Fukushima Daiichi NPS Prompt Report 2013

At around 8:55 AM today (May 17), a TEPCO employee on patrol found water overflowing from the upper part of Units 5-6 RO treated water tank at Fukushima Daiichi Nuclear Power Station.

The leakage has stopped after closing the valve at 9:00 AM.
The leaked water has been absorbed into the ground (gravels) in the surrounding area and the leakage amount is estimated to be approx. 27m³.

The water leaked is usually scattered within the power station site and the γ density and all β density of the water are below the detection limits (based on the sampling results obtained yesterday). Sampling of the water will be performed to ensure safety.
Cesium 137 detection limit: 1.5x10^-3Bq/cm³
All β detection limit: 2.3x10^-2Bq/cm³