This nuclear power station has been shut down because of Tohoku-Chiho
On March 24, 2011, it was confirmed that 3 workers from cooperative
companies who were in charge of cable laying work in the 1st floor and
the underground floor of turbine building were exposed to the radiation
dose of more than 170mSv.2 of them were confirmed that their leg skins
were contaminated. Although they were decontaminated by laundering, they
were transferred to Fukushima Medical University hospital because there
is possibility that they get a burn injury by beta ray. After medical
examination at Fukushima Medical University Hospital, they were
transferred to National Institute of Radiological Sciences in Chiba
Prefecture on March 25 and stay for around four days to survey the
situation. Investigation result of the water that the workers stepped
in would be announced when it is reported. (previously announced)
We announce the investigation result of their working surroundings as
Radiation dose rate of surface of the water is approximately 400mSv/h.
Result of gamma-ray nuclide analyses based on sampling of puddle
We are assessing radiation dose of 2 worker's leg skin by beta ray.
We guess that this incident was caused because the workers regarded
radiation dose of working area as low from survey result of radiation
dose on March 23 and continued working without recognizing change of
working conditions of the day although alarm of their dosemeter rang.
We thoroughly instruct our employees and workers of cooperative companies
to recognize alarm of their dosemeter and evacuate when the alarm rings.