[1F01-04] Dose reduction

[1F02] Development of dose rate reduction technology for improving LWR utilization

(3)Results of Co-60 deposition test under simulated OLNC conditions

*Hideyuki Hosokawa¹, Naoshi Usui⁴, Hiromitsu Inagaki², Hajime Hirasawa³ (1. Hitachi, Ltd., Research & Development Group, 2. Chubu Electric Power Co., Inc., 3. Toshiba Corporation, 4. Hitachi-GE Nuclear Energy, Ltd.)

Keywords:reactor water recirculation system, cobalt, deposition, noble metal, zinc

In order to develop a computational model that can evaluate radioactivity incorporation into oxide film on structural materials in water chemistry that is being considered for future application in addition to the normal water chemistry of BWR, the relationship between oxide film structure and Co-60 incorporation in each water chemistry is experimentally investigated. In this presentation, the oxide film and the Co-60 incorporation result under HWC condition and noble metal chemical addition condition were examined.