Seawater flooding is a common form of secondary oil recovery. To minimize the introduction of bacteria and oxygen into the oil field, the seawater is treated and de-aerated before being injected into the oil field. Seawater treatment plants have a large number of underground piping systems that can be protected by impressed current cathodic protection systems (ICCP). These ICCP systems can interfere with each other and result in stray current corrosion. The detection and correction of the interference is important to extending the useful life of the seawater treatment facility.

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