The Tennessee Valley Authority filed notice with the Nuclear Regulatory Commission after a small fire burned in a turbine room Saturday.
Operators were notified of a fire near non-safety-related equipment in Unit Three.
The fire was put out by the on-site brigade. No off-site assistance was requested.
TVA's filing with the NRC said Unit 3 is currently stable but is offline due to a scheduled maintenance outage. Â
Units 1 and 2 were not impacted by Saturday's fire and continue to operate at full power.
TVA released a statement which read all plant systems operated as designed and there were no injuries or impacts to the health and safety of the public or plant personnel. Â
TVA said the filing of a Notice of Unusual Event is the least severe of four NRC Emergency classifications.