Copper Deposits On Turbine Blades: A Copper-Plated Thief 

Dave Daniels and John Latcovich, Hartford Steam Boiler

Once viewed as an isolated problem, the number of utilities reporting copper deposits on turbine blades is growing rapidly. It’s not completely understood why the deposits accumulate, but the consequences are clear — the contamination can rob generating units of significant amounts of capacity, may lead to costly repairs and can shut down a unit for several weeks. How can operators prevent copper deposits? Why are some units affected and not others? What can be done to correct the problem once it has occurred? We don’t yet have all the answers, but copper deposits develop over time and there are a number of steps a utility can take to prevent the problem. There is also a new method to remove the copper from turbines without replacing expensive components or idling power generators for lengthy cleaning. »more

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