(OilPrice) Tokyo Electric Power Co. (Tepco) now says the meltdown of the Fukushima No. 1 nuclear power plant in March 2011 involved all the fuel rods in the affected reactor, causing them to fall to the bottom of the containment vessel.
Eight months after the massive tsunami caused the accident, Tepco said the meltdown had affected only about two-thirds of the rods. Its revised estimate, issued Aug. 6, said Reactor 3’s emergency cooling system stopped working six hours earlier than previously believed, and that the meltdown had begun between four and five hours earlier, as well.
The previous report, issued in November 2011, said the cooling system, called HPCI, had shut down at 2:42 a.m. on March 13, 2011. But the new study learned that the cooling system appeared to have lost its cooling function at about 8 p.m. the night before.
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