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All Journal Jurnal Sistem Teknik Industri Metris: Jurnal Sains dan Teknologi
Soraya Putri, Arinda
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Control & Systems Engineering Decision Sciences, Operations Research & Management Education Engineering Industrial & Manufacturing Engineering

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Analysis of Consumable Material Inventory Control in Brake System Company Fahmi, Afiqoh Akmalia; Soraya Putri, Arinda; Setiyawan, Dani
Jurnal Sistem Teknik Industri Vol. 25 No. 1 (2023): JSTI Volume 25 Number 1 January 2023
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v25i1.10565

Abstract

A good raw material and consumables control planning system is important in the production process so that the process runs according to schedule and target. Brake system company is a manufacturing company engaged in brake systems. Concerning the control of consumable material, this company often experiences overstock in warehouses, causing an overrun in inventory costs and investment cannot develop. One of these conditions can be influenced by the ordering method applied by the company which is still not appropriate. The purpose of this study is to find out and provide proposed to companies related to the cost of consumable inventory by comparing the three methods of determining lots based on Fixed Order Quantity (FOQ), Economic Order Quantity (EOQ), and Fixed Order Quantity Proposed (FOQ Proposed) is the FOQ method combined with the Lot for Lot (LFL) principle to determine the method with the most optimal inventory cost. From the results of the study, it is known that the Proposed FOQ method has the lowest total inventory cost compared to the other two methods. The proposed FOQ approach could reduce inventory costs by up to one-third times the previous cost.
Analysis of Mental Workload on Counter Sales Using NASA-TLX Method Safitri Ramadhani, Dinda; Soraya Putri, Arinda; Ambarwati, Niken Fauziah
Metris: Jurnal Sains dan Teknologi Vol. 24 No. 01 (2023): Juni
Publisher : Prodi Teknik Industri, Fakultas Teknik - Universitas Katolik Indonesia Atma Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/metris.v24i01.4358

Abstract

PT. XYZ is a service-oriented branch company that provides consumers with a wide range of products. Services provided by this company is divided into three main sections, namely sales, service, and spare part. One of the main parts is sales, which is selling units of cars carried out by counter sales to meet targets. The demand for achieving targets provides a psychological workload for counter sales. Therefore, it is necessary to measure the mental workload in this area. The work measurement method used in this research is NASA-TLX. This method was developed based on the emergence of subjective measurement needs in measuring workload using six indicators, namely mental demand, physical demand, temporal demand, own performance, effort, and level of frustration. The results showed that WWL values ​​were in the range of 88.33-91.67 and had a very high category. Several recommendations for improvement that need to be implemented include evaluating picket scheduling by considering predictions of increased customer visits, conducting routine training and providing motivation, and providing rewards as a form of appreciation for workers according to their achievements.
Co-Authors Afiqoh Akmalia Fahmi Ambarwati, Niken Fauziah Safitri Ramadhani, Dinda Setiyawan, Dani