Monitoring information
of environmental radioactivity level
NSR:Nuclear Regulation Authority


January 23,2015
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: Dec 1, 2014 - Jan 5, 2015)
January 23,2015
Distribution map of seawater radioactivity around TEPCO Fukushima Dai-ichi NPP-H-3, total alpha, total beta, Sr-(Sampling Date: Dec 2, 4, 6, 2014)
January 23,2015
Distribution map of radioactivity in the marine soil around TEPCO Fukushima Dai-ichi NPP (Converted as dry soil)(Sampling Date: Dec 2 - Dec 25, 2014)
January 23,2015
Seawater radioactivity near TEPCO Fukushima Dai-ichi NPP (Sampling Date: Jan 20, 21, 2015)
January 23,2015
Estimated and measured 1m height environmental radioactivity level at monitoring posts in 47 prefectures (Monitoring Date: Jan 22, 2015)


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