scholarly journals Evaluating The Performance of Inventory Management The Production Division of PT. Tiga Serangkai Surakarta as a Case Study

2016 ◽  
Vol 1 (1) ◽  
pp. 93
Author(s):  
Sri Maryati

This research aims to understand the process of production and to analyze the performance of inventory system on production division of PT. Tiga Serangkai. The data has been gathered from direct observation of the process production and warehouse and the interview with the production employee, the employee of warehouse division, supervisor of purchasing and finance manager. This research demonstrates that inventory system performance of PT. Tiga Serangkai Surakarta can be optimized through the determination of inventory policy, applying a model minimum and maximum inventory that considers the safety stock in accordance with service level plan, implementing model Reorder Point (ROP) which can be used as guidelines in charging supply back, and applying the model economic ordering quantity. In doing so, they can save the cost of inventory. Keywords: inventory management, economic order quantity (EOQ), PT. Tiga Serangkai 

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Nurlela Machmudin ◽  
Vera Safitri

ABSTRACTThe aim of the research was to compare the inventory control system in D’Baloy Food Industries MSMEs and the optimal control of onion dayak stock to production dayak onion tea by the method of Economic Order Quantity (EOQ). Descriptive analysis to describe the control system of dayak onion stock in D'baloy Food Industries MSMEs. EOQ methods to analyze optimum order quantities and calculate the optimum frequency of purchases. Safety stock analysis and Reorder point analysis are also carried out. The results showed  the management of raw material inventories in UKM D’baloy Food Industries was not optimal. The current cost of raw material inventory is Rp.752.000 in a year, inventory costs using the EOQ method is Rp.463.448. If applying the optimum inventory, then the cost of dayak onion material stock that can be saved by D’baloy Food Industries MSMEs is Rp.288.552. The cost savings are achieved if the quantity of each message is increased from 10 kg to 29 kg. The frequency of purchases decreased from 96 times a year to 33 times. To avoid the problem of uncertainty in demand and price of raw materials, the safety stock that D'Baloy must provide is 30 kg. The raw material is re-ordered when the stock of dayak onions 38.01 kg. The maximum inventory that must be available before reorder 59 kg. Inventory management using the EOQ method places more emphasis on the availability of safety stock with the reason to overcome the problem of uncertainty in demand and fluctuations in raw material prices.Keywords :  Dayak Onion, Economic Order Quantity, InventoryABSTRAKUKM D’Baloy Food Industries belum menerapkan manajemen persediaan bahan baku bawang dayak secara optimal karena bahan baku yang tersedia di perusahaan masih kurang. Kekurangan bahan baku akan menghambat produksi the bawang dayak. Tujuan penelitian ini adalah untuk membandingkan manajemen persediaan di UKM D’Baloy Food Industries bawang dayak untuk produksi teh bawang dayak dengan metode Economic Order Quantity (EOQ). Analisis deskriptif untuk menggambarkan manajemen persediaan dayak di UKM D’Baloy Food Industries. Metode EOQ digunakan untuk menganalisis jumlah pesanan optimal dan menghitung frekuensi pembelian optimal. Perhitungan safety stock dan Reorder point juga dilakukan. Hasil penelitian menunjukkan bahwa persediaan bahan baku bawang dayak di UKM D’Baloy Food Industries belum optimal. Biaya persediaan bahan baku saat ini adalah Rp.752.000 dalam setahun, sedangkan biaya persediaan menggunakan metode EOQ adalah Rp.463.448. Jika menggunakan persediaan optimal, maka biaya persediaan bahan bawang dayak yang dapat dihemat oleh D’Baloy Food Industries adalah Rp.288.552. Penghematan biaya dapat jika jumlah setiap pesan ditingkatkan dari 10 kg menjadi 29 kg. Frekuensi pembelian diturunkan dari 96 kali setahun menjadi 33 kali. Untuk menghindari masalah ketidakpastian dalam permintaan dan harga bahan baku, stok pengaman (safety stock) yang harus disediakan D'Baloy adalah 30 kg. Bahan baku dipesan ulang saat stok bawang dayak 38,01 kg. Persediaan maksimum yang harus tersedia sebelum memesan ulang 59 kg. Manajemen persediaan menggunakan metode EOQ lebih menekankan pada ketersediaan stok pengaman dengan alasan untuk mengatasi masalah ketidakpastian dalam permintaan dan fluktuasi harga bahan baku.Kata kunci: bawang dayak, metode Economic Order Quantity, persediaan


10.5772/56859 ◽  
2013 ◽  
Vol 5 ◽  
pp. 41 ◽  
Author(s):  
Maria Elena Nenni ◽  
Massimiliano M. Schiraldi

As a means of avoiding stock-outs, safety stocks play an important role in achieving customer satisfaction and retention. However, traditional safety stock theory is based on the assumption of the immediate delivery of the ordered products, which is not a common condition in business-to-business contexts. Virtual safety stock theory was conceived to raise the service level by exploiting the potential time interval in the order-to-delivery process. Nevertheless, its mathematical complexity prevented this technique from being widely adopted in the industrial world. In this paper, we present a simple method to test virtual safety stock effectiveness through simulation in an inventory system using a base stock policy with periodic reviews and backorders. This approach can be useful for researchers as well as practitioners who want to model the behaviour of an inventory system under uncertain conditions and verify the opportunity for setting up a virtual safety stock on top of, or instead of, the traditional physical safety stock.


2020 ◽  
Vol 20 (2) ◽  
Author(s):  
Ardhitya Alam Wiguna ◽  
Linda Ekadewi Widyatami

Doho Suwar-Suwir is a Micro Small Medium Enterprises (UMKM) processing Fermented Cassava (Tape Singkong) to become a processed food in Jember, which is Suwar-Suwir. To maintain the stability of production process, needs a control for the stock management towards the raw material at Doho Suwar-Suwir UMKM. The raw material inventory management at Doho Suwar-Suwir UMKM is about fermented cassava raw material inventory which then are processed to become the typical food of Jember Regency, which is Suwar-Suwir. The goal of this research were to analyze the fermented cassava raw material inventory quantity and to analyze the safety stock quantity at Doho Suwar-Suwir UMKM. The method used in this research was stock management calculation or Economical Order Quantity (EOQ) where the result of this research was the quantity of fermented cassava raw material  needed using Economical Order Quantity (EOQ) method at Doho Suwar-Suwir business was 60,6 kg and the number of the safety stock which must exist was 5,5 kg.


2021 ◽  
Author(s):  
Lyudmila Babenko ◽  
◽  
Valentina Vasilyeva ◽  
Еlena Коnovalova ◽  
◽  
...  

In the course of research it has been stated that the category of «inventories» is not only the object of accounting, but also the object of management, so the identification of inventories in the assets upon receipt at the enterprise is the initial stage of the accounting process. The process of material and technical base management begins at the stage of searching for suppliers, delivery conditions, formation of the logistics component, determination of transport and procurement costs. There is no doubt that the additional costs associated with these processes will affect the formation of the value of purchased inventories. Therefore, the authors emphasize that the methods of estimating inventories at their receipt and disposal play an important role in accounting, as they affect the formation of the cost of finished goods produced from inventories, and hence the overall financial performance of the enterprise. It should also be taken into account that in accordance with the norms of UAS 9, only the amounts of transportation and procurement costs related to the acquisition (receipt) of inventories are subject to inclusion in the initial cost. In practice, the increase in the value of inventories often includes costs incurred in connection with the internal transportation of inventories on the territory of the enterprise or between its structural units; costs arising from the return of inventories to the supplier; costs for loading, transportation, transshipment and insurance of inventories, finished products (goods), freight forwarding and other services related to the sale of products (goods). Such costs do not affect the formation of the initial cost of inventories. Therefore, the authors highlighted the need for a clear delineation of these costs at specific enterprises with the reflection of provisions in the Order (Regulation) on accounting policies. Most scientists discuss the feasibility of search for a method of cost allocation during transportation, because during this process there can be losses of inventories both within the established norms of natural loss, excessive losses and shortages, as well as spoiled inventories found during asset recognition. The authors gave their own view on the possibility of solving this problem. The solving approach has been presented as well as the peculiarities of the reflection of the distributed transport and procurement costs in the system of accounting have been considered. The situation when the company transport both purchased inventories and those, sold to customers, with its own transport has been considered. In such cases, the authors suggest a method of allocating transportation costs with subsequent allocation to transport and procurement costs, which increase the cost of purchased inventories and distribution costs.


Author(s):  
Alan D. Smith

Implementing a just-in-time (JIT) inventory management strategy seems to be the latest hot topic in the business world, particularly in manufacturing industries. In today's competitive supply chain environment, more and more companies are either adopting JIT methodology or at least beginning to research and understand how JIT would affect their business. But what exactly is JIT? Many companies may be already putting into practice some of the concepts of JIT – such as looking at always improving or trying to reduce waste in terms of product or labor steps. Some companies may be fully ready to embrace a JIT operating process; yet, perhaps JIT is not the best choice for their business. The goal of this chapter is to develop a better understanding of JIT, from this history behind its inception to the various risks and benefits that relate to adopting JIT from an interdisciplinary/strategic approach to a transdisciplinary viewpoint. Those strategies, which include the basic methods of minimum stock, economic order quantity (EOQ), and Safety stock methods, are explored and explained in this chapter.


Author(s):  
Gizem Sağol ◽  
Görkem Sariyer ◽  
Banu Yetkin Ekren ◽  
Mustafa Gökalp Ataman

Inventory management is one essential lever to use the resources efficiently. However, managing inventories in hospitals is a challenging task because of the several issues: a high service level of medical supplies is required under the unpredictable demand, medical products constitute a significant portion of the overall costs, and the management of these supplies requires considerable effort to check the levels to track usage and to distribute them. Therefore, it is pertinence to apply operations research tools to cope with the managerial issues of the hospital inventory system. In this chapter, the authors implement an (s, S) inventory model by using simulation in a case study of a hospital in Izmir, Turkey. They aim to analyze the unpredictable nature of demand of medical supplies in this hospital and its implications on the developed inventory policy.


2013 ◽  
Vol 4 (4) ◽  
pp. 15-27 ◽  
Author(s):  
Salvatore Digiesi ◽  
Giorgio Mossa ◽  
Giovanni Mummolo

Abstract Transport plays a key role in inventory management since it affects logistic costs as well as environmental performance of the supply chain. Expected value and variability of supply lead time depend on the transportation means adopted, and influence the optimal values of order quantity, reorder level, and safety stock to be adopted. Fast transportation means allow reducing expected value of the lead time; they are characterized by the highest costs of externalities (i.e. air pollutant emission, noise, congestion, accidents). On the contrary, slow transportation means require high inventory level due to large order quantity; in this case costs of externalities tend to decrease. The Sustainable Order Quantity (SOQ) [1] allows identifying optimal order quantity, reorder level, safety stock as well as transportation means which minimize the sum of the logistic and environmental costs in case of stochastic variability of product demand. In this paper, the authors propose a new SOQ analytical model considering stochastic variability of supply lead time (LT). A solution procedure is suggested for solving the proposed model. The approach is applied to a real industrial case study in order to evaluate the benefits of applying it if compared with the traditional one.


2015 ◽  
Vol 1 (1) ◽  
pp. 50-59
Author(s):  
Letícia De Cassia Teixeira Vilhena ◽  
Priscilla Cristina Cabral Ribeiro

Among logistics activities, inventory management stands out for cost increasing, demand fluctuations and for ensuring reasonable operational resources use. Therefore, a tool that enables more efficient inventory management Vendor Managed Inventory - VMI. It enables inventory monitoring by the supplier, being his responsibility immediately resupply when safety stock is reached. In face of such importance, this study aims to analyze VMI adoption in a food retailer inventory. So, a qualitative approach was used, presenting a case study, with semi-structured interviews with a script of questions. Thus, through this research we could identify advantages such as stock and delivery cost reduction.


2016 ◽  
Vol 12 (1) ◽  
pp. 317 ◽  
Author(s):  
Dina Rahmayanti ◽  
Ahmad Fauzan

PT Abaisiat Raya is one of the manufacturers of rubber crumb (crumb rubber) in the city of Padang. Latex inventory management system at PT Abaisiat Kingdom basically signinfikan still need improvement. It is based on the planning activities in the warehouse inventory of raw materials firms irregular, thus causing excess stock (over stock) at a time and shortage of stock (stock out) at other times. Process optimization is done with latex inventory system involving factors such as demand forecasting production planning or latex needs during the period of next 12 (in 2012), the costs involved, the waiting time (lead time), the implementation of forecasting methods, determination of size lots (lot sizing), the determination of safety stock (safety stock), and re-ordering time (reorder point), so the output will get a number of requests are for 12 periods ahead, the size of each reservation period, the total cost is required, when re-ordering will be done , as well as how much inventory to latex in the warehouse. Based on these results, it was found that the optimal size of the book is the same as the demand for each period (reservation is made each period) due to a cyclical pattern of demand and decreases throughout the planning period. Value of the stock or safety stock is located in Kg 114,282.20, and re-ordering time (reorder point) to cope with fluctuations do when the stock has reached a level of 333,130.95 kg.Keywords: Forecasting, Time Wait, Lot Size, Safety Supplies, Reorder


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