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.
*Updates from previous press release are 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)
-At 7:30 pm on August 12, we adjusted the rate of water injection to Unit
2 to approximately 3.8 m3/h and that to Unit 3 to approximately 9.0 m3/h,
as we confirmed fluctuation in the rates of water injection to each unit.
-At 10:00 am on August 9, we resumed transferring low-level accumulated
water to Mega Float from a temporary tank where we had transferred from
the turbine building of Unit 6. At 10:12 am on the same day, we suspended
the transfer, as we confirmed accumulated water was leaking from the
transferring hose. At 1:35 pm on the same day, we restarted the transfer
after replacing the hose. At 5:00 pm on August 12, we completed the
transfer.
-At 10:00 am on August 12, we resumed transferring accumulated water from
the basement of the turbine building of Unit 6 to a temporary tank and
completed the transfer at 4:00 pm on the same day.
-At 6:17 pm on August 12, a process error alarm was generated in
decontamination instruments and water treatment facility was stopped. At
10:59 pm on the same day, we restarted the facility, as we had not found
any abnormality of it and estimated temporary abnormality of their
control system. At 11:33 pm on the dame day, we resumed water treatment.
-At 7:11 am on August 13, we manually stopped Evaporative Concentration
Apparatus (2B) in water desalination facility, as we found abnormality in
the apparatus. We continue operating other apparatuses in the facility.
Fukushima Daini Nuclear Power Station:
Units 1 to 4: shutdown due to the earthquake
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 56.1GW at the end of
August.
Also, in order to ensure the supply and demand balance in the Tohoku area
that have sustained severe damages from the earthquake and torrential
rains, we would like to supply maximum electricity to Tohoku Electric
Power Company by thoroughly implementing both supply and demand
countermeasures.
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 planned 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.
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Appendix: Past Progress (PDF 245KB)
* Revised past progress