Value Stream Mapping and Simulation Techniques for Considering Bottleneck Reduction Alternatives: A Case Study in A Sterile Pharmaceutical Factory
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Abstract
In today’s competitive market, pharmaceutical companies strive to meet international standards for their production methods while keeping an eye on production costs. Therefore, it is important to eliminate non–value–added activities. This research proposes a method to improve the process of sterile pharmaceutical factory of generic drugs through simulation techniques. Data needs to be collected on production volume, production cost, and cost of defect. In this study, a Pareto chart was used to identify a high–priority product that needed to be improved. A value stream map of the current process was created, providing a comprehensive overview, including bottlenecks. Plant simulation software (Tecnomatix®) was used to test by developing three different scenarios. The efficiency of production line balancing was increased by reducing the bottleneck in the filling process. The study analyzed the current process, which takes 2 days 5 hours 47 minutes 57 seconds. Three scenarios were then tested using plant simulation software. Scenario 1 involved adding additional labor, reducing the processing time to 2 days 1 hour 48 minutes 27 seconds (a decrease of 7.42%). Scenario 2 focused on labor rotation, achieving a time reduction to 2 days 4 hours 7 minutes 16 seconds (a decrease of 3.12%). Finally, scenario 3 explored changing machinery, resulting in the most significant improvement, with a processing time of 1 day 20 hours 27 minutes 12 seconds (a decrease of 17.37%). In scenario 3 reducing employee expenses by 6.00%, there is a cost for new machinery with a long–term return on investment, which is beneficial in cases where future production demand increases. Because the machinery can sufficiently contribute to enhancing efficiency in both quantity and quality aspects.
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