ShepherdsDog ShepherdsDog:
NHK is reporting that a vapour can be seen rising above no.3 reactor and TEPCO isn't sure what it is, or what is causing it..

The suppression pool seems to be compromised, it's a pool of water
at the bottom of the reactor.
Radiation level of 8000+ micro sievert per hour, about 3 years worth in one shot.
2 things they are not talking about:
the spent fuel that is also being kept inside the primary vessels.
reactor 3 is MOX, using a mix of plutonium and uranium.