Launch from a pigging valve

 Pipeline Description:

16” – 4058m refined product pipeline connecting an import terminal with a storage depot. 

Why is it challenging?

Various refined hydrocarbon products are imported through this pipeline: JET A-1, diesel, and premium grade gasoline. The pipeline was constructed without consideration for internal pig-based inspection. Pigging was foreseen only to permit batching pigs to be launched to separate different products. Batching pigs are launched from a 3-way trap valve. This installation does not allow launch of typical ILI tools. 

Target of the inspection:

High resolution geometric (GEO), mapping (XYZ) and metal loss (MFL) inspection.