[sionnsar]

If I remember the details correctly, they had to vent the vessel to relieve pressure. That released hydrogen, which cause the explosion that wrecked the outer concrete containment. They are (planning to?) pump in seawater perhaps laced with boron(?) to cool the core.

I believe some radioactive material has been released -- whether more or less than TMI I do not know. But this is not likely to be anything like Chernobyl -- VERY different designs, I gather.

[NicknamedBob]

"They are (planning to?) pump in seawater perhaps laced with boron(?) to cool the core."

Boric acid with the seawater is an effective reaction inhibitor.

It's ironic too. Boron may be an efficient fuel for fusion reactors once we learn how to get the temperature high enough. We'll be combining one proton and one boron eleven ion to produce three (count them!) ions of helium! Those are going to be some great power generators!

[Dead Corpse]

3rd Level containment is the biggest difference to Chernobyl. I live about 15 miles from the Monticello plant which is a sister reactor to this one in Japan.

One of the biggest concerns I've been able to glean from the dross of media "reporting" is that one of the rods failed to retract causing it to partially melt in place. That is going to be a mess to clean up...