TEPCO to pump up, release groundwater around Fukushima No. 1 plant into sea

TEPCO to pump up, release groundwater around Fukushima No. 1 plant into sea

The government and Tokyo Electric Power Co. are considering pumping up contaminated groundwater from 42 wells, or subdrain pits, around the Fukushima No. 1 nuclear power plant's Nos. 1 to 4 reactors and releasing it into the Pacific Ocean after removing almost all radioactive substances from it, The Yomiuri Shimbun has learned.

The plan is aimed at curbing an increase in contaminated water in reactor and turbine buildings by reducing the amount of groundwater flowing into those buildings. TEPCO expects it will be able to reduce the amount of groundwater seeping into the buildings, currently about 300 to 400 tons a day, by about 200 tons.

Along with frozen ground walls, it will be the major measure to deal with contaminated water at the plant, according to TEPCO.

TEPCO plans to explain about the release of the groundwater into the sea to local fisheries cooperatives later this month and aims to start it in autumn.

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