Project: Pipeline Integrity Assessment
Phase 1:Revisit of 2 off Target Locations where previous degradation had been highlighted by ILI. Subsea AUT Inspection comprised 20 off grid scans for Target Location 1 and 10 off grid scans for Target Location 2. Accurate inspection allowed detailed measurements of both the extent and depth of the degradation to be produced and also confirmed relative minimum thicknesses.
Phase 2: Revisit of current condition of Target Locations and prediction of relative corrosion
The Inspection activity and the subsequent FFS concluded that the subsea export pipeline could operate safely and that the corrosion growth was in line with the expected degradation highlighted as part of the Design Basis. This provided confidence in continued operation with an extended period to the next inspection. The benefits of conducting a FFS with Sonomatic are: