Corrosion of carbon steel components in the French high-level waste program evolution of disposal concept and selection of materials. - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Access content directly
Journal Articles Corrosion Engineering, Science and Technology Year : 2017

Corrosion of carbon steel components in the French high-level waste program evolution of disposal concept and selection of materials.

D. Crusset
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V. Deydier
  • Function : Author
S. Neycib
  • Function : Author
Jm. Gras
  • Function : Author
P. Combrade
  • Function : Author
E. Burger
  • Function : Author

Abstract

In France, the reference concept for the geological disposal of high-level waste (HLW) consists of horizontal micro-tunnels, containing carbon steel casing and overpacks (around a stainless steel container containing vitrified waste). The overpacks and casing will be exposed to an environment that will evolve over time: from a hot and humid atmosphere containing oxygen, to an anoxic environment saturated with water at the geothermal temperature. Lots of corrosion experiments have been performed in representative environments to study steel corrosion modes (general corrosion, pitting and crevice corrosion, stress corrosion cracking, hydrogen embrittlement…) while taking into account the influence of temperature, radiation, mechanical stresses and microorganisms. Some key results have influenced the design of the HLW disposal cell, including the carbon steel grades and dimensions of the casing and overpacks, or the addition of an alkaline grout material between the casing and the host rock.

Dates and versions

cea-02421903 , version 1 (20-12-2019)

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D. Crusset, V. Deydier, S. Neycib, Jm. Gras, P. Combrade, et al.. Corrosion of carbon steel components in the French high-level waste program evolution of disposal concept and selection of materials.. Corrosion Engineering, Science and Technology, 2017, 52, ⟨10.1080/1478422X.2017.1344416⟩. ⟨cea-02421903⟩

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