Monitoring information
of environmental radioactivity level
NSR:Nuclear Regulation Authority


February 27,2015
Readings at Monitoring Post out of 20 Km Zone of Fukushima Dai-ichi NPP
February 27,2015
Estimated and measured 1m height environmental radioactivity level at monitoring posts in 47 prefectures (Monitoring Date: Feb 26, 2015)
February 27,2015
Readings of dust samplings in 20km Zone of TEPCO Fukushima Dai-ichi NPP (Sampling date: Feb 18~19,2015)
February 27,2015
Readings of environmental radioactivity level by prefecture (Fallout)(Jan, 2015)
February 27,2015
Distribution map of seawater radioactivity around TEPCO Fukushima Dai-ichi NPP-H-3, total beta-(Sampling Date: Jan 20, 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