Ren, Renaldi (2026) Penerapan Metode Buit in Quality (BIQ) Untuk Mengurangi Kelolosan Core Reject dan Repair ke Proses Produksi Lanjut di PT. BUMM. Tugas Akhir (S1) - thesis, Universitas Bakrie.
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Abstract
The high rate of defective core products (core rejects and core repairs) escaping to subsequent casting processes at PT BUMM reached an average of 3.97%, exceeding the company’s target of 1.00%. This condition reduces production efficiency and increases the risk of product failure. This study aims to identify the root causes of the problem and implement the Built-In Quality (BIQ) method to reduce the escape rate. Through the Fishbone Diagram and 5-Why Analysis, the root causes of the problem were identified as originating from human factors (low quality awareness), methods (lack of work standardization and collective final inspection), machines/tooling (suboptimal corebox design for PC 137 parts), and the environment (inadequate lighting). Improvements were implemented through BIQ pillars, including work standardization, visual management, per-piece self-inspection, corebox channel modification, additional lighting, and the implementation of stop-the-line authority. The results of the Two-Sample T-Test statistical analysis showed a value of [insert test result/p-value], indicating that the implementation of BIQ significantly reduced the escape rate from 4.16% to 0.64% and achieved the target of below 1.00%, with a stable production process. Keywords: Built-In Quality (BIQ), Quality Control, Core Reject, Core Repair, Metal Casting, Work Standardization.
| Item Type: | Thesis (Tugas Akhir (S1) - ) |
|---|---|
| Uncontrolled Keywords: | Built-In Quality (BIQ), Pengendalian Kualitas, Core Reject, Core Repair, Pengecoran Logam, Standarisasi Kerja. |
| Subjects: | Industrial & Manufacturing Engineering Industrial & Manufacturing Engineering > Quality control (Pengendalian mutu / Quality Control) Thesis > Thesis (S1) |
| Divisions: | Fakultas Teknik dan Ilmu Komputer > Program Studi Teknik Industri |
| Depositing User: | Renaldi Renaldi |
| Date Deposited: | 18 Sep 2026 04:12 |
| Last Modified: | 18 Sep 2026 04:12 |
| URI: | https://repository.bakrie.ac.id/id/eprint/14904 |
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