An AE method is an effective technique that can inspect corrosion damage of tank bottom plates to prevent leakage accidents of oil storage tanks. However, a correlation between AE signals and the corrosion behavior for bottom plates is not fully clarified. In this study, the authors considered that the corrosion regions in bottom plates become a strong acid environment by chloride ions as shown our previous work. The correlation between the AE signals and the corrosion behavior with a potentiostat for test pieces was examined in the environment. The polarization resistance was measured with an AC impedance method using a frequency response analyzer. It was clear that the polarization resistance indicated the corrosion rate for a test pieces in the experiments. While measuring the AE signals, the corrosion rate was monitored with a test piece. As a result, the AE signal showed the good correlation with the corrosion rates of the test pieces.
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ASME 2008 Pressure Vessels and Piping Conference
July 27–31, 2008
Chicago, Illinois, USA
Conference Sponsors:
- Pressure Vessels and Piping
ISBN:
978-0-7918-4828-9
PROCEEDINGS PAPER
Evaluation of the Corrosion Rate for Acidic Bottom Plates of an Aboveground Oil Tank by the AE Method
Naoya Kasai,
Naoya Kasai
Yokohama National University, Yokohama, Japan
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So Soon Park,
So Soon Park
Yokohama National University, Yokohama, Japan
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Kentaro Utatsu,
Kentaro Utatsu
Yokohama National University, Yokohama, Japan
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Kazuyoshi Sekine,
Kazuyoshi Sekine
Yokohama National University, Yokohama, Japan
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Shigeo Kitsukawa,
Shigeo Kitsukawa
Yokohama National University, Yokohama, Japan
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Tsukasa Mitsuta
Tsukasa Mitsuta
Japan Oil, Gas and Metals National Corporation, Kawasaki, Japan
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Naoya Kasai
Yokohama National University, Yokohama, Japan
So Soon Park
Yokohama National University, Yokohama, Japan
Kentaro Utatsu
Yokohama National University, Yokohama, Japan
Kazuyoshi Sekine
Yokohama National University, Yokohama, Japan
Shigeo Kitsukawa
Yokohama National University, Yokohama, Japan
Tsukasa Mitsuta
Japan Oil, Gas and Metals National Corporation, Kawasaki, Japan
Paper No:
PVP2008-61517, pp. 179-182; 4 pages
Published Online:
July 24, 2009
Citation
Kasai, N, Park, SS, Utatsu, K, Sekine, K, Kitsukawa, S, & Mitsuta, T. "Evaluation of the Corrosion Rate for Acidic Bottom Plates of an Aboveground Oil Tank by the AE Method." Proceedings of the ASME 2008 Pressure Vessels and Piping Conference. Volume 5: High Pressure Technology; Nondestructive Evaluation Division; Student Paper Competition. Chicago, Illinois, USA. July 27–31, 2008. pp. 179-182. ASME. https://doi.org/10.1115/PVP2008-61517
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