FILE In this photo taken on Thursday, June 12, 2008, a power-generating unit at the Zaporozhiya nuclear power plant is seen in the city of Enerhodar, in southern Ukraine. One unit of Ukraine's Zaporozhiya nuclear power plant, the largest in Europe, has been taken offline because of generator problems. It is the second time this month that a unit at the plant has been taken out of service. The earlier unit, different from the one affected Sunday, was restored to service after several days. (AP Photo/Olexander Prokopenko, file)