Fukushima Daiichi NPS Reactor 4 in July 2012

This aerial view shows the damaged No. 4 reactor building at Tokyo Electric Power Co.'s Fukushima Dai-ichi nuclear power plant in Okuma town, Fukushima prefecture, northeastern Japan, Wednesday, July 18, 2012. A giant crane removed two rods packed with nuclear fuel from the reactor building on Wednesday, the beginning of a delicate and long process to deal with a remaining risk of more radiation escaping from the disaster-struck plant. AP

Tokyo Electric Power Co.'s (TEPCO) tsunami-crippled Fukushima Daiichi nuclear power plant reactor building number 4 is seen in Fukushima prefecture, in this aerial view photo taken by Kyodo July 18, 2012. TEPCO started trial operations for removing unused nuclear fuel assemblies stored in the spent fuel pool of the crisis-hit plant's No. 4 reactor unit on Wednesday marking the first time of the removal of the spent nuclear fuel rods since last year's disaster, local media reported. Kyodo

Tokyo Electric Power Co. (TEPCO)'s tsunami-crippled Fukushima Daiichi nuclear power plant's reactor building number 4 is seen in Fukushima prefecture, in this aerial view photo taken by Kyodo July 5, 2012. Japan's Fukushima nuclear crisis was a preventable disaster resulting from "collusion" among the government, regulators and the plant operator, an expert panel said on Thursday, wrapping up an inquiry into the worst nuclear accident in 25 years. The panel also criticised the response of plant operator Tokyo Electric Power Co, regulators and then Prime Minister Naoto Kan, who quit last year after criticism of his handling of a natural disaster that developed into a man-made crisis. Kyodo

The reactor cover at Fukushima's No. 4 reactor building is seen at the Tokyo Electric Power Co's (TEPCO) tsunami-crippled Fukushima Daiichi nuclear power plant in Fukushima prefecture May 26, 2012. Japanese officials said on Saturday the unprecedented effort to remove spent fuel rods from the reactor was on track despite lingering concerns about the structure's vulnerability to another earthquake. Reuters