희생양극의 수명에 미치는 인접 강파일의 음극방식 영향
Effect of Cathodic Protection of Adjacent Steel Piles on the Life of Sacrificial Anode
1
조회
0
다운로드
5
인용
0
참고문헌
키워드
초록
There are two cases when the life of a sacrificial anode is shortened from the designed life: one case results from self-corrosion of the anode due to contamination by sea water in the other case, however, electrical current to protect some given steel piles overflows to protect other, adjacent non-protected steel piles. In this study, the variation of polarization potential of nine steel piles, being protected cathodically and with anode-producing current between anode and steel piles, was investigated. Parameters were varied, such as the eighth and ninth steel piles eitherconnected electrically or not, and whether the ninth steel pile was protected by another sacrificial anode or not. The current produced by the sacrificial anode decreased when the ninth steel pile was cathodically protected by the anode of another pile. However, produced current increased when the ninth steel pile was not connected to another anode. The study concludes that the life of a sacrificial anode can be prolonged or shortened depending on whether adjacent steel piles are cathodically protected or not.
Abstract
There are two cases when the life of a sacrificial anode is shortened from the designed life: one case results from self-corrosion of the anode due to contamination by sea water in the other case, however, electrical current to protect some given steel piles overflows to protect other, adjacent non-protected steel piles. In this study, the variation of polarization potential of nine steel piles, being protected cathodically and with anode-producing current between anode and steel piles, was investigated. Parameters were varied, such as the eighth and ninth steel piles eitherconnected electrically or not, and whether the ninth steel pile was protected by another sacrificial anode or not. The current produced by the sacrificial anode decreased when the ninth steel pile was cathodically protected by the anode of another pile. However, produced current increased when the ninth steel pile was not connected to another anode. The study concludes that the life of a sacrificial anode can be prolonged or shortened depending on whether adjacent steel piles are cathodically protected or not.
참고문헌 (13)
- 강관구조물의 방식대책에 관한 연구, "문경만", 해양수산부, 379~ (1995)
- 문경만, "중방식 도료의 내식성에 미치는 첨가제의 영향", 한국해양공학회지, 21(3), pp.65~70 (2007), 한국해양공학회
- 전대희, "부식과 방식의 관리", pp.393~409 (1985), 一中
- Baeckmman,W.V., "Handbook of Cathodic Corrosion Protection", pp.367~389 (1997), Gulf Publishing
- Boening,D., "Offshore Cathodic Protection Experience and Economic Reassessment", the Offshore Technology Conference (1976)
- Compton,K.G., "Factor Involved in Corrosion of Lead Cable Sheath", CORROSION, 17, pp.115~118 (1961)
- Gartland,P.O., "Effect of Flow on the Cathodic Protection of a Steel Cylinder in Sea Water", CORROSION, 40(3), pp.127~133 (1984)
- Hartt,W.H., "A Principle Determination in Cathodic Protection Design of Offshore Structures", Corrosion, 99(627) (1999)
- Morgan,J.H., "Cathodic Protection,2nd edition", pp.257~360 (1987), NACE
- Newman,J., "Cathodic Protection with Parrel Cylinders", J.Electrochem.Soc, 130(12), pp.3554~3559 (1991)
- Strommen,R., "Computer Modeling of Offshore Cathodic Protection Systems Utilized in CP Monitoring", the Offshore Technology Conference (1982)
- Talati,J.D., "Maximum Utilization Current Density", CORROSION, 40(2), pp.88~91 (1984)
- Wagner,J., "Cathodic Protection Design I", pp.3~28 (1992), NACE International