INTRODUCTION
Boretech were engaged by a new client to install the conduit for the HV conduit upgrade at Fremantle Port.
SCOPE
Scope of works were to install 1,650m of DN160pe power by HDD during both day works and night works.
EQUIPMENT
: BT-143, Vermeer 60×90 Drill
: BT-52, Semi with trailer
: BT-134, STG 8000ltr Vac Truck
: BT-63, Kubota 5.5t Excavator
: BT-07, Pipe trailer
: BT-135 truck and triaxle trailer
: Telehandler
: BT-50 Hilux dual cab light vehicle
: Digi Track DCI F5 sonde and Tracking system
GROUND CONDITIONS
Reclaimed Ground and sand fill.
CHALLENGES
– Crews faced many challenges on this project such as contacting abandoned granite sea wall.
– Unknown services and abandoned services with no DBYD due to being inside private property.
– We tackled these challenges as they came modifying the drill shots constantly extending drill shots from 100m to 297m to allow required depths and grades to make successful bore passes.
– Multiple 150 to 297m bore shots in reclaimed ground filled with ruble with no allowance for flow holes. The crew maintaining flow through modifying mud mix and flow rates as the ground changed.
– Bore shot Planning in a heavily congested area crossing critical assets such as oil lines, multiple HV powers, Fibre optic cables and large critical mains all in a very sensitive environment.
TEAM SUCCESS
Our crew took these challenges head on completing some of the longest shots consecutively that Boretech have completed to date – emptying all the racks on our D60 drill on multiple occasions.
DURATION
This project was carried out over 9 months, from planning to completion with multiple redesigns working in with availability and access issues from multiple parties within the Port Authorities site.
DATE COMPLETED
October 2025
