Introduction: One of a Network owner’s main priorities is maintaining its assets in a cost-effective way. National Grid Electricity Transmission own and maintain over 1,400km of underground cables, which reflects roughly 15% of its transmission system.
This project will investigate whether any relationships exist between asset condition and a range of operational and environmental data sets; proving insight into factors which can influence our condition assessments. This knowledge will allow NGET to quantify and mitigate the risk posed by different design, operational and environmental factors, with the aim of improving our management of cable systems.

Objectives: To identify key data sources (or combinations of sources) that may be used to estimate underground cable asset condition, which can be used to support our condition assessments.