AZHAR, RAHMA FAUZIA (2025) USULAN PENGENDALIAN KUALITAS ENGINE ROOM MAIN MENGGUNAKAN SIX SIGMA (STUDI KASUS: PT XYZ). S1 thesis, FAKULTAS TEKNIK UNIVERSITAS SULTAN AGENG TIRTAYASA.
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Abstract
PT XYZ is an automotive spare parts company that manufactures wiring harnesses. PT XYZ discovered the highest number of product defects on conveyor A10 in the main engine room production area. There are nine types of defects found on conveyor A10, namely cross circuit, dimensional, taping defect, not click, direction, orientation, TPO, missing, and damage. This research aims to pinpoint the most common types of defects, ascertain the defects per million opportunities (DPMO) and sigma value, determine the root causes of defects, and suggest strategies for enhancement to elevate the main engine room product. Within the context of this study, the Six Sigma methodology was applied. Based on the defect data, the dominant defects were cross circuit defects and dimensional defects. The DPMO figure was determined to be 888,889, corresponding to a sigma level of 4.601. Cross circuit defects were caused by human factors and methods. Meanwhile, dimensional defects arise due to human, material, and method factors. Improvement suggestions for cross circuit defects include adding rest periods, conducting objective evaluations of human and machine work capacity, actively monitoring operators during double-checking, adding checklists, and planning to create larger material names and codes. The proposed improvements for dimensional defects include adding rest periods, conducting objective evaluations of human and machine work capacity, ensuring strict supervision of operators and issuing warnings, conducting quality inspections before the assembly process, and reorganizing the layout of material storage.
| Item Type: | Thesis (S1) | |||||||||
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| Additional Information: | PT XYZ merupakan sebuah perusahaan sparepart mobil yang memproduksi wiring harness. PT XYZ menemukan masalah produk defect tertinggi yang terdeteksi di conveyor A10 produksi engine room main. Jenis defect yang ditemukan pada conveyor A10 terdapat 9 jenis defect, yaitu cross circuit, dimensi, taping defect, not click, direction, orientasi, TPO, missing, dan damage. Tujuan penelitian ini yaitu mengetahui jenis defect tertinggi, menentukan nilai DPMO dan nilai sigma, mengetahui penyebab terjadinya defect, memberikan usulan dan rencana perbaikan untuk meningkatkan kualitas produk engine room main. Penyelesaian masalah dalam penelitian ini diterapkan dengan metode six sigma. Berdasarkan data defect ditemukan defect dominan yaitu defect cross circuit dan defect dimensi. Nilai DPMO sebesar 888,889 dengan nilai sigma sebesar 4,601. Defect cross circuit disebabkan oleh faktor manusia dan metode. Sementara itu, defect dimensi muncul karena faktor manusia, material, dan metode. Usulan perbaikan pada defect cross circuit yaitu dengan penambahan jam istirahat, melakukan evaluasi kapasitas kerja manusia dan mesin secara objektif, memantau secara aktif saat operator melakukan double checking dan menambahkan checksheet formulir serta merencanakan pembuatan nama dan kode material lebih besar. Usulan perbaikan untuk defect dimensi meliputi penambahan jam istirahat, melakukan evaluasi kapasitas kerja manusia dan mesin secara objektif, memastikan adanya pengawasan ketat terhadap operator dan pemberian teguran, melakukan inspeksi pengujian kualitas sebelum proses perakitan serta menata ulang tata letak layout penyimpanan material. | |||||||||
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | |||||||||
| Divisions: | 03-Fakultas Teknik > 26201-Jurusan Teknik Industri | |||||||||
| Depositing User: | Rahma Fauzia Azhar | |||||||||
| Date Deposited: | 29 Oct 2025 01:20 | |||||||||
| Last Modified: | 29 Oct 2025 01:20 | |||||||||
| URI: | http://eprints.untirta.ac.id/id/eprint/55615 |
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