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http://dx.doi.org/10.7842/kigas.2016.20.6.16

A Study on the Corrosivity according to Soil Characteristics and Electrolytic Protection for the Materials of Fuel Gas Pipe  

Yim, Sang-Sik (Safety Research Division, Korea Gas Safety Corporation)
Kim, Ji-sun (Safety Research Division, Korea Gas Safety Corporation)
Ryu, Young-don (Safety Research Division, Korea Gas Safety Corporation)
Lee, Jin-Han (Safety Research Division, Korea Gas Safety Corporation)
Publication Information
Journal of the Korean Institute of Gas / v.20, no.6, 2016 , pp. 16-22 More about this Journal
Abstract
Coating pipe(PLP) has been generally used in buried site for protecting the corrosion. To prevent the damage by occurring the defect, other construction or execution works, an anti-oxidation environment was forcibly made by using protective potential. Coating and protective potential are applied simultaneously, but corrosion rate or defects are not easy to observe because soil composition has many uncertainty. Also, defect of coating pipe can not be directly observed. A corrosion coupon can easily measure a corrosion rate directly. The corrosion rate was measured with 6 scenarios using corrosion coupon during about 1 year(6 scenarios are based on soil type and protective potential or not in this research. Resultingly, the corrosion coupon has not occurred in the case of protected by potential current, but corrosion has occurred in a non-protected site. The corrosion rate was measured at least in the clay, and the propensity of corrosion rate was similar in other soil(sand and loams). The local corrosion has occurred in the clay because of high water content. On the other hand, general corrosion was occurred in sand and loams. Commonly, sand is not to corrosive soil. Although, corrosion occurred in sand can be estimated by chemical component and valid with chemical analysis report.
Keywords
PLP; Corrosion coupon; Corrosion rate; Local corrosion; General corrosion;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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1 D.H. Jeon, W. N. Kim, K. J. Kim and E. H. Yi., "The Study on Corrosion Fatigue and Cathodic Protection of the Steel Plates Used fo the Shipbuilding", KOSME, 9(2), 126-142, (1985)
2 J.H. Jeong, Y. H. Kim, K. M. Moon, M. H. Lee and J. K. Kim, "Evaluation of the corrosion property on the welded zone of seawater pipe by A.C shielded metal arc welding", KOSME, 37(8), 877-885, (2013)
3 J.J. Kim, M. S. Seo and D. K. Kim, "A Study on Development of Cathodic Protection on Underground Pipeline Measuring System", KIGAS, 18(5), 66-71, (2014)
4 C. H. Bae, J. H. Kim, J. H. Kim and S. H. Hong, "Assessment of External and Internal Corrosion Growth Rate for Metallic Water Pipes", KGES, 9(1), 17-25, (2008)
5 Winston Revie R., "Oil and Gas Pipelines, integrity and safety handbook", WILEY, New Jersey, (2015)
6 K. D. Park, Y. J. Shin and J. Y. Lee, "The Development of Corrosion Standard System of Water and Wastewater in Soil Environment", KSMPE, 5(4), 7-12, (2006)
7 S. K. Oh, "A Study on Failure Frequency Medel for Risk Analysis of Natural Gas Pipeline with Comparison Overseas Failure Data", KIGAS, 18(3), 60-66, (2014)
8 W. S. Kim, J. I. Jang, "The Effect of Hydrogen on Mechanical Properties of Gas Pipeline Material : 1 Tensile property", KIGAS, 15(3), 66-73, (2011)
9 H. T. Jeong, B. H. Choe, Y. J Lee, J. H. Lee, K. Y. Hong, J. H. Baek, W. S. Kim, "Dynamic Ductile Fracture Analysis of Natural Gas Pipelines on the Basis of Material Grade and Charpy V-Notch Impact Energy", KIGAS, 16(5), 35-40, (2012)
10 J. H. Baek, W. S. Kim, "Reliability Assessment for Pressure Uprating of Natural Gas Transmission Pipelines", KIGAS, 15(5), 35-40, (2011)