Early Monday morning contract workers at Fukushima Daiichi reported that water was leaking from pipes transferring water from the desalination stations to the condensed water storage tanks. TEPCO was forced to halt the operations of the reverse osmosis membrane transfer pumps to stop the leak.
When workers checked the pipes again, they found that the water had been pouring into a nearby drainage pit into the ocean, and may have leaked into the waters. TEPCO conducted sampling surveys on the leaked water, the water which was poured into the drainage, and the seawater around the exit of the drainage. As a result, the utility confirmed that some water including radioactive materials was poured into the sea from the exit of the drainage located at about 300 m south from the discharge channel of Unit 1-4 of Fukushima Daiichi Nuclear Power Station.
Currently, both of the cesium adsorption apparatus, the water desalinations (reverse osmosis membrane, and evaporative concentration apparatus) are still shut down. TEPCO did not release adequate information related to the radiation levels to provide any levels or reference values.