A total of 250 tons of highly contaminated radioactive water leaked into the sea in earlier May from the No. 3 reactor at the Fukushima Daiichi nuclear power plant, the Tokyo Electric Power Co. said Saturday. The water, leaked from a pit near a seawater intake of the reactor, contained an estimated 20 terabecquerels of radioactive substances, TEPCO was quoted by Koydo News as saying. The leak is estimated to have lasted for 41 hours from 2 a.m. on May 10 through 7 p.m. on the following day. The estimated amount of radioactive substances from the plant, crippled by the March 11 earthquake and ensuing tsunami, is about 100 times the annual allowable limit for release outside the plant, said TEPCO. However, the leak just raised the concentration of radioactive substances within the port of the power plant, but the level outside the port did not change significantly, said TEPCO. |