Wheatstone Project

Project Overview

The Chevron-operated Wheatstone project is located at Ashburton north, 12km west of Onslow in WA. The Wheatstone project consists of two lNG trains with a combined capacity of 8.9 million tonnes per annum and a domestic gas plant.

Ertech has been awarded several contracts to perform civil construction works since 2013 including general site services, roadworks and earthworks.

Fast Facts

ClientChevron Australia
LocationOnslow, WA
Project duration2013-2018

Scope of works

Construction Village – Building, Utilities, Roadworks and Earthworks
Road and earthworks services to the 3,800 bed camp including:

Kerbing
Supply and installation of signage and line marking
Supply and installation of bollards and metal guardrails
Installation of footpaths and pram ramps

Miscellaneous Site Services
Miscellaneous site works, project management and services coordination including:

Planning, executing, monitoring and controlling construction activities
Supply of plant and people resources to meet schedule
Management of subcontractors and procurement

Removal of Temporary Roads
Rehabilitation works to remove temporary roads including:

Safe excavation of approximately 240,000 cubic metres of general and granular fill materials, rock protection batter, base and sub-base materials
Transport of the excavated materials to designated locations in the vicinity and placing in segregated stockpiles
Removal and disposal off-site of geotextile, geo-web and HDPE culverts

General Services 3 Contract
Piping works, concrete works and miscellaneous works including:

Piping Works:

All permanent underground plant piping and cathodic protection
Marine outfall pipeline and main utility infrastructure pipeline corridor
Trains 1, 2 underground fire mains & common corridor flushing and drying
DOMGAS Metering Station / Domestic Gas Temporary Fire & Gas Detection System
Installation and turnover of underground fuel gas line

General Services 3 Contract

Concrete Works:

Storm water catch basins & culverts ; quarantine fencing footings; fire hydrant platforms; duct bank road crossings; and CCTV & light pole footings

Miscellaneous Works:

Installation and maintenance of temporary building, fencing for site boundaries and borrow pits; traffic signage, road side delineators and maintenance of road markings
Maintenance of generator, fire extinguisher and lighting plant equipment; all temporary substations and construction power network
General carpentry works – fabricating access stairways, tables, desks and shelving
General earthworks – civil support for electrical works and general road maintenance
Electrical works – installations for all facilities supporting site construction activities; LOTO isolations
Eradication of mesquite and vector rodent and insect control site wide
Site dewatering/clean up after cyclones/rain events
Sampling and testing of potable water site wide
Traffic management to assist with module movements
Warehouse construction
Water treatment plant upgrades

General Services 3 Contract

Operation and Maintenance Works:

Assets providing drinking water, construction water and wastewater treatment and operation
Desalination plants – capable of producing 6M L of fresh water per day
Remineralisation plants – capable of making 2M L of desalinated water to drinking water
Wastewater treatment plants – capable of treating 1.5M L of wastewater produced at construction camps
Wastewater discharge outfall pipeline – disposal of 8M L per day of brine and treated wastewater
Servicing and emergency maintenance of facilities that contain water chillers and ice machines
Supply of water and ice to concrete batch plant
Build, operate and maintain fuel farms