Press Releases 2015

TEPCO has been evaluating the exposure dose of workers at the Fukushima Daiichi Nuclear Power Station under two types, internal and external radiation exposure, and has submitted the evaluation results to the Ministry of Health, Labor and Welfare by the submission deadlines. (Previously announced)
TEPCO submitted to the Ministry of Health, Labor and Welfare today a report on the evaluation of the exposure doses which had been collected until the end of August 2015. Here is part of the report: 314 workers joined the workforce at the Fukushima Daiichi Nuclear Power Station in August 2015. The maximum value of the external exposure doses among the workers who are engaged in the work at the power station in August 2015 was 10.65mSv, and regarding the internal exposure doses, no significant value was measured. The exposure doses of the "workers expected to work under especially high radiation*" are reported again separately from all the other exposure data.
The evaluation of the exposure doses until the end of September 2015 will be reported to the Ministry of Health, Labor and Welfare by the end of October 2015.

*The "workers expected to work under especially high radiation" means workers who are involved in the operations in which they could be exposed to the emergency exposure dose limit (100mSv), which is stipulated in the "Ordinance on Prevention of Ionizing Radiation Hazards, Chapter 7." Specifically, they are the workers who are engaged in maintaining the functions to cool down the reactor facilities or the spent fuel pool in the area of reactor facilities, a steam turbine and its related facilities, or their surroundings where the radiation doses might exceed 0.1mSv/h. Or they are the workers who are engaged in keeping the functions to control or prevent the release of a large number of radioactive materials in case of malfunction or damage of the reactor facilities.