Due to the Tohoku-Chihou-Taiheiyou-Oki Earthquake which occurred on March 11, 2011, TEPCO's facilities including our nuclear power stations have been severely damaged. We deeply apologize for the anxiety and inconvenience caused.
With regard to the accident at Fukushima Daiichi Nuclear Power Station, on April 17, 2011, we have compiled the roadmap towards restoration from the accident and on July 19 we accomplished the Step1 target "Radiation dose is in steady decline". Then on December 16 we confirmed the accomplishment of the Step 2 target "Release of radioactive materials is under control and radiation doses are being significantly held down".
In addition, on December 21, 2011, we have compiled the "Mid-to-long-Term Roadmap toward the Decommissioning of Fukushima Daiichi Nuclear Power Units 1-4, TEPCO".
In addition to the maintenance of the plant's stable condition, we will implement Mid-to-Long Term countermeasures towards the decommissioning of Fukushima Daiichi Nuclear Power Units 1-4 to enable evacuees to return to their homes as soon as possible and reduce the anxiety of the people in Fukushima and the whole nation as soon as possible.

Below is the status of TEPCO's nuclear power stations (Fukushima Daiichi and Fukushima Daini).

* The updates are underlined.

[Fukushima Daiichi Nuclear Power Station]
· Unit 1 to 4: Abolishment (April 19, 2012)
· Unit 5 to 6: Outage due to regular inspections before the earthquake

- At 10:00 AM on June 18, we started transferring the accumulated water in Unit 6 Turbine Building basement to the temporary tank. At 4:00 PM on the same day, we finished the transferring. At 10:00 AM on June 19, we restarted the transferring.

- At 4:01 AM on May 27, an alarm indicating abnormality in Unit 3 spent fuel pool desalination system went off, and the system was automatically stopped. Upon investigation, there was no water leak caused by this and the spent fuel pool cooling system is in operation. We're currently investing the cause. As we confirmed that the cause was a problem in the electrodialyzer, the isolated operation of RO unit was restarted by removing the electrodialyzer at 4:10 PM on May 28. As a result of investigation, we confirmed that the desalting facility had been stopped due to the descent in anode solution flow in the electrodialyzer. We investigated the cause of the descent in the flow in the anode side, the cause was identifiend that the obstruction in anode solution flow channel by the deposition. We assumed that the cause of the deposition was the decline in performance at the fileter of the electrodialyzer, and we conducted the cleaning of the deposition. We started the test operation of the desalting facility including the electrodialyzer on June 15, we confirmed that there was no problem in the operation. At 12:00 PM on June 19, the operation was restarted accordingly.

- At 10:30 AM on June 19, a worker from cooperative company who worked at Unit 4 Reactor Building covering work was injured by getting his fingers caught. The worker had an examination in Unit 5 and 6 emergency medical office, and the injury state were the contusion of left hand (middle finger and fourth finger) and laceration of right hand (index finger, middle finger, fourth finger and fifth finger). Since it was judged to need the emergency medical transport, the ambulance was called at 11:30 AM. After the emergency treatment such as washing and disinfection in Unit 5 and 6 emergency medical office, he was taken to J-villege at 12:10 PM. At 12:51 PM, the worker was transported to Iwaki Kyoritsu General Hospital. The medical examination and treatment by doctor is conducted currently. We confirmed that no radioactive material was found to be attached to the worker's body.

- A worker of TEPCO found the damages (8 places) on the PCV gas control system piping near the feed-water heating room entrance at Unit 3 Turbine Building 1st floor, and confirmed that the sounds was came from that part. At 2:40 PM, that place was kept at negative pressure, and we confirmed that the endohedral gas did not leak from the pipes. There was no change at Unit 3 PCV pressure, PCV hydrogen concentration and the exhaust gas flow rate at PCV gas control system. We will fix them by tapes as a temporary treatment.

[Fukushima Daini Nuclear Power Station]
· Unit 1 to 4: Shutdown due to the earthquake

Appendix: Past Progress (As of 3:00 pm, on June 19, 2012) (PDF 427KB)
Appendix: Past Progress (From March 11, 2011 to December 31, 2011) (PDF 523KB)
* Revised past progress

The aforementioned attachments are only available in Japanese.
We apologize for any inconvenience this may cause.