heat output of SCRAMed nuclear reactor

[Welsh cake]

That's the first reactor to blow up in Japan this last week. It was a GE MK 1 boiling water reactor.

You mean Daiichi. ^^ Hang on though, I thought it was a BWR-4/3 reactor? Are we both wrong?

If they are cooling it by directly pumping seawater into the reactor vessel, then that could only go on for so long.

Correct. It shows how quickly the situation is getting increasingly desperate. From what I've heard nuclear scientists are most concerned about the spent fuel getting too hot, not the reactors, if they can’t keep them cool that could result in uncontrolled highly radioactive emissions making the Chernobyl accident look like an anomaly by comparison, in the worse case scenario, there is always that chance that the stored Plutonium could go critical.