Research on Environmentally Assisted Fatigue Analysis Method for Primary Circuit of Pressurized Water Reactor Units

Lyu Fangming; Jiang He; Tong He; Cao Guochang; Cao Hongsheng

doi:10.13832/j.jnpe.2024.06.0232

Volume 45 Issue 6

Dec. 2024

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Lyu Fangming, Jiang He, Tong He, Cao Guochang, Cao Hongsheng. Research on Environmentally Assisted Fatigue Analysis Method for Primary Circuit of Pressurized Water Reactor Units[J]. Nuclear Power Engineering, 2024, 45(6): 232-236. doi: 10.13832/j.jnpe.2024.06.0232

Citation:

Lyu Fangming, Jiang He, Tong He, Cao Guochang, Cao Hongsheng. Research on Environmentally Assisted Fatigue Analysis Method for Primary Circuit of Pressurized Water Reactor Units[J]. Nuclear Power Engineering, 2024, 45(6): 232-236. doi: 10.13832/j.jnpe.2024.06.0232

Citation:

Lyu Fangming, Jiang He, Tong He, Cao Guochang, Cao Hongsheng. Research on Environmentally Assisted Fatigue Analysis Method for Primary Circuit of Pressurized Water Reactor Units[J]. Nuclear Power Engineering, 2024, 45(6): 232-236. doi: 10.13832/j.jnpe.2024.06.0232

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Research on Environmentally Assisted Fatigue Analysis Method for Primary Circuit of Pressurized Water Reactor Units

doi: 10.13832/j.jnpe.2024.06.0232

1.
China Nuclear Power Operation Technology Corporation, Ltd., Wuhan, 430223, China
2.
CNNP Operation Maintenance Technology Co., Ltd., Hangzhou, 311200, China

Received Date: 2023-12-22
Rev Recd Date: 2024-03-01
Publish Date: 2024-12-17

Abstract

Abstract

Environmentally assisted fatigue (EAF) is an important aging mechanism for reactors with water as coolant, which has significant influences on the fatigue life of critical sensitive components in primary circuit of nuclear power plants. In this paper, the EAF screening process of critical sensitive components and the calculation formula of environmental fatigue correction factor (F_en) deriving from the United States are introduced. Meanwhile, the results of EAF key sensitive part screening for the license renewal units in the United States are statistically analyzed. Referring to the EAF analysis method of the United States, the critical sensitive components of the primary circuit of Units 1 and 2 in a domestic plant are selected. The processes, methods, and cases have important guiding and demonstration significance for EAF analysis in the domestic nuclear power plants.
- Nuclear power,
- Environmentally assisted fatigue (EAF),
- Screening,
- Aging

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References(10)

References

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