Tokyo Electric Power Co. (TEPCO) said today that fuel damage likely occurred in reactors 2 and 3 of the Fukushima Daiichi nuclear energy facility in the first few days after the March 11 earthquake and tsunami. Both reactors are now reported to be stable and at relatively low temperatures. The extent of the fuel damage is unknown. If the water gauges inside the two reactors are accurate, there was sufficient water in the reactors to prevent damage to all the fuel, the company said.
Most of the fuel damage that occurred in reactor 2 is believed to have taken place within 100 hours of the earthquake. TEPCO believes fuel was damaged in reactor 3 within 60 hours. The company previously confirmed that fuel was damaged in reactor 1.
TEPCO plans to install two heat exchangers today to lower the temperature of the used reactor fuel at reactor 2.
We’re increasing the number of Japan updates to keep you better informed of developments at Fukushima Daiichi. Currently, we’ll aim for three per week.