Reference Material: Radiation Exposure Data FY2016
The Secretariat of the Nuclear Regulation Authority released the FY 2016 Report on radiation management in nuclear facilities on 4 October 2017 (www.nsr.go.jp/data/000203487.pdf). The following data was compiled from the section on “Management of radioactive waste and exposure of workers at nuclear reactor facilities for power generation, research and development facilities, fabrication facilities, reprocessing facilities, waste disposal facilities and waste management facilities.”
In the 17 nuclear plants other than Fukushima Daiichi, a total of approximately 46,900 workers received a collective dose of 7.60 Person Sv, an average of 0.2 mSv per person. Compared to this, 15,800 workers at Fukushima Daiichi received a collective dose of 45.90 person Sv, an average of 2.9 mSv per person, a much higher exposure to radiation. The Sendai nuclear plant, which was restarted in 2015, had regular inspection shut-downs at Unit 1 from October to December 2016 and at Unit 2 from December 2016 to February 2017. In 2015 there were no exposure doses of over 5 mSv, but probably because of the inspections, exposure doses were higher in 2016.
In the 17 nuclear plants other than Fukushima Daiichi, a total of approximately 46,900 workers received a collective dose of 7.60 Person Sv, an average of 0.2 mSv per person. Compared to this, 15,800 workers at Fukushima Daiichi received a collective dose of 45.90 person Sv, an average of 2.9 mSv per person, a much higher exposure to radiation. The Sendai nuclear plant, which was restarted in 2015, had regular inspection shut-downs at Unit 1 from October to December 2016 and at Unit 2 from December 2016 to February 2017. In 2015 there were no exposure doses of over 5 mSv, but probably because of the inspections, exposure doses were higher in 2016.
<Ryohei Kataoka, CNIC>
