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Corrosion of underground pipelines costs the oil & gas industry millions of dollars each year. Due to more recent safety regulations enforced by the government, pipeline operators are coming under great pressure to provide enhanced protection of pipelines in high-consequence areas, in the form of pipeline integrity programs.  These programs are developed to improve safety by assessing and reducing the impact of external corrosion on pipeline integrity. Pipeline operators are now required to follow a process called the External Corrosion Direct Assessment (ECDA). Such a program is laid out in the NACE International Recommended Practice RP0502-2002.