Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2007.07a
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- Pages.1609-1611
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- 2007
A Mitigation Methode of DC Stray Current for Underground Metallic Structures in KOREA
국가 기간 시설물의 전식 대책(안)
- Bae, Jeong-Hyo (Korea Electrotechnology Research Institute) ;
- Ha, Yoon-Cheol (Korea Electrotechnology Research Institute) ;
- Ha, Tae-Hyun (Korea Electrotechnology Research Institute) ;
- Lee, Hyun-Goo (Korea Electrotechnology Research Institute) ;
- Kim, Dae-Kyeong (Korea Electrotechnology Research Institute)
- Published : 2007.07.18
Abstract
The owner of underground metallic structures (gas pipeline, oil pipeline, water pipeline, etc) has a burden of responsibility for the corrosion protection in order to prevent big accidents like gas explosion, soil pollution, leakage and so on. So far, Cathodic Protection(CP) technology have been implemented for protection of underground systems. The stray current from DC subway system in Korea has affected the cathodic protection (CP) system of the buried pipelines adjacent to the railroads. In this aspect, KERI has developed a various mitigation method, drainage system through steel bar under the rail, a stray current gathering mesh system, insulation method between yard and main line, distributed ICCP(Impressed Current Cathodic System), High speed response rectifier, restrictive drainage system, Boding ICCP system. In this paper, the mechanism of mitigation method of DC stray current for underground metallic structures is described.
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