Understanding the technique
Measures pipe-to-soil electrical potentials at closely spaced positions along an accessible pipeline route. The survey supports evaluation of cathodic-protection performance and identification of areas requiring attention.
Where it adds value
Buried metallic pipelines with cathodic-protection systems.
The purpose is to provide evidence that supports a defined asset decision: prioritizing maintenance, investigating degradation, assessing serviceability or documenting equipment condition. The examination is planned around the asset's operating context and the information needed by the owner.
Inspection outputs
A georeferenced potential profile, survey observations and locations requiring further investigation.
Planning considerations
Measurement interpretation considers reference electrodes, electrical continuity, interference and current interruption where required.
From scope to decision
Provide equipment identification, drawings, material details, operating conditions and previous inspection records where available.
Confirm the inspection objective, accessible locations, coverage, acceptance basis, site arrangements and reporting requirements.
Review recorded findings against the agreed scope, identify any coverage limitations and define the need for further inspection or engineering assessment.
Project questions
What information helps define a quotation?
Share the asset type, location, quantity, inspection objective and desired schedule. Drawings, previous reports and access information help the team prepare a realistic scope.
Can this technique be combined with other services?
Yes. Complementary examination or engineering assessment may be needed to characterize relevant findings. The combination depends on damage mechanisms, material, geometry and the decision required.