http://www.iaea.org/newscenter/news/tsunamiupdate01.html
positiv: "Japan Earthquake Update (15 March 2011, 03:35 CET)
Japanese authorities yesterday reported to the IAEA at 21:05 CET that the reactors Units 1, 2 and 3 of the Fukushima Daini nuclear power plant are in cold shutdown status. This means that the pressure of the water coolant is at around atmospheric level and the temperature is below 100 degrees Celsius. Under these conditions, the reactors are considered to be safely under control."
negativ: "Japanese authorities also today informed the IAEA at 04:50 CET that the spent fuel storage pond at the Unit 4 reactor of the Fukushima Daiichi nuclear power plant is on fire and radioactivity is being released directly into the atmosphere.
Dose rates of up to 400 millisievert per hour have been reported at the site. The Japanese authorities are saying that there is a possibility that the fire was caused by a hydrogen explosion.
The IAEA is seeking further information on these developments."
Anmerkung: die Meldungen sind natürlich abhängig vom Informationsfluss der aus Japan kommt, von daher leider auch nicht 100%ig sicher (was jetzt kein Negativ-Statement sein soll! Ich hab persönlich nen heiden Respekt vor der Kultur der Japaner)