INES Not Applicable
Approximately 11 m3 amount of water leakage occurred from a
pipe joint of desalination system (reverse osmosis membrane, RO-3) inside the temporary warehouse on 9 October, 2013.
The water has retained in the dike installed in the warehouse.
The radioactivity concentration of the leakage water was 34kBq/cm3 by totall beta nuclides.
Out of eleven workers who were working in the warehouse, six workers had radioactive material on their bodies, and five workers had no radioactive material on their bodies. The maximum effective doses of the workers were 0.48 mSv (by gamma radiation) and 1.2 mSv (by beta radiation) .
Event date: Wed, 09-10-2013