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Evaluasi Kinerja Pemeliharaan PLTA dengan Pendekatan Maintenance Scorecard dan Objective Matrix (OMAX) (Studi Kasus Unit Pembangkit Listrik Tenaga Air Maninjau)
Get PDFHydropower is one of the power plants that supplies electrical energy. It has several machines and equipment that have a time limit of use. To anticipate the limitation of the use, maintenance of machinery and equipment are needed in order to return its original state and can perform its function as usual. Therefore some indicators required to determine maintenance work performance level to provide the optimal results. The Traditional measurement methods have some limitations that make it difficult to implement in industrial environments. This requires a performance measurement method that can provide a balanced perspective on the overall system performance. One of them is implementing the Maintenance Scorecard and Objective Matrix (OMAX) method to assess the performance of hydropower maintenance. Objective research in this assessment is to integrate Maintenance Scorecard and Objective Matrix (OMAX) approach in Maninjau Hydropower. Key Performance Indicators (KPI) are defined by 6 perspectives: productivity perspective, cost effectiveness perspective, a safety perspective, an environmental perspective, quality perspective and learning perspective. The priorities are determined by using Analytical Hierarchy Process (AHP). We then measure the performance of maintenance by using Objective Matrix (OMAX) until we get the level of achievement of the performance in the current situation.The results obtained in the process of designing the scorecard maintenance on the Maninjau hydropower that produces overall 20 KPI consists of 9 KPI for productivity perspective, 4 KPI for quality perspective, 2 KPI for safety perspective, 2 KPI for environmental perspective and 3 KPIs for learning perspective. There are 5 KPIs for corporate level, 8 KPIs for strategic level and 7 KPIs functional level. The operation results show the number of KWH that produced, Capacity Factor and Equivalent Outage Force Factor are in the yellow zone. It means the attentions and improvements are needed to improve performance in the next period
Model Penentuan Ukuran Batch Produksi dan Bufferstock untuk Sistem Produksi Mengalami Penurunan Kinerja dengan Mempertimbangkan Perubahan Order Awal
Get PDFThis study develops a model that involves information the preliminary order. At first, the manufacturer provides the preliminary order for the coming week (five days) varies from day to day and is received on Friday. Change in the preliminary order for a given day is announced one day before and this is viewed as it occurs randomly. Moreover, production systems experience performance degradation (deterioration). Status of the production process shifts from in control to out of control that is identified by the last inspection. Inspection is done by sampling. At the time of the status of out of control the probability of producing non-conforming system component that is charged to the restoration cost and warranty costs.This paper is looking for a solution for determining the production batch size and the buffer stock to reduce total cost. The decision variables are production run period (T) and buffer factor (m). Having obtained the variables T and m, then the variable production batch size (QT) and the buffer stock (BT) can be determined sequentially. Heuristic methods used are Silver-Meal (SM) and Least Unit Cost (LUC) to obtain a solution for each model. Numerical examples are given to demonstrate the performance of the models. From the numerical results, it appears that LUC method is better than SM method
Perencanaan Sistem Persediaan Bahan Baku Industri Garmen di PT. DM
Get PDFOne of the effort to presence with global competition in the era of the Asean Economic Community (AEC) in 2015, making it the various parties, both government, private, and Small and Medium Industries (SMEs) to compete with products made in ASEAN countries. One of the things that can be done is to make the efficiency of the production costs. For that, we need a production planning and control are very closely related to the raw material. The presence of raw materials becomes important because if there is a shortage of raw materials, will inhibit the production process. If the stock overload can make an effect on the cost savings that can increase the cost of the company. IKM DM is one of the industry that concerned to the manufacture of clothing garment, especially to the shorts. The Problems that are often faced by SMEs is the frequent occurrence both in the warehouse overstock raw materials and finished goods warehouse. It is necessary for research in determining the amount of raw materials in the warehouse, so that capital is not held long. This study only focus to three kinds of pants that has all size model, big size type, and type pants buckle. The purpose of this study is predicting the number of requests using the ARIMA period of 3 months in April, May, and June 2014; planned economic order quantity and raw material ordering schedule using the EOQ method. The study also discusses the raw materials inventory system either periodically or in a perpetual; and ends with the calculation of the limitations of the warehouse. Forecasting pants all size in April, May and June respectively 30 840, 31 962, and 32 357 pieces; the big size pants are 8.645,8.782, and 8782; and the buckle pants are 4,960, 4,980, and 4,980 pieces. As for the number of ordering raw materials at economical polly cloth pants all size, buckle, and the big size of 45 562-yard; 17 684; and 25 534 yards. As for the scheduling of raw materials in the all size type, big size type, and the buckles have ROP values of 4.470,1.382, and 660 yards. The frequency ordering as many as 6 times, 3 times, and 2 times with intervals of 30 days, 64 days, and 80 days. From the calculation of the inventory system, obtained perpetual method has the smallest cost. For the calculation of the limitations vast storehouse of raw materials needed 4 shelves for storage of accessories with a total area of 107m2, with a total of 144m2 warehouse area
Perancangan Sistem Informasi pada Bagian Gudang PT. PN VI Unit Usaha Ophir
Get PDFSistem Informasi adalah sistem buatan manusia yang terdiri dari komponen-komponen dalam organisasi untuk dapat menyajikan informasi . Sebuah sistem informasi yang baik dapat meningkatkan kinerja dari semua kegiatan dalam perusahaan yang didukung oleh data yang akurat dan lebih aman , sehingga semua kegiatan dapat berjalan lebih efektif. PTPN 6 Satuan Usaha Ophir adalah salah satu perusahaan yang bekerja di industri manufaktur pengolahan minyak sawit . Salah satu bagian dari perusahaan ini yang penting adalah penyimpanan . Hal ini penting di gudang adalah pencatatan data barang yang ada . Dalam bagian ini ada sistem yang kurang baik dimana pencatatan data secara manual sehingga dapat mempengaruhi munculnya kesalahan . Oleh karena itu, dibutuhkan perancangan suatu sistem informasi item data sehingga waktu yang dibutuhkan untuk mencari data tidak panjang dan menyederhanakan aliran informasi. Perancangan sistem informasi ini melalui beberapa tahapan dimulai dengan survei pada perusahaan , masalah identifikasi , analisis sistem , desain model menggunakan UML dan akhirnya dengan merancang sistem informasi dengan menggunakan database dan aplikasi dengan PHP – MySQ
Algoritma Heuristik untuk Menentukan Biaya Crashing Minimum pada Project Network dengan Dua Jalur Kritis: Studi Kasus Proyek Produksi Electrical House oleh PT X
Get PDFPT X is a company engaged in the production of the module, ship relay station (Electrical House)as well as oil and gas mining equipment. The company uses a project-based production system in the production process of that equipment. Type of project usually performed is the Engineering-Procurement-Construction (EPC) project. EPC is a type of project that involves process engineering, material procurement, and products construction. PT X main product is a module or electrical house (E-House). Activities can be disrupted by a variety of conditions in the project implementation phase, such as weather and other unforeseen events. These conditions can hamper the process and affect the performance on the field.Activity scheduling and load out process which often suffer from delays caused project deadlines are often past the limit is given by the client. As in the case of E-House project examined in this study, its implementation has been delayed and should be accelerated for 8days. Therefore, the crashing project can greatly assist in adjusting the implementation plan with the actual condition. Crashing project analysis conducted based on project network diagram. The critical path is determined using Critical Path Method (CPM). Based on analysis results, project execution time can be shortened up to 8 days earlier. (From the normal time of 94 days to 86 days) at the cost $ 4.203.093,25
Usulan Indikator Evaluasi Pemasok dalam Penetapan Bidder List: Studi Kasus Pengadaan Jasa PT. Semen Padang
Get PDFEach company will seek to improve performance in order to obtain the optimal results and customer satisfaction. One of the factors that affect the performance of the company is the supplier or vendor, which acts as a supplier of the operational needs of the company consisting of raw materials and spare parts manufacturing equipment. The existence of suppliers is crucial for the production process and the product to be produced. Therefore, it is necessary to a proper selection of suppliers so as to eliminate all risks that would result in losses for the company. PT. Semen Padang is one of the companies involved in the cement industry is one of the members of PT. Cement Indonesia as the Holding Company. Until now both PT. Semen Padang and PT. Cement Indonesia does not have yet a standard method in the selection of suppliers for the procurement process of goods and services. This study aims to design the proposed indicator in the evaluation of suppliers to determine the bidder's list on a tender for the procurement of services in PT. Semen Padang. Based on the literature study, it obtained six criteria i.e: quality, delivery, performance history, price, technical capability, and procedural compliance, which are divided into 13 indicators of performance evaluation. These indicators will be validated by the cement industry. Future studies will design a model of evaluation of suppliers using Analytic Hierarchy Process (AHP) method to determine the bidder's list on a tender for the procurement of services in PT. Semen Padang
Pembuatan Knowledge Management pada External Cylindrical Grinding
Get PDFKnowledge management is a process that helps an organization or company in identifying, selecting, preparing, distributing and sending important information and expertise part of an organization or a company to change the behavior or attitude that is not in place. Grinding processes are usually based on the experiences of people who have are experts in their work (tacit knowledge) that will be collected and converted into explicit knowledge so that the information can be maintained and easily accessible.The design began by analyzing the external cylindrical grinding systems and translate them into Unified Modelling Language (UML) which was followed by the design of database and computer software, and test the software. The application software is web-based and can be accessed by multiple users. The application will help the operator in determining parameters with given option of parameter recommendation. The system gives recommendations based on the tacit knowledge that has been gathered into explicit knowledge. The output of the application is a list of selected parameters and report cases. Report data in the case will be used to set up the machine
Optimalisasi Proses Perakitan Pesawat Tanpa Awak dengan Metoda Critical Path Methods (CPM)
Get PDFThe manufacturing of Unmanned Aerial Vehicles (UAV) requires a design process that involves the design of aircraft’s components such as fuselage, wing, horizontal stabilizer, vertical stabilizer, ailerons, elevators, tail, and wing. The process takes a long time. Therefore, the distribution of structural works based on their characteristics and classifications by considering their design attributes and manufacturing processes is required. This research aims to find the optimal time and critical path of the assembly process of an UAV based on product work breakdown structure (PWBS) and critical path method (CPM). The result reveals that the optimal assembly time is 139 minutes. Finally, the application of product-oriented structural work distribution and the optimization of the assembly activities involved in the critical path successfully minimize the duration of the assembly process
Pengurangan Bullwhip Effect dengan Metode Vendor Managed Inventory
Get PDFInformation distortion caused PT Multi Sarana Indotani got higher demand than the distributor. Demand variability in each echelon of the supply chain (bullwhip effect) may occur due to lack of demand stability that the producer had difficulty in determining the amount of production. One of the collaboration methods that can be applied to overcome the information distortion as causes of the bullwhip effect is vendor managed inventory, where the needs of distributor and retailers monitored and controlled by the producer. In this case, vendor managed inventory applied to two echelons, producer, and distributor
Perancangan Konfigurasi Tinggi Setang, Sadel, dan Pedal Sepeda yang Ergonomis
Get PDFThe bike is still one of the favorite modes of transportation as it is cheaper and environmentally friendly. However, some problems still arise in current bicycle design, one of which is a discrepancy between dimensions of the bike with anthropometry of the user. This has resulted in unneutral and uncomfortable posture for the users. This study focuses on providing optimum configuration of distance from saddle to pedal, the height of handle-bar, and distance from handlebar to saddle of the bike. Some physiological parameters such as the percentage of CVL (cardiovascular limit), energy consumption and Posture Evaluation index are measured to determine the optimum distance of handle-bar, distance from handlebar to saddle, and distance from saddle to pedal. Results show that it is necessary to modify the current dimension of the bike to accommodate three posture categories of Indonesia population: small posture (P5), medium (P50) and large posture (P95).