Analisis Potensi Dampak Lingkungan Subproses Remanufaktur Mesin Alat Berat Menggunakan Life Cycle Assessment (LCA) Pada PT Komatsu Remanufacturing Asia

Siregar, Farhan Syarif (2026) Analisis Potensi Dampak Lingkungan Subproses Remanufaktur Mesin Alat Berat Menggunakan Life Cycle Assessment (LCA) Pada PT Komatsu Remanufacturing Asia. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Industri alat berat berperan penting dalam mendukung sektor konstruksi dan pertambangan, tetapi aktivitas manufaktur dan pemulihan komponennya tetap menimbulkan potensi dampak lingkungan. Remanufaktur dapat memperpanjang umur pakai komponen sekaligus mengurangi kebutuhan material baru. Penelitian ini bertujuan menganalisis potensi dampak lingkungan pada subproses remanufaktur engine alat berat di PT Komatsu Remanufacturing Asia menggunakan pendekatan process-based Life Cycle Assessment (LCA). Ruang lingkup penelitian menggunakan pendekatan gate-to-gate yang mencakup pre-washing, disassembly, machining, dan engine washing. Objek penelitian terdiri atas engine SAA12V140E-3, SAA6D170E-5, dan SAA6D140E-5. Penilaian dampak dilakukan menggunakan SimaPro dengan metode ReCiPe 2016 Midpoint Hierarchist pada 18 kategori dampak. Variasi kondisi core dianalisis melalui skenario, sedangkan analisis sensitivitas dilakukan terhadap sumber listrik dan konsumsi bahan kimia. Implikasi ekonomi diestimasi dengan mengonversi nilai Global Warming Potential (GWP) menjadi pajak karbon. Hasil penelitian menunjukkan bahwa machining menjadi hotspot utama akibat konsumsi listrik yang tinggi, sedangkan engine washing menjadi kontributor berikutnya karena penggunaan energi dan bahan kimia. Hasil normalisasi menunjukkan bahwa human carcinogenic toxicity merupakan kategori dampak paling menonjol. Skenario dengan tingkat replace lebih tinggi menghasilkan dampak gate-to-gate yang lebih rendah karena kebutuhan machining dan engine washing berkurang, tetapi dampak produksi serta pengiriman part baru belum diperhitungkan. Perubahan sumber listrik memberikan pengaruh besar terhadap hasil LCIA, sedangkan perubahan konsumsi bahan kimia sebesar ±20% memberikan pengaruh relatif kecil. Hasil penelitian dapat digunakan sebagai dasar penentuan prioritas pengendalian dampak lingkungan pada subproses remanufaktur engine alat berat.
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The heavy equipment industry plays an important role in supporting the construction and mining sectors; however, manufacturing and component recovery activities continue to generate potential environmental impacts. Remanufacturing can extend component service life while reducing the need for new materials. This study aims to analyze the potential environmental impacts of heavy equipment engine remanufacturing subprocesses at PT Komatsu Remanufacturing Asia using a process-based Life Cycle Assessment (LCA) approach. The study applies a gate-to-gate system boundary covering pre-washing, disassembly, machining, and engine washing. The analyzed objects consist of the SAA12V140E-3, SAA6D170E-5, and SAA6D140E-5 engines. Environmental impact assessment was conducted using SimaPro with the ReCiPe 2016 Midpoint Hierarchist method across 18 impact categories. Variations in core condition were evaluated through scenario analysis, while sensitivity analysis was performed for electricity sources and chemical consumption. The economic implications were estimated by converting Global Warming Potential (GWP) results into carbon tax values. The results show that machining is the main environmental hotspot due to its high electricity consumption, while engine washing is the next largest contributor because of its energy and chemical use. The normalization results indicate that human carcinogenic toxicity is the most prominent impact category. Scenarios with higher replacement rates produce lower gate-to-gate impacts because machining and engine washing requirements are reduced; however, the impacts of new part production and transportation are not included. Changes in electricity sources have a substantial influence on the LCIA results, whereas a ±20% change in chemical consumption has a relatively limited effect. The findings can support the prioritization of environmental impact reduction measures in heavy equipment engine remanufacturing subprocesses.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	LCA, Remanufaktur, Dampak Lingkungan, Pajak Karbon LCA, Remanufacturing, Environmental Impact, Carbon Tax
Subjects:	H Social Sciences > HF Commerce > HF5415.155 Product life cycle.
Divisions:	Faculty of Industrial Technology > Industrial Engineering > 26201-(S1) Undergraduate Thesis
Depositing User:	Farhan Syarif Siregar
Date Deposited:	31 Jul 2026 04:04
Last Modified:	31 Jul 2026 04:04
URI:	http://repository.its.ac.id/id/eprint/140351

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