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)
*In order to identify the appropriate amount of injected water to submerge
the fuel in the reactor, we started changing the amount of water gradually
from approx. 6m3/h at 10:02 am, April 27th. From 10:14 am, April 29th, we
put the amount of injecting freshwater back to approx. 6m3/h and continue
injecting freshwater.
*On April 25th, the monitoring at 5 locations at the offshore area of
Ibaraki Prefecture was launched by Ministry of Education, Culture, Sports,
Science and Technology. As part of its monitoring, Japan Coast Guar has
conducted the sampling in seawater on April 29th. We, Tokyo Electric Power
Company, have conducted the nuclide analyses of that seawater.
Iodine -131, Cesium -134 and Cesium -137 were detected. We will conduct
evaluation in detail hereafter.
*At 10:08 am on April 19th, transferring the wastewater from the vertical
shaft of the turbine building of Unit 2 to the Centralized Radiation Waste
Treatment Facility was started. In order to check the transferring
facilities and enhance the investigating function, transferring was
temporarily suspended at 9:16 am on April 29th.
*On April 29th, spraying the dust inhibitor to prevent the diffusion of
radioactive material on the ground surface was conducted at the east side
of turbine building of Unit 4 at a total range of approximately 7,000m2
using the unmanned crawler dump truck. On April 29th, spraying the dust
inhibitor was conducted as the same method before at the mountain side of
the reactor building of Unit 5 at a total range of approximately 5,800m2.
*From 11:36 am to 2:05 pm on April 29, we have checked the status inside
the reactor building of Unit 1 using remotely-controlled robot and
confirmed that there was no significant 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 110KB)
* Revised past progress