Abstract:
This study aimed to improve the quality inspection system of in-coming parts and production processes using a refrigerator factory as a case study. The objectives of the research were 1) to improve the efficiency of the quality system and provide the performance indication system to maintain continuously the efficiency of the operation, and 2) to ensure product reliability for the customer and prepare the operation for compliance with the ISO 9000 requirements. The quality inspection system was improved by 1) designing and improving the document system used in the quality inspection task including; quality policies, procedure manuals, work instructions, technical manuals, forms, and supporting documents for performance evaluation and corrective action, 2) setting the training courses for staffs and inspectors, and 3) developing the performance indication and corrective action system. The conclusion of the research was that the improvement of the quality inspection appeared to elevate the product quality. The result of this study showed that the rejection of in-coming parts was reduced by 22% and the quantity of the defective product by sampling inspection was reduced by 41%.