Affiliations: [a] Research Center for IT-based Real-time NDT, Chosun University, Gwangju, Korea | [b] Department of Defense Science & Technology, Gwangju University, Gwangju, Korea
Correspondence:
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Corresponding author: Jinyi Lee, Research Center for IT-based Real-time NDT, Chosun University, 309 Pilmun-Daero, Dong-gu, Gwangju 61452, Korea. Tel.: +82 62 230 7101; E-mail: [email protected]
Abstract: A moisture separator reheater (MSR) system is installed between the high-pressure and low-pressure steam turbines in a nuclear power plant to increase the heat efficiency of the power plant. Erosion and corrosion of the MSR tubes have threatened the long-term operation of nuclear power plants. Thus a partial saturation eddy current testing (PSECT) method using a bobbin-type integrated Hall sensor array (BIHaS) was proposed in our previous study and it showed good results compared with a conventional PSECT. This paper presents a novel signal processing technique to improve detectability and measurability of electromagnetic testing method using a BIHaS through mitigating the inherent vibration signal noise between the BIHaS and ferritic stainless steel tubes.
Keywords: Hall sensor array, partial saturation eddy current testing, electromagnetic testing, moisture separator reheater
