Mar 2013
Electricity Transmission
Ratings of Cables in Tunnels (RoCiT)
Mar 2013
National Grid Electricity System Operator
National Grid TO Innovation Team
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Innovation Funding Incentive
Asset Management
This project will address rating methods employed in the design of both forced cooled and naturally ventilated cable tunnels.
The objectives of this project are to:

  • Review the ratings methods used to design cable tunnels

  • Assess existing operational data from cable tunnels, including Distributed Temperature Sensor (DTS) data

  • Develop a specification for a rating method for cable tunnels installations with independent cable circuits.