Effect of induced alternating current voltage on cathodically protected pipelines paralleling electric power transmission lines

被引：19

作者：

Kajiyama, F ^{[1
]}

Nakamura, Y ^{[1
]}

机构：

[1] Tokyo Gas Co Ltd, Fundamental Technol Res Lab, Minato Ku, Tokyo 1050023, Japan

来源：

CORROSION | 1999年 / 55卷 / 02期

关键词：

alternating current; cathodic protection; direct current; instant-off method; pipelines; power transmission lines; utilities;

D O I：

10.5006/1.3283980

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A field study was conducted to evaluate the effect of induced alternating current (AC) voltage on a cathodically protected pipeline paralleling an electric power transmission line. The study used the instant-off method, with steel probes simulating coating defects. Data regarding probe potentials and currents were compared with the proposed tentative criterion for cathodic protection (CP). Positive proof of the adequacy of CP was obtained after field testing for 1 year, when probes were removed to ascertain corrosion rates.

引用

页码：200 / 205

页数：6