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, we have compiled the roadmap towards restoration from the
accident and then we updated the progress status of roadmap considering
the current situation, on July 19. Accomplishment of the Step1 target
"Radiation dose is in steady decline" has been confirmed.
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.
[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)
-From 10:03 to 10:43 am on August 8, we stopped the residual heat removal
system pump (D) in order to switch the power source of the pump (C) as
well as conducting its commissioning (C)
-At 10:00 am on August 8, we resumed transferring low-level accumulated
water to Mega Float which had been transferred from turbine building of
Unit 6 to temporary tank.
-At 11:00 am on August 8, we started transferring accumulated water from
the underground level of reactor building of Unit 6 to a temporary tank.
-At 9:49 am on August 8, we started transferring accumulated water from
miscellaneous solid waste volume reduction treatment building (high
temperature incinerator building) to process main building at centralized
radiation waste treatment facility.
Fukushima Daini Nuclear Power Station:
Units 1 to 4: shutdown due to the earthquake
-At 9:31 am on August 8, among 7 monitoring posts installed in the site
boundary, we started regular inspection on No.5.
-At 1:57 pm on August 8, we stopped residual heat removal system (B) due
to the switching of temporary power cables in the heat exchanger building
of Unit 2. At 2:29 pm, we activated residual heat removal system (A).
Kashiwazaki Kariwa Nuclear Power Station:
Units 5, 6, 7: normal operation
(Units 1 to 4: outage due to regular inspection)
[Thermal Power Station]
-Power supply has returned to normal and facilities damaged by the
earthquake are now being handled in a timely manner.
[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.
[Perspective of Power Supply and Demand Balance in this Summer]
In regard to the supply side in this summer, taking in account of the
acceleration of restoration schedule for Hirono Thermal Power Station,
more purchase of privately generated power, and excluding the power supply
from 60Hz areas which had been planned (due to the current difficult
situation), supply capacity outlook is amended to 57.2GW at the end of
July, and 56.1GW at the end of August.
Also, in order to support the supply and demand balance in the Tohoku area,
which suffered severe damage from the quake, we would like to supply
maximum of 1.4GW to Tohoku Electric Power Company by thoroughly
implementing both supply and demand countermeasures. The supply capacity
in this regard will be 55.8GW at the end of July, and 54.7GW at the end
of August.
Estimated peak demand of 55GW for this summer is 5GW lower than that of
last year. This incorporates the saving of electricity from "Outline of
Countermeasures for Power Supply and Demand During Summertime" and
restoration from decrease of production due to the quake.
As the occurrence of unplanned outage of aged thermal power stations or
sudden increase of demand due to unexpected high temperature during summer
may cause difficulties in maintaining stable demand supply balance, in
order to continue to avoid rolling blackouts, we will steadily maintain
supply capacity, and continue our efforts on reliable operation and
maintenance of power facilities.
We apologize for the inconvenience this may cause and appreciate for your
cooperation to save electricity.
Appendix: Past Progress (PDF 430KB)
* Revised past progress