Application of Ultrasonic Technique in In-service Inspection of Bolts in Nuclear Power Plants

Wang Weiqiang; Ma Guanbing; Tang Jianbang; Yu Zhe; Yuan Shuxian; Ye Xin

doi:10.13832/j.jnpe.2024.050020

Volume 46 Issue 3

Jun. 2025

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Article Navigation > Nuclear Power Engineering > 2025 > 46(3): 266-270

Wang Weiqiang, Ma Guanbing, Tang Jianbang, Yu Zhe, Yuan Shuxian, Ye Xin. Application of Ultrasonic Technique in In-service Inspection of Bolts in Nuclear Power Plants[J]. Nuclear Power Engineering, 2025, 46(3): 266-270. doi: 10.13832/j.jnpe.2024.050020

Citation:

Wang Weiqiang, Ma Guanbing, Tang Jianbang, Yu Zhe, Yuan Shuxian, Ye Xin. Application of Ultrasonic Technique in In-service Inspection of Bolts in Nuclear Power Plants[J]. Nuclear Power Engineering, 2025, 46(3): 266-270. doi: 10.13832/j.jnpe.2024.050020

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Application of Ultrasonic Technique in In-service Inspection of Bolts in Nuclear Power Plants

doi: 10.13832/j.jnpe.2024.050020

Wang Weiqiang^{1, 2
,},
Ma Guanbing^{1, 2, 3},
Tang Jianbang^{1, 2},
Yu Zhe^{1, 2},
Yuan Shuxian^{1, 2},
Ye Xin^{1, 2}

1.
CGN Inspection Technology Co., Ltd., Suzhou, Jiangsu, 215026, China
2.
National Engineering Research Center for Nuclear Power Plant Safety & Reliability, Suzhou, Jiangsu, 215004, China
3.
Suzhou Nuclear Power Research Institute Co., Ltd., Suzhou, Jiangsu, 215004, China

Received Date: 2024-05-01
Rev Recd Date: 2024-06-06

Available Online: 2025-06-09

Publish Date: 2025-06-09

Abstract

Abstract

Nuclear power plant equipment contains a large number of bolted fastening structures. Bolts may develop defects under long-term complex service conditions, and effective and reliable ultrasonic inspection of bolts is essential to ensure the safe operation of nuclear power plants. In this paper, based on two types of bolts with and without center hole, the baffle bolt and RPV stud are selected as the research object. The end-face ultrasonic inspection technology and center-hole ultrasonic inspection technology are studied, and the judgment and quantitative technology of defects are analyzed. The results on the test blocks show that the end-surface ultrasonic inspection technology and the center-hole ultrasonic inspection technology can realize the effective detection of defects and meet the requirements of in-service inspection.
- End-face ultrasonic inspection,
- Center-hole ultrasonic inspection,
- Baffle bolt,
- Reactor pressure vessel (RPV) stud

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References(9)

References

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