scholarly journals ANALISA PENGENDALIAN PERSEDIAAN DAUN KAYU PUTIH YANG OPTIMAL DENGAN METODE CONTINOUS REVIEW SYSTEM DI PT. XYZ

2021 ◽  
Vol 16 (1) ◽  
pp. 106-117
Author(s):  
Enny Aryanny ◽  
Ragil Kusuma Jati
Keyword(s):  
Raw Materials ◽  
Raw Material ◽  
Lost Sales ◽  
Continuous Control ◽  
Review System ◽  
Total Cost ◽  
Continuous Review ◽  
Eucalyptus Oil ◽  
Inventory Costs ◽  
Eucalyptus Leaves

Persediaan adalah sumber daya yang perlu diadakan dan dipelihara untuk menunjang kelancaran produksi. PT. XYZ merupakan perusahaan yang bergerak di proses pembuatan minyak kayu putih. Perusahaan memproduksi minyak kayu putih dimana bahan baku utamanya adalah daun kayu putih. Perusahaan ini memiliki permasalahan dalam melakukan pengendalian persediaan bahan baku daun kayu putih yang disebabkan oleh permintaan minyak kayu putih oleh konsumen yang tidak menentu. Perusahaan mengalami keadaan persediaan yang berlebih yang mengakibatkan tingginya biaya persediaan dan kurangnya persediaan yang mengakibatkan produksi yang tidak memenuhi pesanan. Berdasarkan permasalahan di atas, maka dilakukan pengendalian persediaan dengan metode continuous review system backorder dan lost sales. Tujuan dari penelitian ini adalah melakukan pengendalian persediaan daun kayu putih sehingga dapat meminimumkan biaya persediaan. Metode continuous review system backorder dan lost sales akan dibandingkan dengan metode perusahaan dan dipilih metode terbaik dengan total biaya paling minimum. Hasil dari perhitungan diperoleh total biaya persediaan minimum dengan metode continuous review system backorder sebesar Rp 2.459.692.004, sedangkan metode perusahaan sebesar Rp 2.595.684.800, sehingga mendapatkan penghematan biaya sebesar Rp 135.992.796 dengan efisiensi sebesar 5,2%. Jumlah pemesanan bahan baku per pesan bulan November 2019 – Oktober 2020 sebesar 1.812 ton, dengan total biaya persedian bahan baku sebesar Rp 2.544.762.825.   Kata Kunci: Continuous, Pengendalian, Persediaan.   ABSTRACT Inventories are resources that need to be procured and maintained to support the continuity production. PT. XYZ is a company engaged in the process of making eucalyptus oil. The company produces eucalyptus oil where the main raw material is eucalyptus leaves. This company has problems in controlling the supply of raw materials of eucalyptus leaves caused by the erratic demand of eucalyptus oil by consumers. The company experiences a state of excess inventory which results in high inventory costs and lack of inventory resulting in production that does not fulfill orders. Based on the above problems, inventory control is carried out using the continuous review system backorder and lost sales method. The purpose of this study is to control the inventory of eucalyptus leaves so as to minimize inventory costs. The continuous review system backorder and lost sales method will be compared with the company method and the best method is chosen with the minimum total cost. The results of the calculation obtained the minimum total inventory cost with the continuous review system backorder method of Rp.2,459,692,004, while the company's method of Rp2,595,684,800, so as to get a cost savings of Rp.135,992,796 with an efficiency of 5.2%. The number of raw material orders per message in November 2019 - October 2020 amounted to 1,812 tons, with a total cost of supplying raw materials amounting to Rp 2,544,762,825.   Keywords: Continuous, Control, Inventory.

scholarly journals PERENCANAAN DAN PENGENDALIAN PERSEDIAAN BAHAN BAKU PAIL CAT MENGGUNAKAN METODE MATERIAL REQUIRMENT PLANNING (MRP) PADA PT. XYZ

JUMINTEN ◽  
2020 ◽  
Vol 1 (4) ◽  
pp. 163-172
Author(s):  
Vify Elviana ◽  
Akmal Suryadi
Keyword(s):  
Inventory Management ◽  
Consumer Demand ◽  
Raw Materials ◽  
Raw Material ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity ◽  
Material Requirements Planning ◽  
Total Cost ◽  
Material Requirements

Persediaan merupakan aset perusahaan yang memiliki peran penting dalam operasi bisnis, sehingga perusahaan penting untuk melakukan manajemen persediaan yang baik, artinya perusahaan harus mampu mengantisipasi kendala maupun tantangan yang ada dalam pengelolahan persediaan untuk meminimalisasi total biaya yang harus dikeluarkan oleh perusahaan. Permasalahan yang timbul pada persediaan bahan baku di PT XYZ adalah perusahaan melakukan perencanaan dan pengendalian bahan baku hanya berdasarkan pada pengalaman-pengalaman sebelumnya dan tidak berdasarkan pada metode yang sudah baku. Oleh karena itu pembelian bahan baku tidak sesuai dengan permintaan konsumen. Hal tersebut sering menyebabkan terjadinya kelebihan maupun kekurangan stok bahan baku. Kesalahan dalam penentuan besarnya investasi dalam persediaan akan mengurangi keuntungan perusahaan. Adanya persediaan bahan baku yang terlalu besar, akan menambah beban biaya pemeliharaan dan penyimpanan dalam gudang, serta kemungkinan terjadinya penurunan kualitas bahan baku yang dapat menyebabkan berkurangnya keuntungan perusahaan. Namun jika persediaan bahan baku terlalu sedikit maka akan berakibat pada terhambatnya proses produksi, sehingga tidak terpenuhinya permintaan konsumen. Hasil penelitian ini dapat menyimpulkan bahwa perencanaan kebutuhan bahan baku dengan metode perusahaan didapatkan total cost sebesar Rp 1.796.762.429,-, sedangkan metode Material Requirements Planning (MRP) didapatkan total cost sebesar Rp 1.576.011.801,-. Maka dapat disimpulkan telah terjadi penurunan total cost seluruh bahan baku sebesar 12,28%. Hal ini membuktikan bahwa metode Material Requirements Planning (MRP) lebih efisien daripada metode PT. XYZ. Oleh karena itu untuk mendapatkan total cost yang minimum, metode Material Requirements Planning (MRP) diterapkan pada periode Februari-Juni 2020 sehingga didapatkan total cost sebesar Rp 1.576.011.801,-. Kata Kunci:         Material Requirements Planning (MRP), PT XYZ, Pail Cat, Economic Order Quantity (EOQ), Period Order Quantity (POQ), Lot For Lot (LFL). ABSTRACT                     Inventory is a company asset that has an important role in business operations, so the company is important to conduct good inventory management, meaning that the company must be able to anticipate obstacles and challenges that exist in managing inventory to minimize the total cost to be incurred by the company.The problem that arises in the supply of raw materials in PT XYZ is that the company plans and controls raw materials based only on previous experiences and not based on established methods. Therefore, the purchase of raw materials is not in accordance with consumer demand. This often leads to excess or shortage of raw material stock. Mistakes in determining the amount of investment in inventories will reduce company profits. The availability of raw materials that are too large, will add to the burden of maintenance and storage costs in the warehouse, as well as the possibility of a decline in the quality of raw materials that can lead to reduced company profits. However, if the supply of raw materials is too little, it will result in obstruction of the production process, so that consumer demand is not fulfilled. The results of this study can conclude that the planning of raw material needs by the company method obtained a total cost of Rp 1,796,762,429, - while the Material Requirements Planning (MRP) method obtained a total cost of Rp 1,576,011,801, -. Then it can be concluded that there has been a decrease in the total cost of all raw materials by 12.28%. This proves that the Material Requirements Planning (MRP) method is more efficient than the PT. XYZ. Therefore, to get the minimum total cost, the Material Requirements Planning (MRP) method was applied in the February-June 2020 period so that a total cost of Rp 1,576,011,801 was obtained.   KeyWords: Material Requirements Planning (MRP), PT XYZ, Pail Cat, Economic Order Quantity (EOQ), Period Order Quantity (POQ), Lot for Lot (LFL).

scholarly journals Analisis Pengendalian Persediaan Bahan Baku dengan Menerapkan Metode EOQ (Economic Order Quantity) pada PT. Jatisari Furniture Work

2021 ◽  
Vol 5 (1) ◽  
pp. 215
Author(s):  
Arga Sutrisna ◽  
Rizki Ginanjar ◽  
Suci Putri Lestari
Keyword(s):  
Production Costs ◽  
Raw Material ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Analysis Tool ◽  
Order Quantity ◽  
Inventory Cost ◽  
Total Cost ◽  
Inventory Costs ◽  
Total Inventory

This research objectives aims to determine and analyze raw material inventory control, the ideal raw material inventory that the company must provide and the efficiency of production costs carried out by Jatisri Furniture Work in Tasikmalaya for the period 2018.11 – 2020.02. The data collection method in this study is by direct observation at Jatisari Furniture Work in Tasikmalaya. Using techniques such us interviews, observation, and documentation. These observations were made in production reports for the years 2018 – 2020. The analysis tool was carried out using the Economic Order Quantity (EOQ) method such us safety stock, reorder point, and total inventory cost. The result of the Economic Order Quantity (EOQ) analysis show that the total cost of raw the material inventory that must be incurred by the company is greater than the total cost of inventories calculated according to the EOQ method. Companies should follow the calculations from the EOQ method so that they can save on raw material inventory costs, so that production costs are more efficient.

scholarly journals MATERIAL REQUIREMENT PLANNING UNTUK MEMENUHI PRODUKSI PADA CV. BANGUN CIPTA ARTHA DI BADUNG

2020 ◽  
Vol 9 (2) ◽  
pp. 426
Author(s):  
I Made Sugita Yasa ◽  
Kastawan Mandala
Keyword(s):  
Inventory Management ◽  
Lot Sizing ◽  
Raw Materials ◽  
Raw Material ◽  
Exact Order ◽  
Lot Size ◽  
Inventory Costs ◽  
Material Requirement Planning ◽  
Material Requirement ◽  
Total Inventory

Inventory management without Material Requirement systems in CV. Bangun Cipta Artha resulted in the lot size for each order of raw materials not optimal. One concept that can be used to plan and control raw materials is the Material Requirement Planning. This study is to determine the number of sizes of raw material orders, the exact order time, the method that produces the lowest cost for each raw material, and the effect of using MRP on inventory costs. This research conducted on 160x200cm spring bed products. Data was analyzed by making production master schedules, determining net requirements, determining lot size, and making MRP tables. Based on the results, the determination the best lot sizing is the order quantiy period which results in a total inventory cost of Rp. 26,475,220 where the total cost is lower, compared to lot for lot method which Rp. 43,464,000. part period balancing Rp. 33,106,576, and conventional method Rp.49,472,912. Keywords: Material Requirement Planning (MRP), Sizing Lot, Lot For Lot, Balancing Part Period, Period Order Quantiy

OPTIMALISASI PENGADAAN BAHAN BAKU DALAM RANGKA MEMINIMALKAN TOTAL BIAYA PERSEDIAAN TEMBAKAU PADA PT BENTOEL INTERNATIONAL INVESTAMA DI MALANG

2019 ◽  
Vol 2 (1) ◽  
pp. 23
Author(s):  
Dwi Dayanti Oktavia ◽  
Peni Indarwati ◽  
Marhaerni Fikky Febriananta
Keyword(s):  
Production Process ◽  
Raw Materials ◽  
Cost Savings ◽  
Optimal Level ◽  
Raw Material ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity ◽  
Total Cost ◽  
The Cost

A company should maintain an adequate or optimal level of inventory so that production operations can run smoothly and efficiently. What needs to be considered in this case is that the required raw materials are always available, so as to guarantee the smooth production process. However, the amount of inventory should not be too much because this will harm the company. Too much inventory will increase maintenance costs and storage costs in the warehouse. In addition, the amount of inventory that is too much can also increase the likelihood of losses due to damage and loss of quality that can reduce company profits. And vice versa, the amount of inventory that is too small will hamper the production process so that the company will suffer a lot of losses including: the machine does not work as it should, many workers are unemployed, and can even result in the cessation of the production process. This study aims to determine how the calculation of raw materials, what is the total cost of raw material inventory if the company establishes an EOQ (Economic Order Quantity) policy, what is the limit or point of ordering raw materials needed by the company during the grace period at PT.Bentoel International Investama in Malang.The population used is the supply of tobacco raw materials at PT. Bentoel International Investama, where this research was conducted by interview and documentation. The variable in this study is the supply of raw materials. The analysis used is the EOQ (Economic Order Quantity) method.The results of the study, if using the EOQ method in 2017 the cost savings of Rp 40,290,256,931, while in 2018 the cost savings of Rp. 44,388,428,549. Thus there is a difference between inventory policies carried out according to the company with EOQ calculations. It can be concluded that the supply of raw materials every year has increased raw materials, the frequency of purchasing raw materials when using raw materials when using the EOQ method is 2 times in one period, the limit for ordering raw materials needed by companies when using the 2017 EOQ method is 218,176.7 kg, while in 2018 it will be 210,853 kg. The total cost of raw material inventory calculated according to EOQ is less than that spent by the company, so there is a cost savings of raw material inventory

scholarly journals Controlling Vaname Shrimp (Litopenaeus Vannamei) Raw Material Inventories (Case Study at PT. Grahamakmur Ciptapratama Sidoarjo)

2021 ◽  
Vol 4 (1) ◽  
pp. 37-46
Author(s):  
Iffan Maflahah ◽  
Amalia Wahyu Pratiwi ◽  
Asfan
Keyword(s):  
Raw Materials ◽  
Raw Material ◽  
Timely Manner ◽  
Inventory Cost ◽  
Inventory Costs ◽  
Point Analysis ◽  
Planning Technique ◽  
Frozen Shrimp ◽  
Red Ginger

Raw material inventory control is used to place orders and ensure that shrimp raw materials arrive in a timely manner in accordance with consumer demand. This will expedite the course of the production process. This research was conducted at PT. Grahamakmur Ciptapratama Sidoarjo with the aim of knowing and analyzing the control of raw red ginger in frozen shrimp products. The method used is the Economic Order Quantity (EOQ) Method with the Lot For Lot (LFL) Technique. In addition, safety stock analysis, Maximum Inventory, warehouse capacity and Reorder Point analysis were carried out. The results of the study showed that inventory costs using the EOQ technique were lower than the company method or using the LFL technique. The EOQ technique produces an inventory cost of IDR 292,591.00 in 2017 with an order frequency of 105 times and in 2018 of IDR 289,750.00 with a booking frequency of 116 times. In the LFL technique inventory costs are more expensive, but the planning technique in the LFL method can be applied by companies in anticipation of raw material inventory if there is a small inventory. If the company applies the EOQ method, the company purchases raw materials in a larger amount, but the warehouse capacity in the company can still be met, this can be seen from the calculation of Maximum Inventory and warehouse capacity.

scholarly journals Inventory Policy Control Using a Continuous Review Model Based on Information Systems: A Case Study in a Restaurant Industry

OPSI ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 154
Author(s):  
Ichsan Sarafi ◽  
Laila Nafisah ◽  
Ahmad Muhsin
Keyword(s):  
Information System ◽  
Raw Materials ◽  
Restaurant Industry ◽  
Raw Material ◽  
Optimal Order ◽  
Continuous Review ◽  
Iterative Calculation ◽  
Speed Up ◽  
Review Model

The development of information technology has become a necessity for every company, one of which is the optimization of inventory planning. The joint warehouse owned by the Chickenpedia Restaurant which has to supply various types of raw materials to the three restaurant branches often experiences stock outs and has to make emergency orders resulting in losses. For this reason, it is necessary to control the inventory of raw materials in the shared warehouse so that stock outs can be overcome and losses that arise can be minimized. One of them is by using the Continuous Review method. By using this method, the optimal order quantity and reorder point will be obtained. The weakness is iterative calculation and monitoring of raw material stock manually. For this reason, it is necessary to support an information system to speed up and make it easier to calculate when to place an order and how many orders of raw materials to suppliers so as to reduce the occurrence of running out of raw materials. The Information System can also monitor the stock of raw materials every day in real time based on the number of incoming and outgoing goods that enter the application.

scholarly journals PENDAPATAN USAHA DAN PERSEDIAAN BAHAN BAKU INDUSTRI BAWANG GORENG (Studi Kasus Industri Bawang Goreng “Uda Saprudin”)

2020 ◽  
Vol 13 (2) ◽  
pp. 8-17
Author(s):  
Herlena Bidi Astuti ◽  
Yesmawati Y ◽  
Linda Harta ◽  
Reswita R
Keyword(s):  
Lead Time ◽  
Raw Materials ◽  
Raw Material ◽  
Added Value ◽  
Operating Income ◽  
Inventory Costs ◽  
The Past ◽  
Total Inventory ◽  
C Value

Processing shallots into fried onions is one of the agro-industry businesses with the main raw material of shallots. The fried onion home industry is a downstreaming of agricultural commodities by providing added value from the raw materials of shallots, in the process of production competition the industry must conduct management that will produce raw materials to ensure obtaining products. The purpose of this study was to determine the operating income of fried onions and determine the management of raw materials in the "Uda Saprudin" fried onion industry in Bengkulu City. The method used in this study is the calculation of income, R / C ratio, and management of raw materials using EOQ, Safety Stock, Reorder Points, lead time and total inventory costs. This research is a case study conducted in February 2019 with the data used is the data of the past year (2018). From the research results obtained R / C value of 1.36 and the management of raw material requirements recognized EOQ value: 6.546 Kg, Reorder Point value: 6.329 Kg / Month, lead time: 0.5 months and Total inventory costs: Rp. 163,676,047 per year.

scholarly journals A model of a production-repair inventory system with time-varying demand and quality-dependent recovery channels

2021 ◽  
Vol 36 ◽  
pp. 04002
Author(s):  
Ivan Yeo
Keyword(s):  
Raw Materials ◽  
Planning Horizon ◽  
Inventory System ◽  
Raw Material ◽  
Time Varying ◽  
Total Cost ◽  
External Sources ◽  
Varying Demand ◽  
Infinite Planning Horizon ◽  
Better Than

In this paper, we study an inventory system over an infinite planning horizon where a time-varying demand is satisfied by process cycles that consist of a production batch followed by a recovery batch. Our model considers three types of inventory—returned items, serviceable items, and raw material. Furthermore, our model considers two recovery channels—recovery into serviceable items and recovery into raw material. Serviceable items are thus sourced from two inputs—direct recovery and production from raw material. These raw materials can be salvaged from returned items, as well as bought from external sources whenever required. We propose an expression for the unit time total cost as well as a numerical method to find the optimal policy. The properties of the model are studied through numerical experiments, in particular, the feasible situations where hybrid policies are better than pure policies.

scholarly journals Kajian Ketersediaan Bahan Baku, Tingkat Persaingan, dan Perilaku Kewirausahaan dalam Mendukung Perkembangan Usaha

2020 ◽  
Vol 1 (2) ◽  
pp. 47
Author(s):  
Anugrah Putra Perdana ◽  
Muhammad Dinar ◽  
Muhammad Hasan ◽  
Rahmatullah Rahmatullah ◽  
M. Ihsan Said Ahmad
Keyword(s):  
Customer Loyalty ◽  
Swot Analysis ◽  
Raw Materials ◽  
Business Owners ◽  
Raw Material ◽  
Target Market ◽  
Strategic Choices ◽  
Entrepreneurial Behavior ◽  
Inventory Costs ◽  
Analysis Technique

This study aims to determine the availability of raw materials, the level of competition, and entrepreneurial behavior of the furniture business in Manggala District, Makassar City in supporting business development. This research is categorized as a descriptive study with a qualitative approach, data collection is done using the method of observation, interviews, and documentation. The analysis technique used is the SWOT analysis. The results of this study indicate that furniture business owners in Manggala District, Makassar City have 4 indicators of raw material availability, namely: estimated usage, material prices, inventory costs, and waiting time. And the level of competition has 6 indicators, namely: price, quality, customer loyalty, discounted prices, marketing techniques, target market. As well as entrepreneurial behavior has 4 indicators, namely: obstacles, risks, innovation, cooperation, where the results of the SWOT analysis that have been carried out, there are four strategic choices for furniture business in Manggala District, Makassar City, consisting of strengths opportunities (SO), weakness opportunities (WO). ), Strength threats (ST), and weakness threats (WT).

scholarly journals ANALISIS PENGENDALIAN PERSEDIAAN BAHAN BAKU PLAT BESI INDUSTRI KAROSERI MENGGUNAKAN METODE EOQ (Studi Kasus Pada PT. MISITAMA)

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Paduloh Paduloh
Keyword(s):  
Manufacturing Industry ◽  
Raw Materials ◽  
Secondary Data ◽  
Raw Material ◽  
Safety Stock ◽  
Total Cost ◽  
Reorder Point ◽  
Material Purchases ◽  
Total Inventory ◽  
Iron Iron

This study aims to analyze the optimal usage volume of iron raw plates required by PT. Misitama for the period of 2017. PT. Misitama is a company engaged in the field of tank manufacturing industry for the needs of manufacturing and mining industries. The study analyzed the total cost of Iron Iron raw material supply which must be used by PT. Misitama during 2017, analyzing reorder point, safety stock and raw material inventory control using EOQ method. The data used is the data of September 2017 - October 2017. The data used is secondary data derived from corporate data. The results show that the amount of raw material purchases during 2017 if using the EOQ method becomes lower. The optimal purchase of raw materials to be done by the company in 2017 is 14.8 m2 with the frequency of ordering to be done as much as 8 times. The quantity of safety stock (Safety Stock) that must be available in warehouse of 7 m2 and reorder point (reorder point) EOQ that is when the warehouse inventory is only 8.88 m2. Total inventory cost for production process issued by PT. Misitama by using EOQ method becomes smaller than the total cost of previous inventory.

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