UEA commences directional drilling on transmission project in Sydney

Posted 9 December 2011

drilling-on-transmissionUEA has been awarded its first works for an Electricity Alliance that includes the design and installation of transmission cable conduits via horizontal directional drilling for a new Zone Substation in Sydney, NSW. This contract is the first to be awarded to UEA by the Alliance and includes the first directional drilling works issued on the project.

The scope of the program covers design and installation of 132kV cable throughout the electricity network, which extends from Sutherland along the seaboard through Sydney to Newcastle and the Hunter region. The work involves installing HV cables, cable trenches, conduits and pits along CBD and suburban roadways and through reserves and parklands and coordinating with the existing services.
The Sydney project comprises 5 underbores in Sandstone from the roadway outside the substation down into the location of the new substation basement. Although being relatively short at 70 metres each, the complexity of the project comes with the 18 metre elevation between the entry and exit points and the need to cross a bank of 25 in service 132kV cables.