Intelligent in-line inspection and other inspection methods such as above-ground CIPS or DCVG surveys, external UT inspection, etc. locate and size metal anomalies in the pipe wall. This information is used in Fitness-for-Purpose Assessments.
In addition, the information can also be used to diagnose active corrosion mechanisms and to provide a clearer focus for the Risk Assessment procedure, for example for un-piggable pipelines or pipelines which have not been inspected before.
The diagnostics service typically includes the following components:
- Assessment of the causes of external and / or internal corrosion in gas and oil lines
- Analysis of CP shielding caused by loss of adhesion in field applied pipe coatings and field joint coatings
- Assessment of disbonded coatings with active corrosion
- Assessment of electrical interference
This information enables the operator to develop long-term integrity management plans focused to address the root cause of the problem and implement cost-effectiveness control and mitigation measures.
