Fukushima Daiichi NPS Prompt Report 2013

 

We have conducted water quality survey of the Tritium density in the seawater inside the port, of which sample taken on June 21, since a high concentration of Tritium and Strontium have been detected at the observation hole at the east side of the Unit 1-4 Turbine Buildings. According to the results shown as below, a rising trend of Tritium was observed.

<North side of the Unit 1-4 intakes>
-Sample as of June 21: 1,100 Bq/L
-Sample as of June 10: 500 Bq/L (previously announced)
<Front of Unit 1/2 bank protection>
-Sample as of June 21: 910 Bq/L
-Sample as of June 14: 600 Bq/L (previously announced)
We will take samples of the seawater and measure the concentration again.
There were no changes in the all beta concentration of the seawater.