The amounts of contaminated water at Fukushima Daiichi have been increasing tremendously from groundwater and precipitation over the last year; mixing with the highly radioactive coolant water which is accumulating in the reactor buildings, turbine buildings and basements of the complex after leaking from the destroyed reactor vessels.
Koydo News reports TEPCO announced it began designing plans to construct over a dozen wells to redirect and work to halve the flow or groundwater seeping into the damaged reactor buildings.
“By creating a groundwater bypass, the amount of water flowing (into the) reactor buildings is expected to be reduced by about 50 percent,” Tepco said in a paper it submitted to the government at a meeting to check its progress on decommissioning the four crippled reactors.
The utility wants to use the wells to direct some of the groundwater into the Pacific Ocean — likely about 1,000 tons per day — before all of it seeps into the reactor buildings and elsewhere.
TEPCO says it will check the contamination level of any groundwater before releasing it into the sea, but did not reveal detailed descriptions of how it would carry out these checks.
The amount of on-site storage for the contaminated water is unable to contain all of the radioactive water if forced to store the contaminated groundwater as well.
A government official who briefed reporters on the meeting said the bypass is likely to become operational around September or October.
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