Yeah now go find the information about the EXTERNAL leak.....In the water...
My understanding is that the cooling water is evaporating from the heat and building up pressure inside the containment structure.
I've seen two conflicting reports. One said there was successful release of pressure and one said that the effort to relieve the pressure was called off.
[2:19 a.m. ET, 4:19 p.m. Tokyo] A small amount of radioactive Cesium has escaped into the air surrounding a nuclear plant in northeastern Japan’s Fukushima prefecture, Japan’s Nuclear and Industrial Agency said.
The agency said there was a strong possibility that this was caused by the melting of a fuel rod, adding that plant engineers were continuing to cool the fuel rods by pumping water around the rods.