Water leaks from purification equipment at Fukushima Daiichi Nuclear Power Plant; 10 pipe valves left open. Initially, it was estimated that the amount of water that leaked was approximately 5.5 tons, containing approximately 22 billion becquerels of radioactive materials such as cesium-137.
Both figures have been revised downward to approximately 6.6 billion becqerels. TEPCO said that it had finished collecting the water-soaked soil on the 12th of this month, but when the soil under the concrete-paved ground was examined, the concentration was up to 7 millisieverts per hour.