Reference Information

Key information from reference documents and guides (e.g.) or succinct descriptions of concepts (e.g. what is risk and how do I visualize it)

Mechanical Bending Rig Extruded-dielectric underground transmission cables experience thermo-mechanical bending during operation and daily load cycling. EPRI is conducting research into their effects on the cables to aid in design of suitable cable constraint and support systems. The study is achieved first through measurements of mechanical parameters of various cable constructions, finite element analysis of the installed conditions, and then empirical verification by a full-scale test rig comprised of a length of full-sized duct. The results of the mechanical parameter tests are incorporated into finite element analysis theoretical models to assist in extruded-dielectric cable installations and designs and enhance operation and maintenance of such cable systems.

Buried Steel Pipe Corrosion Test Station Corrosion management of transmission structures has become increasingly important. The EPRI Buried Steel Pipe Corrosion Test Station is designed to aid in condition monitoring of buried steel pipes for underground transmission pipe-type cable systems. The test station allows the utility to monitor pipe conditions at locations identified with high corrosion risks. These measurements can be used to gain a better understanding of cathodic protection levels, mass loss, corrosion rate, and stray currents on the pipe around the installed test station. The test station measurements are used to help guide corrective maintenance actions and decisions for the buried steel pipe system.

Coming soon

Dissolved Gas Analysis
Robotic Inspection for Underground Vaults

List of Test Facilities

Test Facility Location
Cable Mechanical Bending Charlotte
Buried Pipe Corrosion Charlotte
Vault Component Corrosion Charlotte
Full-scale Test for Paper Cable Lenox
Sensor Research Charlotte
Robotic Inspection Charlotte
Cable Failure Root Cause Charlotte

Description of each test facility (coming soon)


  • P36.001: Design, Construction, Ratings, and Operation and Maintenance of UT Systems
  • P36.002: Extruded Dielectric Cable Systems
  • P36.006: Principles and Practices of Underground Transmission
  • P36.008: HVDC Cable and HVAC Submarine Cable Systems