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Apr 19 – 22, 2022
Vienna, Austria
Europe/Vienna timezone
FR22 starts in Vienna 19 - 22 April 2022 Online Stream: https://event.do/iaea/a/#/events/5048

Impact of Core Materials on The Fuel cladding Irradiation Damage in Breed-and-Burn Fast Reactors

Apr 20, 2022, 10:40 AM
2h
Vienna, Austria

Vienna, Austria

POSTER Track 4. Fast Reactor Materials (Coolants, Structures) and Components Poster Session

Speaker

Dr Odmaa Sambuu (School of Engineering and Applied Sciences, National University of Mongolia)

Description

The breed and burn fast reactor concept have been a familiar with nuclear engineers since the 1950s in which the depleted or not enriched fuel is loaded in a core and breed the fissile fuels while burning them. Development of Breed-and-Burn (B&B) reactor means of effective utilization of uranium resource and reduction of spent fuel. There are issues to be solved as of irradiation damage in high burnup and reducing the Displacement-Per-Atom (DPA) for the same burnup. However, there is no clear investigation on optimum combination of core material as fuel and coolant for bread and burn reactor possible and on impact on DPA by the use of different combinations of core material. The objective of the study is to make clear impact on DPA for several materials by performing burnup analysis using Monte Carlo SERPENT code. DPA calculation and neutron balance analyses for the infinite fuel cell in which different combination of fuel as metallic, natural and enriched nitride, and oxide ones and coolant as helium, sodium, lead and lead-bismuth were performed in order to find out the optimum combination to make the DPA minimum. The analysis results showed the DPA at the same burnup is the lowest for oxide fueled core and the highest for metallic fueled one. For metallic fueled core, the spectrum is the hardest while it is softer for oxide and nitride fueled cores. But, the minimum burnup required to sustain a B&B mode of operation in a large fast reactor core is the lowest for core with combination of metallic fuel and any type of coolant compared to others. As the results, the DPA at the minimum burnup to make the B&B fast reactor critical can be the smallest in metallic fuel. It means the use of metallic fuel has some advantage to reduce DPA in B&B fast reactors. In the case, the use of helium gas as coolant can make the DPA smallest. The DPA by using other material can be expected almost the same in B&B fast reactors.

Speaker's email address odmaa@seas.num.edu.mn
Affiliation/Organization National University of Mongolia
Country/Int. organization Mongolia
Speaker's title Ms

Primary author

Dr Odmaa Sambuu (School of Engineering and Applied Sciences, National University of Mongolia)

Co-authors

Prof. Toru Obara (Tokyo Institute of Technology) Dr Jun Nishiyama (Tokyo Institute of Technology) Dr Khanh HOANG Van (Institute for Nuclear Science and Technology, Vietnam Atomic Energy Institute)

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Paper