The Ginna Nuclear Power Plant began commercial operation in 1970. Two power uprates have been completed during the 40+ years of operation and the original main generator continues to provide highly reliable operation with no significant changes to the original design. The life cycle management plan for the generator identified several age-related issues which could challenge reliable operation of the unit if left unattended. This paper outlines the approach taken to assess and quantify specific component degradation, the impact on generator reliability and the counter measures (planned and implemented) to ensure continued reliable operation until a generator replacement is performed in a future refueling outage.

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