Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Radiation effect on the corrosion of disposal canister materials

  • Received : 2023.06.07
  • Accepted : 2023.11.08
  • Published : 2024.03.25
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Abstract

The effects of radiation on the corrosion of canister materials were investigated for the reliable disposal of high-level radioactive waste. The test specimens were gamma-irradiated at a very low dose rate of approximately 0.1 Gy/h for six and twelve months. The copper and cast iron species were less corroded when irradiated. It is hypothesized that gamma rays suppress the formation of lower-enthalpy species like metal oxides and activate reductive reactions. In contrast, it was difficult to evaluate the effect of radiation on the corrosion of titanium and stainless steel.

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Acknowledgement

This work was supported by the Institute for Korea Spent Nuclear Fuel (iKSNF) and National Research Foundation of Korea (NRF) grants funded by the Korean government (Ministry of Science and ICT, MSIT) (2021M2E1A1085193, 2021M2E3A2041351).

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