On the Particle Swarm Optimization of cask shielding design for a prototype Sodium-cooled Fast Reactor
| Autor: | Cheol-Woo Lee, Donny Hartanto, Dong-Won Lim, Jae-Yong Lim |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Continuous operation 020209 energy Nuclear engineering 02 engineering and technology Nuclear reactor lcsh:TK9001-9401 Spent nuclear fuel 030218 nuclear medicine & medical imaging Coolant law.invention 03 medical and health sciences 0302 clinical medicine Sodium-cooled fast reactor Nuclear Energy and Engineering law Electromagnetic shielding 0202 electrical engineering electronic engineering information engineering lcsh:Nuclear engineering. Atomic power CASK Burnup |
| Zdroj: | Nuclear Engineering and Technology, Vol 51, Iss 1, Pp 284-292 (2019) |
| ISSN: | 1738-5733 |
| DOI: | 10.1016/j.net.2018.09.007 |
| Popis: | For the continuous operation of a nuclear reactor, burnt fuel needs to be replaced with fresh fuel, where appropriate (ex-vessel) fuel handling is required. Particularly for the Sodium-cooled Fast Reactor (SFR) refueling, its process has unique challenges due to liquid sodium coolant. The ex-vessel spent fuel transportation should concern several design features such as the radiation shielding, decay-heat removal, and inert space separated from air. This paper proposes a new design optimization methodology of cask shielding to transport the spent fuel assembly in a prototype SFR for the first time. The Particle Swarm Optimization (PSO) algorithm had been applied to design trade-offs between shielding and cask weight. The cask is designed as a double-cylinder structure to block an inert sodium region from the air-cooling space. The PSO process yielded the optimum shielding thickness of 26 cm, considering the weight as well. To confirm the shielding performance, the radiation dose of spent fuel removed at its peak burnup and after 1-year cooling was calculated. Two different fuel positions located during transportation were also investigated to consider a functional disorder in a cask drive system. This study concludes the current cask design in normal operations is satisfactory in accordance with regulatory rules. Keywords: Fuel transfer cask, Radiation shielding, MCNP, Particle Swarm Optimization (PSO), Sodium-cooled Fast Reactor Refueling |
| Databáze: | OpenAIRE |
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