Analysis of Potential Impact of ATFs on Reactor Safety under Shaft-Stuck Accident

Wu Hexin; Jin Desheng; Gou Junli; Shan Jianqiang; Cheng Yi

doi:10.13832/j.jnpe.2023.S1.0075

Volume 44 Issue S1

Jun. 2023

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Wu Hexin, Jin Desheng, Gou Junli, Shan Jianqiang, Cheng Yi. Analysis of Potential Impact of ATFs on Reactor Safety under Shaft-Stuck Accident[J]. Nuclear Power Engineering, 2023, 44(S1): 75-80. doi: 10.13832/j.jnpe.2023.S1.0075

Citation:

Wu Hexin, Jin Desheng, Gou Junli, Shan Jianqiang, Cheng Yi. Analysis of Potential Impact of ATFs on Reactor Safety under Shaft-Stuck Accident[J]. Nuclear Power Engineering, 2023, 44(S1): 75-80. doi: 10.13832/j.jnpe.2023.S1.0075

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Analysis of Potential Impact of ATFs on Reactor Safety under Shaft-Stuck Accident

doi: 10.13832/j.jnpe.2023.S1.0075

1.
School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, China
2.
China Nuclear Power Technology Research Institute, Shenzhen, Guangdong, 518026, China

Received Date: 2023-02-06
Rev Recd Date: 2023-03-28
Publish Date: 2023-06-15

Abstract

Abstract

To analyze the potential impact of accident tolerant fuel (ATF) on reactor safety under pump shaft-stuck accident, China's improved three-loop pressurized water reactor CPR1000 was used as reference power station to carry out second development based on the system analysis code NUSOL-SYS. The performance of CPR1000 with different ATF combinations under pump shaft-stuck accident was studied, and the sensitivity analysis was carried out to study the change of heat transfer coefficient and critical heat flux (CHF) caused by the change of ATF cladding surface characteristics. The results show that the change of heat transfer coefficient and CHF caused by the change of ATF cladding surface characteristics has a great influence on the maximum temperature of pellets and the peak cladding temperature (PCT). ATF pellets with high thermal conductivity can greatly reduce the pellet temperature, while ATF materials with high specific heat capacity can reduce the PCT.
- Accident tolerant fuel (ATF),
- System analysis code,
- Accident analysis

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References(11)

References

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