The anaerobic corrosion of carbon steel in alkaline media – Phase 2 results

N.R. Smart; A.P. Rance; P.A.H. Fernell; Bruno Kursten; Frank Druyts

The anaerobic corrosion of carbon steel in alkaline media – Phase 2 results

N.R. Smart, A.P. Rance, P.A.H. Fernell, Bruno Kursten, Frank Druyts

R&D Waste Packages

Research output › peer-review

Abstract

In the Belgian Supercontainer concept a carbon steel overpack will surround high-level waste and spent fuel containers and be encased in a cementitious buffer material. A programme of research was carried out to investigate and measure the rate of anaerobic corrosion of carbon steel in an artificial alkaline porewater that simulates the aqueous phase in the cementitious buffer material. The corrosion rates were measured by monitoring hydrogen evolution using a manometric gas cell technique and by applying electrochemical methods. Phase 2 of the programme has repeated and extended previous Phase 1 measurements of the effects of radiation, temperature and chloride concentration of the anaerobic corrosion rate. This paper provides an update on the results from Phase 2 of the programme. The results confirm previous conclusions that the long-term corrosion rate of carbon steel in alkaline simulated porewater is determined by the formation of a thin barrier layer and a thicker outer layer composed of magnetite. Anaerobic corrosion of steel in cement requires an external supply of water.

Original language	English
Title of host publication	International Workshop NUCPERF 2012: Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal: (RILEM Event TC 226-CNM and EFC Event 351)
Place of Publication	France
Pages	263-271
State	Published - Dec 2013
Event	NUCPERF 2012 on long-term performance of cementitious barriers and reinforced concrete in nuclear power plant and radioactive waste storage and disposal - CEA, Cadarache Duration: 12 Nov 2012 → 15 Nov 2012

Publication series

Name	EPJ Web of Conferences
Number	56

Conference

Conference	NUCPERF 2012 on long-term performance of cementitious barriers and reinforced concrete in nuclear power plant and radioactive waste storage and disposal
Country/Territory	France
City	Cadarache
Period	2012-11-12 → 2012-11-15

Cite this

Smart, N. R., Rance, A. P., Fernell, P. A. H., Kursten, B., & Druyts, F. (2013). The anaerobic corrosion of carbon steel in alkaline media – Phase 2 results. In International Workshop NUCPERF 2012: Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal: (RILEM Event TC 226-CNM and EFC Event 351) (pp. 263-271). (EPJ Web of Conferences; No. 56)..

Smart, N.R. ; Rance, A.P. ; Fernell, P.A.H. et al. / The anaerobic corrosion of carbon steel in alkaline media – Phase 2 results. International Workshop NUCPERF 2012: Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal: (RILEM Event TC 226-CNM and EFC Event 351). France, 2013. pp. 263-271 (EPJ Web of Conferences; 56).

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abstract = "In the Belgian Supercontainer concept a carbon steel overpack will surround high-level waste and spent fuel containers and be encased in a cementitious buffer material. A programme of research was carried out to investigate and measure the rate of anaerobic corrosion of carbon steel in an artificial alkaline porewater that simulates the aqueous phase in the cementitious buffer material. The corrosion rates were measured by monitoring hydrogen evolution using a manometric gas cell technique and by applying electrochemical methods. Phase 2 of the programme has repeated and extended previous Phase 1 measurements of the effects of radiation, temperature and chloride concentration of the anaerobic corrosion rate. This paper provides an update on the results from Phase 2 of the programme. The results confirm previous conclusions that the long-term corrosion rate of carbon steel in alkaline simulated porewater is determined by the formation of a thin barrier layer and a thicker outer layer composed of magnetite. Anaerobic corrosion of steel in cement requires an external supply of water.",

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Smart, NR, Rance, AP, Fernell, PAH, Kursten, B & Druyts, F 2013, The anaerobic corrosion of carbon steel in alkaline media – Phase 2 results. in International Workshop NUCPERF 2012: Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal: (RILEM Event TC 226-CNM and EFC Event 351). EPJ Web of Conferences, no. 56, France, pp. 263-271, NUCPERF 2012 on long-term performance of cementitious barriers and reinforced concrete in nuclear power plant and radioactive waste storage and disposal, Cadarache, France, 2012-11-12.

The anaerobic corrosion of carbon steel in alkaline media – Phase 2 results. / Smart, N.R.; Rance, A.P.; Fernell, P.A.H. et al.
International Workshop NUCPERF 2012: Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal: (RILEM Event TC 226-CNM and EFC Event 351). France, 2013. p. 263-271 (EPJ Web of Conferences; No. 56).

Research output › peer-review

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AB - In the Belgian Supercontainer concept a carbon steel overpack will surround high-level waste and spent fuel containers and be encased in a cementitious buffer material. A programme of research was carried out to investigate and measure the rate of anaerobic corrosion of carbon steel in an artificial alkaline porewater that simulates the aqueous phase in the cementitious buffer material. The corrosion rates were measured by monitoring hydrogen evolution using a manometric gas cell technique and by applying electrochemical methods. Phase 2 of the programme has repeated and extended previous Phase 1 measurements of the effects of radiation, temperature and chloride concentration of the anaerobic corrosion rate. This paper provides an update on the results from Phase 2 of the programme. The results confirm previous conclusions that the long-term corrosion rate of carbon steel in alkaline simulated porewater is determined by the formation of a thin barrier layer and a thicker outer layer composed of magnetite. Anaerobic corrosion of steel in cement requires an external supply of water.

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Smart NR, Rance AP, Fernell PAH, Kursten B, Druyts F. The anaerobic corrosion of carbon steel in alkaline media – Phase 2 results. In International Workshop NUCPERF 2012: Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal: (RILEM Event TC 226-CNM and EFC Event 351). France. 2013. p. 263-271. (EPJ Web of Conferences; 56).