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Journal of Research and Technology
Published by Universitas NU Sidoarjo
ISSN : 24605972     EISSN : 24776165     DOI : -
Core Subject : Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science Industrial & Manufacturing Engineering
Journal of Research and Technology published since 2015 contains a collection of a selected articles from the results of research and study of literature which is relevant to industrial , chemical, and environment engineering. Target readers of the Journal of Research and Technology are scientists, academics, and practitioners from various fields of industry.
Arjuna Subject : -
Articles 454 Documents
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ANALISIS PENENTUAN METODE TERBAIK TERHADAP SISTEM PENGENDALIAN PERSEDIAAN BAHAN BAKU PADA PT. X Wijiantoro, Bakti; Suhartini
Journal of Research and Technology Vol. 11 No. 2 (2025): JRT Volume 11 No 2 Des 2025
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/bdhsfp45

Abstract

This research discusses the problem of raw material inventory control at PT. X, a company engaged in providing high-quality label printing solutions. Monthly demand fluctuations cause irregularities in raw material ordering, leading to risks of stockouts or overstock situations that impact cost efficiency and production continuity. To address this issue, the study implements three inventory control methods: Economic Order Quantity (EOQ), Periodic Order Quantity (POQ), and Min-Max. The effectiveness of each method is compared using the Simple Additive Weighting (SAW) method with criteria including optimal quantity, ordering frequency, and total inventory cost. The results show that the POQ method is optimal for controlling inventory of vinyl, art paper, and castcoat raw materials, while EOQ is more suitable for lamination materials. The appropriate use of inventory methods has proven to reduce inventory costs and minimize the risks of stock shortages or overstock at PT. X.
Optimasi Komposisi Bahan Baku Waste Paper Untuk Menekan Direct Material Cost Menggunakan Metode Taguchi (Studi Kasus di PT. Kertas Karawang) Simpati Samuel Tasane; Annisa Indah Pratiwi; Rizki Amalia Pratiwi
Journal of Research and Technology Vol. 11 No. 2 (2025): JRT Volume 11 No 2 Des 2025
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/y4q57063

Abstract

This research aims to optimize the composition of waste paper raw materials consisting of SOP, SWL, and OMG in the paper production process at PT. Kertas Karawang. The Taguchi method was employed using an L9 (33) orthogonal array design with three replications for each factor combination. The ANOVA results indicated that SWL had the most dominant contribution of 39.86%, followed by SOP with 19.36%, while OMG was not significant and therefore pooled into the error term of 40.78%. The optimal setting for cost was achieved with the composition of SOP 10%, SWL 10%, and OMG 80%, resulting in production cost of Rp 1,328,123/ton. Meanwhile, the optimal setting for brightness was obtained at SOP 10%, SWL 40%, and OMG 50%, producing a brightness level of 72.46%. However, a compromise setting of SOP 20%, SWL 30–40%, and OMG 20% was considered more balanced, as it reduced the cost to Rp 1,371,755/ton while maintaining brightness at 72.35%. These findings demonstrate that the Taguchi method is effective in determining the optimal raw material composition, enabling the company to reduce production costs without sacrificing product quality.
Occupational Safety and Health (OSH) Risk Management Analysis of Hazardous Waste Treatment Using the HIRARC and Bowtie Analysis Methods Prisilia, Harliwanti; Purnomo, Dimas Aji; Rofiq, Ainur
Journal of Research and Technology Vol. 11 No. 2 (2025): JRT Volume 11 No 2 Des 2025
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/20aa9882

Abstract

The management of hazardous medical waste is an important aspect in maintaining occupational safety and the environment in healthcare facilities. Medical waste collection activities have high potential hazards, such as the risk of needle stick injuries, chemical exposure, and biological contamination. This study aims to analyze the potential hazards and risks in the process of collecting hazardous medical waste using the Hazard Identification, Risk Assessment, and Risk Control (HIRARC) and Bowtie Analysis methods. The HIRARC method is used to identify hazards, assess risk levels, and determine appropriate control measures, while the Bowtie method is used to map the relationship between causes, top events, consequences, and controls. The results of the analysis show that hazards with high risk levels originate from direct contact with sharp objects and infectious materials. Recommended control measures include the use of complete Personal Protective Equipment (PPE), routine training on waste handling, and the implementation of strict standard operating procedures. The integration of the HIRARC and Bowtie methods proved effective in providing a comprehensive overview of potential hazards and risk control strategies in the collection of hazardous medical waste, thus improving work safety and preventing environmental pollution.
Mental Workload Analysis of Employees Using the National Aeronautics and Space Administration Task Load Index (NASA – TLX) Method: (Case Study of CV. XYZ Candi) Hakim, Luqman; Rizki, Muhammad Maulana; Wulandari, Rina Sri
Journal of Research and Technology Vol. 11 No. 2 (2025): JRT Volume 11 No 2 Des 2025
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/2j1f4c94

Abstract

CV. XYZ Candi operates in the manufacturing and services sector, particularly the production of industrial machine spare parts. High productivity demands are often directly proportional to increased employee mental workload—problems at CV. XYZ Candi Technical problems, such as frequent chisel breaks, material delays, engineering drawing errors, and material mismatches (materials not centered), also exacerbate the situation. This is further compounded by employee capabilities that are not fully aligned with the task's complexity, as well as a less-integrated workflow system. To analyze this problem comprehensively, the NASA-TLX (Task Load Index) method was chosen as an evaluation tool. NASA-TLX measures mental workload multidimensionally through six indicators: mental demand, physical demand, time requirements, performance, effort level, and frustration level. This method is relevant to apply to a CV. XYZ Candi can identify dominant factors that contribute to workload, such as time pressure, task difficulty, and priority conflicts. Most respondents (57.2%) experienced moderate mental workload, 33.3% high, and 9.5% low mental workload among the 21 employees at CV. XYZ Candi experienced very high mental workloads, with the highest scores influenced by physical demands, time demands, effort levels, and frustration levels.

Page 46 of 46 | Total Record : 454

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