Optimizing Plant Layout Design and Selection via SLP and AHP: A Case Study of Namwa Community Enterprise, Chiang Rai Province

Main Article Content

Harutairat Jantakard
Kumphol Wanglisakul
Jedsada Katosod
Chomphunut Phuangsubsin

Abstract

This research aims to design and select an optimal plant layout for the Namwa Community Enterprise by integrating Systematic Layout Planning (SLP) with the Analytic Hierarchy Process (AHP). The primary focus is to eliminate production wastes and prevent cross-contamination in accordance with Good Manufacturing Practice (GMP) standards. The methodology commenced with a material flow and activity relationship analysis using an Activity Relationship Chart (ARC) to develop three alternative plant layouts. Subsequently, the AHP technique was employed to determine the importance weights of
the eight types of production waste. Expert evaluations indicated that the top three critical factors were:
1) Defects (22.60%), 2) Inventory (21.57%), and 3) Inappropriate Processing (17.49%). The results demonstrated that Layout Alternative 3 was the most suitable option, achieving the lowest weighted waste score of 1.00, compared to 1.30 and 1.48 for Alternatives 1 and 2, respectively. The selected layout completely eliminated both backtracking and cross-contamination risk points, representing a 100% reduction for both indicators. These findings contribute to enhancing production efficiency and
the competitive advantages of agricultural businesses in Chiang Rai province sustainably.

Article Details

How to Cite
Jantakard, H., Wanglisakul, K., Katosod, J., & Phuangsubsin, C. (2026). Optimizing Plant Layout Design and Selection via SLP and AHP: A Case Study of Namwa Community Enterprise, Chiang Rai Province. Thai Industrial Engineering Network Journal, 12(1). retrieved from https://ph02.tci-thaijo.org/index.php/ienj/article/view/262109
Section
Research and Review Article

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