PRODUCTION EFFICIENCY INCREMENT OF ELECTRICAL EQUIPMENT CONTROL CABINET IN THE RAIL INDUSTRY

Abstract

This study is the improvement of production process efficiency of electrical control cabinet for the rail industry. The major proposes for efficiency increment and wastes reduction process. By the existing production efficiency result is lower than to target at 90% of the average total production. From the production data, it is found that in the production process has many delays with wastage of production time. Using the QC tools for analysis the problem included the Pareto diagram and Cause and Effect diagram. The main cause of the production process is waiting time, which is the bottleneck including the loss time in process of technical control circuits design for the M & E control system and installation of electrical circuits wiring terminations that are the major problems. Therefore, the solution is proposed by revised work process and production line balancing improvement of the production period with cycle time to improve the production process to be standardized system.

The results of the improvement show that the average of delays time is reduced by 54.7 hours / unit by decreasing from 66.3 hours / unit to 17% loss time reduction, then resulting in the productivity has been increased the production rate by 79% to 97.6%, which achieve the goal of more than 90% as specified. The efficiency measuring of prototype products delivering for the standard mass product is the average increased by 80.3% from 67%, then the total summaries increasing the average of all production rate from 81.4% to 94%. Measuring investment and income can be increased the average total income by 26% or 7,243,212 baht. Moreover, the overall product deliverables on time as scheduling and reduce costs of overtime expenses.