Fukushima Daiichi NPS Prompt Report 2013

This is follow-up information on the water found leaking from accumulated water treatment system (vehicle-mount type) for Units 5 and 6 at Fukushima Daiichi NPS today (on September 12).

We would like to make an announcement on the analysis result of the leaked water.
The results are approximately the same as the result of water which is used as sprinkling water at the site.
*Radioactive concentration of water which could be used as sprinkling water at the site: The sum of cesium-134 and cesium-137 should meet 1×10^-2Bq/cm³.

<The results of sampled leaked water>
Cesium-134: Below the detection limit value (the detection limit value: 1.6×10^-3Bq/cm³)
Cesium-137: 4.2×10^-3Bq/cm³.

We performed a further investigation into the range where leakage was found, and found a trace of water leakage with the size approx. 2m×6m in the trailer where accumulated water treatment system is located.

Water having leaked from the inside to outside trailer was found over a range of approx. 3m×3m×1mm.