Due to the Tohoku-Chihou-Taiheiyou-Oki Earthquake which occurred on March
11th 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 17th, we have put together the roadmap towards restoration from
the accident. By bringing the reactors and spent fuel pools to a stable
cooling condition and mitigating the release of radioactive materials,
we will make every effort to enable evacuees to return to their homes and
for all citizens to be able to secure a sound life.
Below is the status of TEPCO's major facilities.
*New items have been underlined
[Nuclear Power Station]
Fukushima Daiichi Nuclear Power Station:
Units 1 to 3: shutdown due to the earthquake
(Units 4 to 6: outage due to regular inspections)
* On April 26th, spraying of fresh water by concrete pumping vehicle was
conducted (for around 2 minutes) in order to check the water level of
spent fuel pool of Unit 3. After that, at 12:25 pm, fresh water
injection by spent fuel pool cooling and filtering system started and
ended at 2:02pm.
* On April 26th, aiming to increase the power supply capacity in future
as well as to strengthen the insulation, we are preparing for
temporarily switching the power source of Unit 3 & 4 from the current
"Okuma line" to "Toden Gensiryoku line" in line with the construction
work to raise the voltage of the offsite power of Unit 3 & 4 from 6.6
kV to 66 kV.
* Since 1:30 pm of April 26th, we have started spraying the dust inhibitor
to the area on the coastal side of Units 1 to 4 by unmanned crawler dump
truck in full swing, in order to prevent diffusion of radioactive
materials.
* From 11:35 am to 1:24 pm on April 26th, we have checked the status
inside the reactor building of Unit 1 using remotely-controlled robot.
As a result, we have confirmed that the radiation dose there has not
changed so much since the previous check, and that there was little
water leakage from the primary containment vessel.
Fukushima Daini Nuclear Power Station:
Units 1 to 4: shutdown due to the earthquake
Kashiwazaki Kariwa Nuclear Power Station:
Units 1, 5, 6, 7: normal operation
(Units 2 to 4: outage due to regular inspection)
[Thermal Power Station]
- Hirono Thermal Power Station Units 2 and 4: Shutdown due to the
earthquake
- Hitachinaka Thermal Power Station Unit 1: Shutdown due to the earthquake
[Hydro Power Station]
- Power supply has returned to normal and facilities damaged by the
earthquake are now being handled in a timely manner.
[Impacts on Transmission Facilities]
- Power supply has returned to normal and facilities damaged by the
earthquake are now being handled in a timely manner.
[Avoidance of further Implementation on Planned Rolling Blackouts and
Request for Conserving Electricity Consumption]
Currently, we are working to restore electricity supply after our nuclear
and thermal power facilities were severely damaged by
Tohoku-Chihou-Taiheiyou-Oki Earthquake. The widespread understanding and
cooperation of our customers to conserve electricity have contributed to
the improvement of this tight power supply-demand balance situation.
Amidst this backdrop, since the electricity supply will be able to balance
with the demand for the time being, we have decided not to implement
further rolling blackouts in principle.
However, we sincerely ask for your continued cooperation in reducing
electricity consumption due to the possible increase in demand caused by
warmer weather or unexpected trouble at power stations that are currently
being restored to service. In case the electricity supply-demand balance
becomes tighter than expected, we may regrettably need to restart the
implementation of rolling blackouts, with prior notice. We kindly ask for
your cooperation.
We will do our best to maintain this policy of avoiding further
implementation of rolling blackouts during the summer.
Appendix: Past Progress (PDF 284KB)
* Revised past progress
