Case study Optimisation of Vale/Sumitomo’s Isaac Plains CHPP When Ausenco was awarded an Operations and Maintenance contract at the Isaac Plains Coal Handling and Preparation Plant (CHPP) in 2008, the plant was partly commissioned and unable to meet name plate capacity . Six months later it was a different story. Not only had the plant reached its name plate capacity, its yield had increased by a further 2% thanks to some clever process engineering and debottlenecking work. Five years on, and we are still finding ways to optimise the operations and maintenance of the plant leading to better availability and lower overall operating costs. Our contract at Isaac Plains was renewed in October 2012 for an extension period of 27 months, with an option to extend for an additional

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