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Potential influence of microorganisms on the corrosion of carbon steel in the French high-level long-lived radioactive waste disposal context at 80°C
RISE Research Institutes of Sweden, Materials and Production, Corrosion. (Institut de la Corrosion)ORCID iD: 0000-0002-6347-994x
Corrodys, France.
Corrodys, France.
ANDRA Agence nationale pour la gestion des déchets radioactifs, France.
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2023 (English)In: Materials and corrosion - Werkstoffe und Korrosion, ISSN 0947-5117, E-ISSN 1521-4176, Vol. 74, no 11-12, p. 1795-Article in journal (Refereed) Published
Abstract [en]

In this study, experiments were carried out to assess the microbially influenced corrosion (MIC) risk in the context of the French high-level radioactive waste disposal. The exposures were carried out at 80°C in different repository relevant conditions, including the presence of different cement-grout mixtures as filling material. Biotic conditions with nutrient and nonsterile conditions with indigenous microbes added from Callovo Oxfordian clayey rock and without nutrients were considered. For biotic conditions, specific preparations of microbial inoculum were carried out from samples collected at Andra's Underground Research Laboratory and microorganisms from microbial culture collection centers. Corrosion kinetics were determined using traditional coupons and completed with real-time corrosion sensors. Microbiological characterizations consisted of cultural approach, quantitative polymerase chain reaction, and next-generation sequencing. The obtained results show no significant MIC and a reduced risk with the use of more alkaline filling material. © 2023 The Authors. 

Place, publisher, year, edition, pages
John Wiley and Sons Inc , 2023. Vol. 74, no 11-12, p. 1795-
Keywords [en]
carbon steel, cement, claystone, corrosion, disposal, microbially influenced corrosion, radioactive waste, Alkalinity, Cements, Microorganisms, Microwave integrated circuits, Nutrients, Radioactive wastes, Radioactivity, Research laboratories, Risk assessment, Steel corrosion, Biotic conditions, Cement grouts, Claystones, Condition, Corrosion risk, Filling materials, High level radioactive waste disposal, Long-lived radioactive wastes, Microbially-influenced corrosions, Polymerase chain reaction
National Category
Microbiology
Identifiers
URN: urn:nbn:se:ri:diva-66092DOI: 10.1002/maco.202313899Scopus ID: 2-s2.0-85167687231OAI: oai:DiVA.org:ri-66092DiVA, id: diva2:1790509
Note

Correspondence Address: E. Diler; Institut de la Corrosion (RISE), Brest, 29200, France; 

Available from: 2023-08-23 Created: 2023-08-23 Last updated: 2024-06-10Bibliographically approved

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