[1J13-18] Corrosion, Electrochemistry, Radiolysis 3

[1J17] Challenge toward extensive corrosion prevention in PCV system under the Influence of α/β/γ radiation

(5)Corrosion experiments under simulated irradiation conditions -Effect of hydrogen peroxide on carbon steel corrosion-

*Hiroshi Abe¹, Nobunari Takizawa¹, Yutaka Watanabe¹ (1. Tohoku Univ.)

Keywords:Corrosion, Radiolysis, Fukushima Daiichi Nuclear Power Station, Nuclear decommissioning, Ultra-fine bubble

In wet environments where α-/β-emitting radionuclides coexist with steel, the local oxidant concentration may be higher than in the conventional environment where only γ-ray irradiation is considered. In this study, hydrogen peroxide is regarded as an oxidant that accelerates corrosion. The corrosion experiments for carbon steels were conducted using hydrogen peroxide concentration as a parameter. This paper described the effects of relatively high concentrations of hydrogen peroxide on corrosion rates and corrosion behaviors of carbon steel.