Press Releases 2013

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 around 10:46 AM on January 24, 2013, a fire alarm went off in the west side of the basement of the Auxiliary Operation Shared Facility (Common Pool Building) at Fukushima Daiichi Nuclear Power Station. Later, smoke coming out of the building was reported by a worker at the site. At 10:59 AM, the incident was reported to the fire department. Smoke came out of the auxiliary power cable of cleaning equipment used to polish the floor during decontamination. As a worker immediately pulled out the power cable, smoke stopped coming out. Since no fire or smoke was found at the site as a result of investigation by a TEPCO employee, the fire alarm was reset at 11:15 AM. Then at 12:38 PM, the fire department judged the incident to be a fire and confirmed that the fire had been extinguished. There has been no injury reported due to the incident. The incident has caused no impact on the plant conditions so far and the common pool cooling has been continued. No significant change in the monitoring post data has been found. As a result of investigation performed later on, the direct cause of the fire was identified to be the temporary cable of 200V distribution board for temporary lighting being connected to 100V cleaning equipment. As a countermeasure, we have reminded workers including the parties involved to get approval from a TEPCO supervisor to use the power supply and check the working voltage before use.

- At 2:47 PM on February 4, the reactor injection amounts at Units 1 and 3 were adjusted as follows since the amounts had decreased.
[Unit 1] Feed water system: Increased from approx. 2.4m³/h to approx. 2.5m³/h, Reactor core spray system: Increased from approx. 1.9m³/h to approx. 2.0m³/h.
[Unit 3] Feed water system: Increased from approx. 1.8m³/h to approx. 2.0m³/h, Reactor core spray system: Increased from approx. 3.3m³/h to approx. 3.5m³/h.

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

* Revised past progress

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