Commercialization of ILI Technology which Accurately Detects, Locates, and Measures Pipeline Girth Weld Defects
Diakont Sensor Identifies Defects Inside Natural Gas Pipelines
Diakont Advanced Technologies, Inc
Recipient
San Diego, CA
Recipient Location
39th
Senate District
78th
Assembly District
$236,704
Amount Spent
Completed
Project Status
Project Result
Diakont integrated the MS-EMAT sensor on Diakont's existing pipeline robot. In addition, Diakont demonstrated the MS-EMAT sensor on a pipeline in the Pacific Gas and Electric Company service territory. The project is completed, and the final report is published and posted on the Energy Commission's website at http://www.energy.ca.gov/2015publications/CEC-500-2015-028/CEC-500-2015…
The Issue
America's natural gas pipeline network is more than 300,000 miles of large-diameter transmission lines, and most were constructed before 1980. Pipeline girth welds are particularly sensitive to ground movements. The seismic nature increases the importance of determining the condition of girth welds to ensure system safety. There are no sensors available to inspect these highly sensitive regions internally, and pipeline operators typically rely on hydrostatic testing. It is often unable to detect growing defects that may cause damage. The Diakont technology will provide the industry with a needed capability to perform inspections.
Project Innovation
Diakont demonstrated its multichannel scanning electromagnetic acoustic transducer (MS-EMAT) fitted on a robotic crawler and performed comprehensive remote in-line inspection of gas pipeline girth welds. The MS-EMAT sensor technology inspects for hidden defects remaining from construction and operational defects, such as cracks induced by ground movement. These types of defects worsen over time and reduce pipeline safety. The sensor provides a comprehensive method to evaluate a pipeline girth weld and provide operators with accurate data on the infrastructure integrity of the California pipeline network. The sensor technology performance has the potential to provide operators with valuable information on critical pipeline features.
Project Benefits
The MS-EMAT technology can potentially replace current best practices for validating the integrity of pipeline girth welds. The MS-EMAT sensor will allow operators to accurately assess pipeline girth welds without putting its integrity at risk.

Affordability
Relative to hydrostatic testing, this technology can perform in-line inspection to detect girth weld defects faster and without excavation costs.

Reliability
Early and timely damage detection using in-line inspection technology will improve reliability of gas pipelines in California.

Safety
Early and timely damage detection and adequate measures to prevent pipeline failure will improve safety of gas pipelines in California.
Key Project Members

Brian Carlson
Match Partners

Diakont Advanced Technologies, Inc
