Central Research Institute of Electric Power in Japan, researchers announced the 26, they found the first nuclear power plant accident in Fukushima, the water containing radioactive substances as early as March 26 had begun to flow into the sea, early speculation on the date of Tokyo Electric Power Company, and into the sea of radioactive cesium-137 is the Tokyo Electric Power Company announced that more than three times the value.

Tokyo Electric Power Company had speculated that the water main is started from April 1, into the sea, before the radioactive substances are released into the atmosphere and then fall into the sea. The total amount of sewage into the sea for 520 tons, which contains cesium-137 to reach 940 trillion becquerels.

Central Power Research Institute Principal Investigator Daisuke Jin Zhi said, according to his research team led by the half-life and other factors, analysis of sea water contains cesium-137 and iodine-131 ratio, then we can find out by studying the ratio of radioactive substances with the effluent leaking into the sea, or leaks into the atmosphere and later fall sea. Half-life of cesium-137 is about 30 years, and half-life of iodine-131 is about 8 days.

It was found that the first nuclear power plant accident in Fukushima, the water containing radioactive substances as early as March 26 had begun to flow into the sea, and until the end of May there is the sewage into the sea. Directly into the sea of radioactive cesium-137 to 3500000000000000 Becquerel, the Tokyo Electric Power announced that more than three times the value.