One reliable news outlet in Japan is running a story containing an admission by Japan's Nuclear & Industrial Safety Agency that there has been a partial core melt at Fukushima Daiichi 1. This may be considered as fuel element failure and some possible melt, in the absence of clear translation and accurate description.
After the hydrogen burn that partially destroyed the reactor building (apparently now possibly limited to the refueling floor enclosure) the evactuation area for residents and businesses was expanded to 20 kilometers (about 12.5 miles) and now includes some 170,000 persons.
The IAEA is calling this event a Class 4 Accident - the consequences appear localized at the moment.
We will have our second "FACTS" update in the ongoing coverage of the Fukushima event shortly.
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