Press Releases 2013

 

Based on the Restoration Plan (submitted on January 31, 2012, revised on May 31, October 16, November 21, 2012 and March 29, 2013) prepared in accordance with the Nuclear Operator Emergency Action Plan, restoration of facilities for maintaining cold shutdown of the station is performed in a planned manner.

At Unit 1, the piping of the residual heat removal system cooling seawater system (B) with liner coming off has been repaired, and soundness of the system and the relevant system was confirmed by internal voluntary inspection. Therefore, the restoration of equipment/facilities necessary to maintain cold shutdown at Unit 1 was completed today.

Herewith, the restoration of equipment/facilities necessary to maintain cold shutdown based on the Restoration Plan at all Units (Unit 1-4) at Fukushima Daini Nuclear Power Station was completed.

We will compile the Progress Report on the Restoration Completion and release the final report to the national and local governments.

As for the consideration point 4 ("Consideration of impacts on the facilities based on the past pressure and temperature records that showed abnormal values different from those during a regular period") out of the four points to consider* specified by the Nuclear Safety Commission when the cancellation of a nuclear emergency situation was declared, the systems subject to the measures were selected at the end of March 2012. We assess each facility on the basis of results/criteria for judgment after that, and currently in the process of assessing impact on the selected systems.

End

* 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.

Attachment
1. Fukushima Daini Nuclear Power Station: Progress Status Based on the Recovery Plan (As of May 30, 2013) (PDF 310KB)
2. < Photos > Major Progress Statuses Based on the Restoration Plan (May 2013) (PDF 89.9KB)
Permanent installation of the electric motors of the reactor coolant purification systems (A) and the purge line (A and B) in Unit 1 Reactor Building