We, Tokyo Electric Power Company, recognize that we are the main party 
for the nuclear accident in connection with Tohoku-Chihou-Taiheiyo-Oki 
Earthquake on March 11, 2011 and have established "Fukushima Nuclear 
Accidents Investigation Committee" and "Nuclear Safety and Quality 
Assurance Meeting Accident Investigation Verification Committee" that 
consists of external experts, and have been investigating and verify 
the accident thoroughly.

We have finished summarizing, evaluating and verifying the facts revealed 
in the process of the investigation, considered countermeasures to prevent 
the same accident mainly with regard to the equipment and summarized an 
interim report on these results.
 
Also, we have received opinions on the interim report from "Nuclear Safety 
and Quality Assurance Meeting Accident Investigation Verification Committee".

We will continue to investigate and announce the facts and so forth once 
they are revealed and confirmed. 

<Attachment> 
- Fukushima Nuclear Accidents Investigation Report (Interim): Main body 
  (Summary) (PDF 301KB)  
- Fukushima Nuclear Accidents Investigation Report (Interim): Main body  
                                                           (PDF 2.14MB)  
- Fukushima Nuclear Accidents Investigation Report (Interim): Schedule 
  (Time series)
- Opinions from Nuclear Safety and Quality Assurance Meeting Accident  
  Investigation Verification Committee on "Fukushima Nuclear Accidents  
  Investigation Report" (Interim) of Tokyo Electric Power Company  
                                                           (PDF 41.9KB)  
- Fukushima Nuclear Accidents Investigation Report (Interim): Attachment
- Fukushima Nuclear Accident Investigation Report  
  (Interim Report Supplementary Volume) (PDF 212KB)