[Fido969]

If they are pumping sea water *into* the system to cool it - where is the water going off to? Are they pumping it directly into the core, or is it going through a heat exchange system? If the latter, is there radiation exchange in the heat exchange system? (I know there is not SUPPOSED to be.)

[BuckeyeTexan]

Here’s a good picture of what’s happening: http://bravenewclimate.com/2011/03/15/fukushima-15-march-summary/