Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

Bernice breaks through on UK Power Network’s deep cable project

The tunnel boring machine (TBM) driving UK Power Network’s deep cable tunnel from Brentford Park has successfully completed its drive to the reception shaft at Willesden.

Main contractor J Murphy and Sons said that the 2.59m internal diameter Lovat TBM – named Bernice and launched in July 2012 – completed the 1.27km drive clearing the way for the construction of a new 132kV cable circuit to start to link the substations at Brentford Park and Taylors Lane in Willesden.

“This is a major milestone for our tunnelling team,” said Murphy Tunnelling, Civils and Power managing director Darren Ramsey. “The tunnel has been delivered safely, on time and budget.”

During the drive that was completed through the London Clay at depths of 28m below ground level, the 50t TBM advanced the tunnel by an average of 16m every 10 hour shift and successfully navigated several 70m radius bends.

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Please note comments made online may also be published in the print edition of New Civil Engineer. Links may be included in your comments but HTML is not permitted.