토양 매설 배관의 음극방식과 환경인자 간의 상관관계

• Published in: Corrosion science and technology Vol. 21; no. 5; pp. 372 - 380
• Main Authors: 최승헌, S. H. Choi, 원석연, S. Y. Won, 유영란, Y. R. Yoo, 김영식, Y. S. Kim
• Format: Journal Article
• Language: Korean
• Published: 한국부식방식학회 31.10.2022
• Subjects: Buried pipe; Cathodic Protection; Conductivity; Humidity; Temperature; Buried pipe; Conductivity; Cathodic Protection; Temperature; Humidity
• ISSN: 1598-6462

The external corrosion control of buried pipes can be achieved by a combination of coatings and cathodic protection to maximize effectiveness. One of the factors affecting cathodic protection is the environmental soil conditions. Because soil is a kind of electrolyte, the environmental conditions of soil may be changed by the atmospheric environment. Therefore, in this study, changes in environmental soil factors by atmospheric environmental factors were monitored. In cathodic protection, on-potential and off-potential were measured from December 2021 to July 2022. The effects of external environmental factors and soil environmental factors on cathodic protection were analyzed. Changes in outdoor temperature affected soil temperature, and soil conductivity had a proportional relationship with soil humidity, but outdoor humidity and precipitation did not significantly affect humidity and conductivity of the soil. In contrast, in cathodic protection, the on-potential was affected by temperature, humidity, the conductivity of the soil, and the anode used, but the off-potential was little affected by these factors.