My take is that it is astounding that the control room folks at Fukishima have contained whatever has been going on this long (backup fuel tanks that went out to sea on the heels of a 9.0 quake+tsunami).
My 2-bits is that Chernobyl happened fast.
If anything at Fukishima was going to "blow" catastrophically, I'd say the odds are that it would have happened already. The longer we wait, the less likely 'massive radiation' seems, to me, unless someone makes the case that the control rods have not stopped the reaction...
Of course, there have been 400 aftershocks, with the latest above 6.0, so...
