Fukushima Daiichi NPS Prompt Report 2013

On April 3, order of 10¹ (Bq/cm³) of radioactive concentration was detected as a result of a water quality analysis of the water between the outermost sheet (bentonite sheet) of three layered sheets and the ground in the underground reservoir No.2.

Therefore, we conducted a water quality analysis of the water between the outermost sheet (bentonite sheet) and the inner sheet (two layered water shielding sheet) today (April 5) and detected approximately 10⁶ (Bq/cm³) of radioactive concentration.

We will conduct additional water quality analysis tomorrow (April 6).

Now we are investigating this incident.