power – strom und macht

Melted Fuel outside the Reactors

Susanne Gerber


TEPCO: Tuesday radiation exceeded 10 sieverts at two locations near a duct connected to a ventilation stack between two reactor units at the Fukushima Dai-ichi plant. To put the 10 sieverts into context, it is actually a lethal dose of radiation. It means you’re directly exposed to fuel rods in the reactors or the spent fuel ponds very closely and while it’s possible to get to those levels it means there is very little shielding going on there.  Melted fuel in the No. 1 reactor might have collected inside the duct after leaking from the containment vessel. Gamma camera images which show radiation doses by color indicated red at the bottom of the main exhaust pipe between the two reactor buildings, which means that radiation doses top 10 sieverts per hour.


Filed under: Fukushima, Meltdown, Radiation

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