An alert was declared at Farley Nuclear Plant after ammonia was detected coming from a valve in the plant’s auxiliary building.
There was no radioactive release during the leak and no employees were injured, Alabama Power reported. Unit 1 was currently in a regularly-scheduled refueling outage, while Unit 2 continued to operate normally.
The alert was the second-least serious of the categories of emergencies defined by the Nuclear Regulatory Commission.
The alert was cancelled less than six hours later.