Qasthalani, Muhammad Rafi (2026) Gate-To-Gate-Assembly-To-Packaging Life Cycle Assessment Sub-Proses Remanufaktur Komponen Mesin Alat Berat: Analisis Potensi Dampak Lingkungan Pada Tingkat Proses. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Industri remanufaktur alat berat meskipun diklaim menghemat energi, tetap menggunakan bahan bakar, listrik, pelumas, dan bahan pendukung yang dapat menghasilkan emisi dan menimbulkan potensi dampak lingkungan. Penelitian ini bertujuan mengukur dampak lingkungan setiap tahapan proses, mengidentifikasi titik kritis, serta menganalisis faktor utama yang memengaruhi emisi pada remanufaktur engine alat berat. Penelitian dilakukan di PT Komatsu Remanufacturing Asia pada engine SAA12V140E-3, SAA6D170E-5, dan SAA6D140E-6 menggunakan pendekatan gate-to-gate Life Cycle Assessment. Batas sistem mencakup assembly, global leak test, dynamometer test, final painting and completion, hingga packaging. Unit fungsional yang digunakan adalah satu unit engine masing – masing model hasil remanufaktur. Data dimodelkan menggunakan SimaPro dengan metode ReCiPe 2016. Hasil penelitian menunjukkan total global warming potential sebesar 1.007,087 kg CO₂-eq untuk SAA12V140E-3, 675,597 kg CO₂-eq untuk SAA6D170E-5, dan 492,039 kg CO₂-eq untuk SAA6D140E-6. Dynamometer test menjadi hotspot utama dengan kontribusi 54,29–65,71%, diikuti assembly. Perbedaan antar-engine dipengaruhi oleh kapasitas daya, massa, konsumsi bahan bakar, listrik, pelumas, dan profil pengujian. Normalisasi berdasarkan massa dan rated output menunjukkan bahwa engine dengan GWP absolut tertinggi tidak selalu memiliki intensitas dampak tertinggi. Analisis sensitivitas menunjukkan bahwa pengurangan bahan bakar 20% menurunkan GWP sebesar 3,701–5,714%, pengurangan listrik 20% sebesar 8,177–10,937%, dan penggunaan listrik rendah karbon sebesar 38,1–50,9%.
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Heavy-equipment remanufacturing, even though claimed to be energy friendly, still uses fuel, electricity, lubricants, and supporting materials that may cause environmental impacts. This study quantifies the environmental impact of each process stage, identifies the main hotspots, and analyzes key emission drivers in heavy-equipment engine remanufacturing. The study was conducted at PT Komatsu Remanufacturing Asia on SAA12V140E-3, SAA6D170E-5, and SAA6D140E-6 engines using a gate-to-gate Life Cycle Assessment approach. The system boundary covers assembly, global leak testing, dynamometer testing, final painting and completion, and packaging. The functional unit is one remanufactured engine. Inventory data were modeled in SimaPro using ReCiPe 2016. The total Global Warming Potential was 1,007.087 kg CO₂-eq for SAA12V140E-3, 675.597 kg CO₂-eq for SAA6D170E-5, and 492.039 kg CO₂-eq for SAA6D140E-6. The dynamometer test was the main hotspot, contributing 54.29–65.71%, followed by assembly. Differences among engines were influenced by rated output, mass, fuel and electricity use, lubricant use, and testing profile. Normalization by mass and rated output showed that the engine with the highest absolute GWP did not always have the highest impact intensity. A 20% reduction in fuel and electricity consumption decreased total GWP by 3.701–5.714% and 8.177–10.937%, respectively, while low-carbon electricity reduced it by 38.1–50.9%.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Life cycle assessment, Remanufaktur, Alat Berat, Gate-to-gate, Dampak Lingkungan, Pajak Karbon. Life cycle assessment, Remanufacturing, Heavy Equipment, Gate-to-gate, Environmental Impact , Carbon Tax. |
| Subjects: | H Social Sciences > HF Commerce > HF5415.155 Product life cycle. |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Industrial Engineering > 26201-(S1) Undergraduate Thesis |
| Depositing User: | Muhammad Rafi Qasthalani |
| Date Deposited: | 31 Jul 2026 04:28 |
| Last Modified: | 04 Aug 2026 03:06 |
| URI: | http://repository.its.ac.id/id/eprint/140485 |
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