Palisades nuclear power plant in Covert Township, Michigan was removed from service on Aug. 12, 2012 to repair a small cooling water leak. No radioactive materials were released.

The leak is being repaired inside a containment building and is considered a conservative measure for nuclear safety. The plant needs to be shutdown so that radiation levels drop inside the containment building allowing workers to safely repair the leak. When repairs are completed the plant will be returned to service.

Palisades voluntarily shutdownon June 12 due to a one year old leak in a water storage tank. That leak was apparently dumping gallons of water into the reactor’s control room. The leak was not released into the environment and posed no threat to the public.

http://www.examiner.com/article/palisades-nuclear-power-plant-remov...