FLAW DETECTION AND RESISTANCE MEASUREMENT OF UNDERGROUND PIPELINE COATINGS.

被引:0
|
作者
Takiguchi, Shuichiro
Hachisu, Yoshio
Ikeda, Shintaro
Seino, Kiyomi
机构
来源
Boshoku Gijutsu/Corrosion Engineering | 1973年 / 22卷 / 09期
关键词
CORROSION PROTECTION; CATHODIC;
D O I
10.3323/jcorr1954.22.9_383
中图分类号
学科分类号
摘要
Methods of locating coating flaws and measuring insulating resistance of buried pipelines have been compared using a model pipeline which had artificial flaws. The coating systems were polyethylene and reinforced asphalt. The results show that a pin type electrode method is more sensitive than the Pearson type holiday detector in locating coating flaws. Among several procedures used for the resistance measurements, the voltage drop method is most reliable.
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页码:383 / 392
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