On April 15, 2011, we, Tokyo Electric Power Company, received the 
instruction document* on "Offsite power supply security of nuclear power 
stations and reprocessing plants" from Nuclear and Industrial Safety Agency 
of Ministry of Economy, Trade and Industry (NISA). In response to the 
instruction, we compiled the implementation status of measures to secure 
the offsite power supply and reported to NISA on May 16, 2011. 
                       (Previously announced on April 15 and May 16, 2011) 
 
On June 7, 2011, NISA determined the report to be appropriate, and at the 
same time, we received the instruction from NISA to report the measures to 
secure the offsite power supply to Fukushima Daini Nuclear Power Stations 
considering the status of the equipment restoration there and 
implementation of emergency safety measurements to keep the cold shutdown 
of the reactors. On July 7, 2011, we compiled the implementation status and 
reported to NISA 
                          (Previously announced on June 7 and July 7, 2011) 
 
In those reports we mentioned that we would evaluate the safety of 
foundations of transmission towers for the offsite power supply to nuclear 
power stations etc later. We hereby announce that we compiled the 
evaluation results and reported to NISA today. 
 
                                                                       End 
 
○Attachment (The attachment file will be posted later.) 
Safety evaluations on foundations of transmission towers for the offsite 
power supply to nuclear power stations and reprocessing plants 
 
*Instruction document 
"Offsite power supply security of nuclear power stations and reprocessing 
plants (instruction document)" (April 15th, 2011, NISA No.3) 
There was a large blackout within the service area of Tohoku Electric Power 
Company due to Miyagiken-oki Earthquake on April 7, 2011. 
This accident cast uncertainty about the reliability of power systems, 
since it starting from a grounding fault in one part of the power systems 
led to the cut of offsite power supply systems to nuclear power stations 
and reprocessing facilities (collectively "nuclear power stations etc."). 
Therefore, Nuclear and Industrial Safety Agency (NISA) instructs general 
electricity utilities to conduct the items stated below (only 1 and 4 are 
applicable to processing facilities). NISA also orders them to report the 
implementation status by May 16, 2011. 
 
1.Considering that outage in power supply due to earthquake etc. could 
  affect offsite power supply to nuclear power stations etc., analyze and 
  evaluate the reliability of power supply in your company's power systems 
  which could affect power supply to nuclear power stations etc, and 
  consider measures to improve the reliability further of power supply to 
  such nuclear power stations (including enforcement of on site power in 
  nuclear power stations etc.). As for processing facilities, consider 
  improving equipment within such facilities which corresponds to the 
  measures above concerning the reliability of power systems which supplies 
  power to such facilities. 
 
2.In order to improve the reliability of power supply to each unit in your 
  nuclear power stations, connect all the transmission lines which are 
  connected to multiple power lines to each unit and enable power supply. 
 
3.Concerning power line towers of your nuclear power stations, evaluate 
  seismic adequacy, stabilities of foundation against earthquakes and 
  depending on the result conduct necessary countermeasures such as 
  reinforcement work.
 
4.Concerning electrical facilities such as switchyards of your nuclear 
  power stations etc., conduct countermeasures such as installing them 
  indoors and making them watertight to exclude impacts on tsunami.