That's why I wrote "get contaminated not only by neutron activation but also with Uranium, Cesium, Iodine". I doubt that in the current situation there would be the necessary facilities to filter out those elements, but I would be interested in having more information on this.
Well, the OP says there are such facilities. (The contaminated water can be kept in the containment till the facilities have recovered from the earthquake if they are currently down.)
As far as the steam is concerned this puts my mind at a rest.
Quote from http://allthingsnuclear.org/post/3792741638/containment-at-f...
"In this situation, the vented air would be routed through a high-efficiency particulate air (HEPA) filter, charcoal beds, and another HEPA filter to remove as much radioactivity as possible before being released from a very tall stack to dilute the flow as much as possible."
When you say the contaminated water can be kept in the containment, does that mean that they are basically flooding the containment with seawater? My impression was that the there is still a need for cooling (i.e. cool water in, hot water out) in case of a total melt down.
