January 2000

Maintenance and Retrofitting

Overlooked ways to cut gas turbine refurbishment costs

Use these techniques to get more for your money

Curtis, R. L., IGT Egineering, Sermatech Technical Services

A variety of simple improvements are paying off in several ways for operators of industrial gas turbines. The techniques are speeding turnarounds and increasing the yield of salvageable components, thereby cutting the cost of expensive replacement blade sets, vanes and transition pieces. When the refurbished unit goes back online, new ultra-smooth coating techniques considerably improve efficiency. Used together, the refurbishment advances outlined in this article are reducing turbomachinery lifetime ownership costs by a substantial margin. The service developments that have made the most difference are more dimensional than metallurgical joining, yet they haven't received the attentio

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