The purpose of this bore was to install a connecting pipeline from the wells on the “Southlands” site to the decontamination plant on the Orica site. This involved horizontal directional drilling (HDD) under the main container terminal rail line, under a transmission HV easement approximately 20 metres wide and under two high pressure gas mains. Ausgrid also insisted that the HV run was further protected by ramming sheet piles up to four metres below the invert of the cables on the approach side of the bore to act as a barrier. Rail Infrastructure also required the rail line to be surveyed prior to the project starting and after each drilling or reaming pass.
This bore linked the wells located along Foreshore Road back to the Southlands site for connection back into the main pipeline. Horizontal directional drilling was the clear choice so as to reduce the impact on the local golf course whilst avoiding the many major utilities along the bore path.
For more information about this project or UEA Trenchless, please send enquiries to Steven Hopkins.