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TEPCO: Melted fuel ate into containment vessel
The operator of the damaged Fukushima Daiichi nuclear power plant has announced the results of an analysis on the state of melted fuel in the plant's Number 1 unit.
The Tokyo Electric Power Company, or TEPCO, and several research institutes made public their analyses on the melting of fuel rods at 3 of the plant's units at a government-sponsored study meeting on Wednesday. The analyses were based on temperatures, amounts of cooling water and other data.
TEPCO said that in the worse case, all fuel rods in the plant's Number 1 reactor may have melted and dropped through its bottom into a containment vessel. The bottom of the vessel is concrete covered with a steel plate.
The utility said the fuel may have eroded the bottom to a depth of 65 centimeters. The thinnest part of the section is only 37 centimeters thick.
TEPCO also said as much as 57 percent of the fuel in the plant's Number 2 reactor and 63 percent in the Number 3 reactor may have melted, and that some of the melted fuel may have fallen through reactor vessels.
Wednesday, November 30, 2011 20:02 +0900 (JST)
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Fukushima to call for scrapping all reactors
The governor of Fukushima Prefecture in northern Japan says he will ask the government and Tokyo Electric Power Company to decommission all nuclear reactors in the prefecture.
Fukushima hosts a total of 10 nuclear reactors, including 6 at the Fukushima Daiichi plant. Four of those were crippled in the March 11th earthquake and tsunami.
Governor Yuhei Sato told reporters on Wednesday that the prefecture's reconstruction plan will call for the scrapping of all the reactors. The plan prioritizes the safety of children.
Sato said prefectural authorities reached the decision after discussing the impact that the decommissioning would have on employment, the economy and the finances of local municipalities.
He added that the prefecture will do its best to create jobs for people who currently work at nuclear plants.
Sato is the first governor of a prefecture hosting nuclear plants to demand the decommissioning of nuclear facilities following a serious accident.
Officials in Fukushima will finalize the draft of the reconstruction plan on Thursday, and they aim to make a final decision on it by the end of the year.
Tokyo Electric Power Company has already decided to decommission the 4 severely damaged reactors at the Fukushima Daiichi plant. The utility also says it will consult with local authorities about what to do with the remaining 6 reactors.
Under normal operating conditions, the 10 reactors have a total generating capacity of 9 million kilowatts per hour, accounting for 19 percent of all nuclear power generated in Japan.
Wednesday, November 30, 2011 19:25 +0900 (JST)
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