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ANALISIS DAN USULAN PENINGKATAN EFEKTIVITAS MESIN CNC MILLING MENGGUNAKAN PENDEKATAN OVERALL EQUIPMENT EFFECTIVENESS (OEE): CNC Milling, OEE, Produktivitas, Fishbone Diagram, Efektivitas Mesin Ganda Sirait; Arsyad Sumantika
Prosiding Vol 8 No 1 (2026): SNISTEK
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/psnistek.v8i1.11745

Abstract

Increasing competition in the manufacturing industry requires companies to improve productivity and machine utilization effectiveness. CNC Milling machines play a crucial role in manufacturing processes due to their ability to produce high-precision components. Therefore, machine performance and reliability significantly affect production efficiency. Common problems such as downtime, reduced operating speed, and product defects can decrease machine effectiveness.  This study aims to analyze the effectiveness level of CNC Milling machines using the Overall Equipment Effectiveness (OEE) method and identify factors causing low effectiveness through Fishbone Diagram analysis. Data were collected from production and maintenance records during January–March 2025. OEE calculations were conducted based on three main indicators: Availability Rate, Performance Rate, and Quality Rate. The results show that the average Availability Rate reached 88.76%, Performance Rate 83.24%, and Quality Rate 97.45%, resulting in an OEE value of 71.95%. This value is below the world-class standard of 85%. Fishbone Diagram analysis revealed that the major causes of low effectiveness originated from human, machine, method, material, and environmental factors. Improvement proposals include implementing preventive maintenance programs, enhancing operator competencies, improving operational procedures, and strengthening production monitoring systems.
ANALISIS PENGENDALIAN KUALITAS PROSES PHOSPHATING PADA PT CITRA TUBINDO TBK Bagas Micola; Arsyad Sumantika
Computer Science and Industrial Engineering Vol 14 No 01 (2026): Comasie Vol 14 No 1
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v14i01.11063

Abstract

This study discusses quality control analysis in the phosphating process at PT Citra Tubindo Tbk, a manufacturer of Oil Country Tubular Goods (OCTG). The problem identified was the high rate of non-homogeneous defects in the phosphating process, reaching an average of 4.16% from January to August 2025, which exceeded the company's maximum standard of 2%. This research aims to identify the optimal process parameters to minimize defects and improve process stability using the Taguchi Method. The experimental design used an L9 (3^3) Orthogonal Array involving three control factors: solution pH, immersion time, and temperature. Based on the analysis of the Signal-to-Noise (S/N) Ratio and mean response, it was found that the optimal combination of parameters to minimize defects is a solution pH of 38, an immersion time of 10 minutes, and a temperature of 70°C. The implementation of this optimal level combination is expected to reduce process variability and significantly decrease the defect rate, thereby meeting the company's quality standards.
PERANCANGAN SISTEM PENGENDALIAN KUALITAS PROSES DI PT. VISTA MEGA JAYA Dewo Setyo Panegoro; Arsyad Sumantika
Computer Science and Industrial Engineering Vol 14 No 01 (2026): Comasie Vol 14 No 1
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

PT Vista Mega Jaya, a company engaged in the fabrication of industrial, restaurant, and residential equipment, was identified as lacking quality control in the dome device table production process at PT Vista Mega Jaya. Based on the identified key issues, the objective of this study was to utilize the DMAIC method, one of the six sigma concept tools, to improve product quality by identifying the causes of product defects and developing proposed improvement plans. The DMAIC method can be used to reduce product defects occurring in the dome device table production process at PT Vista Mega Jaya. The results of the DMAIC study revealed that the average defect rate from January 2024 to December 2024 was 5.6%, with a sigma value of 2.4%, as the company aims for a defect rate of less than 3%. The largest number of defects occurred in the welding process. The lack of work process guidelines, disorganized workers, and inadequate maintenance led to a high number of defective products, necessitating rework. After implementing the improvement plan within four months, the dome device table production process achieved a sigma value of 3.57 out of 2.4.
ANALISIS PERBAIKAN PROSES PRODUKSI PADA UKM TAHU RONGGOLAWE Novia septrianis; Arsyad Sumantika
Computer Science and Industrial Engineering Vol 14 No 01 (2026): Comasie Vol 14 No 1
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v14i01.11171

Abstract

Small and Medium Enterprises (SMEs) play a strategic role in the national economy, especially in the food sector such as tofu production. Many food SMEs still face quality issues due to unstandardized production processes, limited sanitation, and weak quality control. This study analyzes and proposes improvements for the tofu production process at UKM Tahu Ronggolawe, Batam City, to enhance product quality and efficiency. Methods include Six Sigma, Good Manufacturing Practices (GMP), and Work Improvement in Small Enterprises (WISE). Data were collected through observation, interviews, and documentation of production and defect data from January to June 2025. Six Sigma analysis shows an average DPMO of 37,864 and an average sigma level of 3.28, indicating moderate process capability with notable defect opportunities. GMP evaluation reveals sanitation, worker hygiene, equipment, production environment, and documentation mostly fall into less compliant or non-compliant categories. WISE assessment indicates work systems, production layout, machine safety, welfare facilities, and organization are poorly structured and lack written SOPs. Proposed improvements include sanitation SOPs, routine employee work rules, better hygiene practices, and gradual optimization of production layout and environment. Integrating Six Sigma, GMP, and WISE is expected to reduce defects, improve product consistency, and achieve a more efficient, hygienic, and sustainable tofu production process.
PENGABDIAN KEPADA MASYARAKAT DALAM PENGELOLAAN DAN PEMILIHAN SAMPAH DI BATU AJI BATAM Arsyad Sumantika; Ganda Sirait; Bahariandi Aji Prasetyo; Elsya Paskaria Lodya Tarigan
PUAN INDONESIA Vol. 7 No. 2 (2026): Jurnal Puan Indonesia Vol 7 No 2 januari 2026
Publisher : ASOSIASI IDEBAHASA KEPRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37296/jpi.v7i2.466

Abstract

This community service program was implemented with the main objective of implementing an effective and sustainable waste management and sorting system in Batam City. The methods used in implementing this program include a participatory approach through a series of focus group discussions, waste sorting training, and the establishment of a community-based waste management system in the pilot village, namely Batu Aji Village. As demonstrated by the fact that the majority of residents are now actively sorting waste at the household level, the primary outcomes of this community service program demonstrate a notable improvement in community awareness and waste sorting skills. The amount of mixed garbage in the intervention region has decreased because to the organic-inorganic sorting system's adoption, which has also helped to lower the amount of waste that ends up in landfills. The community's economy benefits from this scheme as well, as waste banks and recycling initiatives generate more revenue. Keywords— Waste Management, Sorting, Community, Batam