Pinjarra Alumina Refinery Cogeneration

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Two new 140 MW gas-fired cogeneration units in Western Australia were the latest projects delivered through GHD’s long relationship with leading energy infrastructure company Alinta Pty Ltd.

The cogeneration plants deliver more than 75 percent energy efficiency, compared with 25-50 percent for other power plants operating in Western Australia. The recently completed cogeneration units are located within Alcoa’s Pinjarra Alumina refinery in the South West of Western Australia. The combined output of the units is 280 MW of power and up to 840tph of steam.

Alinta engaged GHD to undertake concept design for the cogeneration facility, prepare a feasibility study, develop plant specifications, perform bid evaluation conduct contract negotiation and develop a Long Term Service Agreement specification. GHD also reviewed the facility design, construction, commissioning and testing. For seamless integration of the new unit, GHD undertook design, procurement and construction management of the interconnection with the existing facilities.

The completion of the units represents the culmination of many years of effort by Alinta, Alcoa and GHD. In fact, GHD undertook initial concept studies for Alcoa more than ten years ago. This initial study formed the basis for the eventual realisation of the project.

GHD’s strong relationship with Alinta continued with GHD providing Owner’s Engineer and detail design services for the 200MW combined cycle Tamar Valley Power Station near Launceston in Tasmania. The project, originally conceived by Alinta and due for completion in August 2009, is now owned by Aurora Energy.

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Our Plant Engineering team incorporates engineers experienced in the design and maintenance of industrial processing plants.

Our primary customer groups are those who are in the business of processing, refining, handling, manufacturing or treating petrochemicals, gases, water, waste, bulk materials, minerals, food products or manufactured products for use in other processes or for sale to others.

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