Isn't one of those reactors that one that is running some "hybrid" type of fuel - they called is "mox" and its radiation is much much higher than the regulars?
I'm wondering if the second explosion (or maybe even the first) breeched containment vessels - meaning even though they are pumping in the sea water, it can't be contained (or caught and kept - like in a bowl or pot) - so the water just runs right back off which would expose those fuel rods. Kinda like trying to fill a bucket that has a big ole hole in the bottom of it - KWIM?
Here's what I found about MOX, some good info, and some common sense:
http://sherriequestioningall.blogspot.com/2011/03/japan-exploded-nuclear-plant-uses-mox.htmlThis is truly Sickening! In fact it really makes you wonder WHY they did not have 100 safety precautions in place! How dare they use MOX in a nuclear power plant in a place that is known for the biggest quakes and tsunamis! Besides Japan putting their plants right along side the ocean!