In accordance with the Written Directives* received from the Nuclear and 
Industrial Safety Agency, the Ministry of Economy, Trade and Industry on 
July 16, 2007, The Tokyo Electric Power Company, Inc. (TEPCO) has since 
studied the observed seismic data collected at Kashiwazaki-Kariwa Nuclear 
Power Station on the day when Niigata-Chuetsu-Oki Earthquake (hereinafter 
referred to as "the Earthquake") occurred. We inform herein that we have 
prepared the (first) Report on the Analysis of Observed Seismic Data collected 
at the nuclear power station when the earthquake occurred, and submitted it 
today to the Nuclear and Industrial Safety Agency, the Ministry of Economy 
Trade and Industry.

[Re: Directives* provided by the Nuclear and Industrial Safety Agency, 
the Ministry of Economy, Trade and Industry]
 1. Analysis of observed seismic data collected when the Earthquake occurred
 2. Verification of Seismic Safety for Safety Important Facilities

We will continue to collect and compile available records on aftershock 
data, and analyze the observed seismic data and verify seismic safety of 
important facilities by using the collected and compiled records of observed 
seismic data.

* Written Directives
  Analysis of Observed Seismic Data Collected at Kashiwazaki-Kariwa Nuclear 
  Power Station on the Occasion of the Niigata-Chuetsu-Oki Earthquake in 
  2007, and the Impact Assessment of the Earthquake on Seismic Safety 
  (July 16, 2007)

Appendix
•Summary of the (First) Report on the Analysis of Observed Seismic Data 
 Collected at Kashiwazaki-Kariwa Nuclear Power Station on the Occasion 
 of the Niigata-Chuetsu-Oki Earthquake in 2007(PDF 247KB)