Although, the reactor core is filled with He(helium). Is it possible to graphite is oxidized in long run of nuclear reactor.
I would like to suggest to read the paper Thermal oxidation of nuclear graphite: A large scale waste treatment option and the document included in the article Article Oxidation of graphite material used in reactor
.
“This report directly addresses the issue of uncontrolled, self -sustained oxidation (burning) of graphite and demonstrates that burning is not possible for high purity, nuclear graphite.” https://www.researchgate.net/publication/303855627_Role_of_Nuclear_Grade_Graphite_in_Controlling_Oxidation_in_Modular_HTGRs
See more information in the references:
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0182860 https://inldigitallibrary.inl.gov/sites/sti/sti/6277611.pdf https://inis.iaea.org/collection/NCLCollectionStore/_Public/43/024/43024028.pdf
https://www.nature.com/articles/s41598-018-31493-4
https://inis.iaea.org/collection/NCLCollectionStore/_Public/28/008/28008816.pdf
please see it also
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