
Crews fixing gauges inside Fukushima Daiichi unit 1 discovered water levels in the reactor were much lower than originally thought – likely 5 meters below the top of the 4-meter-long fuel rods.
Kyodo News quoted TEPCO as saying it has found multiple small holes in the pressure vessel's welded piping. The possibility of core-exposed coolant seeping into underground tunnels that might leak complicates TEPCO’s plan to circulate water inside the containment vessel to bring the fuel to cold-shutdown temperatures in six to nine months. <...>
The volume of water pumped into the unit so far indicates significant leakage has already occurred: The containment can only hold 7,800 cubic meters of water. More than 10,000 cubic meters of water has been pumped into the 360-cubic-meter pressure vessel within it.
nuclearstreet.com
www.tepco.co.jp