someone asked on one of the threads about the meltdown
TEPCO says fuel pellets fell into the RPV and melted
http://www.tepco.co.jp/en/press/corp-com/release/betu11_e/images/110515e10.pdf
According to TEPCO...
3 hours after the scram the water is at the top of the fuel.
in another 1 1/2 it is as the bottom of the fuel
and 16 hours after SCRAM full meltdown.
And boy do I remember so many people on these threads on the internet saying they didn’t think that happened.
Now let’s see what they show for Reactor 2 and 3...if they ever release it
And to put this in perspective
http://www.cavendishscience.org/bks/nuc/quests.htm
“In an accident that has gone out of control, there is without any doubt enough heat generated to melt the steel bottom of the reactor vessel, causing an approximate 200 tons of molten uranium and radioactive fission products (above the melting temperature of uranium oxide, 2500o, or at least that of uranium, 1130o) to pour out onto the concrete floor of the containment building in a puddle with an average depth of about ¼ inch. “