Based on the Ordinance of the Ministry of Economy*1, Trade and Industry 
(METI), the Tokyo Electric Power Company has submitted a maintenance plan 
report regarding the 16th maintenance cycle*2 for Unit 1 of Kashiwazaki-
Kariwa Nuclear Power Station to the METI.

The maintenance plan of Unit 1 was stipulated in the safety regulations*3 
with the implementation of an inspection system to enhance the preservation 
activities for the nuclear power facilities, and describes the inspection, 
replacement, and reconstruction plans of the facilities, and safety 
management for periodic inspections with a 13-month operations period.

In order to continue monitoring the aftereffects of the Niigata-Tyuuetsu-
Oki Earthquake that occurred on July 16, 2007, we periodically conducted 
data sampling of the main parameters of the plant's operations. Although 
the results confirmed no significant changes compared to the pre-earthquake 
data, we are implementing a fatigue assessment as a special maintenance 
schedule planned during the time of the 16th periodic inspection. Moreover, 
we are also conducting a non-destructive inspection of the parts that were 
estimated to have not been affected by the earthquake, and are making 
inspection plans of the facilities which were estimated to not have 
affected the functions even though little effect was confirmed at the time 
of the earthquake.

While we have been putting all of our efforts into securing the safety of 
the station as a top priority, we are also implementing preventative 
countermeasures such as inspection restoration works, seismic strengthening 
works, and tsunami protection measures against disasters. We will enhance 
the preservation activities for the facilities of the nuclear power station 
to improve the reliability of the whole plant. 

*1 Ordinance of the Ministry of Economy
The ordinance was enforced on January 1, 2009. It was based on the partially 
revised Ordinance for the Enforcement, Electricity Business Act, following 
the partial revision of regulations regarding the installation and operation 
of the practical power reactor. The main revisions are as follows:
- The clarification of items to be mentioned in the Safety Regulations. 
  (distinguish the items to be mentioned in the Safety Regulations for the 
  Facilities for Nuclear Power Generation from items for other Electric 
  Facilities for Business Use, and report them respectively, Article 50)
- Enhancement of preservation activities (report of maintenance plans, 
  thorough preventative maintenance, Article 50, Article 94-3)
- Schedule optimization of periodic inspections (Article 91)

*2 16th maintenance cycle
The period from the start date of the 16th periodic maintenance to the day 
before the start date of the 17th periodic maintenance.

*3 Safety Regulations
Based on Article 42, the Electricity Business Act, a person who installs 
Electric Facilities for Business Use notifies METI of safety regarding 
construction, operation, and the maintenance of Electric Facilities for 
Business Use. 
Safety Regulations are established for each type of Electric Facility for 
Business Use (except Nuclear Power Generation facilities) and Electric 
Facilities for Business Use (Nuclear Power Generation facilities).
Maintenance plans have been established for each plant which starts periodic 
maintenance from April 1, 2009 as the Appendix of Safety Regulations 
(Electric Facilities for Business Use (Facilities for Nuclear Power 
Generation))