[3F05-09] Dismantling and Decontamination Technology 2

[3F07] A decontamination characteristic of the metal surface with Uranium hexafluoride

(1) Basic test used simulation sample

*Takuya Nakayama¹, Mitsuo Nomura¹, Yutaka Mita¹, Noritake Sugitsue¹, Hitoshi Yonekawa², Misako Bunbai², Yumi Yaita³, Eiichi Murata³, Katsumi Hosaka³ (1. JAEA, 2. JNFL, 3. Toshiba Energy Systems & Solutions Corporation)

Keywords:Uranium hexafluoride, Carbon steel, Corrosion, Decontamination, Water, Diluted acid, Functional electrolyzed water, Hypochlorous acid, Secondary waste

The metal surface exposed to uranium hexafluoride corrodes covering radioactive materials. We studied reasonably decontamination method. In this test, decontamination characteristics using water, diluted acid, functional electrolyzed water were evaluated using a simulated sample. As a result, we found that the oxidation-reduction potential of functional electrolyzed water affects decontamination performance.