Design Implementation and Evaluation of Warehouse SOP of PT XYZ in Batam with DMAIC Approach

Abstract

PT XYZ, a CCTV distributor in Batam, faced significant operational challenges post-business reconstruction due to the absence of Standard Operating Procedure (SOP), causing inefficiency, inconsistency, and stock management issues in the warehouse. This study aims to design, implement, and evaluate warehouse operational SOPs using the Six Sigma DMAIC method to improve efficiency and accuracy. Through a qualitative approach with DMAIC (Define, Measure, Analyze, Improve) stages, problem identification, process mapping, root cause analysis (Fishbone Diagram), and solution development in the form of detailed SOPs (for inbound, storing, stock-taking, outbound), layout rearrangement, and a new stock-taking format were conducted. The results of the implementation trial show that the SOPs can be implemented consistently and provide significant performance improvements, as evidenced by a 63% decrease in stock taking duration and a 24% increase in accuracy. The application of DMAIC has proven effective in producing SOPs that can improve the efficiency and accuracy of PT XYZ's warehouse operations.