Recent measurement shows the level of radiation is getting very high at Fukushima Daiichi Nuclear Power Plants.
According to Tepco’s report on 27/11/12, an atmospheric dose on the first floor of Reactor 3 building is getting very high - One location showed 4.78Sv/h (=4780mSv/h). The robot was sent to investigate the damaged pipe for contaminated air from the turbine building.
On 11/7/12 it was 360mSv/h when the survey robot stopped working when it was sent to the basement floor of reactor 3 building in order to record the sound of the area where they thought water had been leaking. It was 1.3Sv/h a year ago.
(Link) For more details: http://fukushima-diary.com/2012/11/reactor3-got-worse-than-last-year-5-svh-on-the-first-floor-of-reactor3-3-6-times-worse-than-last-year/
1mSv per year is a legal limit of ionized radiation dose in Japan. This regulation was set up to meet compromising level after the amount of ionized radiations that were released into the air by nuclear bomb experiments. Therefore 20mSv per year is very high for our everyday life, especially vulnerable children. People in Fukushima have been forced to live in such high radiation area. Therefore it’s well beyond the imaginable level how dangerous it is for Tepco workers to be on the site even if they wear special clothes to protect them.