MURTAFA, FAIZ DZAKY HIMAMUL (2026) STRATEGI PENGURANGAN DEFECT DAN EFISIENSI OPERASIONAL PADA PROSES PRODUKSI DI INDUSTRI LOGAM PRODUK TRANSFORMATOR UNTUK PT.GEMILANG JAYA PRIMA PERKASA. S2 thesis, Universitas Mercu Buana Jakarta.
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Abstract
The transformer manufacturing industry in the metal sector faces operational problems in the form of high defect rates, process waste, late deliveries, and failure to achieve daily production targets. These conditions have an impact on increasing rework, production costs, and decreasing product quality and customer satisfaction. This study aims to identify the types and causes of waste in the transformer tank production process, minimize defects, and increase production time efficiency through the application of Value Stream Mapping (VSM). The method used is descriptive qualitative with a direct observation approach and field studies. The analysis was carried out using Current State Value Stream Mapping to map the actual conditions of the production process, Fishbone Diagram to identify the root causes of defects and waste, and Future State Value Stream Mapping to design proposals for more efficient process flow improvements. The study population includes all transformer tank products for the period 2023–2024. The sample focused on the welding, assembly, NDT test, finishing, and quality control processes that have the highest defect and waste rates. The results showed that the dominant waste was in the form of waiting time, rework due to welding defects, and workflow imbalance. Implementation of Future State VSM is able to reduce non-value added activities, reduce defects, and shorten production lead times, thereby increasing operational efficiency and company competitiveness. Keywords: Value Stream Mapping, Lean Manufacturing, Waste Reduction, Operational Efficiency, Metal Industry Industri manufaktur transformator pada sektor logam menghadapi permasalahan operasional berupa tingginya tingkat defect, pemborosan proses, keterlambatan pengiriman, serta tidak tercapainya target produksi harian. Kondisi tersebut berdampak pada meningkatnya rework, biaya produksi, serta menurunnya kualitas produk dan kepuasan pelanggan. Tujuan penelitian ini untuk mengidentifikasi jenis dan penyebab pemborosan dalam proses produksi tank transformator, meminimalkan defect, serta meningkatkan efisiensi waktu produksi melalui penerapan Value Stream Mapping (VSM). Metode yang digunakan adalah deskriptif kualitatif dengan pendekatan langsung dan studi lapangan. Analisis dilakukan menggunakan Current State Value Stream Mapping untuk memetakan kondisi aktual proses produksi, Fishbone Diagram untuk mengidentifikasi akar penyebab defect dan waste, serta Future State Value Stream Mapping untuk merancang usulan perbaikan aliran proses yang lebih efisien. Populasi penelitian mencakup seluruh produk tank transformator periode 2023–2024. Sampel difokuskan pada proses welding, assembly, NDT test, finishing, dan quality control yang memiliki tingkat defect dan pemborosan tertinggi. Hasil penelitian menunjukkan meunjukan kesalahan dominan berupa waktu tunggu, rework akibat cacat pengelasan, dan ketidakseimbangan alur kerja. Implementasi Future State value stream mapping mampu menurunkan aktivitas non-value added, mengurangi defect, dan memperpendek lead time produksi sehingga meningkatkan efisiensi operasional dan daya saing perusahaan. Kata kunci : Value Stream Mapping, Lean Manufacturing, Pengurangan Pemborosan, Efisiensi Operasional, Industri Logam
| Item Type: | Thesis (S2) |
|---|---|
| NIM/NIDN Creators: | 55123120070 |
| Uncontrolled Keywords: | Value Stream Mapping, Lean Manufacturing, Pengurangan Pemborosan, Efisiensi Operasional, Industri Logam |
| Subjects: | 300 Social Science/Ilmu-ilmu Sosial > 330 Economics/Ilmu Ekonomi > 338 Production, Industrial Economics/Produksi, Ekonomi Industri > 338.2 Extraction of Mineral/Industri Pertambangan 600 Technology/Teknologi > 650 Management, Public Relations, Business and Auxiliary Service/Manajemen, Hubungan Masyarakat, Bisnis dan Ilmu yang Berkaitan |
| Divisions: | Pascasarjana > Magister Manajemen |
| Depositing User: | khalimah |
| Date Deposited: | 30 Mar 2026 01:40 |
| Last Modified: | 30 Mar 2026 01:40 |
| URI: | http://repository.mercubuana.ac.id/id/eprint/101772 |
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