This leak is from a different part of the plant than the leak that forced the plant to be closed down for a month earlier this year.
The leak was being repaired inside a containment building at the plant in Covert Township, southwest of Grand Rapids.
Palisades Nuclear Plant spokesman Mark Savage said that no radioactive materials were released.
"Palisades is taking this conservative measure at this time because of our unrelenting commitment and focus on nuclear safety," Savage added.
"Palisades will be returned to service when repairs are completed."
The plant has been designated by the Nuclear Regulatory Commission as one of the country’s four worst-performing nuclear plants.
US-based Entergy Corp, which owns the plant, said it’s working to improve the plant’s safety culture.
