mg-

There are large gaps in this narrative, some because of the reports we receive, some because certain options weren't even considered in the early stages of this continuing disaster. We won't know what exactly happened till years from now, if then.

Gnu-

Glad you read through the Union of Concerned Scientists update (above link). That is one of the conclusions. One wonders if there was any attempt by the Japanese to address this evident problem, assuming they were even informed.

The reactor units at Fukushima-2 nuclear complex are newer models and maybe that's why they were able to bring them back to cold shutdown without a hydrogen explosion under similar conditions. Making sense out of this evolving situation is a therapeutic exercises I indulge in; makes me think I have control over chaos. Whatever!!!

Charley Noble