The purpose of this step depends on the type of direct assessment undertaken:
ECDA -- Indirect inspection is used to identify the locations of coating faults, insufficient cathodic protection, electrical shorts, electrical interference, geologic current shielding and other pipeline anomalies.
ICDA -- Indirection inspection is used to identify locations at risk for internal corrosion, with consideration of the gases, liquids and solids passing through the pipeline.
SCCDA – Indirect inspection is used to identify the corrosive agents and tensile stresses at work on a pipeline.
Data from these inspections is consolidated and compared. Specialists then analyze the results to identify indications of corrosive activity.
The pipe is examined to assess the degree of corrosion damage. Direct examination requires excavation so physical inspections and nondestructive tests can be conducted on pipe surfaces and, in some cases, the surrounding soil and water.
Finally, we work with you to assess the overall effectiveness of the direct assessment and determine a timeframe for reassessment. Because ECDA, ICDA and SCCDA are continuous improvement processes, it helps to streamline future assessments. With an assessment plan in place, over time accumulated data makes it easier to identify locations where corrosion has occurred, is occurring or may occur in the future.