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Tagged : meltdown-danger


Sunday update: Union of Concerned Scientists on nuclear crisis in Japan

March 14th, 2011

(The following is an excerpt of a report by Ed Lyman posted Sunday evening EDT.)

The nuclear crisis in Japan took a turn for the worse as serious problems developed at a second reactor at the Fukushima Dai-Ichi nuclear facility. Earlier concerns were focused on reactor Unit 1, but now the situation at Unit 3 is becoming serious.

Officials from Tokyo Electric reported that after multiple cooling system failures, the water level in the Unit 3 reactor vessel dropped 3 meters (nearly 10 feet), uncovering approximately 90 percent of each of the fuel rods in the core. Authorities were able to inject cooling water with a fire pump after reducing the containment pressure by a controlled venting of radioactive gas. As with Unit 1, they began pumping seawater into Unit 3. Seawater is highly corrosive and probably precludes any future use of the reactor, even if a crisis is averted.


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