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All Journal Jurnal Engine: Energi, Manufaktur, dan Material Industrika : Jurnal Ilmiah Teknik Industri
Wildan Fatchan Maulidin
Unknown Affiliation
Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Lean Manufacturing dalam Reduksi Waste untuk Peningkatan Efisiensi Produksi Konektor Tipe X di PT XYZ Muhammad Kyodan Khalidzky; Winarno; Wildan Fatchan Maulidin
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 9 No. 1 (2025)
Publisher : Proklamasi 45 University

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Abstract

Inefficient production processes can cause waste that results in delays, increased operational costs, and decreased productivity. Therefore, identifying and reducing waste is important in achieving better efficiency in the production process. This study aims to identify and reduce waste in the production process of type X connectors at PT XYZ by applying Lean Manufacturing principles. The methods used in this study include Value Stream Mapping (VSM) to map the production process flow and Process Activity Mapping (PAM) to analyze production activities in detail. The results of the analysis show that the largest waste occurs at the Operation stage (57.07%), followed by Transportation (26.65%) and Delays (10.89%). Based on the 5W + 1H analysis, it was found that the main causes of waste were the lack of measuring stations and inefficient warehouse layouts. Recommendations given include adding measuring stations, implementing IoT technology to automate data input, and optimizing warehouse layouts. The implementation of these improvements is expected to reduce waste, increase productivity, and help PT XYZ achieve production targets more efficiently.
Optimasi Penjadwalan dan Percepatan Proyek Upgrade H2S Analyzer dengan Metode CPM dan PERT Al Veronica, Uzi; Sutrisno, Sutrisno; Anugrah, Siti Nabilah Putri; Anisti, Tiara Nanda; Wildan Fatchan Maulidin
Industrika : Jurnal Ilmiah Teknik Industri Vol. 9 No. 4 (2025): Industrika: Jurnal Ilmiah Teknik Industri
Publisher : Fakultas Teknik Universitas Tulang Bawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37090/9zsx2031

Abstract

Project delays are a major threat in project management that can result in increased costs and decreased operational efficiency. Therefore, an appropriate planning method is needed to optimize the schedule and reduce the risk of delays. This study aims to analyze the critical path and determine the optimal time in the H₂S Analyzer Upgrade project using the Critical Path Method (CPM) and Program Evaluation and Review Technique (PERT). CPM is used to identify critical activities, namely contracts (A), field surveys (B), specifications (C), H₂S Analyzer (F), tubing & tubing connections (G), sample conditioning systems (H), accessories (I), electrical & instrument cables (J), bulk materials (K), and spare parts for one year of operation (L). The results of the analysis show that the CPM method estimates the project duration of 235 days. Meanwhile, the PERT method provides an estimate of completion in the range of 221 to 251 days, with a probability of project success being completed in 221 days of 0.14%, and in 251 days of 99.86%. The implementation of this method improves the accuracy of project scheduling and supports efficiency in resource management. The results of this study recommend combining CPM and PERT with other optimization techniques, such as crashing, to improve project time and cost efficiency. Keywords: CPM, Critical Path, PERT, Project Management, Time Optimization  
Co-Authors Al Veronica, Uzi Anisti, Tiara Nanda Anugrah, Siti Nabilah Putri Muhammad Kyodan Khalidzky Sutrisno, Sutrisno WINARNO