Strategy for Defect Reduction and Operational Efficiency in the Production Process of Metal Products for Transformers at PT. Gemilang Jaya Prima Perkasa

This study aims to minimize defects and increase production time efficiency in the manufacture of transformer tanks to support the sustainability and competitiveness of the metal industry. Problems faced include process waste, late delivery, and production results that do not reach the target, which impacts quality and customer satisfaction. The method used is descriptive qualitative through field observations with analysis of Current State Value Stream Mapping, Fishbone Diagram, Value Stream Analysis Tools, and Future State Value Stream Mapping. The study focused on the welding, assembly, NDT test, finishing, and quality control processes for the 2023–2024 period which have high levels of waste and product defects, to formulate proposals for improving the production process.