A Study on Improving Warehouse Operations of Siamphan Salaya Co., Ltd. Using Simulation Techniques

Abstract

This research aims to enhance the efficiency of warehouse management at Siamphan Salaya Co., Ltd. through the application of simulation techniques. Data were collected through interviews with the business owner, and analytical tools including ABC Classification Analysis, Flow Process Chart, and Fishbone Diagram were employed. In addition, the FlexSim program was utilized to simulate warehouse operations. A simulation model was developed based on a random sample of 10 trials to determine the average processing time required for handling one item by a single employee in each process. The results indicated that the existing warehouse layout required an average processing time of 1,695.22 seconds, whereas the redesigned warehouse layout required an average of 1,254.16 seconds. This represents a reduction of 441.06 seconds, or 26.90 percent. Due to the low sales volume of certain products, the company has reduced inventory levels, resulting in increased available warehouse space. This additional space contributes to shorter picking times and improved product accessibility. Moreover, occasional staff absences may cause operational delays when substitute employees experience difficulty locating products, which further affects warehouse efficiency