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Tokai JCO Criticality Accident

Report [1](10/1/1999 3:45 p.m.)

Accident is not over

In regards to the accident first detected in the afternoon of 9/30/99, it has been reported that the criticality condition had ceased after the coolant extraction was completed early this morning (10/1/99). However, we do not believe that the accident is over.

Although the criticality condition has ceased, the radioactive materials are still being released into the atmosphere, and CNIC thinks that this condition will continue yet for a while.

Furthermore, effective measures have not been taken to respond to the above condition. It seems necessary to remain fully cautious of the situation.


Citizens' Nuclear Information Center
Akebonobashi Co-op 2F-B, 8-5 Sumiyoshi-cho,
Shinjuku-ku, Tokyo, 162-0065, Japan