Jurnal Optimasi Sistem Industri

Jurnal Optimasi Sistem Industri
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    252 research outputs found

    Evaluasi Kualitas Layanan terhadap Operator Telekomunikasi: Tinjauan Perspektif Pelanggan

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    PT Semen Padang is one of the subsidiaries of PT Semen Indonesia Tbk, which is one of the state-owned enterprises engaged in the business of cement production and trade. PT Semen Padang is now actively promoting synergies and pursuing the company's performance growth to be able to cope with competition in an increasingly tight and complex cement industry. In order to face this, it is necessary to have adequate human resource management from the company. One of the successes of company’s management is the availability of sufficient human resources with high quality, have integrity, professional in accordance with the functions and tasks of each personal and work unit. Since 2015, there has been an increase in overtime hours. This is due to the shortage of employees of PT Semen Padang. The reason is the number of employees who retired and there is no recruitment. Thus, there are some tasks that have not been implemented. In addition, in May 2016 one of the KPI's timely procurement points in the spare parts field was not achieved. Therefore, it is necessary to investigate the workload of employees and give a recommendation of the optimal employee needs for this bureau in the future. The study found that Buyer Bureau Procurement of goods PT Semen Padang has only 74.4% productive work time. It is because the actual number of buyers for the spare parts field is 6 people, while the number of buyers optimal based on the calculation is 8 people

    Pengukuran Beban Kerja Psikologis dan Fisiologis Pekerja di Industri Tekstil

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    The development of manufacturing industries are growing rapidly along with the progress of time and the increasing sophistication of technology today, one of which is a manufacturing company engaged in the textile field is PT Unitex Tbk Bogor. PT Unitex Tbk Bogor is a company that processes raw materials into semi-finished and finished materials such as cotton processing up into yarn or fabric. The production process costs physiological and psychological workload which could harm an operator at each work station. The packing work station has the highest workload due to its heavy workload and worker fatigue. This study measures the psychological work load by employing NASA - TLX method. On the other side, for evaluating physiological workload, the pulse rate and body temperature of the operators are measured

    PERANCANGAN MODEL PENGUKURAN KINERJA LEAN DAN GREEN RANTAI PASOK SEMEN SECARA TERINTEGRASI

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    PT. Semen Padang is one of the reputable cement companies in Indonesia which is producing types of cement. Implementation of supply chain concept in PT. Semen Padang is very important to satisfy customers and stakeholders requirement. Performance measurement is a process to evaluate the supply chain effectiveness and efficiency in lean and green aspect. The problem is how to design performance measurement model which is integrating lean and green supply chain concepts. The objective of research is integrating lean and green supply chain concepts to design supply chain performance measurement of bag cement type. Integration of lean and green concept is designed by Balanced Scorecard (BSC) perspectives that consist of financial, customer, internal process business and learning and growth. Key performance indicators (KPI) are formulated and classified based on BSC perspectives. Next stage is pair wise comparison process to the weight value. Evaluation of KPI pair wise comparison based is conducted on expert opinion which is selected by consideration of their relevance knowledge and experience. The process of pair wise comparison is calculated to determine priority of the KPIs based on weight value by using Analytical Hierarchy Process (AHP) method. The weight of KPI will be arrange by descending to determine the priority. Model of performance measurement is validated by face validity method. Research result is obtaining 25 KPIs that derived from integration of lean and green supply chain concept of bag cement type. Grouping is consisting of 3 KPIs of financial, 4 KPIs of customer, 11 KPI s of internal process business and 7 KPI s of learning & growth. Result is showing that customer is most prioritized element in supply chain of bag cement type. Implementation of proposing model is coordination of departments and employee in context of information accessibility

    Pemilihan dan Implementasi Strategi Peningkatan Kenyamanan Termal Ruang Kuliah

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    Optimum conditions help us think and work better. Thermal comfort in lecture buildings is important to maintain students’s comfort and help them concentrate on study. The fastest way to achieve expected thermal comfort inside the lecture room is using air conditioner, however, compensation on high electricity bills and degradation of the environmental quality has to be made. Therefore, the aim of this paper is to find and promote several environmental friendly strategies which can provide comfort to users in one hand, but also can reduce energy consumption in another hand. There have been several strategies in records to increase thermal comfort in buildings. To select the best and the most appropriate alternative, Analytical Hierarchy Process method was used by setting the criteria, sub-criteria, and alternatives to increase thermal comfort in lecture buildings of Andalas University. To test the selected alternative, thermal comfort inside two lecture rooms were evaluated experimentally. The comfort level was evaluated using PMV (Predicted Mean Vote) and PPD (Predicted Percentage Dissatisfied) model. For all experimental conditions, PMV and PPD results and individual thermal vote results showed a good match statistically meaning that the PMV and PPD models could predict thermal condition inside the lecture rooms. Results also showed that the presence of natural vegetation infront of glass windows of the lecture rooms statistically improved thermal comfort sensations of students under natural ventilation mode and reduced thermostat setting under air conditioning mode

    Desain Strategi Peningkatan Daya Saing Industri Pengolahan Makanan Ringan Berbasis Klaster di Sumatera Barat

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    Food processing industries have grown in the region of West Sumatra since a few decades ago. The processing of various types of food recipes from various West Sumatra region comes from inheritance hereditary. Snack is a processed food product that has a special attraction among various types of distinctive food from West Sumatra. Increasing competitiveness is necessary to accelerate the growth of small and medium snacks industries in West Sumatera. Industrial cluster development is one of the strategic and effective approaches to achieve that objective. The research aims to design value chain and industrial cluster map model of small and medium snacks industries in West Sumatra. Industrial cluster mapping carried through: defining the value chain, a grouping of factors influence the level of internal and external factors, factors condition processing, grouping factor conditions into the four elements of SWOT, strategy planning using SWOT Matrix, and creating industrial cluster map of snacks industries in West Sumatra. The results showed that there are 7 internal factors and 6 external factors that can influence the competitiveness of small and medium snacks industries in West Sumatra. The value chain of snack industry in West Sumatra includes tuber farmers, traditional market, special suppliers, small and medium snacks industries, and consumers. The study also generates 10 programs centered on small and medium snacks industries in West Sumatra as a core industry

    Penjadwalan dan Penentuan Rute Distribusi Komoditas ke Wilayah Timur Indonesia

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    Indonesia’s geographical conditions, particularly in the eastern region, which is archipelago has its own challenges in the distribution of commodities, such as rice. Most of the rice needed in eastern Indonesia, is still supplied from Java Island. The most suitable transportation mode for rice distribution in the eastern region of Indonesia, is by sea (ships). In this study, a ship routing and scheduling model for commodity distribution in the eastern region of Indonesia was developed, using capacitated vehicle routing problem (CVRP) method. The model was built by considering the number of demands on the destination, ship capacity, and ports service time. Modeling was developed to determine distribution route and schedule that can provide total minimum cost and meet all of the restrictions

    Manufaktur Berkelanjutan Pada Sampah Elektronik: Kasus Sampah Kulkas

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    The growth of the Wastes from Electric and Electronic Equipments (WEEEs) or e-waste is presently considered to be one of the rapid increasing wastes streams in the large city of Indonesia. Concurrently, the urban mining activities for e-waste by informal sectors have potential on the economic, social and environment dimension. The three dimensions form a triple bottom line that supports the principles of sustainability in the manufacturing. In this research, the observation in some remote areas in Padang is conducted to find out the model of e-waste collection system activities from the household and its economic potential, especially for refrigerators e-waste. The result shows that minimaly there are three models of the e-waste collecting system for refrigerator e-wastes. The model involves all the parties in urban mining activities such as e-waste collectorsfrom household, repair shops, collectors who continue the re-assembly and classify the e-waste and final collectors who did the cleaning, crushing, packing and transporting e-waste to another city to do the recycling process. In this e-waste collecting model the components of refrigerator e-waste could be reused, remanufactured and recycled. From the reassembly of therefrigerators it is obtained the material composition of 58.1% iron, 26.3% plastic,10.9% styrofoam 10.9%, 2.1% aluminum, 1.8% copper pipe, and 0.8% others. The highest cumulative retained value is obtained from this collecting system ranged between IDR 230.200 to 355.200, where some second-hand components may still be inreuse and remanufacture. This price is equivalent to 14.9% to 22.1% the purchase price of a new refrigerator

    Aplikasi Algoritma Hybrid dalam Penentuan Rute Pendistribusian Produk (Studi Kasus: PT. Enseval Putera Megatrading)

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    PT. Enseval Putera Megatrading is a company which operates in general business and distribution of pharmacy products, general needs, cosmetics, foods and hospital equipment. In their current practice, routing in products deliveries, which is limited by time windows, has not considered the utilization of vehicles' maximum loading capacities. Distribution route from a hybrid algorithm using heuristic clustering and Mixed-Integer Linear Programming approach can accommodate such problem with time windows and vehicles' capacities utilization. Based on the comparison between company’s current route and the route from the hybrid algorithm, it can be seen that the hybrid algorithm is able to decrease total distance and total cost of transportation. This new route concerns on vehicles allocation and time windows limit. This new route can minimize the total cost of transportation that company has to pay

    Analisis Penggunaan Alat dan Teknik Pengendalian Mutu dalam Penerapan Sistem Manajemen Mutu pada Perusahaan Karet Bersertifikat ISO 9001:2008

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    The increasing competition in the global market and high consumer expectations for quality products, encourage companies to be able to produce quality products which meets international standards. One of the activities in improving quality that conform to product specifications is applying appropriate quality control system involving all aspects of the company that are integrated with the standard ISO 9001: 2008 as a guide. However, the rubber industry in West Sumatra still faces obstacles in the implementation of quality control techniques and tools of as experienced by ABC and XYZ. This study aimed to evaluate the application of quality control tools and techniques in the manufacturing company which is certified ISO 9001: 2008, ABC and XYZ. This research was conducted by calculating the value of DPMO (Defect Per Million Opportunities). Based on the results found that the two companies have different DPMO value. PT ABC obtained by 5,2σ sigma level from DPMO value of 94.33 for the types of defects whitespot and sigma level of 4,2σ of DPMO value of 3365.096 to defect type of metal, while the XYZ obtain sigma level of 5,3σ from DPMO value of 728.697 for the types of defects whitespot and sigma level of 4,8σ of DPMO value of 425.441 for the type of metal defects. From the analysis it can be concluded that the two companies have not been effective in applying the techniques and tools of quality control in accordance with the standards ISO 9001: 2008 in order to achieve continuous quality improvement. This is indicated by the key success factor of the implementation techniques and tools of quality control is not applied appropriately in achieving continuous quality improvement

    Evaluasi Kualitas Layanan Nasabah dengan Metode Kano, Analisis Kuadran dan Triz Studi Kasus: Bank Nagari Cabang Pembantu Universitas Bung Hatta Padang

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    The banking industry is one of the pulse of Indonesian economic system. Bank Nagari is an industry aims to support the community’s economic development in West Sumatra. These objectives can be realized if Bank Nagari is able to face the existing challenges and problems. However, based on the preliminary studies, it was found a weakness in the bank services, such as the irreverent attitude of the tellers to the customers and long queues at certain times. Therefore, there is a need for a solution and quick actions so that Bank Nagari can improve customer satisfaction and provide excellent service to the communities. This study was conducted at Bank Nagari branch Bung Hatta University, Padang. Data is collected using questionnaire. The questionnaires were distributed to 97 respondents consisted of 24 variables and analyzed using the Kano method, quadrant analysis, and Theory of Inventive Problem Solving (TRIZ). The study proposed improvements to Bank Nagari branch Bung Hatta University, Padang. It is proposed to install a bulletin board or poster containing bank service procedures and information about bank services, to provide training to the bank employees, to focus on the frequent bank service problems and the evolution of the bank service system from traditional services to phone banking or internet banking

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