nuclear-news

[Contaminated water coming down to the sea?]Chloride concentration increased 270% of 2 weeks ago in observation holes

Posted by Mochizuki on April 23rd, 2013

About the major leakage of highly contaminated water, the chloride concentration is observed to be increasing in the observation holes.

Tepco is conducting the radiation test of ground water in the downstream of the leaking reservoirs. (Between the reservoirs and the sea.)

The leaking water contains high level of β nuclide and chloride. If they detect it on the downstream of the reservoirs, it means the contaminated water is penetrating underground.

They tested on 4/10 and 4/22/2013. Though total β nuclide is lower than the detectable level, the chloride concentration significantly increased in 3 of 7 holes.

(4/10 → 4/22)
Well (hole) 1 : 40 → 46 ppm
Well 2 : 16 → 43 ppm
Well 3 : 65 → 99 ppm

On 4/15/2013, Fukushima Diary reported the chloride concentration was high in those observations holes, but now it’s becoming higher.

(cf, [Underground contamination?] High level of chloride concentration detected between the leaking reservoirs and sea [URL 1])

Actually these holes were made as “Underground bypass pumping well”. It was to pump up the groundwater before flowing into the plant. The pumped water is to be discharged to the sea without purification. Detecting radiation from these wells would collapse their water reducing plan.

(cf, The leaking highly contaminated water may collapse Tepco’s countermeasure for ground water [URL 2])

http://fukushima-diary.com/2013/04/contaminated-water-coming-down-to-the-seachloride-concentration-increased-270-of-2-weeks-ago-in-observation-holes/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+FukushimaDiary+%28Fukushima+Diary%29

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April 24, 2013 - Posted by arclight2011 | Uncategorized