = 0.37). This OEM & Non-OEM combination scenario potentially yields procurement cost savings of 5,03% compared to Full OEM, with an estimated budget efficiency of IDR 6,57 billion for the 2025 procurement plan. These findings are consistent with real-world conditions, where procurement flexibility and cost efficiency are key factors in supporting power plant operational reliability. This decision model is expected to serve as a strategic foundation for spare part procurement in similar power plant units and contribute academically to the application of MCDM methods based on technical spare part classification.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	spare part, MO 48 KH, OEM, Non-OEM, Delphi, AHP, TOPSIS
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA169 Reliability (Engineering) T Technology > TS Manufactures > TS161 Materials management. T Technology > TS Manufactures > TS174 Maintainability (Engineering) . Reliability (Engineering)
Divisions:	Interdisciplinary School of Management and Technology (SIMT) > 61101-Master of Technology Management (MMT)
Depositing User:	Muhammad Fajar Sidiq
Date Deposited:	02 Aug 2025 05:56
Last Modified:	02 Aug 2025 05:56
URI:	http://repository.its.ac.id/id/eprint/126048

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