Monitoring information
of environmental radioactivity level
NSR:Nuclear Regulation Authority


October 24,2014
Estimated and measured 1m height environmental radioactivity level at monitoring posts in 47 prefectures (Monitoring Date: Oct 23, 2014)
October 24,2014
Readings of Accumulated Dose at Reading point out of 20 km Zone of TEPCO Fukushima Dai-ichi NPP (measured by glass badge dosimeter) (Monitoring Date: Sep 1, 2014 - Oct 2, 2014)
October 24,2014
Distribution map of seawater radioactivity around coast of Ibaraki Prefecture(Sampling Date: Sep 13, 2014)
October 24,2014
Distribution map of radioactivity concentration in the seawater around coast of Miyagi Prefecture (Sampling Date: Sep 2, 2014)
October 24,2014
Seawater radioactivity near TEPCO Fukushima Dai-ichi NPP (Sampling Date: Oct 22, 2014)


Recent sea area monitoring results

Monitoring plans

Monitoring results

Air dose rate

Integreted dose

Water Environment

Readings of dust, soil and environmental sampling

Database / Distribution map

Related Information


Radiation Monitoring Division
Tel : 03-5114-2125