Journal of Physics: Conference Series | VOL. 2338
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Analysis of piping and support weld defects of VVP system in nuclear power plant and study on treatment measures

Publication Date Sep 1, 2022

Abstract

The main steam system(VVP) support of nuclear power plant protects the main pipe by welding the guard plate on the main pipe. This paper takes defect treatment of the VVP main steam system(VVP) pipe and support weld in a nuclear power plant as an example. From the analysis of the effective mechanism of the weld generation to the proposal, discussion and implementation of the final scheme, the technical points are comprehensive described, defect types were determined by penetrant testing and metallographic observation, and further root reason analysis was carried out. Accordingly, the defects are eliminated by technical means to avoid the expansion of defects and ensure the safe and stable operation of the unit. The analysis and treatment scheme of the defects in this project provides a technical scheme for inspection and maintenance in the nuclear power field, and provides an important reference for the future treatment of defects.

Concepts

System In Nuclear Power Plant Main Steam System Nuclear Power Field Nuclear Power Plant Main Pipe Metallographic Observation Technical Points Penetrant Testing System In Power Plant Defect Types

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No potential conflict of interest was reported by the authors. The conception and design of the study, acquisition of data, analysis and interpretatio...

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