As part of emergency precautions being taken at Fukushima Daiichi Nuclear
Power Station, we have been evaluating the internal exposure dose of each
worker.
Regarding the two TEPCO male employees, we were informed that levels of
internal radioactivity (iodine 131) present in their thyroids is higher
than normal according to the Japan Atomic Energy Agency (Independent
Administrative Corporation), which is cooperating with us in the
conducting of the examinations and evaluations.
The two TEPCO employees are scheduled to undergo a medical examination to
be administered by the National Institute of Radiological Sciences
(Independent Administrative Corporation). Continuous detailed monitoring
of their internal exposure conditions will be conducted to determine their
levels of exposure dosage*.
*1 Determining exposure dosage levels
This work is comprised of evaluating and adding the exposure dosage during
both working hours and the time spent residing in the Anti-earthquake
Building in addition to internal exposure levels of the committed dose
(exposure spanning a 50-year period from this juncture).