การพัฒนาระบบคลังสินค้าแก๊สแอลพีจีแบบเว็บแอปพลิเคชันเพื่อเพิ่มประสิทธิภาพการบริหารจัดการสินค้าคงคลังในระบบห่วงโซ่อุปทาน

Krit Chaiwannakoop; Suraphon  Chumklin; Manit  Puangbangpo; Phanuwat  Khanja

Authors

Krit Chaiwannakoop Program in Computer Science, Faculty of Science and Technology, Uttaradit Rajabhat University, Uttaradit
Suraphon Chumklin Program in Computer Science, Faculty of Science and Technology, Uttaradit Rajabhat University, Uttaradit
Manit Puangbangpo Program in Information Technology, Faculty of Science and Technology, Uttaradit Rajabhat University, Uttaradit
Phanuwat Khanja Program in Computer Engineering, Faculty of Industrial and Technology, Uttaradit Rajabhat University, Uttaradit

Keywords:

LPG gas, Web application, Inventory management system, Supply chain

Abstract

This research aimed to develop a web-based LPG inventory management system to support inventory management for gas filling plants, distributors, and retail stores, and to evaluate the system’s efficiency, user satisfaction, and effect on operating cost reduction. The study employed a Research and Development (R&D) approach. The participants and evaluators consisted of 12 experts in information technology and computer science, inventory management, and software development, and 35 system users. The research instruments included a system efficiency evaluation questionnaire and a user satisfaction questionnaire, both using a five-point Likert scale. The questionnaires covered system ease of use, system response speed, data accuracy, continuity of use, overall system functionality, product tracking and reporting capability, and benefits to inventory management. Data were analyzed using the mean, standard deviation, and percentage to compare operating costs before and after system implementation. The results showed that the developed system supported product data management, product pricing, gas filling orders, purchasing, delivery, payment, and inventory control. The system also enabled real-time tracking of LPG cylinder status at each stage of the distribution process. Reorder Point (ROP) and Economic Order Quantity (EOQ) models were applied to support appropriate inventory level and order quantity decisions. The overall system efficiency was rated at the highest level, with a mean of 4.73 and a standard deviation of 0.44, while overall user satisfaction was also rated at the highest level, with a mean of 4.82 and a standard deviation of 0.37. In addition, production costs at the gas filling plant decreased by 46.28%, while transportation costs for distributors decreased by 31.42%. The findings indicate that the developed system can effectively support LPG inventory management, improve operational efficiency, and reduce operating costs throughout the LPG distribution process.

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