Impact Analysis of Single Fuel Rod Damage during Fuel Assembly Repair

Chen Xiaoqiang; Yin Shuhua; Wei Xuehu; Lyv Weifeng; Xiong Jun

doi:10.13832/j.jnpe.2023.02.0198

Volume 44 Issue 2

Apr. 2023

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Chen Xiaoqiang, Yin Shuhua, Wei Xuehu, Lyv Weifeng, Xiong Jun. Impact Analysis of Single Fuel Rod Damage during Fuel Assembly Repair[J]. Nuclear Power Engineering, 2023, 44(2): 198-202. doi: 10.13832/j.jnpe.2023.02.0198

Citation:

Chen Xiaoqiang, Yin Shuhua, Wei Xuehu, Lyv Weifeng, Xiong Jun. Impact Analysis of Single Fuel Rod Damage during Fuel Assembly Repair[J]. Nuclear Power Engineering, 2023, 44(2): 198-202. doi: 10.13832/j.jnpe.2023.02.0198

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Impact Analysis of Single Fuel Rod Damage during Fuel Assembly Repair

doi: 10.13832/j.jnpe.2023.02.0198

China Nuclear Power Engineering Co., Ltd., Shenzhen, Guangdong, 512178, China

Received Date: 2022-04-19
Rev Recd Date: 2022-12-27
Publish Date: 2023-04-15

Abstract

Abstract

The cumulative effective dose to fuel assembly repair workers, the total radioactive activity of gaseous effluent released to the environment and the impact on gaseous effluent discharge monitoring are calculated and evaluated by taking the radioactive substances released from single fuel rod damage during the fuel assembly repair in nuclear power plant as the analysis object. The analysis results show that in case of single fuel rod damage, the cumulative effective dose received by each worker involved in the fuel assembly repair is 12.2 mSv, which is lower than 20 mSv—the annual average effective dose limit for workers’ occupational exposure stipulated in GB 18871-2002; the total radioactive activities of noble gases and iodine in the gaseous effluent released to the environment are 3.51 × 10¹¹Bq and 2.17 × 10⁸Bq respectively, which are far lower than the annual emission control values (6.0 × 10¹⁴Bq and 2.0 × 10¹⁰Bq) specified in GB 6249-2011. The reading of noble gas exhaust measuring instrument is lower than 1.0 × 10¹¹Bq/h 40 minutes after the fuel rod damage, so the nuclear power plant does not need to be put on emergency standby.
- Fuel assembly repair,
- Fuel rod damage,
- Cumulative effective dose,
- Gaseous effluent,
- Emergency standby

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References(13)

References

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