Friday, May 13, 2011
#Fukushima I Nuke Plant: Radiation on 2nd Floor of Reactor 1 Exceeded 1,000 Millisieverts/Hour
Or more than 1 sievert/hour.
When 7 TEPCO employees and 2 NISA employees entered the Reactor 1 reactor building on early hours of May 9 (JST), the act that released mere 500 million becquerels of radioactive iodine and cesium into the atmosphere, they measured the radiation level on the ground floor which was 600 to 700 millisieverts/hour at the highest spot.
Then on May 10, someone went upstairs to the 2nd floor for the first time since March 11, and measured the radiation there. It was so high that the Geiger counter couldn't accurately measure.
And TEPCO thinks the totally melted blob of fuel rods (uranium, plutonium) + cladding (zirconium alloy) + control rods (boron, cadmium, silver, indium) + stainless steel pipes + whatever was inside the Reactor Pressure Vessel = "corium" is being safely cooled at the bottom of the RPV.