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Countermeasures for Water Leakage

Regarding the accumulated water in the dam surrounding the contaminated water tanks due to the heavy rain from Typhoon No. 18

September 17, 2013

Due to Typhoon No. 18, rain water had accumulated in the dam surrounding the contaminated water tanks in Fukushima Daiichi NPS. We conducted a radiation density survey and transferred the water to the tanks if the all-beta density was higher than the density limit in the reactor regulation announcement (which is 30 Bq/L) on September 16. In the case that the all-beta density was lower than the density limit, we discharged the water over the dam.

For detail, please refer the document from the link below.