scholarly journals Optimisasi Jumlah Produksi Menggunakan Model Newsboy dan Perencanaan Pengendalian Bahan Baku Menggunakan Material Requirement Planning (MRP)

2019 ◽  
Vol 2 (2) ◽  
pp. 88
Author(s):  
Bagus Ismail Adhi Wicaksana ◽  
Erni Suparti
Keyword(s):  
Raw Materials ◽  
Raw Material ◽  
Minimum Condition ◽  
Newsboy Problem ◽  
Perishable Product ◽  
Fresh Milk ◽  
Material Component ◽  
Calculation Results ◽  
Material Requirement ◽  
Internal And External Factors

A company have to do inventory control for available guarantying of material, component or item at the time to fulfill production schedule, and available guarantying of product become to consumer and take care of inventory at minimum condition. As object of research is CV. Cita Nasional located in Salatiga. Problems that exist in the CV. Cita Nasional often experience shortages of raw materials caused by internal and external factors. The approach taken to solve this problem by making a production plan using the Newsboy Problem because milk products including perishable product and raw material inventory planning (MRP). From the calculation results obtained the company must produce optimal demand every Monday to Sunday. While the raw material inventory plan using Economic Order Quantity (EOQ) method. Company decreased cost for fresh milk amounting to Rp.35.526.780 and decreased raw material expense cost for whey powder amounting to Rp. 22.573.650.

scholarly journals INVESTIGATION OF DECOMPOSITION OF PHOSPHATE RAW MATERIALS IN THE PRESENCE OF PEAT USING PHOSPHORIC ACID

2020 ◽  
Vol 55 ◽  
pp. 10-15
Author(s):  
Katerina I. Panova ◽  
◽  
Nicolay N. Pravdin ◽  
Аnatoliy О. Kiryanov ◽  
◽  
...  
Keyword(s):  
Nitric Acid ◽  
Phosphoric Acid ◽  
Raw Materials ◽  
Raw Material ◽  
Material Component ◽  
High Degree

In the process of decomposition of phosphate raw materials, the dynamics of transformation of its constituent mineral phosphoric components: fluorapatite and its derivatives into available for plants dihydro - and hydroorthophosphates of calcium and the influence of a natural organic activator on it are studied.. The composition of the obtained organomineral products was evaluated. The questions of intensification of processing of phosphorite in phosphate-peat systems with additional involvement of nitric acid are considered. The possibilities of reducing the amount of acidic reagents to 50% are shown, while guaranteeing a high degree of use of the target raw material component (94%) and the absence of waste.

scholarly journals ANALISIS PERENCANAAN BAHAN BAKU DI UD. AA DENGAN MENERAPKAN METODE MATERIAL REQUIREMENT PLANNING (MRP)

2020 ◽  
Vol 5 (1) ◽  
pp. 1-12
Author(s):  
Rudi Abdika Saputra ◽  
Inna Kholidasari ◽  
Susanti Sundari ◽  
Lestari Setiawati
Keyword(s):  
Lot Sizing ◽  
Raw Materials ◽  
Raw Material ◽  
Production Schedule ◽  
Material Requirements Planning ◽  
Forecasting Method ◽  
Material Requirement Planning ◽  
Material Requirement ◽  
Material Procurement ◽  
Master Production Schedule

This study discusses the application of the material requirements planning (MRP) method in the planning of raw materials in a furniture company. The purpose of this research is to know the planning of raw materials for furniture products in UD. AA, determine the most suitable inventory model to be applied to material inventory planning and analyze the role of the MRP system in raw material procurement planning. The forecasting method used is the quantitative method of time series analysis, determining the master production schedule, calculating lot sizing (LFL, EOQ, POQ methods). From determining the Master Production Schedule, it is found that the cabinet production plan for the next three months is 4 units per period or week, and based on the calculation of Material Requirement Planning (MRP) it can be seen what components are needed for the manufacture of cabinets, how many and when each component is required. Therefore it is obtained that the total raw material requirement for wood for the next three months is 11.34 m³.

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

Development of a Raw Material Requirement Balancing Model for a Production Process

2013 ◽  
Vol 824 ◽  
pp. 490-498
Author(s):  
B. Kareem
Keyword(s):  
Production Process ◽  
Raw Materials ◽  
Raw Material ◽  
Programming Approach ◽  
Good Tool ◽  
Cement Production ◽  
Optimal Mix ◽  
Material Requirement ◽  
Conventional Material ◽  
Crushed Limestone

Attainment of accuracy in raw materials mix for production processes has been the major problem in many production organizations in developing countries. Effects of unequal proportions of material required for a production process are not fully considered in the past studies. This study modeled the raw material requirements in a production process using proportionality based mixed linear programming approach. The objective was to find optimal mix of raw materials for the production of a unit tonnage of a product. The performance of the model was tested by comparing it with alternatively formulated model based on conventional material mix. This model was tested using a cement production system from which blasted limestone, crushed limestone; raw meal, gypsum, red alluvium, clinker and coal were used as raw materials. The conventional method of mixing materials led to 50 % surplus and shortage of materials in the process as compared with the new scheme. The model would be a good tool for accurate prediction of quantity of the raw material required in the production process.Nomenclature, the proportion of material used per ton of the processed product, the quantity of material in processed product (ton), the material proportional per ton of the product, andthe total quantity of materials needed per ton of the product,..., the counter for material type,..., the counter for material proportionality variant

scholarly journals Mixed magnesian binders using local silicate waste production

2021 ◽  
Vol 2131 (4) ◽  
pp. 042035
Author(s):  
E Lytkina
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
Mining Industry ◽  
Raw Material ◽  
Similar Process ◽  
Environmental Aspect ◽  
Waste Production ◽  
Material Component ◽  
Additional Processing ◽  
Technogenic Raw Materials

Abstract Today, the waste of the mining industry is more than 8 billion tons. Analysis of the literature data showed that most of the man-made waste that is generated as a result of the development of mineral deposits is suitable for use in many industries, in particular, in the production of building materials. The use of technogenic raw materials allows us to solve the following tasks: Environmental aspect - reducing the number of dumps and reducing their volumes. And this, in turn, improves the ecology of regions and territories. 2. Economic aspect - reducing the cost of construction products through the use of almost free raw materials, the release of more competitive products. Of course, it is necessary to provide that part of the costs will be spent on additional processing, revision, activation, modification of this technogenic raw material component. But today we have to think about how to clear the territory of substandard “waste rock” and use it to reduce the production and consumption of natural raw materials. A similar process can create waste-free production.

scholarly journals Model of Multi Product Classification with Regular Demand on Inventory System in a Raw Material Supply Company

2020 ◽  
Vol 17 (2) ◽  
pp. 170-178
Author(s):  
Tri Febrion ◽  
Joniarto Parung
Keyword(s):  
Raw Materials ◽  
Raw Material ◽  
Actual Condition ◽  
Lead Times ◽  
Alternative Product ◽  
Product Classification ◽  
Calculation Results ◽  
Distribution Company ◽  
The Right

The right strategy in inventory is the main point in maintaining adequate and guaranteed supply continuity. Inventory strategies are becoming important but complex when the number of items that must be prepared is increasing. In this regard, it is necessary to analyze the product groupings in several classifications. Prioritized products receive special attention.The same problem is faced by PT PEKA, an import raw material distribution company that has nearly 2000 product items. Based on data demand is known, that the company's demand does not have a fixed pattern. Many products have regular and irregular demand, even the number of regular demand is very volatile. Companies often experience excess stock or vice versa due to lack of stock demand according to predictions, long lead times and product self-life that varies. Related to this, alternative product groupings or classifications are needed in accordance with company conditions. The company currently has frozen and unfrozen products, has items made from natural and non-natural raw materials and has a short and relatively long lead time.PT. PEKA groups products in various stages, which lead to a combination of ABC and XYZ classifications. Demand of priority items generated from the grouping is then forecast according to the model that gives the smallest MSE / MAD. Furthermore, a case study was carried out to calculate the Total Relevance Cost (TRC) from the calculation results to be compared with the real TRC. TRC according to the classification results was Rp. 1,293,370,148, - lower than the actual condition TRC, which amounted to Rp. 1,805,887,874, -

scholarly journals Analisis Persedian Bahan Baku, Reorder Point dan Safety Stock Bahan Baku ADC-12

2020 ◽  
Vol 20 (2) ◽  
pp. 675
Author(s):  
Hazimah Hazimah ◽  
Yongki Antoni Sukanto ◽  
Nurlinda Ayu Triwuri
Keyword(s):  
Raw Materials ◽  
Raw Material ◽  
Economic Order Quantity ◽  
Order Quantity ◽  
Safety Stock ◽  
Reorder Point ◽  
Calculation Results ◽  
Descriptive Approach ◽  
Quantitative Descriptive ◽  
Optimal Calculation

The production process is very dependent on the availability of raw materials. An optimal calculation of raw material inventory is needed so that the company avoids the problem of lack or over stock of raw materials. This research aims to find out the quantity of raw material inventory, safety stock, and reorder point for ADC-12 raw materials.. This research uses a quantitative descriptive approach. Data sources obtained directly from the company. Analysis of the data used using the Economic Order Quantity method. Based on research and calculation results that have been done, if the company uses the EOQ method the quantity of raw material inventory is 80,861 kg. The quantity of the safety stock is 2,768 kg with a reorder point (ROP) of 14,038 kg.

scholarly journals Dampak Krisis Ekonomi Terhadap Kinerja Industri Susu Segar Dalam Negeri = The Impact of Economic Crisis Toword The Performence of Domestic Dairy Industry

Agro Ekonomi ◽  
2016 ◽  
Vol 10 (1) ◽  
pp. 34
Author(s):  
Dewa K.S Swastika ◽  
Nyak Ilham ◽  
Ikin Sadikin
Keyword(s):  
Economic Crisis ◽  
Raw Materials ◽  
Dairy Product ◽  
Dairy Industry ◽  
Production Capacity ◽  
Raw Material ◽  
High Price ◽  
Efficient Technology ◽  
Fresh Milk ◽  
The Impact

The Indonesian Dairy Industry wa.s well developed until mid 1997, due to some government protective policies, such as credit far imported dam cattle. and domestic market security. (;orernment determined the Milk Ratio (the ratio between domestic fresh milk and imported milk) that should he satisfied/ by the multinational milk processors (IPS) to run their milk processing lactories. However, the domestic .fresh milk production was not sufficient to meet the raw material far their Jactories. Therefore, in 1996, about 67% of raw materials has w he imported, especially from Australia and New Zealand, At least there were m.o/actors resulting a high import of dairy product. First, the domestic dairy production capacity was limited: second the Indonesian dairy industry was considered as inefficient, so that the price of domesticfresh milk was claimed to be more expensive compared to imported milk. The economic crisis starting from mid 1997, resulting in a high price of imported dairy cattle and feed. On the other hand, this crisis also resulting in a significant increase in price of imported milk. Therefore, the demand for domestic fresh milk by IPS was significantly increased The observations in 6 milk cooperatives (in East and West Java) showed that since economic crisis, all fresh milk offered by all cooperatives to IPS was absorbed. Even IPS provided some incentives (higher price and bonus).* the farmers who have a better quality of milk. There was also price adjustment given by IPS from about Rp. 600 hr in 1996 97 to about Rp. 900 and then about Rp. 1100 ltr in 1998 99. However, the farmers was still complaining. because if they compare milk price to rice price, they recognize that before crisis I liter milk was equivalent to 0.6 kg rice, but after crisis 1 liter milk was equivalent to only 0.4 kg rice. The most important issue that should be anticipated is that "if exchange rate of Rupiah to US Dollar is increased, then imported milk will be cheaper, and IPS will tend to import milk rather than buying domestic fresh milk If this case is happening, it will be a nightmare to farmers who do dairy farm. Therefore, the development and transfer of the more efficient technology in dairy industry should be given a high priority.

scholarly journals RAW MATERIAL INVENTORY PLANNING OF PATIENT MENU USING MATERIAL REQUIREMENT PLANNING (MRP) IN RSIA KENDANGSARI MERR SURABAYA

2021 ◽  
Vol 31 (1) ◽  
pp. 14
Author(s):  
Dewi Sri
Keyword(s):  
Raw Materials ◽  
Moving Average ◽  
Exponential Smoothing ◽  
Raw Material ◽  
Production Schedule ◽  
Purchase Order ◽  
Material Requirement Planning ◽  
Material Requirement ◽  
Master Production Schedule ◽  
Object Of Study

Introduction: Material Requirement Planning (MRP) is a technique or a logical procedure to translate the Master Production Schedule (MPS) of the finished goods or end item into the net requirements for some of the components needed to implement the MPS. MRP is used to determine the amount of material needs to support the Master Production Schedule and when the material needs to be scheduled.Methods: The study is conducted on 13 August 2018 until 12 September 2018 at the installation Nutrition RSIA Kendangsari Merr Surabaya. Collecting data in this study using several methods, including: observation- This stage is conducted in all parts related to the object of study, starting from the Purchase Order (PO) by a head cook up to raw material stored in the storage, discussion- author interviews and collects data to communicate and discuss with the respondents. Respondents in this study are the head of the nutrition unit and head cook of RSIA who have the authority doing the purchasing.Results: Planning of procurement of raw materials to the menu rawon in RSIA can use the Exponential Smoothing method. The discussion has compared two methods of forecasting and the results are consistent with the demand’s patterns of Simple Moving Average method, Exponential Smothing. Forecasting has the lowest error rate by using Exponential Smoothing. The second conclusion is a technique of determining the appropriate Material Requirement Planning in raw material procurement to menu rawon in RSIA is using Lot for Lot.

scholarly journals RESEARCH OF STRAW PYROLYSIS THERMAL EFFECTS FOR ESTIMATION OF POSSIBILITY ITS IMPLEMENTA-TION IN AUTOTHERMAL MODE

2019 ◽  
pp. 271-280 ◽  
Author(s):  
Aleksandr Vladimirovich Astafev ◽  
Roman Borisovich Tabakaev ◽  
Dias Erlanovich Musafirov ◽  
Aleksandr Sergeyevich Zavorin ◽  
Yuriy Vladimirovich Dubinin ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Thermal Effect ◽  
Thermal Effects ◽  
Raw Materials ◽  
Laser Flash ◽  
Raw Material ◽  
Exothermic Reactions ◽  
Calculation Results

The aim of the work is research of straw pyrolysis in various modes, the determination of process thermal effects and estimation of straw thermal processing possibility in the autothermal mode. Physical experiment and differential thermal analysis were used as research methods. Thermotechnical characteristics of raw materials are determined by ISO 1171:2010, GOST R 55660-2013 and a bomb calorimeter; thermal and physical characteristic are determined by the analyzer of thermal diffusivity Discovery Laser Flash DLF-1200. In result of the work is established that thermal effects occur in the straw after heating to 200 °C. The first shows of exothermic reactions are observed when the reactor is heated to 303 °C – in this case the temperature of the straw reaches 308.8 °C. By differential thermal analysis is established that the temperature range of heat input was set from 235 to 575 °C and value of the thermal effect in this range was set 1475 kJ/kg. For this range, the heat costs for the organization of pyrolysis in the autothermal mode and the total thermal effect of the process are calculated. The calculation results showed that the maximum thermal effect (398.9 kJ/kg) can be obtained at a pyrolysis temperature of 460 °C. For these conditions, the influence of the initial straw moisture content on the autothermality of pyrolysis process was evaluated and it was established that process can be organized due to its own thermal effects when the raw material moisture is less than 30.5%.

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