Based on the Recovery Plan (submitted and published on January 31, 2012) prepared in accordance with the Nuclear Operator Emergency Action Plan, Fukushima Daini Nuclear Power Station is now proceeding with recovery of facilities for maintaining cold shutdown of the station.
We report the recovery progress status at the end of March 2012 as shown below:

1. Progress status of Recovery Plan
The recovery work of each unit is proceeding steadily.

2. Major progress statuses based on Recovery Plan (March)
○Unit 1  Installation of the power panel (M/C 1C) was completed
As substitute for the Unit 1 power panel (M/C 1C) damaged by the tsunami of Tohoku-Chihou-Taiheiyo-Oki Earthquake, a new power panel was manufactured and the installation at the site (Annex of Reactor Building) was completed on March 28, 2012. [See Appendix 2]
From now, toward the switch to permanent installation, the function check including withstand voltage tests will be conducted, while proceeding with recovery of permanent cable installation for power supply to each related system.

○Unit 1  Function check of the residual heat removal equipment cooling system (D system) was completed
As repair of motor and pumps for the Unit 1 residual heat removal equipment cooling system (D system) was completed, the trial running using temporary cables was conducted to confirm that there was no problem with the system on March 15, 2012. [See Appendix 2]
From now, toward the switch to permanent installation, recovery work of permanent cable installation will be conducted.

○Unit 4  Permanent installation of the power panel (P/C 4D-2) was completed
As substitute for the Unit 4 power panel (P/C 4D-2) damaged by the tsunami of Tohoku-Chihou-Taiheiyo-Oki Earthquake, a new power panel was manufactured and the installation at the site was completed on March 8, 2012. As the function check including withstand voltage tests confirmed that there was no problem with the system, the system started to receive power supply and completed the permanent installation of the power panel on March 23, 2012. [See Appendix 2]
From now, recovery work of permanent cable installation for power supply to each related system will be conducted.

3. Other major progress statuses (March)
○Watertight work of Units 1-4 Seawater Heat Exchanger Building was completed
Watertight work (replacement with high-strength doors, space filling of equipment hatch cover using seal material, space filling between pipes and external walls through which the pipes penetrate using seal material, etc.) to prevent facilities from being wet or submerged was completed on March 31, 2012, as part of emergency safety measures for equipment exit and building penetration parts of Units 1-4 Seawater Heat Exchanger Building which were damaged by the tsunami of Tohoku-Chihou-Taiheiyo-Oki Earthquake. [See Appendix 2]
In accordance with the four points to consider^* 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.
For the consideration point 4, the systems subject to the measures were selected by the end of March 2012. From now, the impact assessment will be started for each system selected.

End

○APPENDIXES
·Appendix 1 Fukushima Daini Nuclear Power Station  Progress status based on Recovery Plan (as at the end of March 2012) (PDF 201KB)
·Appendix 2 <Photo> Major progress status/topics (PDF 82.1KB)
·Appendix 3 <Photo> Other topics (PDF 201KB)

* Four points to consider specified by Nuclear Safety Commission
On December 26, 2011, the Nuclear Safety Commission submitted a proposal 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 pointes when preparing and implementing the Recovery 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 recovery 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.