Not everything is under control, apparently

Seabed near nuke plant to be covered with cement

http://www3.nhk.or.jp/daily/english/20120222_01.html

Tokyo Electric Power Company will begin cementing the seabed near the Fukushima Daiichi nuclear plant to prevent radioactive materials from spreading at sea.

On Wednesday, the utility plans to start pouring cement and clay over a 70,000-square meter area near the water intakes of the plant's 6 reactors. The seabed is about 6 meters deep.

The company says a 60-centimeter layer on the seabed will prevent the spread of contaminated mud and sand for about 50 years.

Extremely high levels of radioactive cesium have been detected in the area. The cesium mainly came from melted nuclear fuel rods from 3 of the reactors and contaminated water that leaked into the sea.

There is growing concern that ships will scatter the contaminated sand when work begins to retrieve the fuel rods in several years' time.

Tokyo Electric will start full-scale application of the cement in late February and hopes to complete the task in 4 months.