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| Inspiration of Stress Corrosion in French Nuclear Power on Development of Nuclear Power Technology in China |
| Received:March 07, 2024 Revised:April 07, 2024 |
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| DOI：10.7643/issn.1672-9242.2024.04.016 |
| KeyWord:reactor primary pipe material ageing stress corrosion crack stainless steel dissolved oxygen chloride ion concentration |
| Author | Institution |
| XU Haibo |
National Nuclear Corporation, Beijing , China |
| XU Qi |
Science and Technology on Fuel and Materials Laboratory of NPIC, Chengdu , China |
| QIU Shaoyu |
Science and Technology on Fuel and Materials Laboratory of NPIC, Chengdu , China |
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| Abstract: |
| In 2022, a large amount of EDF nuclear power plants (NPP) were shut down because of stress corrosion crack (SCC) on primary pipe of reactor. It led enormous impact on industry and normal life in France and Europe. To understand this accident, the mechanism, effect factors and migration methods of SCC were analyzed on the basis of summarizing similar failure cases and material aging research results of nuclear reactors at home and abroad. Combined with the increasingly prominent problems such as the gradual extension of the service time, the aging of materials and equipment failure of nuclear power units in China, mitigation measures such as reduction of residual stress, improvement of inspection and development of advance nondestructive examination technologies were suggested. Also, the development direction of aging research on reactor materials in China was discussed. |
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