Decommissioning of uranium facility, 1; Outline of wastewater treatment area decommissioning

Nakanishi, Yoshiki; Owada, Mitsuhiro ; Aoyama, Yoshio ; Suguro, Toshiyasu

The uranium enrichment facilities at the Nuclear Fuel Cycle Engineering Laboratories of Japan Atomic Energy Agency (JAEA) were constructed sequentially to develop uranium enrichment technologies with centrifugal separation method and consisted of several facilities for R&D objectives. These developed technologies were transferred to Japan Nuclear Fuel Limited by 2001 and the initial goal was achieved. Wastewater Treatment Area, which was constructed treat radioactive liquid waste generated at the facilities, was to be decommissioned for the role of end and deterioration over time. Decommissioning of the facility included dismantling and removal of interior facilities and radiation measurements from 2003 to 2023 in preparation for cancellation the controlled area. This presentation is summary of the Wastewater Treatment Area decommissioning.