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Sorption of 137Cs and 60Co on Titanium Oxide Films in Light Water Reactor Primary Circuit Environment

Glukhoedov, Nikita A. ; Epimakhov, Vitaliy N. ; Orlov, Sergey N. ; Tsapko, Anastasiya A. ; Zmitrodan, Aleksandr A. ; Zmitrodan, Grigoriy A. ; Skripkin, Mikhail Yu

Materials, 2022-06, Vol.15 (12), p.4261 [Periódico revisado por pares]

Basel: MDPI AG

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Título:
Sorption of 137Cs and 60Co on Titanium Oxide Films in Light Water Reactor Primary Circuit Environment
Autor: Glukhoedov, Nikita A. ; Epimakhov, Vitaliy N. ; Orlov, Sergey N. ; Tsapko, Anastasiya A. ; Zmitrodan, Aleksandr A. ; Zmitrodan, Grigoriy A. ; Skripkin, Mikhail Yu
Assuntos: Aqueous solutions ; Cesium 137 ; Cesium isotopes ; Chromium ; Cobalt ; Composition ; Contamination ; Coolants ; Corrosion ; Corrosion products ; Crystallites ; Experiments ; Gamma rays ; light water nuclear reactor ; Light water reactors ; long-lived radionuclides ; Metal surfaces ; Nitrates ; Nuclear reactors ; Oxide coatings ; Potassium ; Primary circuits ; Radioisotopes ; Sorption ; Titanium alloys ; Titanium base alloys ; Titanium dioxide ; Titanium oxides
É parte de: Materials, 2022-06, Vol.15 (12), p.4261
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: This paper discusses the processes of the long-lived 137Cs and 60Co immobilization on titanium surfaces in simulated light water reactor primary circuit environments. This study is prompted by numerous problems in both the maintenance of equipment during reactor operation and the dismantling of the reactor after the completion of the operation, which is associated with contamination of working surfaces with long-lived radionuclides. The composition of the oxide films formed on the surface of commercial titanium alloy ПT-3B has been studied with specimens prepared in autoclave test conditions and surface samples from the pipeline sections to which the primary coolant was applied. These films on the coolant pipeline surface consist of a titanium dioxide layer tightly adhered to the pipeline metal surface and weakly fixed deposits—crystallites comprised of titanium oxides and other corrosion products (oxides and hydrated oxides of iron, nickel, chromium etc.). The radionuclide composition of the samples was studied by gamma-spectrometry. It is shown that the mechanism of titanium-surface contamination with 137Cs is by physisorption, contamination level increases upon the presence of dispersed particles. For 60Co, both sorption and deposition onto surfaces are observed.
Editor: Basel: MDPI AG
Idioma: Inglês

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Sorption of 137Cs and 60Co on Titanium Oxide Films in Light Water Reactor Primary Circuit Environment

Glukhoedov, Nikita A. ; Epimakhov, Vitaliy N. ; Orlov, Sergey N. ; Tsapko, Anastasiya A. ; Zmitrodan, Aleksandr A. ; Zmitrodan, Grigoriy A. ; Skripkin, Mikhail Yu

Basel: MDPI AG

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