National Grid Electricity System Operator
National Grid TO Innovation Team
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Innovation Funding Incentive
Gas Distribution Networks
Internal corrosion is a major factor limiting the life of Aluminium Conductor Steel Reinforced (ACSR) and a crucial stage in the corrosion process is the loss of
zinc from the central galvanised steel strands.
Once this galvanising is lost the aluminium strands are subject to galvanic
corrosion and the conductor deteriorates rapidly. The effects of this form of
internal corrosion are not visible or detectable by infra-red methods until the
conductor is near to failure.
Phase 1 of Cormon ACSR Equipment replacement. National Grid are seeking
a replacement of the existing overhead line corrosion detector. This project
investigates the requirement for a new corrosion detector. This project is a
preliminary phase to identify the requirements of National Grid and to
understand the costs and timescales that would be involved in developing,
testing and trialling an Overhead Line (OHL) corrosion detector.