Vibration Evaluation of Small Bore Pipe in NPPs Based on Strain and Acceleration

Shen Shuangquan; Xu Yugen; Zhang Shiwei; Li Xin

doi:10.13832/j.jnpe.2016.S2.0077

Volume 37 Issue S2

Feb. 2025

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Shen Shuangquan, Xu Yugen, Zhang Shiwei, Li Xin. Vibration Evaluation of Small Bore Pipe in NPPs Based on Strain and Acceleration[J]. Nuclear Power Engineering, 2016, 37(S2): 77-79. doi: 10.13832/j.jnpe.2016.S2.0077

Citation:

Shen Shuangquan, Xu Yugen, Zhang Shiwei, Li Xin. Vibration Evaluation of Small Bore Pipe in NPPs Based on Strain and Acceleration[J]. Nuclear Power Engineering, 2016, 37(S2): 77-79. doi: 10.13832/j.jnpe.2016.S2.0077

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Vibration Evaluation of Small Bore Pipe in NPPs Based on Strain and Acceleration

doi: 10.13832/j.jnpe.2016.S2.0077

Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2016-10-09
Rev Recd Date: 2016-12-20

Available Online: 2025-02-15

Publish Date: 2025-02-15

Abstract

Abstract

Small bore pipes, existing in a form of large quantities of instrument pipes, sampling pipes and vent pipes, often suffer mechanical vibration fatigue fracture. Vibration fatigue life is evaluated according to measured vibration stresses for GRE023 pipes in Unit 2 of Yangjiang NPP. Measured acceleration time history were double integrated into the displacement time history for vibration fatigue life analysis by finite element method, and key parameters for transient dynamic analysis were also determined, which lays an empirical foundation for vibration reduction of analogical structure. The analytical method can provide a reference for small bore pipe vibration reduction in NPPs.
- Small bore pipe,
- Vibration,
- Fatigue evaluation