Fukushima seabed radiation to be cemented
Tokyo - The operator of Japan's tsunami-crippled nuclear plant is to cover a large swathe of seabed near the battered reactors with cement in a bid to halt the spread of radiation, the company said on Wednesday.
A clay-cement compound will be laid over 73,000m² of the floor of the Pacific in front of the Fukushima Daiichi plant on the nation's northeast coast, said Tokyo Electric Power Company (Tepco).
The area is equivalent to around 10 football pitches.
"This is meant to prevent further contamination of the ocean... as sample tests have shown a relatively high concentration of radioactive substances in the sea soil in the bay," a company spokesperson said.
Reactors at the plant went into meltdown after their cooling systems were knocked out by the monster tsunami of March last year, which was generated by a huge undersea earthquake.
Contaminated water from the plant leaked into the sea and radioactive particles concentrated on the seabed. Scientists fear ocean currents could pollute areas further afield.
The cover will be 60cm thick, with 10cm expected to be eaten away by seawater every 50 years, the Tepco official said.