Bimantoro, Fitroh Akbar and Nugroho, Andung Jati (2025) ANALISIS PENGENDALIAN KUALITAS PRODUK DENGAN MENGGUNAKAN METODE FAULT TREE ANALYSIS (FTA) DAN FAILURE MODE AND EFFECT ANALYSIS (FMEA) PADA CV. JASA KARYA. Tugas Akhir thesis, University of Technology Yogyakarta.
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Abstract
ABSTRAK Meningkatnya daya beli masyarakat mendorong perusahaan untuk memastikan produk yang dihasilkan memiliki kualitas tinggi agar dapat memenuhi ekspektasi pasar. CV. Jasa Karya, sebagai produsen paving block, menghadapi tantangan dalam menjaga kualitas produknya, terutama dalam mengurangi tingkat kecacatan seperti retak, pecah, dan hancur. Pada bulan November. Penelitian ini bertujuan untuk menganalisis dan meningkatkan sistem pengendalian kualitas dengan menerapkan metode Fault Tree Analysis (FTA) dan Failure mode and Effect Analysis (FMEA) guna mengidentifikasi akar penyebab kecacatan serta menyusun strategi perbaikan yang efektif. Metode FTA digunakan untuk menggambarkan hubungan sebab akibat dari berbagai faktor yang dapat menyebabkan kegagalan dalam proses produksi, sementara FMEA diterapkan untuk mengidentifikasi potensi kegagalan, menilai dampaknya, dan menentukan langkah mitigasi berdasarkan Risk priority number (RPN). Hasil penelitian menunjukkan bahwa kecacatan produk di CV. Jasa Karya disebabkan oleh beberapa faktor utama, termasuk ketidakseimbangan komposisi bahan baku, ketidaksempurnaan dalam pengoperasian mesin, serta kurangnya pengawasan selama proses produksi. Dari analisis FMEA, ditemukan bahwa V-Belt putus dan pencampuran admixture beton yang tidak sesuai memiliki RPN tertinggi sebesar 60, sehingga menjadi prioritas utama dalam perbaikan. Selain itu, kesalahan operator memiliki RPN 48, kerusakan mesin Mixer memiliki RPN 36, dan kerusakan mesin diesel memiliki RPN 16, yang menjadikannya prioritas perbaikan selanjutnya. Pengolahan data dalam penelitian ini dilakukan melalui tahapan pengumpulan data produksi, identifikasi jenis kecacatan, analisis penyebab menggunakan FTA, serta perhitungan RPN melalui FMEA. Data diperoleh dari observasi langsung, wawancara dengan tim produksi, serta pencatatan jumlah produk cacat selama periode penelitian. Berdasarkan hasil analisis, penelitian ini merekomendasikan beberapa strategi perbaikan, seperti optimalisasi proses pencampuran bahan baku, peningkatan pengawasan pada tahapan pencetakan dan pengeringan, serta pelatihan operator agar lebih memahami standar operasional prosedur (SOP). Implementasi strategi ini diharapkan dapat mengurangi tingkat kecacatan produk, meningkatkan efisiensi produksi, serta memperkuat daya saing CV. Jasa Karya dalam industri konstruksi. Kata Kunci : Pengendalian Kualitas, Fault Tree Analysis (FTA), Failure mode and Effect Analysis (FMEA), Paving block, Risk priority number (RPN). ABSTRACT The increasing purchasing power of the community encourages companies to ensure that their products are of high quality to meet market expectations. CV. Jasa Karya, a paving block manufacturer, faces challenges in maintaining the quality of its products, particularly in reducing defects such as cracks, breaks, and crumbles. This study aims to analyze and improve the quality control system by applying Fault Tree Analysis (FTA) and Failure Mode and Effects Analysis (FMEA) methods to identify the root causes of defects and develop effective improvement strategies. The FTA method describes the causal relationships among various factors that can lead to failures in the production process. At the same time, FMEA identifies potential failures, assesses their impacts, and determines mitigation steps based on the Risk Priority Number (RPN). The study results indicate that product defects at CV Jasa Karya are attributed to several primary factors, including an imbalance in the composition of raw materials, imperfections in machine operation, and insufficient supervision during production. The FMEA analysis revealed that broken V-belts and improper mixing of concrete admixture had the highest RPN of 60, making them the top priority for improvement. Furthermore, operator error has an RPN of 48, Mixer engine damage has an RPN of 36, and diesel engine damage has an RPN of 16, highlighting the need for continued focus on improvement in these areas. This study involved data processing, which included collecting production data, identifying types of defects, analyzing causes using FTA, and calculating RPN through FMEA. The data was collected through direct observation, interviews with the production team, and tracking the number of defective products during the study period. According to the results of the analysis, this study suggests various strategies for improvement. These include optimizing the raw material mixing process, increasing supervision during molding and drying, and training operators to understand standard operating procedures (SOPs) better. It is anticipated that putting this strategy into action will decrease product defects, improve production efficiency, and enhance the competitiveness of CV. Jasa Karya is involved in the construction industry. Keywords: Quality Control, Fault Tree Analysis (FTA), Failure mode and Effect Analysis (FMEA), Paving block, Risk priority number (RPN).
| Item Type: | Thesis (Skripsi, Tugas Akhir or Kerja Praktek) (Tugas Akhir) |
|---|---|
| Subjects: | T Technology > TS Manufactures |
| Divisions: | Fakultas Sains dan Teknologi > S1 Teknik Industri |
| Depositing User: | Kaprodi S1 Teknik Industri UTY |
| Date Deposited: | 28 Oct 2025 07:15 |
| Last Modified: | 28 Oct 2025 07:15 |
| URI: | http://eprints.uty.ac.id/id/eprint/19349 |
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