Mechanism Study and Control of <sup>41</sup>Ar Source Term in EPR Unit Coolant

Li Xiaoning; Ma Boyang; He Weihua; Tao Jiantang; Su Xing; Zong Guopeng

doi:10.13832/j.jnpe.2024.06.0166

Volume 45 Issue 6

Dec. 2024

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Li Xiaoning, Ma Boyang, He Weihua, Tao Jiantang, Su Xing, Zong Guopeng. Mechanism Study and Control of 41Ar Source Term in EPR Unit Coolant[J]. Nuclear Power Engineering, 2024, 45(6): 166-171. doi: 10.13832/j.jnpe.2024.06.0166

Citation:

Li Xiaoning, Ma Boyang, He Weihua, Tao Jiantang, Su Xing, Zong Guopeng. Mechanism Study and Control of ⁴¹Ar Source Term in EPR Unit Coolant[J]. Nuclear Power Engineering, 2024, 45(6): 166-171. doi: 10.13832/j.jnpe.2024.06.0166

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Mechanism Study and Control of ⁴¹Ar Source Term in EPR Unit Coolant

doi: 10.13832/j.jnpe.2024.06.0166

Taishan Nuclear Power Joint Venture Co., Ltd., Jiangmen, Guangdong, 529228, China

Received Date: 2024-02-28
Rev Recd Date: 2024-06-04
Publish Date: 2024-12-17

Abstract

Abstract

In order to control the Argon-41 (⁴¹Ar) radiation source term in European Pressurized Reactor (EPR) coolant, this research pioneers the development of a transport model for ⁴¹Ar in EPR coolant and elucidates the pattern of ⁴¹Ar specific activity variation under different conditions. Through the model analysis, it is found that the specific activity of ⁴¹Ar in the coolant of a unit is abnormal, and it is the first time to detect the formation of a stable gaseous radiation hotspot within the gas-liquid separator of the EPR's hydrogen refueling station. The model is used to trace the specific path that the environmental air carries ⁴⁰Ar into the coolant, and measures are taken to effectively control the radiation source term of ⁴¹Ar and reduce the radiation risk of the unit.
- European Pressurized Water Reactor (EPR),
- Reactor activation,
- Source item control,
- Radiation protection,
- ⁴¹Ar

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References(4)

References

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