Based on the Restoration Plan (submitted on January 31, 2012, revised on May 31, October 16 and November 21, 2012) prepared in accordance with the Nuclear Operator Emergency Action Plan, Fukushima Daini Nuclear Power Station is now proceeding with restoration of facilities for maintaining cold shutdown of the station. We report the restoration progress status at the end of November 2012 as shown below.

1. Progress Status of the Restoration Plan
Following the restoration completion at Unit 4 on May 17, 2012, the restoration (permanent installation) of the equipments/facilities necessary to maintain cold shutdown and an internal voluntary inspection have been completed for Unit 3. On October 16, 2012, the updated restoration plan (second revision) including Unit 3 restoration completion was submitted to the government. (Previously announced on October 16, 2012)
The restoration progress report was partially corrected in accordance with the results of inspection done by the Nuclear Regulation Authority from November 7 to 9, 2012. The revised restoration plan (revision 3) was submitted to the government on November 21, 2012. (Previously announced on November 21, 2012)
The restoration work for Units 1 and 2 is proceeding steadily.

- % in the chart shows the progress rate of restoration work as per the Restoration Plan (Up to the permanent installation) as of the end of November 2012. % in parenthesis shows the progress rate of the previous monthly report. See Appendix 1 for details.
- At the internal inspection after the permanent installation, the equipments subject to the Restoration Plan will be tested (for each unit).

2. Major Progresses Based on the Restoration Plan (November 2012)

Installation of a power panel (M/C 1HPCS) in Unit 1 Reactor Building Annex
The power panel (M/C 1HPCS) damaged by the Tsunami in Unit 1 Reactor Building Annex was replaced with a newly manufactured power panel and installed on November 1. A function check will be performed on the new power panel. [See Appendix 1 and 2]

Installation of the control panel (high voltage panel) and the generator of the emergency diesel generator (H system) in Unit 1 Reactor Building Annex
As for the emergency diesel generator (H system) damaged by the Tsunami in Unit 1 Reactor Building Annex, newly manufactured high voltage panel and generator have been installed on November 9. A function check is to be performed. [See Appendix 1 and 2]

Installation of the power panel (P/C 2C-2) in Unit 2 Seawater Heat Exchanger Building
The power panel (P/C 2C-2) damaged by the Tsunami in Unit 2 Seawater Heat Exchanger Building has been permanently installed on November 12 after a function check. An internal voluntary inspection is to be performed. [See Appendix 1 and 2]

Permanent installation of the generators of the residual heat removal system cooling systems (A and C) in Unit 2 Seawater Heat Exchanger Building
After the power panel (P/C 2C-2) was installed in Unit 2, the power supply to the generators of Unit 2 residual heat removal system cooling systems (A and C) was switched from the temporary power supply to the permanent power supply on November 28. Since the system was confirmed to operate properly after switching power supply as a result of trial operation, the permanent installation of the generators of Unit 2 residual heat removal system cooling systems (A and C) was completed. An internal voluntary inspection is to be performed. [See Appendix 1 and 2]

Permanent installation of the generators of the residual heat removal system cooling seawater systems (A and C) in Unit 2 Seawater Heat Exchanger Building
After the power panel (P/C 2C-2) was installed in Unit 2, the power supply to the generator of the residual heat removal system cooling seawater system (A) was switched from the temporary power supply to the permanent power supply on November 26. The system was confirmed to operate properly as a result of trial operation. As for the generator of the residual heat removal system cooling seawater system (C), the permanent cable was connected to the power panel, and the system was confirmed to operate properly on November 29 as a result of trial operation. The permanent installation of Unit 2 residual heat removal system cooling seawater system (A and C) has been completed. An internal voluntary inspection is to be performed. [See Appendix 1 and 2]

Permanent installation of the generator of the emergency diesel generator cooling system (A) in Unit 2 Seawater Heat Exchanger Building
After the power panel (P/C 2C-2) was installed in Unit 2, the power supply to the generator of the emergency diesel generator cooling system (A) was switched from the temporary power supply to the permanent power supply on November 26. Since the system was confirmed to operate properly as a result of trial operation, the permanent installation of the generator of Unit 2 emergency diesel generator cooling system (A) has been completed. An internal voluntary inspection is to be performed. [See Appendix 1 and 2]

Permanent installation of the generator of the component cooling water system (A) in Unit 2 Seawater Heat Exchanger Building
After the power panel (P/C 2C-2) was installed in Unit 2, the power supply to the generator of Unit 2 component cooling water system (A) was switched from the temporary power supply to the permanent power supply on November 29. Since the system was confirmed to operate properly as a result of trial operation, the permanent installation of the generator of Unit 2 component cooling water system (A) has been completed. An internal voluntary inspection is to be performed. [See Appendix 1 and 2]

3. Inspection of the Structures inside Unit 4 Reactor

The seismic response analysis results based on the observation record of the Tohoku-Chihou-Taiheiyou-Oki Earthquake in 2011 indicate that the structures inside Units 1-4 RPV was evaluated to maintain sufficient safety functions. (Previously announced on August 18, 2011)
From November 27, 2012, the structures inside Unit 4 reactor (representative unit) for which opening of the reactor and fuel removal have been completed is being visually inspected for the purpose of obtaining more information on seismic impact. (Previously announced on November 26, 2012)

As a result of visually inspecting fuel assemblies (2 out of 8), core shroud^*1, fuel support^*2, (part of) shroud support^*3 and control rod guide pipe^*4, no problem was found. [See Appendix 3]

In accordance with the four points to consider^*5 specified by the Nuclear Safety Commission when the cancellation of a nuclear emergency situation was declared, TEPCO is committed to continuously pursuing the measures for restoration from nuclear emergency and further reliability improvement. As for the consideration point 4, the systems subject to the measures were selected at the end of March 2012. We are currently in the process of assessing impact on the selected systems.

Appendixes
1:Fukushima Daini Nuclear Power Station: Progress Status Based on the Restoration Plan (As of the End of November 2012)(PDF 87.9KB)
2:< Photos > Major Progress Statuses Based on the Restoration Plan (November 2012)(PDF 468KB)
- Installation of a power panel (M/C 1HPCS) in Unit 1 Reactor Building Annex
- Installation of the control panel (high voltage panel) and the generator of the emergency diesel generator (H system) in Unit 1 Reactor Building Annex
- Installation of the power panel (P/C 2C-2) in Unit 2 Seawater Heat Exchanger Building
- Permanent installation of the generators of the residual heat removal system cooling systems (A and C) in Unit 2 Seawater Heat Exchanger Building
- Permanent installation of the generators of the residual heat removal system cooling seawater systems (A and C) in Unit 2 Seawater Heat Exchanger Building
- Permanent installation of the generator of the emergency diesel generator cooling system (A) in Unit 2 Seawater Heat Exchanger Building
- Permanent installation of the generator of the component cooling water system (A) in Unit 2 Seawater Heat Exchanger Building
3:Inspection of the Structures inside Unit 4 Reactor(PDF 302KB)

*1 Core shroud
Cylindrical shape equipment made of stainless steel which separates the flow of cooling water in the reactor.
*2 Fuel support
Stainless-steel equipment installed on the core support panel which supports the fuel.
*3 Shroud support
Equipment made of high nickel alloy cylinder and circular disc which supports the core shroud, fuel, etc.
*4 Control rod guide pipe
Cylindrical shape equipment made of stainless steel installed on the control rod drive mechanism housing which stores and guides the control rods.
*5 Four points to consider specified by Nuclear Safety Commission
On December 26, 2011, the Nuclear Safety Commission submitted an opinion to the Prime Minster that the cancellation of a nuclear emergency situation of the TEPCO Fukushima Daini Nuclear Power Station is allowed to be declared, along with four points to consider for the issuance of the declaration. On January 11, 2012, the Nuclear and Industrial Safety Agency at the Ministry of Economy, Trade and Industry issued instructions to observe the consideration points when preparing and implementing the Restoration Plan for Fukushima Daini Nuclear Power Station.

1. Part of the facilities at the Fukushima Daini Nuclear Power Station is temporary installation, to which appropriate maintenance should be provided. The dependence rate of the temporary installation should be reduced according to a plan.
2. The safety facilities for part of the residual heat removal systems have not yet been recovered, to which appropriate management should be provided according to the situation until the restoration of these facilities. In preparing for natural disasters and other incidents, all possible measures should be taken to ensure safety.
3. Thorough safety management including the safety of workers should be implemented.
4. Based on the past pressure and temperature records before cold shutdown that showed abnormal values different from those during a regular period, impacts of these elements on the facilities should be considered.