Thanks for posting the video link. Looks like steam, but definately an explosion. Interesting that someone would type that it’s a “nuclear plant because the smoke is gray”. That may be the dumbest thing anybody’s written on Youtube of late.
Anyway, I think it’s a steam explosion of some sort, but as to the root cause or where it happened in the system, can’t tell from that video.
You know, yesterday, I kept running across youtube videos or clips from japan, loaded even before the tsunami, reporting explosions at the nuclear plants.
There were also posts correcting them at the time when they were looking at oil refinery fires and calling them the nuclear plants.
I know Japan has its own breed of terrorists and revolutionaries. I wonder how security has been maintained in the area during this mayhem. This environment probably provides ripe conditions for revolutionaries to spark even more calamity.
Situation reads as though its bad enough without further conjecture, but I offer this to encourage discernment of the reports in an age of information warfare and multiple governments having been toppled or attacked around the mid-East.