On 22 July 2011, the Fukushima Daiichi nuclear plant lost external electrical power to reactors 3 and 4.  This affected cooling operations, but they were able to get back up generators working.

Tokyo Electric Power Company announced that the power loss was due to an incorrectly wired circuit breaker.  They say the circuit breaker was set up to handle only one third the amount of electricity that was actually needed to run the reactor’s cooling systems.

This comes after TEPCo officials held a conference claiming that Yakuza (organized crime; aka gokudō, aka bōryokudan or aka ninkyō dantai) could be infiltrating the ranks of employees at the Fukushima Daiichi nuclear plant.  TEPCo also says they think Yakuza are taking over rebuilding efforts in the quake and tsunami damaged parts of Japan.  TEPCo offered no proof.  They implied that Yakuza were causing the delays in controlling the damaged nuke plant, and other problems.   Again, Tokyo Electric offered no proof of their claim, and it sounds more like they’re trying to use Yakuza as scape goats for their own incompetence.