Evaluasi Pemilihan Supplier Castable Berdasarkan Kriteria Sustainable Supply Chain Management Menggunakan Metode Fuzzy Analytical Hierarchy Process (FAHP) dan TOPSIS (Studi Kasus: PT XYZ)

Utama, Mohchamad Airlangga Bima (2025) Evaluasi Pemilihan Supplier Castable Berdasarkan Kriteria Sustainable Supply Chain Management Menggunakan Metode Fuzzy Analytical Hierarchy Process (FAHP) dan TOPSIS (Studi Kasus: PT XYZ). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

PT XYZ berkomitmen terhadap keberlanjutan melalui Sustainability Roadmap 2030 termasuk di dalam proses pengadaan supplier maintenance, repair and operations (MRO). Salah satu material krusial adalah castable refractory yang digunakan untuk pelapis tahan panas yang melindungi struktur penting seperti plat pada kiln, preheater, dan cooler dari kerusakan akibat suhu ekstrem. Dalam praktik yang berjalan saat ini, proses pemilihan supplier castable di PT XYZ masih dilakukan dengan pendekatan konvensional. Evaluasi teknis lebih banyak mengandalkan reputasi supplier, ketersediaan alat, pengalaman kerja, penawaran harga, dan lead time, tanpa memperhitungkan secara eksplisit kontribusi supplier terhadap aspek keberlanjutan. Hal ini mengindikasikan belum adanya transfer knowledge yang optimal terkait prinsip keberlanjutan kepada unit yang menangani pengadaan. Hal ini tentu bertentangan dengan komitmen Sustainability Roadmap 2030 PT XYZ. Oleh karena itu, penelitian tentang sustainability supplier dalam mendukung sustainability di PT XYZ menjadi sangat relevan. Penelitian ini memiliki tujuan untuk mengevaluasi kinerja supplier berdasarkan aspek-aspek sustainable (lingkungan, ekonomi, sosial) menggunakan metode cut-off point untuk pemilihan sub kriteria, Fuzzy Analytical Hierarchy Process (FAHP) untuk pemberian bobot sub kriteria, serta (TOPSIS) Technique for Order Preference by Similarity to Ideal Solution digunakan untuk pemeringkatan supplier berdasarkan sub kriteria yang telah ditentukan. Hasil penelitian menunjukkan supplier S3 yaitu SUPPLIER C memperoleh nilai tertinggi dengan nilai preferensi adalah sebesar 0,9784 sehingga menjadi prioritas supplier terpilih. Kemudian supplier dengan kode S2 yaitu SUPPLIER B dengan nilai preferensi 0,4682, disusul oleh S5 yaitu SUPPLIER E dengan nilai preferensi 0,4097. Kemudian dua yang terakhir adalah S4 yaitu SUPPLIER D dan S1 yaitu SUPPLIER A dengan nilai preferensi masing-masing adalah 0,2740 dan 0,0166. Kemudian dilakukan analisis sensitivitas untuk menguji tingkat kekokohan atau robust dengan 5 skenario dan menunjukkan SUPPLIER C tetap berada di peringkat pertama. Analisis sensitivitas lebih dalam dilakukan dan menunjukkan bahwa subkriteria E21 (Kualitas Produksi) dan S12 (Insiden kesehatan dan keselamatan kerja) merupakan subkriteria paling sensitif. Hasil ini dapat dijadikan dasar dalam pengambilan keputusan pemilihan supplier castable yang mendukung strategi keberlanjutan perusahaan. ========================================================================================================================================
PT XYZ is committed to sustainability through its Sustainability Roadmap 2030, including in the procurement process for maintenance, repair, and operations (MRO) suppliers. One of the critical materials involved is castable refractory, a heat-resistant lining used to protect essential structures such as plates in the kiln, preheater, and cooler from extreme temperatures. In current practice, the selection of castable suppliers at PT XYZ is still carried out using a conventional approach. Technical evaluations mainly rely on supplier reputation, equipment availability, work experience, pricing, and lead time, without explicitly considering the supplier’s contribution to sustainability aspects. This indicates a lack of optimal knowledge transfer regarding sustainability principles to the procurement unit, which contradicts the company’s Sustainability Roadmap 2030 commitment. Therefore, research on sustainable suppliers in supporting corporate sustainability is highly relevant. This study aims to evaluate supplier performance based on sustainability aspects (environmental, economic, and social) using the cut-off point method for sub-criteria selection, Fuzzy Analytical Hierarchy Process (FAHP) for weighting, and the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) for supplier ranking. The results show that supplier S3 (SUPPLIER C) achieved the highest preference score of 0.9784 and was selected as the top priority supplier. This was followed by supplier S2 (SUPPLIER B) with a score of 0.4682 and S5 (SUPPLIER E) with a score of 0.4097. The last two were S4 (SUPPLIER D) and S1 (SUPPLIER A) with preference scores of 0.2740 and 0.0166, respectively. A sensitivity analysis with five scenarios was conducted to test the robustness of the results, showing that SUPPLIER C consistently ranked first. Further analysis revealed that the most sensitive sub-criteria were E21 (Production Quality) and S12 (Health and Safety Incidents). These findings can serve as a basis for making castable supplier selection decisions that support the company’s sustainability strategy.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	FAHP, TOPSIS, Keberlanjutan, Supplier, Evaluasi, Castable
Subjects:	H Social Sciences > HD Industries. Land use. Labor > HD30.23 Decision making. Business requirements analysis.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Industrial Engineering > 26201-(S1) Undergraduate Thesis
Depositing User:	Mohchamad Airlangga Bima Utama
Date Deposited:	29 Jul 2025 04:22
Last Modified:	29 Jul 2025 04:22
URI:	http://repository.its.ac.id/id/eprint/123239

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