Structural and radiological characterization of irradiated RBMK-1500 reactor graphite

Elena Lagzdina; Danielius Lingis; Arturas Plukis; Rita Plukiene; Darius Germanas; Andrius Garbaras; Jevgenij Garankin; Arunas Gudelis; Ilja Ignatjev; Gediminas Niaura; Sergej Krutovcov; Vidmantas Remeikis

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자료유형: 학술저널

저자정보: Elena Lagzdina (Center for Physical Sciences and Technology) Danielius Lingis (Center for Physical Sciences and Technology) Arturas Plukis (Center for Physical Sciences and Technology) Rita Plukiene (Center for Physical Sciences and Technology) Darius Germanas (Center for Physical Sciences and Technology) Andrius Garbaras (Center for Physical Sciences and Technology) Jevgenij Garankin (Center for Physical Sciences and Technology) Arunas Gudelis (Department of Nuclear Research, Center for Physical Sciences and Technology) Ilja Ignatjev (c Department of Organic Chemistry, Center for Physical Sciences and Technology) Gediminas Niaura (Department of Organic Chemistry, Center for Physical Sciences and Technology) Sergej Krutovcov (State Enterprise Ignalina Nuclear Power Plant) Vidmantas Remeikis (Center for Physical Sciences and Technology)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제54권 제1호

발행연도: 2022.1

수록면: 234 - 243 (10page)

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This study aims to characterize the irradiated RBMK-1500 nuclear graphite in terms of both structuraland radiological properties. The experimental results of morphological and structural analysis of theirradiated graphite samples by using SEM, Raman spectroscopy as well as the theoretical evaluation ofprimary displacement damage are presented. Moreover, the experimental and theoretical evaluation ofthe neutron flux is provided and the presence of several g emitters in the analyzed graphite samples isassessed. Furthermore, the improved version of rapid analysis method for 14C activity determination isapplied and the experimentally obtained results are compared with calculated ones. Results indicate thatstructural changes are uniform enough in all the analyzed samples. However, the distribution of radionuclidesis non-homogeneous in the irradiated RBMK-1500 reactor graphite matrix. The comprehensiveunderstanding of both structural and radiological characteristics of nuclear graphite is veryimportant when dealing with decision about irradiated graphite waste management strategy or treatmentoptions prior to its final disposal.

#RBMK nuclear graphite #Raman spectroscopy #MCNP #Displacements per atom (DPA) #14C

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