Stress Corrosion Cracking (SCC) is a major integrity threat for many gas and oil pipeline operators. Once SCC is detected on a pipeline, if the severity of the SCC is determined to be class III or IV, it is the operator’s responsibility to ensure that the risk of a SCC failure is adequately mitigated. This paper discusses several design strategies implemented by TransGas for the purpose of this UT ILI run including: designing a custom launcher to facilitate easy insertion of batching pigs, UT ILI tool, and batching liquid; development and use of a flow / speed control system utilizing pressure differential readings from orifice meters, as well as many of the logistical challenges associated with the project.

This content is only available via PDF.
You do not currently have access to this content.