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.
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