In July, workers at Fukushima Daiichi removed 2 unused fuel assemblies from the spent fuel pool of Reactor 4. On Monday, TEPCO examined one of the assemblies to determine the extent of the damage to the fuel rods.
The investigation was carried out on the operation floor of the common fuel pool building. Workers removed a tie rod from the fuel assembly and inspected the external conditions of the rods.
There was some foreign debris identified inside of the fuel assembly, appearing to originate from the destroyed outer walls of the reactor building.
Today, the other extracted fuel assembly will be examined. TEPCO plans to be removing the fuel assemblies at some point after December 2013.