Modeling of processing of irradiated graphite contained fission and neutron-activation products by noble gas flow

Evgeny Bespala, Alexander Pavliuk, Sergey Kotlyarevskiy, Ivan Novoselov, Yuliya Bespala

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The paper discusses questions dedicated accumulation of graphite radioactive waste generated during commissioning of uranium-graphite nuclear reactor. Authors determine character of contamination of irradiated graphite by different radionuclides (especially 1 37 Cs, 60 Co, 90 Sr) using autoradiographic methods and by means of electron microscope (scanning electron microscope - analysis). It has been obtained images of polished section of irradiated graphite in back-scattered electrons. Authors suggest the method of thermal decontamination of irradiated graphite surface by noble gas flow for the purpose of potential hazard reduction of graphite radioactive waste. The developed mathematical model of thermal decontamination of irradiated graphite subject to Wigner energy release under radiation defect annealing has been demonstrated in paper. The article represents laws reflecting dependence of recession velocity of radioactive contamination of graphite radioactive waste and different parameters of process subject to Wigner energy release.

Original languageEnglish
Title of host publicationV International Conference for Young Scientists, Post-Graduate Students and Students �Isotopes
Subtitle of host publicationTechnologies, Materials and Application�, ITMA 2018
EditorsGagik Ashot Martoyan, Anna Godymchuk, Liudmyla Rieznichenko
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735418318
DOIs
Publication statusPublished - 18 Apr 2019
Event5th International Conference for Young Scientists, Post-Graduate Students and Students on Isotopes: Technologies, Materials and Application, ITMA 2018 - Tomsk, Russian Federation
Duration: 19 Nov 201823 Nov 2018

Publication series

NameAIP Conference Proceedings
Volume2101
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference5th International Conference for Young Scientists, Post-Graduate Students and Students on Isotopes: Technologies, Materials and Application, ITMA 2018
CountryRussian Federation
CityTomsk
Period19.11.1823.11.18

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Bespala, E., Pavliuk, A., Kotlyarevskiy, S., Novoselov, I., & Bespala, Y. (2019). Modeling of processing of irradiated graphite contained fission and neutron-activation products by noble gas flow. In G. A. Martoyan, A. Godymchuk, & L. Rieznichenko (Eds.), V International Conference for Young Scientists, Post-Graduate Students and Students �Isotopes: Technologies, Materials and Application�, ITMA 2018 [020004] (AIP Conference Proceedings; Vol. 2101). American Institute of Physics Inc.. https://doi.org/10.1063/1.5099596