Workers at the Fukushima Daiichi nuclear power plant found a water leak in reactor No. 1, which may have caused a partial meltdown of the fuel rods, according to Reuters.
Workers entered the reactor building for the first time since the earthquake and tsunami in March. After adjusting water gauges, workers noticed water levels had fallen three feet in the reactor core. Exposed fuel rods may have partially melted, forming pellets that fell and damaged the inside of the reactor core. Officials said the leaked fuel was being kept cool and there was no risk of an explosion of the kind that blew the roof off the reactor in March. Tepco reportedly was rethinking plans to flood the core to keep the exposed fuel rods cool.
The latest leak may set back the company’s plan to decommission the plant in six to nine months.
Earlier in the week, Tepco said it had sealed a leak of radioactive water outside the plant's No. 3 reactor. It sealed a similar leak at the No. 2 reactor in April using liquid glass and other substances.
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