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One of the four generators at Callide Power Station has suffered 'major' damage in Tuesday's explosion and fire and will be offline indefinitely, its operators have revealed.
CS Energy boss Andrew Bills says critical staff were allowed back into the power plant overnight to inspect damage.
"Based on an initial inspection overnight, Unit C4 has experienced major damage and failure of the turbine," he said.
"It will take some time to fully understand the cause of the failure and the steps that will need to take to repair the unit.
"The unit that has been damaged is jointly owned by CS Energy and Intergen and we will be working closely with our joint venture partner as part of this process.