Regarding the radioactive water leakage from the condensed water transfer pipe (anti-pressure hose) connected to the condensed water storage of the desalination system (reverse osmosis membrane) at Fukushima Daiichi Nuclear Power Station which led to water leakage into the sea through the drainage, we received a directive document on March 26, 2012.
On April 5, 2012, we received a warning from NISA in response to the radioactive water leakage from the condensed water transfer pipe connected to the condensed water storage of the desalination system (reverse osmosis membrane) at Fukushima Daiichi Nuclear Power Station (due to the anti-pressure hose coming off of the connecting flange).
According to the direction and warning given, measures have been taken against radioactive water leakage into the sea from the condensed water transfer pipe connected to the condensed water storage of the desalination system at Fukushima Daiichi Nuclear Power Station. The summarized report on this matter was submitted to NISA on July 30, 2012.
Then on August 6, 2012, we received a directive document^* "Measures for the leakage of radioactive water from the condensed water transfer pipe at Fukushima Daiichi Nuclear Power Station Direction (Direction)" (Previously announced on March 26, April 6, July 30 and August 6, 2012).

In accordance with the direction given, we have developed the environment impact evaluation procedure to follow in the event of radioactive water leaking into the sea and submitted it to NISA today.

End

Attachment
"Measures for the leakage of radioactive water from the condensed water transfer pipe at Fukushima Daiichi Nuclear Power Station (Report)"(PDF 316KB)

* Directive document
"Measures for the leakage of radioactive water from the condensed water transfer pipe at Fukushima Daiichi Nuclear Power Station Direction (Direction)" (August 3, 2012 NISA No.1)

The aforementioned documents are available only in Japanese. We apologize for the inconvenience this may cause.