Environmental Safety

Environmental radiation at the site boundary of Mitsubishi Nuclear Fuel
(MNF) plant at Tokai is continuously observed.


Please click the above photograph and you will see the live radiation rate.
(The latest measurement in ten minutes average is displayed.)
  • Environmental radiation is continuously measured in mGy/hby g ray radiation
    dose rate at the boundary of the company compound.
  • If the dose rate exceeds the set value, the monitor gives out alarm.
    Usual values of the environmental dose rate is about 0.03mGy/h to 0.10mGy/h.
    In case of rain, the rate goes up due to natural radiation.