Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2005.07e
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- Pages.61-63
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- 2005
Coating defect survey of underground buried pipelines
지하매설배관의 피복손상부 탐측에 관한 연구
- Ha, Tae-Hyun (Korea Electrotechnology Research Institute) ;
- Bae, Jeong-Hyo (Korea Electrotechnology Research Institute) ;
- Lee, Hyun-Goo (Korea Electrotechnology Research Institute) ;
- Kim, Dae-Kyeong (Korea Electrotechnology Research Institute) ;
- Ha, Yoon-Cheol (Korea Electrotechnology Research Institute) ;
- Park, Kyung-Wha (Korea Electrotechnology Research Institute)
- Published : 2005.07.18
Abstract
In present, most of underground metallic structures, especially gas pipeline, have adopted in order to protect against a corrosion. If a coating defect is be on the surface of gas pipeline, the pitting corrosion is occur normally. So, in the corrosion field, investigation of coating defect is very important activity. In this paper, DCVG(Direct Current Voltage Gradient) method which is can detect a coating defect of gas pipeline is introduced. And also, the assesment of coating defect position according to the position of temporary anode of ICCP(Impresed Current Cathodic Protection) system is presented.
Keywords