Poor estimates force timetable revision : National : DAILY YOMIURI ONLINE (The Daily Yo... - 0 views
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Energy Net on 19 May 11"Having failed to accurately grasp the extent of actual damage to nuclear reactors and the amount of water contaminated with radioactive substances, Tokyo Electric Power Co. has been forced to revise its timetable for resolving the nuclear crisis at its Fukushima No. 1 nuclear power plant. The plant operator released Tuesday an updated version of its road map to end the crisis, making some changes to critical aspects of the plan, especially in regards to cooling the reactors. It has been more than two months since the crisis began following the March 11 earthquake and tsunami. TEPCO had to review its strategy on cooling the reactors as it learned about an apparent leakage of a huge amount of contaminated water from a damaged containment vessel. The company said an estimated 87,500 tons of contaminated water has accumulated in the turbine buildings of the Nos. 1 to 4 reactors and elsewhere at the site. On Saturday, about 3,000 tons of contaminated water, which likely leaked from the containment vessel of the No. 1 reactor, was discovered in underground areas of the reactor building. Water had been pumped in to attempt to fill the containment vessel of the reactor and cool the fuel inside."