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Journal : Jurnal Teknik Industri Terintegrasi (JUTIN)

Perancangan Rute Pengiriman pada PT. ABC untuk Meminimasi Tingkat Keterlambatan Pengiriman dan Biaya Transportasi Menggunakan Model Mixed Integer Linear Programming Putri, Aliya Mahmuda; Ardiansyah, Muhammad Nashir; Chulasoh, Budi Santosa
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 4 (2023): Oktober
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i4.21022

Abstract

The distribution of vegetables in Indonesia is still constrained by the guarantee of continuity between product quality, the minimum amount of supply, and the timeliness of delivery. Time is a very crucial factor in the distribution of vegetables because vegetables are commodities that experience a rapid decline in quality, so they must reach consumers at the right time. PT ABC is a company engaged in the distribution of fresh fruit and vegetables. The problem faced by PT ABC in distribution activities lies in the delay in delivery. This delay problem can be minimized by optimizing the distribution network so that delivery delays do not occur again. The characteristic of the problem contained in this final project is Vehicle Routing Problem with Heterogeneous Fleet and Time Window. The model that will be used to solve this problem is the Mixed Integer Linear Programming model with the main objective to minimize transportation costs and minimize delivery delays. Problem solving was carried out using the Python programming language and Gurobi Solve. The final result obtained is a reduction in the percentage of delays by 5% and a minimization of transportation costs by 4%.
Usulan kebijakan persediaan material untuk meminimasi overstock menggunakan newsvendor model pada PT. XYZ Meilani, Mela; Ardiansyah , Muhammad Nashir; Muttaqin , Prafajar Suksessanno
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 7 No. 4 (2024): October
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v7i4.33537

Abstract

PT XYZ is a company engaged in the concrete manufacturing industry. Concrete production at PT XYZ affects the inventory of constituent materials needed in making concrete. The problem of PT XYZ, there is an overstock of basic materials, because there is a gap between the amount of basic material inventory and demand. So, it is necessary to propose an inventory policy to minimize overstock. The problem-solving method used in this research is ABC Analysis to determine the classification of each material and the new vendor model to determine the amount of material inventory. Based on calculations using ABC analysis, material classification is obtained based on three categories, category A one type of material, category B two types of material, and category C four types of material. Calculations using the newsvendor model obtained a decrease in total inventory costs by 10.8% and the amount of material inventory by 20.4%.