Japanese Authorities reported that the blast which occurred at the badly crippled Fukushima #3  damaged 4 out of 5 of the cooling pumps!  Blast damage has become an increasingly important part of this story.  These facilities in general are all about containment.  The buildup of explosive gas in this hostile environment has been hampering efforts to cool the reactors.

The world watches as a slow motion train wreck plays out before our eyes.  Behind the scenes Japanese officials say its likely that there has been melting at the core of the 3 reactor,s but that the containment vessel,s  are secure.  If nothing else it is a testament to the GE Mark 1 BWR containment vessel design.  And to the bravery of any man or woman working in such dangerous conditions!