The project is located in Dampier, in the coastal Pilbara Region of Western Australia. The site consists of a power station partially deconstructed over two failed stages in 2012 and 2014 by other demolition contractors. Liberty Industrial were engaged by Rio Tinto to complete the third and final stage of demolition of the remaining facilities which included: the Turbine Hall, Seawater Intake Infrastructure, Water Storage Tanks, Cooling Water Outlet, ALCO Generator, associated piping, and all the remaining elements within the battery limits. The site spanned an area of approximately 50,000 m2.
Prior commencement of demolition works a hazardous materials gap audit was undertaken to confirm if any asbestos contained materials remained present on site following stages one and two. The report confirmed an extensive amount of asbestos materials both friable and non-friable were still in-situ which Liberty Industrial proceeded to safely remove.
The Turbine Hall was demolished using a cut and pull technique thus induce collapsing the structure to a safe working height where machines mechanically processed the structure once safely brought to ground. Extensive engineering design was incorporated into this process. Prior to that, the internal infrastructure such as concrete plinths and generators were removed. This technique of demolition was carefully planned in terms of alignment to suitable weather conditions.
The remaining structures on site such as the Water Tanks, Cooling Water Outlet, ALCO Generator, Piping etc. were mechanically demolished with specialised hydraulic demolition excavators equipped with attachments such as metal shears, concrete crackers, hammers, rotating grabs and pulverisers. These machines were mobilised from across the Australian continent to service the project. Heavy structural steel elements were down sized via personnel with oxy cutting equipment. All steel materials were transported to a scrap handling area where they were processed and down sized for recycling.
The civil scope of works consisted of demolishing, processing and pulverising all concrete slabs, hardstands, footings, piles, and mixed masonry materials in preparation for backfilling of the Sea Water Intake Pond.