Decommissioning of uranium facility, 3; Contamination inspection for cancellation the controlled area in Wastewater Treatment Area

Yamamoto, Keisuke; Nakagawa, Takuya; Matsuo, Kazuomi; Suguro, Toshiyasu

Wastewater Treatment Area was constructed to treat radioactive liquid waste generated at the uranium enrichment facilities. The interior equipment installed in this facility was to be dismantled and removed by 2023. After that, contamination inspection for cancellation the controlled area was conducted, and it was confirmed that there was no contamination in the targeted area. In addition, to reduce the amount of radioactive waste, contamination inspection and investigation of building usage history for confirmation of non-radioactive waste was performed on concrete and other building materials, and the results were found to be below the lower detection limit. This presentation shows the findings obtained through the work related to contamination inspection for cancellation the controlled area.