Raihan Daru Bimantoro (1), Joumil Aidil (2)
General Background The steel fabrication industry requires precise production quality and reliable occupational safety to maintain competitive manufacturing performance. Specific Background In the CNC cutting process, product defects and workplace hazards remain critical issues because cutting activities involve metal processing, heat exposure, heavy components, and operator safety risks. Knowledge Gap Previous studies commonly examine Six Sigma quality control and HIRARC safety assessment separately, while integrated analysis in CNC cutting operations remains limited. Aims This study analyzes product quality through Six Sigma and identifies occupational hazards through HIRARC in the CNC cutting process. Results The findings show that cut surface defects are the most dominant defect category, reaching 53.57% of total defects. The process recorded an average DPMO of 28,745 and a sigma level of 3.41, indicating moderate process capability. HIRARC identified nine potential hazards, consisting of two high risks, five moderate risks, and two low risks. Novelty The study integrates Six Sigma and HIRARC to examine quality performance and occupational safety within one analytical framework. Implications The findings support integrated technical control, standard work procedures, ergonomic improvement, and risk control to improve productivity and operational safety simultaneously.
Highlights:
Keywords: CNC Cutting, Six Sigma, DPO (Defect per Opportunity), DPMO (Defect per Million Opportunities), HIRARC
A. Z. Fakih, N. Marlyana, and E. Mas’idah, “Pengendalian Kualitas Pada Proses Produksi Untuk Meminimalisir Cacat Produk Dengan Metode Statistical Process Control (SPC) dan Failure Mode and Effect Analysis (FMEA),” Jurnal Ilmiah Sultan Agung, Sep. 2023. [Online]. Available: https://jurnal.unissula.ac.id/index.php/JIMU/article/view/33582
O. Sari, F. Munawaroh, A. Saputra, R. Situmorang, and I. Irfandi, “Implementasi Lean Construction Tools Pada Proyek Pembangunan Jalan Tol Balikpapan–Samarinda,” Jurnal RAB Construction Research, vol. 1, pp. 79–88, 2022, doi: 10.36341/racic.v7i1.2512.
A. F. Shiyamy, S. Rohmat, and A. Sopian, “Analisis Pengendalian Kualitas Produk Dengan Statistical Process Control,” Komitmen: Jurnal Ilmiah Manajemen, vol. 2, no. 2, pp. 32–45, Oct. 2021.
G. Smarandana, A. Momon, and J. Arifin, “Penilaian Risiko K3 Pada Proses Pabrikasi Menggunakan Metode Hazard Identification, Risk Assessment and Risk Control (HIRARC),” Jurnal INTECH Teknik Industri Universitas Serang Raya, vol. 7, no. 1, pp. 56–62, Jun. 2021, doi: 10.30656/intech.v7i1.2709.
A. Zainul, I. Syahfudin, M. Muslimin, and I. B. Efendi, “Persepsi Hubungan Keselamatan dan Kesehatan Kerja Terhadap Peningkatan Kualitas Produk di Perusahaan,” vol. 3, no. 4, pp. 552–560, 2025. [Online]. Available: https://ojs.smkmerahputih.com/index.php/jimu/article/view/1115
S. L. Rohmah, V. Alvionita, L. F. Nainggolan, and W. Mulyadi, “Evaluation of Production Risks Using the Six Sigma Method and Failure Mode and Effect Analysis (FMEA) in Quality Control at PT Busana Indah Global,” in Proceedings of the International Conference on Business and Technology, pp. 97–117, 2024, doi: 10.2991/978-94-6463-492-1_10.
A. S. Mahendra and I. Iftadi, “Designing Risk Control Strategies Using HIRARC-Based Risk Management to Comply Occupational Health and Safety Management System Standards in Manufacturing Activities,” Teknoin, vol. 30, no. 1, pp. 9–20, Jun. 2025, doi: 10.20885/teknoin.vol30.iss1.art2.
A. S. S. Abdullah, F. A. S. Zalita, M. M. N. Elshibani, and N. S. E. Alshamili, “Improving Traditional Cutting Processes by Using CNC Machines,” Azzaytuna University Journal, vol. 52, pp. 442–454, Nov. 2024.
F. S. Hillier and G. J. Lieberman, Six Sigma for Green Belts and Champions, 10th ed. New York, NY, USA: McGraw-Hill Education, 2020. [Online]. Available: https://www.pearson.com/en-us/subject-catalog/p/six-sigma-for-green-belts-and-champions/P200000003481
X. Zhao, Z. Wei, Y. Gao, and P. Yin, “Laboratory Risk Assessment Based on SHELL-HACCP-Cloud Model,” Sustainability, vol. 15, no. 24, pp. 1–18, 2023, doi: 10.3390/su152416590.
D. Wardana et al., “Implementasi Keselamatan dan Kesehatan Kerja (K3) Pada Pekerjaan Mesin CNC Menggunakan Metode JSA dan HIRARC,” Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety), vol. 10, no. 2, pp. 145–156, Dec. 2023, doi: 10.46447/ktj.v10i2.562.
V. Monoarfa and R. N. B. Miolo, “Penerapan Keselamatan dan Kesehatan Kerja (K3) Menggunakan Metode HIRARC Pada UMKM Pabrik Tahu,” Mopolayio: Jurnal Pengabdian Ekonomi, vol. 2, 2022, doi: 10.29303/abdiinsani.v11i4.2147.
N. S. Khunaifi and M. T. Safirin, “Quality Control of Paint Tube Products Using Six Sigma and FMEA Methods,” Journal La Multiapp, vol. 6, no. 1, pp. 149–162, Feb. 2025, doi: 10.37899/journallamultiapp.v6i1.1852.
M. Rifaldi and W. Sudarwati, “Penerapan Metode Six Sigma dan FMEA Sebagai Usaha untuk Mengurangi Cacat Pada Produk Bracket,” in Seminar Nasional Sains dan Teknologi (SEMNASTEK), pp. 1–9.
P. Giananta, J. Hutabarat, and Soemanto, “Analisa Potensi Bahaya dan Perbaikan Sistem Keselamatan dan Kesehatan Kerja Menggunakan Metode HIRARC di PT Boma Bisma Indra,” Jurnal Valtech (Jurnal Mahasiswa Teknik Industri), vol. 3, no. 2, pp. 106–115, 2020, doi: 10.36040/valtech.v3i2.2761.
A. Shalahuddin, W. Darul, and P. Ely, “Faktor Penyebab Kebocoran Cylinder Liner Generator No. 3 Pada MV Meratus Kelimutu,” pp. 19–30, 2024. [Online]. Available: https://repository.pip-semarang.ac.id/2643/
M. Nur, V. Valentino, R. K. Sari, and A. A. Karim, “Analisa Potensi Bahaya Kecelakaan Kerja Terhadap Pekerja Menggunakan Metode Hazard Identification, Risk Assessment and Risk Control (HIRARC) Pada Perusahaan Aspal Beton,” Jurnal Teknologi dan Manajemen Industri Terapan (JTMIT), vol. 2, no. 3, pp. 150–158, 2023. [Online]. Available: https://ejournal.itn.ac.id/index.php/valtech/article/view/2085
Y. R. B. Sitepu and J. N. Simanungkalit, “Identifikasi Bahaya, Penilaian Risiko, dan Pengendalian Risiko Menggunakan Analisis Metode HIRARC,” Jurnal Penelitian Perawat Profesional, vol. 2, no. 4, pp. 495–504, Nov. 2020. [Online]. Available: http://jurnal.globalhealthsciencegroup.com/index.php/JPPP