WIBOWO, GIOVANA ADI (2026) ANALISIS PERHITUNGAN OVERALL EQUIPMENT EFFECTIVENESS (OEE) DAN FAILURE MODE AND EFFECT ANALYSIS (FMEA) MESIN BRACKISH WATER REVERSE OSMOSIS (BWRO) INSTALASI PENGOLAHAN AIR DEMINERALISASI. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
This study aims to measure the effectiveness of Brackish Water Reverse Osmosis (BWRO) machines using the Overall Equipment Effectiveness (OEE) method, identify dominant Six Big Losses factors causing inefficiency, and formulate priority risk mitigation strategies using Failure Mode and Effect Analysis (FMEA) at a demineralized water treatment plant. Independent variables include operational parameters (cycle time, downtime, production flow rate, water quality). Dependent variables are OEE values (comprising Availability, Performance, Quality) and Risk Priority Numbers (RPN). Six Big Losses are defined as losses due to equipment failure, setup/adjustment, minor stoppages, reduced speed, process defects, and startup yield. The research objects are three BWRO machine units (Units A, B, and C). The sample consists of total operational data (census) over a 10-month period (January–October 2025). Purposive sampling was used for machine unit selection and timeframe, alongside in-depth interviews with three expert sources (Process Engineer, Maintenance Engineer, Technical Rep) for data validation. Quantitative descriptive analysis using standard OEE formulas, Pareto analysis for Six Big Losses, and RPN calculation (Severity × Occurrence × Detection) for FMEA. The average OEE is 75.95% (Unit A: 83.84%, B: 90.98%, C: 53.04%). Dominant loss factors are Reduced Speed (49.90%) and Setup/Adjustment due to Cleaning In Place duration (39.92%). The highest risk is silica fouling on membranes with an RPN of 640. System performance has not reached world-class standards (85%) primarily due to membrane capacity degradation in Unit C. Optimization of cleaning protocols and feed water parameter control is required. Keyword : OEE, Six Big Losses, FMEA, BWRO Penelitian ini bertujuan untuk mengukur tingkat efektivitas mesin Brackish Water Reverse Osmosis (BWRO) dengan metode Overall Equipment Effectiveness (OEE), mengidentifikasi faktor dominan Six Big Losses yang menyebabkan inefisiensi, serta merumuskan strategi mitigasi risiko prioritas menggunakan Failure Mode and Effect Analysis (FMEA) pada instalasi pengolahan air demineralisasi. Variabel independen meliputi parameter operasional (waktu siklus, downtime, debit produksi, kualitas air). Variabel dependen adalah nilai OEE (terdiri dari Availability, Performance, Quality) dan nilai prioritas risiko (Risk Priority Number/RPN). Six Big Losses didefinisikan sebagai kerugian akibat kerusakan peralatan, pengaturan/penyesuaian, berhenti minor, penurunan kecepatan, produk cacat, dan yield awal. Objek penelitian adalah tiga unit mesin BWRO (Unit A, B, dan C). Data sampel berupa data operasional total (sensus) selama periode 10 bulan (Januari–Oktober 2025). Menggunakan purposive sampling untuk pemilihan unit mesin dan periode waktu, serta wawancara mendalam dengan tiga narasumber ahli (Process Engineer, Maintenance Engineer, Technical Representative) untuk validasi data. Analisis deskriptif kuantitatif menggunakan rumus OEE standar, analisis Pareto untuk Six Big Losses, dan perhitungan RPN (Severity × Occurrence × Detection) untuk FMEA. Rata-rata OEE adalah 75,95% (Unit A: 83,84%, B: 90,98%, C: 53,04%). Faktor kerugian dominan adalah Reduced Speed (49,90%) dan Setup/Adjustment akibat durasi Cleaning In Place (39,92%). Risiko tertinggi adalah fouling silika pada membran dengan RPN 640. Kinerja sistem belum mencapai standar dunia (85%) karena degradasi kapasitas membran pada Unit C. Diperlukan optimalisasi protokol cleaning dan pengendalian parameter air umpan. Kata Kunci : OEE, Six Big Losses, FMEA, BWRO
| Item Type: | Thesis (S1) |
|---|---|
| NIM/NIDN Creators: | 41622120020 |
| Uncontrolled Keywords: | OEE, Six Big Losses, FMEA, BWRO |
| Subjects: | 600 Technology/Teknologi > 670 Manufacturing/Manufaktur, Pabrik-pabrik 700 Arts/Seni, Seni Rupa, Kesenian > 750 Painting and Paintings/Seni Lukis dan Lukisan > 758 Other Subjects/Subjel Lainnya > 758.6 Industrial and Technical Subjects/Subjek Industri dan Teknik |
| Divisions: | Fakultas Teknik > Teknik Industri |
| Depositing User: | khalimah |
| Date Deposited: | 14 Feb 2026 06:37 |
| Last Modified: | 14 Feb 2026 06:37 |
| URI: | http://repository.mercubuana.ac.id/id/eprint/100958 |
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