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» Ari dose level in 80-kilometer area surrounding Fukushima No.1 dropped by 47% since Nov. 2011

Air dose levels in an 80-kilometer area surrounding the crippled Fukushima No. 1 nuclear power plant have dropped by 47 percent since November 2011.

The latest readings for September were announced on Dec. 25 by the Nuclear Regulation Authority, the government’s nuclear watchdog.

NRA officials attributed the drop primarily to natural decay. They said rainwater has also washed some of the radioactive materials into the ocean and some into the surrounding soil.
<Nuclear Regulation Authority>
Monitoring air dose rates from a series of aircraft surveys 30 months after the
Fukushima Daiichi NPS accident

<Media Report>
Air dose rates halved 30 months after Fukushima accident (Asahi Newspaper)


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