The Port Augusta power station was constructed in 1963, with additional capacity added in 1985. Though the station is no longer producing, the grid would still be in place to service towns. So the grid is probably aging, and designed to a standard that may no longer be applicable. Bass Strait oil rigs were designed to meet a one in something years event, but turned out the events were of a far more regular occurrence than expected. Personnel had to be evacuated when the weather reached a certain limit as a safety precaution, prior to the platforms undergoing structural strengthening.