Validation of Water Radiolysis Models Against Experimental Data in Support of the Prediction of the Radiation-Induced Corrosion of Copper-Coated Used Fuel Containers
Copper has been proposed as a container material for the disposal of used nuclear fuel in a number of countries worldwide. The container materials will be subject to various corrosion processes in a deep geological repository, including radiation-induced corrosion (RIC) resulting from the γ-irradiat...
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| Language: | English |
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MDPI AG
2025-04-01
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| Series: | Corrosion and Materials Degradation |
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| Online Access: | https://www.mdpi.com/2624-5558/6/2/14 |
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| author | Scott Briggs Mehran Behazin Fraser King |
| author_facet | Scott Briggs Mehran Behazin Fraser King |
| author_sort | Scott Briggs |
| collection | DOAJ |
| description | Copper has been proposed as a container material for the disposal of used nuclear fuel in a number of countries worldwide. The container materials will be subject to various corrosion processes in a deep geological repository, including radiation-induced corrosion (RIC) resulting from the γ-irradiation of the near-field environment. A comprehensive model is being developed to predict the extent of RIC by coupling a radiolysis model to the interfacial electrochemical reactions on the container surface. An important component of the overall model is a radiolysis model to predict the time-dependent concentration of oxidizing and reducing radiolysis products. As a first step in the model development, various radiolysis models have been validated against experimental measurements of the concentrations of dissolved and gaseous radiolysis products. Experimental data are available for pure H<sub>2</sub>O- and Cl<sup>−</sup>-containing solutions, with and without a gas headspace. The results from these experiments have been compared with predictions from corresponding radiolysis models, including the effects of the partitioning of gaseous species (O<sub>2</sub> and H<sub>2</sub>) at the gas–solution interface. Different reaction schemes for the Cl<sup>−</sup> radiolysis models are also compared. The validated radiolysis model will then be coupled with interfacial reactions on the copper surface and additional processes related to the presence of bentonite clay in Steps 2 and 3 of the overall model, respectively. |
| format | Article |
| id | doaj-art-a6beae7b21c047e8a5b7b60ef673ef0a |
| institution | Kabale University |
| issn | 2624-5558 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Corrosion and Materials Degradation |
| spelling | doaj-art-a6beae7b21c047e8a5b7b60ef673ef0a2025-08-20T03:26:20ZengMDPI AGCorrosion and Materials Degradation2624-55582025-04-01621410.3390/cmd6020014Validation of Water Radiolysis Models Against Experimental Data in Support of the Prediction of the Radiation-Induced Corrosion of Copper-Coated Used Fuel ContainersScott Briggs0Mehran Behazin1Fraser King2Nuclear Waste Management Organization, Toronto, ON M4T 2S3, CanadaNuclear Waste Management Organization, Toronto, ON M4T 2S3, CanadaIntegrity Corrosion Consulting Ltd., Nanaimo, BC V9T 1K2, CanadaCopper has been proposed as a container material for the disposal of used nuclear fuel in a number of countries worldwide. The container materials will be subject to various corrosion processes in a deep geological repository, including radiation-induced corrosion (RIC) resulting from the γ-irradiation of the near-field environment. A comprehensive model is being developed to predict the extent of RIC by coupling a radiolysis model to the interfacial electrochemical reactions on the container surface. An important component of the overall model is a radiolysis model to predict the time-dependent concentration of oxidizing and reducing radiolysis products. As a first step in the model development, various radiolysis models have been validated against experimental measurements of the concentrations of dissolved and gaseous radiolysis products. Experimental data are available for pure H<sub>2</sub>O- and Cl<sup>−</sup>-containing solutions, with and without a gas headspace. The results from these experiments have been compared with predictions from corresponding radiolysis models, including the effects of the partitioning of gaseous species (O<sub>2</sub> and H<sub>2</sub>) at the gas–solution interface. Different reaction schemes for the Cl<sup>−</sup> radiolysis models are also compared. The validated radiolysis model will then be coupled with interfacial reactions on the copper surface and additional processes related to the presence of bentonite clay in Steps 2 and 3 of the overall model, respectively.https://www.mdpi.com/2624-5558/6/2/14coppercorrosionirradiationused fuel containerdeep geological repositoryradiolysis |
| spellingShingle | Scott Briggs Mehran Behazin Fraser King Validation of Water Radiolysis Models Against Experimental Data in Support of the Prediction of the Radiation-Induced Corrosion of Copper-Coated Used Fuel Containers Corrosion and Materials Degradation copper corrosion irradiation used fuel container deep geological repository radiolysis |
| title | Validation of Water Radiolysis Models Against Experimental Data in Support of the Prediction of the Radiation-Induced Corrosion of Copper-Coated Used Fuel Containers |
| title_full | Validation of Water Radiolysis Models Against Experimental Data in Support of the Prediction of the Radiation-Induced Corrosion of Copper-Coated Used Fuel Containers |
| title_fullStr | Validation of Water Radiolysis Models Against Experimental Data in Support of the Prediction of the Radiation-Induced Corrosion of Copper-Coated Used Fuel Containers |
| title_full_unstemmed | Validation of Water Radiolysis Models Against Experimental Data in Support of the Prediction of the Radiation-Induced Corrosion of Copper-Coated Used Fuel Containers |
| title_short | Validation of Water Radiolysis Models Against Experimental Data in Support of the Prediction of the Radiation-Induced Corrosion of Copper-Coated Used Fuel Containers |
| title_sort | validation of water radiolysis models against experimental data in support of the prediction of the radiation induced corrosion of copper coated used fuel containers |
| topic | copper corrosion irradiation used fuel container deep geological repository radiolysis |
| url | https://www.mdpi.com/2624-5558/6/2/14 |
| work_keys_str_mv | AT scottbriggs validationofwaterradiolysismodelsagainstexperimentaldatainsupportofthepredictionoftheradiationinducedcorrosionofcoppercoatedusedfuelcontainers AT mehranbehazin validationofwaterradiolysismodelsagainstexperimentaldatainsupportofthepredictionoftheradiationinducedcorrosionofcoppercoatedusedfuelcontainers AT fraserking validationofwaterradiolysismodelsagainstexperimentaldatainsupportofthepredictionoftheradiationinducedcorrosionofcoppercoatedusedfuelcontainers |