Fukushima Daiichi NPS Prompt Report 2013

This is follow-up information on the latest situation concerning the detection of high densities of Tritium and Strontium in the observation hole at the east side of the Unit 1-4 Turbine Buildings of Fukushima Daiichi NPS.

We would like to make an announcement on measurement results of the tritium densities in water sampled on August 5 and 6 from the groundwater observation hole No.1-5 as we obtained the results.

The detected tritium densities were higher than the previous density (in the sample taken on July 31).

<Groundwater observation hole No.1-5>
- Sampling on August 6:
Tritium  45,000Bq/L
- Sampling on August 5:
Tritium  56,000Bq/L
- Sampling on July 31:
Tritium  28,000Bq/L (previously announced)

We are continuing to tackle this problem in such manners as to intensely bring forward implementation of contamination prevention measures such as foundation improvement work to the bank protection, and comprehensively intensify the monitoring by using the results of additional boring to drill additional locations, and the analyses results on seawater at such locations as the port interior and the water outlets.

For the past sampling results, please refer to the following page on our website:
http://www.tepco.co.jp/en/nu/fukushima-np/f1/smp/index-e.html