Abstract

The assessment of creep-fatigue damage in structural components has recently become important due to economically forced needs to extend the remaining life of power plants that have been in operation for 30 – 40 years. The extension methodology determining the reliability and safety of power stations is usually based on a combination of the plant operating history data with in-service/in-situ material damage evaluation. This paper describes an application of the accumulated operational damage assessment methodology for the example of a high pressure steam turbine casing analysis.

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