The Prediction of Tritium Level Reduction of Wolsong NPPs by Heavy Water Detritiation with WTRF

The amount of the tritium removed from the Wolsong NPPs after the WTRF operation start was simulated through the modeling of the tritium balance between the Wolsong NPPs and the WTRF. Five WTRF operating scenarios were proposed and the profiles of the tritium level depending on these scenarios were obtained from the simulation. It was predicted that about 9×10¹⁷ Bq/yr of tritium would be removed in the beginning of WTRF operation. However the tritium levels in the moderators will be steadily reduced and saturated less than 3×10¹¹ Bq/kg in 2013, and then about 2×10¹⁷ Bq/yr of tritium will be removed from the Wolsong NPPs by the WTRF operation.