Gorgon Project Barrow Island

Project Overview

Ertech has been a major service provider to Chevron Australia’s Gorgon Project for over ten years.

The Gorgon project, located on Barrow Island off the coast of Western Australia comprises a three-train, 15.6 million tonnes per annum LNG facility and a domestic gas plant. The island is a Class A Nature Reserve which required stringent environmental practices, which saw Ertech develop it’s own Chevron-approved Quarantine facilities.

Ertech’s involvement with the Gorgon Project has included delivering construct only, design and construct, and minor works, as well as operational and maintenance services. Ertech has provided an integrated multi-disciplined service including earthworks, structural, electrical and mechanical disciplines.

From being one of the first contractors on the Project, Ertech has in 12 years delivered a diverse range of works including near shore marine structures, pipelines, fuel farms, site facilities, airport upgrade, fuel arms, waste and potable water, a Reverse Osmosis plant and today provides maintenance services for civil infrastructure and earthworks. An example of these works have been highlighted below.

Fast Facts

ClientChevron Australia
LocationBarrow Island, WA
Project duration2009 - Current

Site Development and WAPET Landing

Ertech provide a broad range of services to develop the site, which included:

Preparation of the 22Ha site for the construction village
Crushing over 500,000t of pavement materials
Construction of 300,000m2 of sealed roads
Erection of 4 communications towers
General civil works
Supply and install >20km pipelines
Design and installation of transportable office, ablution and crib facilities
Providing services including mechanical, electrical, potable and wastewater services

Fuel Farm

Design, manufacture, supply, assembly and commissioning of 8 x 110,000kl diesel fuel farm tanks as part of the WAPET Landing including:

Construction of all civil and foundation works
Design, supply, procurement, installation and commissioning of 4 double-walled 65,000 litre diesel import and storage and dispensing tanks.
Earthworks and concrete foundations

Reverse Osmosis Plant

Design and installation of a 1 million litre per day (1ML/day) Reverse Osmosis (RO) Plant as part of the WAPET Landing including:

Earthworks and concrete foundations
Installation of a pre-packaged wastewater treatment plant (WWTP) including mechanical and electrical installation
Supply and installation of 20km of HDPE pipe, up to 315mm in diameter
Construction and HDPE lining of bridging utilities area to accommodate bridging RO plant, 1 ML/day RO plant, two additional 700kl/day RO plants and various fuel storage facilities

Bob’s Beach Berthing Structure

Civil and near-shore marine construction works including submerging a barge at Bob’s Beach to provide a new material offloading point as part of the WAPET Landing works included:

Seabed Pad – levelling of barge landing area and placement of secondary armour up to the barge
Earthen Ramp – construction of a roadway and earthen ramp
Road–filled, graded and trimmed road alignment, cement stabilised for a depth of 150mm

General Services Contract

All management, supervision, labour, materials and consumables management, logistics, construction and specialised plant and equipment, to maintain and or upgrade infrastructure:

GBB mechanical ramp and diesel offload pipeline
Triangle borrow pit restoration
LNG construction site drainage modification
Upgrading facilities and extending and modifying buildings including electrical upgrades
Maintenance of unsealed roads, culverts at road crossings and road improvements
Site preparation services

Airport Upgrade

Upgrade the existing airport to meet CASA standards including:

Mobilisation of a 160TPH mobile asphalt plant including paving, spraying, profiling and haulage equipment
Production and placement of 28,000t of asphalt
Excavation and construction 2 No 20m x 20m concrete aprons
Upgrade drainage works to the apron area

Camp Demolition, Earthworks & Civils

Demolition of over 700 modular temporary building units including construction facilities and the removal of all underground services including:

Demobilisation, demolition and relocation of accommodation facilities and temporary construction facilities
Disconnection, removal and termination of rerouting of electrical communications, water and sewer services
Design and construction of road and drainage infrastructure
Decommissioning and isolation of client-owned temporary construction facilities, accommodation units and ancillary structures
Degassing of 2000 air conditioning units, water chillers, ice machines and drinking fountains
Operation and maintenance of a concrete batching plant and large volume concrete works

Civil and Earthworks Services

Provision of all civil, electrical, mechanical services to deliver the following general maintenance works:

Road and underground drainage maintenance and repair
Airport maintenance
Yard maintenance including the RSA, laydown yards and MOF hardstands and laydown
Batch plant operation to provide pre-cast and in-situ foundations
Accommodation village electrical maintenance
Fire and potable water maintenance
Reliable Instrument Air Generator works (RIAG)
Construct Bioremediation Pond