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Cathodic protection for older bay line was design challenge

Journal Article · · Pipe Line Ind.; (United States)
OSTI ID:5323520
One of the first steps taken to restore cathodic protection on a 25-year old pipeline connecting New Jersey and New York in Newark Bay involved the rehabilitation of insulating joints to establish electrical isolation of the 1.9-mile, 12-in coated pipe section. The baywater's resistivity level of about 50 ohm-cm was only 1/100 of that of the surrounding onshore soils; these conditions resulted in an extremely low pipe-to-soil resistance. Because of the high cost of installing sacrificial anodes across the bay, rectifier-powered cathodic-protection systems that use easily replaceable point anodes near the shore were chosen; this approach required an extremely careful calculation of the pipeline's attenuation characteristics. The legal and environmental procedures involved in constructing the system caused unexpected delays of about 2 years.
OSTI ID:
5323520
Journal Information:
Pipe Line Ind.; (United States), Journal Name: Pipe Line Ind.; (United States) Vol. 53; ISSN PLINA
Country of Publication:
United States
Language:
English