Abstract
Background: This study aims to protect workers and participants from occupational radiation exposure in non-destructive testing (NDT) laboratories located at the B.J. Habibie Science and Technology Park (KST) in Indonesia. These laboratories use X-ray and gamma-ray sources, specifically Ir-192 and Co-60 for research and certification purposes.Materials and Methods: The study used an experimental approach and evaluated radiationbased and also non-radiation-based NDT methods in compliance with the International Organization for Standardization (ISO) 9712 standards. Key radiation protection strategies included infrastructure optimization, shielding enhancement, and routine exposure monitoring using thermoluminescent dosimeters.Results and Discussion: The highest recorded annual occupational dose was just 3.32 mSv, well under the regulatory limit of 20 mSv, representing only 16.6% of the threshold allowed. The implementation of internationally recognized standards, including International Atomic Energy Agency General Safety Requirements Part 3: Radiation Protection and Safety of Radiation Sources (GSR Part 3), General Safety Guide No. 7 (GSG-7), Specific Safety Guide No. 46 (SSG-46), relevant ISO standards, and Nuclear Energy Regulatory Agency as known in Indonesia Badan Pengawas Tenaga Nuklir regulations, ensured regulatory compliance and the establishment of radiation safety framework within the certification body.Conclusion: The findings demonstrate that integrated safety practices, when aligned with national and international regulations, effectively minimize radiation exposure among NDT workers. The results provide practical insights for strengthening occupational radiation protection in other high-risk facilities and serve as a benchmark for continuous safety improvement and regulatory enforcement within Indonesia’s emerging industrial radiography sector.