Link
For perspective, a radiation level of about 0.19 MicroSieverts/hour is roughly equivalent to the maximum allowable radiation exposure level (1 MilliSievert/year or 100 Millirems/year (note 0.19 actually comes out to 166 mrem/year) for the United States. Until , that was also the allowable exposure level in Japan.
Update
presentation from Tokyo Electric Power on how high-level radioactive waste is stored at Fukushima (including pool inventory and dry cask info).
Update
At least one reactor at the complex, Fukushima I-3, began using MOX (mixed plutonium-uranium) fuel in
Update
On , the same Fukushima I-2 reactor experienced a loss-of-power accident. According to Citizens’ Nuclear Information Center, “On June 17, Tokyo Electric Power Company’s Fukushima I-2 (BWR, 784MW) scrammed due to a problem with the generator. Power was lost for a time, because the switchover to the offsite power supply was unsuccessful. As a result, the feedwater pump stopped and the water level in the reactor core fell about 2 meters. The emergency diesel generator started up just in time, so the Emergency Core Cooling System was not activated. The water level was restored by an alternative pump in the core isolation cooling system.”
Update
Link