Dwirahardja, Mas Tangguh Afritza Satya (2025) Analisis Pada Pengelasan Structural Plate Menggunakan Metode Six Sigma dan Kaizen Untuk Mengurangi Defect di PT XYZ. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
The welding process on structural plates plays an important role in the construction of offshore platforms, where the quality of the joint determines the strength and reliability of the structure. But in reality, there are still various types of welding defects such as Lack of Fusion (LOF), Lack of Penetration (LOP), and Excessive Spatter Inclusion (ESI) which indicate that zero defect conditions have not been achieved. This problem requires a systematic and data-based approach, so this research proposes the application of the Six Sigma method with the DMAIC approach and continuous improvement using the Kaizen concept. The results showed that the total weld defects during April 2024 to March 2025 reached 24,584 mm with a DPMO value of 36,399 and a sigma level of 3,34. The dominant defect type is LOF at 54,5%. Evaluation through the control map shows that there is still data that is outside the control limits, which indicates the need for consistent implementation of the proposal. Kaizen improvement proposals focused on equipment maintenance, improving operator skills, material inventory, and standardizing work procedures. Thus, the combination of Six Sigma and Kaizen Five Step Plan (5S) proved to be effective in reducing welding defects and promoting better and sustainable production process stability at PT XYZ.
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | H Social Sciences > HD Industries. Land use. Labor > HD62.15 Total Quality Management | ||||||||
| Divisions: | Faculty of Engineering > Departement of Industrial Engineering | ||||||||
| Depositing User: | Mas Tangguh Afritza Satya D | ||||||||
| Date Deposited: | 07 Jul 2025 03:32 | ||||||||
| Last Modified: | 07 Jul 2025 03:32 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/38782 |
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