Low Temperature Synthesis of Iron Oxide Films via Precipitation from Aqueous Solution for Suppression of Radioactivity Buildup in Nuclear Power Plants
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Typ
Program
Kemiteknik 180 hp (högskoleingenjör)
Publicerad
2024
Författare
Jacobsson, Petter
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Uptake of radioactive 60Co2+ in nuclear reactor cooling loops poses a problem in
nuclear power plants. Unattended oxide films on 316L stainless steel results in an
outer formation of iron-nickel spinel crystalites and inner iron-chromium spinel layer.
The outer crystalites incorporate the radioactive isotope 60Co, which has a half life
of 5.3 years, from cooling water. The issue is as of today addressed through zinc
injection or the patented Hi-F Coat, the latter is a elecroless deposition method
of hematite and magnetite. The Hi-FC is a subject of modification to exclude
chemicals harmful to the user and the environment. Hematite does not allow for
uptake of 60Co2+ and therefore this study will aim to via electroless deposition,
deposit a hematite layer for applications in nuclear power plants cooling loops. A
successful implementation of this will lower the radiation dose experienced within
the cooling loop with up to 90% and drastically reduce the associated health risks
and maintenance costs.
Beskrivning
Ämne/nyckelord
Electroless deposition , Co uptake , Hematite