., Muharyadi (2025) Penurunan Supply Cost Inefficiency Melalui Pemilihan Alternatif Metode Perbaikan Tangki Timbun Menggunakan Fuzzy AHP dan TOPSIS (Studi Kasus: Pertamina Terminal Tanjung Gerem - Banten). Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Industri Bahan Bakar Minyak (BBM) memainkan peran strategis dalam perekonomian global, termasuk di Indonesia. Tangki timbun BBM di Pertamina Terminal Tanjung Gerem – Banten, memiliki peranan penting dalam stabilitas pasokan energi. Namun, tantangan operasional seperti korosi, kerusakan struktural, kebocoran, dan kerusakan pelapis sering kali mengancam efisiensi operasional dan keselamatan lingkungan. Untuk mengatasi masalah ini, penelitian ini mengusulkan kombinasi metode Fuzzy AHP dan TOPSIS untuk menentukan metode perbaikan tangki timbun yang optimal. Fuzzy AHP digunakan untuk menentukan bobot kriteria secara lebih akurat melalui penanganan ketidakpastian dan subjektivitas penilaian menggunakan bilangan fuzzy. Hasil analisis Fuzzy AHP menunjukkan bahwa kriteria Safety memiliki bobot tertinggi sebesar 0.70, diikuti oleh Cost sebesar 0.17, Down Time sebesar 0.08, dan Kekuatan Hasil Perbaikan sebesar 0.05. Metode TOPSIS digunakan untuk mengevaluasi dan merangking alternatif metode perbaikan berdasarkan bobot kriteria yang telah ditentukan. Hasil analisis menunjukkan bahwa alternatif Thick Lining memiliki nilai kedekatan relatif tertinggi sebesar 0.6769, diikuti oleh Replace Bottom sebesar 0.4882, dan Thin Lining sebesar 0.3316. Alternatif Thick Lining juga memiliki jarak ke solusi ideal positif sebesar 0.0554, yang menunjukkan bahwa metode ini mendekati solusi terbaik dalam memenuhi kriteria seperti keselamatan dan durabilitas. Jarak ke solusi ideal negatif sebesar 0.1161 mengindikasikan bahwa alternatif ini jauh dari kondisi yang tidak diinginkan, sehingga menjadi pilihan terbaik dalam penilaian. Dengan diterapkannya solusi terpilih (Thick Lining) akan dapat membuat penjadwalan dan durasi perbaikan tangki timbun berjalan tepat waktu sehingga Safe Cap Tangki Timbun kembali maksimal dan dapat menurunkan Supply Cost sebesar IDR 6,37 Miliar/bulan apabila seluruh tangki timbun dapat beroperasi.
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The oil and gas industry plays a strategic role in the global economy, including in Indonesia. The fuel storage tanks at Pertamina Terminal Tanjung Gerem – Banten, with their significant storage capacity, are crucial for ensuring energy supply stability. However, operational challenges such as corrosion, structural damage, leakage, and coating deterioration pose significant risks to efficiency and environmental safety. To address these issues, this study proposes a combination of Fuzzy AHP and TOPSIS methods to determine the optimal repair method for storage tanks. Fuzzy AHP is employed to accurately assign weights to the criteria by addressing uncertainties and subjective judgments through fuzzy numbers. The Fuzzy AHP analysis revealed that the Safety criterion had the highest weight of 0.70, followed by Cost at 0.17, Down Time at 0.08, and Repair Strength at 0.05. TOPSIS was then utilized to evaluate and rank the repair method alternatives based on the weighted criteria. The analysis showed that the Thick Lining alternative had the highest relative closeness value of 0.6769, followed by Replace Bottom at 0.4882, and Thin Lining at 0.3316. The Thick Lining method also demonstrated the shortest distance to the positive ideal solution at 0.0554, indicating its alignment with the best possible outcomes in meeting criteria such as safety and durability. Additionally, its distance to the negative ideal solution was the largest, at 0.1161, emphasizing that this alternative is far from undesirable conditions, making it the most favourable choice. By implementing the selected solution (Thick Lining) it will be possible to make the scheduling and duration of storage tank repairs run on time so that the Safe Cap of the Storage Tank is restored to its maximum and can reduce Supply Cost by IDR 6.37 billion per month if all storage tanks can operate
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Fuzzy AHP, Pemeliharaan Infrastruktur, Pengambilan Keputusan Multikriteria, Tangki Timbun BBM, TOPSIS. |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA169 Reliability (Engineering) T Technology > TA Engineering (General). Civil engineering (General) > TA418.75 Corrosion-resistant materials T Technology > TA Engineering (General). Civil engineering (General) > TA418.9 Composite materials. Laminated materials. T Technology > TA Engineering (General). Civil engineering (General) > TA462 Metal Corrosion and protection against corrosion T Technology > TA Engineering (General). Civil engineering (General) > TA660.T34 Tanks. Pressure vessels |
| Divisions: | Interdisciplinary School of Management and Technology (SIMT) > 61101-Master of Technology Management (MMT) |
| Depositing User: | MUHARYADI MUHARYADI |
| Date Deposited: | 03 Feb 2025 06:36 |
| Last Modified: | 03 Feb 2025 06:36 |
| URI: | http://repository.its.ac.id/id/eprint/117932 |
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