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Best Estimate Plus Uncertainty Analysis of a Pressurizer Surge Line Break LOCA on China’s Advanced PWR

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Proceedings of the 23rd Pacific Basin Nuclear Conference, Volume 2

Part of the book series: Springer Proceedings in Physics ((SPPHY,volume 284))

Abstract

The Pressurizer Surge Line Break (PSLB) Loss of Coolant Accident (LOCA) is one of the representative design basis accidents (DBAs) which leads to the discharge of the primary coolant into the containment atmosphere. In this paper, the RELAP5 best-estimate code was used to perform a PSLB LOCA on China’s Advanced Pressurized Water Reactor (PWR). According to the phenomenon identification and ranking table (PIRT), the parameters that contribute significantly to the reactor safety standard were determined. Then, simple random sampling was performed using DAKOTA software and a set of 59 calculations were performed based on the Wilks’ formula. The uncertainty bands of key output parameters were obtained with 95/95 criterion, and the upper band of maximum containment pressure did not exceed the safety limit. Lastly, important uncertainty contributors for the maximum containment pressure were identified through sensitivity analysis.

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Author information

Authors and Affiliations

  1. Department of Nuclear Engineering and Technology, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China

    Cuiting Peng, Ye Yang, Chengcheng Deng & Jun Yang

  2. Department of Nuclear Science and Technology, School of Energy and Environment, Southeast University, Nanjing, 210096, China

    Yao Yao

  3. Institute of Nuclear Thermal-Hydraulic Safety and Standardization, Jinan, China

    Yao Yao

  4. National Engineering Research Center of Power Generation Control and Safety, Nanjing, 210096, China

    Yao Yao

Authors
  1. Cuiting Peng
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  2. Yao Yao
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  3. Ye Yang
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  4. Chengcheng Deng
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  5. Jun Yang
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Corresponding author

Correspondence to Jun Yang .

Editor information

Editors and Affiliations

  1. Nuclear Power Institute of China, Chengdu, China

    Chengmin Liu

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Peng, C., Yao, Y., Yang, Y., Deng, C., Yang, J. (2023). Best Estimate Plus Uncertainty Analysis of a Pressurizer Surge Line Break LOCA on China’s Advanced PWR. In: Liu, C. (eds) Proceedings of the 23rd Pacific Basin Nuclear Conference, Volume 2. Springer Proceedings in Physics, vol 284. Springer, Singapore. https://doi.org/10.1007/978-981-19-8780-9_49

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