NS159
NS159: Installation of Cables and Conduits using Trenchless Techniques
Trenchless techniques provide an alternative method to open trenching for the installation of new underground utility services and techniques minimise interference with existing features, facilities and traffic.
Scope
This Network Standard is to be used for the installation of underground cables and conduits by trenchless techniques where such techniques are either specified by Ausgrid or have been requested by a third party and reviewed by Ausgrid on a project specific basis. This Standard covers underground cables of all voltages.
Trenchless techniques include, but are not limited to, micro-tunnelling, horizontal directional drilling (HDD), auger boring, guided boring, impact moling, rotary moling, rod pushing, pipe ramming, thrust boring and jacking. For the purpose of this Standard, tunnelling using road headers or tunnel boring machines falls outside the scope of this document.