Development and performance evaluation of a real-time verification sealing system (RVSS)

This study developed a Real-time Verifiable Sealing System (RVSS), employing advanced sealing technology to ensure nuclear activities are used only for peaceful purposes. The RVSS meets six design requirements: functionality, reliability, usability, integrity, remote verification and monitoring, and maintainability. It has a self-monitoring system with various tamper-detection sensors, detecting unauthorized access and generating integrity verification data. Additionally, the system alerts users and provides real-time diversion location during abnormal situations. For performance evaluation in intended usage environment, the environmental tests were conducted based on the international standard ISO-18185-3. Other evaluations included gamma and neutron radiation resistance tests, on-site testing at dry storage facilities for spent nuclear fuel in the Republic of Korea, and communication tests through concrete walls at nuclear facilities. The results validated the Remote Verification Sealing System's capacity to withstand significant environmental and radiation challenges and to maintain efficient communication through concrete barriers. The system is expected to significantly enhance the efficiency of safeguards measures through real-time verification.