Guidelines for Reducing Errors in Raw Material Account Clearance Processes Under the Board of Investment (BOI): A Case Study of a Manufacturing Plant in Chonburi Province
Keywords:
Thailand Board of Investment (BOI), Raw Material Clearance, Lean, ECRSAbstract
This research aimed to identify guidelines for reducing errors in raw material account clearance processes under the Board of Investment (BOI). The study was conducted on a case study of a factory in Chonburi Province that manufactures recreational vehicle components and has been granted BOI (Board of Investment of Thailand) investment privileges. The objective was to analyze the workflow covering raw material procurement under BOI privileges, importation, production, exportation, and final clearance. Data were collected through the review of relevant documents, including export declaration forms, Report-V, and error records from the Raw Material Tracking System (RMTS). The analysis revealed redundancies and non-value-added activities in the workflow. To address these issues, Lean principles and the ECRS approach (Eliminate, Combine, Rearrange, Simplify) were applied to distinguish value-added (VA), non-value-added (NVA), and necessary but non-value-added (NNVA) activities. The improved workflow eliminated unnecessary steps and streamlined processes. A key improvement was specifying BOI privileges directly in purchase orders, which reduced processing time from 120 minutes to 50 minutes—a 58.33% decrease. Consequently, the time spent on non-value-added activities was significantly reduced, while essential system activities became faster and more efficient.
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