Wednesday, March 25, 2009: 9:30 AM
C307 (Georgia World Congress Center)
Cased pipe segments are generally believed to be very safe; however, external corrosion compromising the integrity of the cased pipes does exist. The primary types of external corrosion include atmospheric corrosion and corrosion by electrolyte. The external corrosion by electrolyte occurs when cathodic protection (CP) is shielded, for instance, by the casing wall, by the insulator spacers, or by accumulation of mud/deposits in the casing-carrier pipe annulus. When a metallic short is present, any CP benefit could be completely eliminated.
This study addresses the significance of corrosion damage, for which a statistical analysis of