Watch the video here.
– High radioactivity level at No. 2 reactor (NHK, May 30, 2011):
The operator of the crippled Fukushima Daiichi nuclear plant says the radioactivity level and humidity are high in the Number 2 reactor building, which will make internal operations hard.
Workers entered the building last week to measure humidity and to gauge levels of radioactive substances in the atmosphere.
The results show the Number 2 reactor building’s radioactive cesium level is twice as high as the cesium level in air not purified in the Number 1 reactor building. Steam is filling the Number 2 building, and humidity has reached 99.9 percent.
The high humidity means an air purification unit cannot be used to lower the level of radioactivity.
In order to cool the spent fuel storage pool that’s causing the steam, TEPCO will put in place a heat exchanger on Tuesday to serve as a cooling system.
But TEPCO does not know how effective the system will be, so it will be a while before it can install the purifier to lower the radioactivity level.