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United Kingdom, London - uk/28

Cable Duct

City of London project comprising 2.8 km of 2.59 m and 2.44 m-diameter tunnels into which six 132kV circuits will be installed to enable linking of three inner London sub-stations. Designed by Brown & Root and constructed by J Murphy and Sons for London Electricity. Weaving alignment avoids other cable ducts, underground railways, large sewers and telecomms. Lovat ME116SE series 11400 2.95 m-diameter EPBM erecting Macrete concrete wedge block lining due to complete September, 2000. Further 1.2 km of tunnel in design to link a fourth sub-station into the network adjacent to the Tate Art Gallery includes a Thames crossing. Visit www.halliburton.com, www.macrete.com and www.lovat.com August 2000.Negotiated procedure, deadline 31st December, 2002 for construction of a 1.2 km-long 2.59 m-diameter tunnel through Woolwich and Reading Beds and London Clay to connect the Bankside main substation to Farrington Street. Work to commence in second quarter 2003 with completion by end-2004. Visit http://ted.eur-op.eu.int/udl?request=Seek-Deliver&language=en&docid=186483-2002, OJ S 234, or contact 24seven Utility Services Ltd, Bexleyheath, fax +44 2082988104. 50/02.Restricted procedure, deadline 18th March, 2005 for design and construction of the Lower Lea Valley cable tunnels, consisting of one or two tunnels (between Hackney and West Ham substations) with diameters in the range 2.5 m to 6 m and a route length of approximately 5.6 km each, together with associated works. Visit http://ted.publications.eu.int/udl?request=Seek-Deliver&language=en&docid=024856-2005, OJ S 26, or contact London Development Agency, London, fax +44 2076802040. E-mail andrewlomas@lda.gov.uk or tunnelworks@lda.gov.uk 07/05.J Murphy & Sons has been appointed to build massive tunnels which will replace overhead power lines that cut across a swathe of east London. The GBP70 million project is the first phase of a GBP200 million scheme, in which 50 huge electricity pylons will be removed. The removal of pylons will free up more than 40 hectares of land for development of the Olympic Park for the 2012 Games in London. Builders will construct 12 km of tunnels to replace power lines which run across the Lower Lea Valley. Two power tunnels will be constructed 20 m underground, one at 2.5 m for EDF Energy and the other 4 m in diameter for National Grid. The larger is on the same scale as a London metro tunnel and will have its own monorail running down the middle for inspection and servicing. The tunnelling work comprises two cable tunnels and associated shafts. The tunnels will each be approximately 6 km. Visit www.lda.gov.uk and www.murphygroup.co.uk 35/05.



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