Ramadhan, Rahandi Aliftyant (2026) ANALISIS PEMBOROSAN PROSES PELLETING DENGAN METODE LEAN SIX SIGMA DAN 5 WHYS DI PT. XYZ. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
The animal feed industry is required to produce products with consistent quality and efficient production processes. PT. XYZ still faces issues related to waste and product defects in the pelleting process, particularly in the production of BR2 pellets. Based on production data from March to August 2025, total output reached 74391.52 tons with total defective products amounting to 352.92 tons. Quality measurement using the Six Sigma method showed an average Defects Per Million Opportunities (DPMO) of 1,186.02 with an actual sigma level of ±4.56, indicating opportunities for further improvement to reduce process variation. This study aims to identify dominant types of waste, analyze the root causes of waste and product defects, and develop improvement proposals. The method applied was Lean Six Sigma using the DMAIC (Define, Measure, Analyze, Improve, Control) approach. The analytical tools included Value Stream Mapping (VSM), Process Activity Mapping (PAM), VALSAT, Pareto Diagram, Fishbone Diagram, and Root Cause Analysis using the 5 Whys method. The results show that the dominant wastes were defect, waiting, overprocessing, and inventory, with an initial Process Cycle Efficiency (PCE) of 52.07%. Improvement proposals focused on stabilizing process parameters through baseline settings and an operating window, implementing monitoring check sheets, controlling critical machine components, standardizing the cooling process, applying preventive fines control, and developing troubleshooting guidelines. The proposed improvements increased process efficiency, raising the PCE to 55.83% and improving pellet quality consistency
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | T Technology > T Technology (General) T Technology > T Technology (General) > T55.4-60.8 Industrial engineering. Management engineering |
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| Divisions: | Faculty of Engineering > Departement of Industrial Engineering | ||||||||
| Depositing User: | Rahandi Aliftyant Ramadhan | ||||||||
| Date Deposited: | 24 Feb 2026 07:43 | ||||||||
| Last Modified: | 24 Feb 2026 07:43 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/49663 |
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