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Event Report Forms (ERFs) are filed to the IAEA. Sometimes there are multiple event reports, updating the rating, the event description. Here you only see the latest event report

ERF send date: Thu, 16-04-2015
ERF description: 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) .

More information:

• Water leakage from a desalination system (RO-3) (127kb)

ERF rating date: 16-04-2015
ERF contact person: Shoji Takeyama
ERF address: Reported by Nuclear Regulation Authority of Japan on 16 Apr 2015. Last update on 16 Apr 2015
ERF affiliation: Nuclear Regulation Authority

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