Prediction Model for Growth of Chalk River Unidentified Deposit on the Surface of PWR Fuel Cladding

Chen Jiajie; Liu Xiaojing; Du Sijia; Wang Jiageng; He Hui

doi:10.13832/j.jnpe.2023.05.0210

Volume 44 Issue 5

Oct. 2023

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Chen Jiajie, Liu Xiaojing, Du Sijia, Wang Jiageng, He Hui. Prediction Model for Growth of Chalk River Unidentified Deposit on the Surface of PWR Fuel Cladding[J]. Nuclear Power Engineering, 2023, 44(5): 210-215. doi: 10.13832/j.jnpe.2023.05.0210

Citation:

Chen Jiajie, Liu Xiaojing, Du Sijia, Wang Jiageng, He Hui. Prediction Model for Growth of Chalk River Unidentified Deposit on the Surface of PWR Fuel Cladding[J]. Nuclear Power Engineering, 2023, 44(5): 210-215. doi: 10.13832/j.jnpe.2023.05.0210

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Prediction Model for Growth of Chalk River Unidentified Deposit on the Surface of PWR Fuel Cladding

doi: 10.13832/j.jnpe.2023.05.0210

1.
School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
2.
Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2023-06-09
Rev Recd Date: 2023-07-11
Publish Date: 2023-10-13

Abstract

Abstract

In order to establish a prediction method for the thickness of chalk river unidentified deposit (CRUD) on the surface of PWR fuel cladding, this paper takes the primary circuit of typical PWR as the research object. Aiming at the influence of water chemistry and physical conditions in PWR on CRUD, a deposition model is established. Compared with the actual operation data of Sizewell B nuclear power plant, the predicted results of the model have the same growth order and trend, which indicates that the model can be used to quantitatively predict the thickness of CRUD on the surface of PWR fuel cladding. The effects of heat flux, H₂ and Li concentration on the accumulation of corrosion products are studied, the predicted results show that the CRUD thickness of the non-boiling section is less affected by the heat flux, while the CRUD thickness of the boiling section increases with the increase of heat flux. The CRUD thickness increases with the increase of H₂ concentration, and the increase of Li concentration in the system is helpful to restrain the deposition of oxidation corrosion products.
- Pressurized water reactor (PWR),
- Fuel cladding,
- Chalk river unidentified deposit (CRUD),
- Deposition model

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References(10)

References

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