Murphy secures Croydon cable contract from National Grid


August 27, 2018 – Murphy has secured a contract worth £35m from the National Grid to replace one of two high-voltage underground cables near Croydon in South London.

The work also involves designing, installation and testing of the new cable, and replacing the tunnel ventilation and telecommunications system.

Murphy CEO John Murphy said: “We’re delighted to have been awarded this contract and look forward to developing our relationship with National Grid to carry out this essential work.

“We have decades of experience installing cables, as well as building the tunnels that house them. I’m pleased we can use our engineering expertise to play our part in upgrading the country’s power highways and maintaining reliable supplies for millions of consumers.”

The National Grid has decided to replace the circuit with a new ‘XLPE’ cable system, as the current cable is nearing the end of its asset life.

The new cable will be installed inside the existing Croydon tunnel, which will increase the performance and resilience of the network.

National Grid project engineer James Kennerley said: “National Grid are pleased to be working with J. Murphy & Sons Limited on what is an important asset replacement project which will provide security of electricity supplies across South London.

“By installing cables within tunnels, National Grid are taking these assets away from the highway and reducing the incidences of disruption due to roadworks across the Croydon and wider London area.

“Throughout the extensive tender period, National Grid were impressed by J. Murphy & Son’s technical solution to the complex engineering challenges this project entails, and look forward to implementing these innovative construction methodologies during the works.”

The contract has been awarded following a tender to undertake the design, supply, installation, testing and commissioning of a new 400kV cable circuit between the Beddington and Rowdown substations, through the existing Croydon tunnel.

The project will start in October 2018 and the installation and related work is due to be completed by October 2020.



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