<p><em>Line balancing is a jobs assignment into a number of work stations that are interrelated in a track or a production line with an objective to minimizing the idle time on the line that is determined by the slowest operation. In line welding 1DY models includes eight work stations where one work station is done by one operator. Problems have been found that these operators have very long idle time and also there is too much wip that creates bottleneck in the production line so these leads to a waste of manpower and time. This waste of manpower and time need to be reduced by determining the optimal amount of labor in order to avoid excessive idle time but work can be done effectively and efficiently. One way to adress imbalance line is to apply line balancing methods.The results of this research shows that the line balancing methods can reduced the waste of time and give solutions for the optimal amount of labor requirements for line welding 1DY models.</em></p><p>Keywords: Line Balancing, Workstation, Production Line, Idle Time, Bottleneck.</p><p><em><br /></em></p>
PendahuluanSupplier didefinisikan sebagai suatu organisasi penyedia sumber daya yang dibutuhkan oleh pelanggan (customer) baik dalam bentuk material atau non material (layanan). Dalam sebuah perusahaan, kebutuhan bahan baku ataupun komponen yang dipasok oleh supplier merupakan salah satu faktor penting dalam suatu lini produksi [1]. Karena itu, proses pemilihan supplier merupakan masalah pengambilan keputusan yang penting. Dengan supplier yang tepat, dapat meningkatkan daya saing perusahaan. Dalam melakukan pemilihan supplier juga berorientasi pada pentingnya kelangsungan hubungan dan konsistensi menjaga produktivitas dan mutu produknya. Perusahaan juga harus bekerja sama dengan supplier agar mampu meningkatkan kepuasan bagi pelanggan [2]. Pemilihan supplier adalah permasalahan multi kriteria, dimana setiap
Production process at PT. Showa Indonesia Manufacturing is not always smooth, due to the ignorance of the reliability of the machine.Breakdown can occur at any time and cause uncertainty of the availability of machinery in the production process, causing considerable losses to the company. This study was conducted on a compressor machine used to produce the pressurized air that used to run the production machinery. Based on the research, the highest damage level is on the compressor machine 4, 8, 10, 5, 16, and 6 with total damage of 70.1%. This is due to the complex machine system and the less optimal maintenance system. Reliability Centered Maintenance (RCM) method is used to analyze the system to identify components that fall within the critical category. The results of the analysis, obtained some critical components which required optimal replacement interval by minimizing downtime. Further planning activities on each critical component is based on FMEA and RCM Decision Worksheet. With the application of RCM method, total downtime decreased by 44.59% from previous preventive actions.
The coating process is the process of covering the tablet with a thin layer of substance which generally has very little effect. The process coating process uses a Driam machine and the machine has a very high utilization of 125%. The company's ability to provide additional salute machines requires time in its investment, remedial efforts to reduce the damage level of the salute machine are needed so as not to increase machine utilization, while the damages that occured in the coating process from January to December 2016 are Speed Pump, Air Flow Damper, Spray Gun, Supply Compressed Air, Steam, Pan Speed, & Wind Hose. From the background of the problem the company needed repairs that were useful to reduce the level of damage to the salute machine. These improvements are carried out using the Plan Do Check Action (PDCA) method. The PDCA method is a repetitive process improvement activity to solve a problem in quality control and is included in the Total Quality Management (TQM) in which TQM is the application of quantitative methods and human knowledge to improve materials and services which of course improves processes and efforts to meet customer satisfaction . The level of damage to the machine salute has decreased after repairs to the engine damage Pump Speed & Air Flow Damper where it eliminates 2 of 7 damage that occurs in the coating process or by 45.6% of the total damage.
PT XYZ is a company that produce tools, machine parts, and special purpose machines. Based on data from the production department, there are some products with high defect and then need rework. This condition would be very harmful because it will increase the cost that should not be necessary.
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