We have been sequentially measuring and evaluating externally and internally
exposed dose of employees engaged in emergency work in Fukushima Daiichi
Nuclear Power Station.
On June 13, 2011, we reported to Ministry of Health, Labor and Welfare
(MHLW) regarding the evaluation results of externally exposed dose of
employees engaged in emergency work before the end of March 2011 and the
comprehensive primary evaluation results *1 of internally exposed dose of
those employees who were measured with whole-body counters (WBC) before the
end of May out of the aforementioned ones.
(Previously announced on June 13, 2011)
In addition, on June 20, 2011, we put together and reported to MHLW the
primary evaluation results of internally exposed dose of the same employees
and those who have underwent WBC examinations before June 18.
(Previously announced on June 20, 2011)
Then on June 30, we reported to MHLW the evaluation results of externally
exposed dose of employees newly engaged in emergency work in April 2011 as
well as those of internally exposed dose of the same workers and those who
underwent WBC examinations before June 25.
(Previously announced on June 30, 2011)
Today, we announce that we have put together and reported to MHLW the
following evaluations of exposed dosed of employees engaged in emergency
work in Fukushima Daiichi Nuclear Power Station as shown in the exhibit.
1.Confirmed results of internally exposed dose of employees whose results
of primary evaluations regarding internally exposed dose exceed 100 mSv
2.Progress situation of specifying who should be measured regarding
internally exposed dose
3.Evaluation results of externally exposed dose and primary evaluation
results of internally exposed dose of employees newly engaged in emergency
work in April 2011
4.Evaluation results of externally exposed dose of employees who started
being engaged in emergency work in May 2011
5.Organizations to implement preparations for appropriate radiation work
notices, internal reviews and prompt submissions.
We will continue measuring and evaluating externally and internally exposed
dose and make efforts to adequately prepare for radiation work notices,
internally review them and promptly submit them.
End
*1 Primary evaluation regarding internally exposed dose
Provisional evaluation on the assumption that a value of internally exposed
dose will be the maximum if each employee takes all of radioactive materials
in a day of the start of his work (on March 12 if he has been working from
the beginning) in case adequate surveys are not conducted.
Exhibit: Evaluation status of exposed dose of employees engaged in emergency
work in Fukushima Daiichi Nuclear Power Station(PDF 83.7KB)