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 roadmap considering the current situation, on June
17. 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 8:01 pm on July 14th, we started to inject nitrogen gas into Primary
Containment Vessel of Unit 3.
- At 1:00 pm on 13th July, transportable monitoring post, which was
monitoring radiation dose at the main gate, recorded zero. We checked
the monitoring equipment and restored by restarting power at 2:55 pm on
the day. At 10:00 pm on the same day, we found the same equipment showing
zero. At 6:15 pm on July 14th, we finished repairing the transportable
monitoring post.
- At 10:00 am July 14, we resumed transferring low radioactive accumulate
water, which had been transferred from Unit 6 turbine building to
temporary tanks, from temporary tanks to the Mega Float. At 5:00 pm on
the same day, we finished transferring.
- At 11:00 am on July 13th, water treatment facility was stopped for system
flashing. At 1:07 pm, we confirmed the leakage at the chemical injection
line of the coagulation settling equipment of the water treatment facility
and flashing was paused. At 12:07 pm on July 14, repairing of the leakage
point was completed. At 2:58 pm on the same day, we activated the water
treatment facility and at 6:30 pm on the same day, we restarted water
treatment.
- At 5:14 am on July 15th, we stopped the facility in order to investigate
the causes of decrease of rated flow volume of water treatment.
Fukushima Daini Nuclear Power Station:
Units 1 to 4: shutdown due to the earthquake
- From 3:05 pm on to 3:55 pm July 14th, we cleaned up the inside of the
covers that veil measuring devices and the feet of a part of the
monitoring posts that are installed in the site.
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 Unit 4: we have resumed generating
electricity since 5:17 pm on July 14th.
[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 with 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 56.8GW at the end of July, and 55.6GW
at the end of August.
Also, in order to support balance of demand and supply 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 55.4GW at the end of July, and 54.2GW 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 205KB)
* Revised past progress