Integrity Assurance

Wolverine inspects its pipelines with the latest technology. “Smart pigs” are internal inspection tools that are loaded into the pipeline and are carried through the line by the flow of product to help identify early signals of potential integrity concerns such as thinning pipe walls or dents caused by third party excavation equipment that have struck our pipeline without our knowledge. The smart pigs have onboard computers that can detect corrosion, dents, and other anomalies and provide us with details on their location. The anomalies are reviewed against the U.S. Department of Transportation (“DOT”) regulations and repair criteria to help prioritize the repairs.

Corrosion prevention is a major focus for Wolverine. Wolverine’s corrosion personnel utilize many techniques to monitor the pipeline to ensure the pipeline does not corrode. Cathodic protection systems (constant low voltage electrical current applied to the pipeline) and protective coatings extend the life of the pipeline by keeping it from rusting.

Every week, weather permitting, we fly over the pipeline right-of-way looking for excavation equipment or activities that may be a threat to the pipeline. Unusual or dead vegetation is also reported. All these reports are investigated by Wolverine employees.

Wolverine supports the “Call Before You Dig”campaign. Wolverine Damage Prevention Specialists respond to one-call notifications, mark our pipeline and are present when excavation occurs near our pipeline. Unintentional damage by third parties not utilizing the one-call system is a leading cause of significant pipeline incidents.

The above and other operation and maintenance programs are regulated by the U.S. Department of Transportation’s Pipeline and Hazardous Materials Safety Administration (PHMSA).