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All Journal Tekinfo | Scientific Journal of Industrial and Information Engineering
Nurike Oktavia
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Computer Science & IT Industrial & Manufacturing Engineering

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Penentuan Level Optimum Persediaan Spare Parts di PT. XYZ Menggunakan Minimum Maximum Stock Level (MMSL) Nurike Oktavia; Rapni Nasution; Wahyuni Amalia
Tekinfo: Jurnal Ilmiah Teknik Industri dan Informasi Vol 11 No 1 (2022)
Publisher : Program Studi Teknik Industri Universitas Setia Budi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31001/tekinfo.v11i1.1686

Abstract

XYZ company in Sumatera area is operating in the business of oil palm plantation and oleochemicals processing. Its production is based on the supply of mostly from company-owned plantation. In this push system of raw material, production runs continuously resulting the reliability of the machine becomes essential. Material and spare part that support machine cannot be replenish at time when it needed. Thus, overstock can be due to the high cost of storing as well as the risk of storing products. This study aims to calculate minimum and maximum level of inventory that have been the most often stockout occur. The calculation is carried out by Minimum-Maximum Stock Level (MMSL) method on refillable oxygen, turalik oil, steel nut bolt 3/4x3”, steel nut bolt 3/4x4”, welding wire RB 26 dia. 3.2 mm and welding wire LB 52 dia. 3.2mm. MMSL in this study accommodate basic economic order quantity (EOQ). Calculation displays the minimum level, mximum level and optiml order quantity for all six materials. The results are then compared with the actual data and it was found that high fluctuations caused the minimum level results to be in high level and the range between the minimum-maximum levels becomes narrow. One aspect of the reckoning is the demand rate which is calculated by dividing the annual demand by the number of working days. Such justifications should not be used on data with high fluctuations. Therefore, MMSL with basic EOQ should be used on data with small standard deviation Keywords: level minimum, level maximum, safety stock, economic order quantity
Perancangan Layout Gudang Bahan Kemas di PT. X dengan Menggunakan Pendekatan Metode Class Based Storage Suci Oktri Viarani; Ira Novela; Nurike Oktavia
Tekinfo: Jurnal Ilmiah Teknik Industri dan Informasi Vol 11 No 2 (2023)
Publisher : Program Studi Teknik Industri Universitas Setia Budi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31001/tekinfo.v11i2.1945

Abstract

Product layout in the warehouse is a design to arrange product storage facilities by analyzing product movements to realize efficiency and effectiveness in warehouse operational processes starting from receiving, storing and shipping products to consumers. This research was conducted at the Packaging Materials Warehouse at PT.X. Problems that occur in this packaging material warehouse occur when storing products, the operator will immediately store the product on an empty shelf. In addition, the placement of products contained in this warehouse is placed not adjacent to similar products. Based on this, this study aims to design the layout of the warehouse to make it easier for operators in the process of receiving, storing and shipping products in the warehouse, so as to minimize the distance of moving products. In the research, the approach used is the Class Based Storage method. Based on the results and discussion, it was concluded that the grouping of goods in the packaging materials warehouse of PT. X uses the class based storage method which is divided into 3 classes based on the product input-output process. Class A for the fast moving product category (80%, 10% items), Class B for the slow moving product category (15%, 15% items) and Class C for the non-moving product category (5%, 75% items). Based on the calculation of the total mileage, the distance traveled has decreased by 49.63% or a decrease in distance of 208.032.5 m.
Co-Authors Ira Novela Rapni Nasution Suci Oktri Viarani Wahyuni Amalia