Open AccessResearch on Application of Pulsed Eddy Current Testing in Nuclear Power Plant Pipelines
Author(s) -
Yang Han,
Yu-Chun Tao,
Hai Yan,
Zhizhen Peng,
Ping Liang,
Ning Xu
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2087/1/012020
Subject(s) - pipeline transport , eddy current , eddy current testing , ultrasonic sensor , nondestructive testing , ultrasonic testing , piping , nuclear power plant , pipeline (software) , materials science , nuclear power , acoustics , nuclear engineering , structural engineering , engineering , mechanical engineering , electrical engineering , medicine , ecology , physics , biology , nuclear physics , radiology
The condensate pipelines, main water supply pipelines, drain pipelines, and partial extraction pipelines of nuclear power plants are all coated with coatings on the outside of the pipelines to improve heat exchange efficiency. At present, the detection methods of ferromagnetic pipelines are mainly conventional ultrasound and ultrasonic guided waves. It is necessary to remove the insulation layer of the outer wall of the pipeline before the inspection, which leads to a prolonged inspection period and increased labor costs. This paper uses the measured and calculated values of the induced voltage to establish the optimal parameter inversion problem and combines the coupling relationship between the parameters to propose a reliable pulsed eddy current detection method for the relative wall thickness of ferromagnetic pipes. Using the pulsed eddy current detection method for the relative wall thickness of ferromagnetic pipelines proposed in this paper, the scanning detection of nuclear power plant steel pipes is compared with conventional ultrasonic testing. The detection results are reliable and suitable for non-destructive testing and evaluation of nuclear power plant ferromagnetic pipeline wall thickness corrosion thinning.