Airborne Radioiodine Monitoring at Tokai Reprocessing Plant

摘要

A systematic configuration for airborne radioiodine (129I) monitoring in Tokai reprocessingplant (TRP) was reviewed. It consists of a weekly evaluation of exact discharged amount of 129I forassessing environmental impact and of a continuous monitoring of 129I being discharged for quickrecognition of unexpected effluent tendency. Furthermore, a sequential 129I monitoring system withoutinterference by the mingled 85Kr has been developed to enhance effluent monitoring during chopping anddissolution operations.