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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.1
- 수록면
- 1,110 - 1,119 (10page)
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초록· 키워드
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The Floating Absorber for Safety at Transient (FAST) is a safety device used in the innovative Sodiumcooled Fast Reactor (iSFR). The FAST insert negative reactivity under transient or accident conditions. However, behavior of the FAST is still unclear under transient conditions. Therefore, the existing Floating Absorber for Safety at Transient Analysis Code (FASTAC) is improved to analyze the FAST movement by considering the reactivity and temperature distribution within the reactor core. The current FASTsystem is simulated under a single control rod withdrawal accident condition. In this investigation, the reactor thermal power does not return to its initial thermal power even if the FAST inserts negative reactivity. Only a 9 K of coolant temperature margin, in the hottest fuel assembly at EOL, can lead to unnecessary insertion of the negative reactivity. On the other hand, the FASTs cannot contribute to controlling the reactivity when normalized radial power is less than 0.889 at BOL and 0.972 at EOL. These simulation results suggest that the current FAST design needs to be optimized depending on its installed location. Meanwhile, the FAST system keeps the fuel, cladding and coolant temperatures below their limit temperatures with given conditions.
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참고문헌 (25)
참고문헌 신청
D. Hartanto / 2016 / An LEU-loaded long-life innovative sodiumcooled fast reactor (iSFR) with novel and passive safety devices / Ann. Nucl. Energy 95:86~101
W. S. YANG / 2012 / FAST REACTOR PHYSICS AND COMPUTATIONAL METHODS / Nuclear Engineering and Technology 44(2):177~198
D.G. Cacuci / 2010 / Handbook of Nuclear Engineering / Springer Science & Business Media
B. Merk / 2013 / Fine distributed moderating material with improved thermal stability applied to enhance the feedback effects in SFR cores / Sci. Technol. Nucl. Install 2013:1~11
S. J. Kim / 2000 / A pan-shape transuranic burner core with a low sodium void worth / Ann. Nucl. Energy 27:435~448
W. S. YANG / 2012 / FAST REACTOR PHYSICS AND COMPUTATIONAL METHODS / Nuclear Engineering and Technology 44(2):177~198
D.G. Cacuci / 2010 / Handbook of Nuclear Engineering / Springer Science & Business Media
B. Merk / 2013 / Fine distributed moderating material with improved thermal stability applied to enhance the feedback effects in SFR cores / Sci. Technol. Nucl. Install 2013:1~11
S. J. Kim / 2000 / A pan-shape transuranic burner core with a low sodium void worth / Ann. Nucl. Energy 27:435~448
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