FEATURE CABLING & CABLE MANAGEMENT
Refurb of iconic Mersey tunnels
As part of a significant refurbishment project on the Queensway and Kingsway tunnels in Liverpool, over 12,000 metres of Prysmian’s FP PLUS enhanced fire resistant cable has been specified for the fire alarm systems
O
pened by King George V in 1934, the Queensway tunnel, known locally as
the Birkenhead tunnel, stretches over two miles under the River Mersey connecting Liverpool to Birkenhead. Then, in 1971 the Kingsway tunnel, locally known as the Wallasey Tunnel, was opened by Queen Elizabeth II to connect the one and a half miles between Liverpool to Wallasey. The Queensway tunnel is serviced by six
ventilation stations that house the fans and associated machinery to provide clean air to the tunnel. The Kingsway tunnel is serviced by two ventilation stations.
As part of the new refurbishment
project, Stuart Pinder, project officer at Merseytravel, was responsible for managing the installation of the cable. He explained, “The fire alarm systems in both tunnels and the ventilation stations had come to the end of their lives and were identified for replacement as the original analogue systems were installed in the early 1990s. “Under current BS 5839-1, an ‘enhanced' fire resistant cable was required and so Prysmian FP PLUS was specified, installed and commissioned. BS 5839-1 is a code of practice for design, installation,
Above: under current BS 5839-1, an ‘enhanced' fire resistant cable was required for the Queensway and
Kingsway tunnels and so Prysmian FP PLUS was specified, installed and commissioned
commissioning and maintenance of systems in non-domestic premises and is the code used by designers, installers and building owners.” Alastair Croft, project manager at EFT, the contractors installing the FP PLUS cable system, added, “Prysmian cable was chosen for its technical performance. It is a sound choice as its unique dressable construction makes for easy installation as well as being a financially viable option.” In the unfortunate event of fire, Prysmian’s ‘standard’ and ‘enhanced’ FP cables retain vital circuit integrity which allows firefighters time to manage the fire and gives an increased chance of evacuating the building safely. The new fire alarm systems have been installed with minimum disruption to tunnel users.
Prysmian
www.prysmian.com T: 023 8029 5029
Enter 210 CABLE FOR UK OFFSHORE WIND FARM EXTENSION
ABB has won an order worth around $30m from wind power development company DONG Energy to supply a high voltage export cable system that will transmit power from the UK’s Burbo Bank Extension Offshore Wind Farm. ABB will design, engineer, supply and commission 25km of 220kV AC
submarine cable and the related offshore substation cable. ABB will also supply 32km of AC underground cables and the associated substation cables as well as the cable joints, accessories and terminations related to the project. The Burbo Bank Offshore Wind Farm is situated on the Burbo Flats in
Liverpool Bay at the mouth of the Mersey river. Burbo Bank receives the full force of the wind from the Irish Sea in the west making it an ideal location for offshore wind power generation. The Burbo Bank Extension covers an area of 40km2
and has an
estimated generating capacity of up to 258MW. “Offshore wind is making an increasing contribution to boost the share
of renewables in Europe’s energy mix and this project will support the UK government’s efforts in this area,” said Claudio Facchin, head of ABB’s Power Systems Division.
ABB
www.abb.com T: 01925 741 111
20 NOVEMBER 2014 | ELECTRICAL ENGINEERING Enter 211 / ELECTRICALENGINEERING
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