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, 2011, we have compiled the roadmap towards restoration from the
accident and on July 19 we accomplished the Step1 target "Radiation dose
is in steady decline". Then on December 16 we confirmed the accomplishment
of the Step 2 target "Release of radioactive materials is under control
and radiation doses are being significantly held down".
In addition, on December 21, 2011, we have compiled the "Mid-to-long-Term
Roadmap toward the Decommissioning of Fukushima Daiichi Nuclear Power
Units 1-4, TEPCO".
In addition to the maintenance of the plant's stable condition, we will
implement Mid-to-Long Term countermeasures towards the decommissioning of
Fukushima Daiichi Nuclear Power Units 1-4 to enable evacuees to return to
their homes as soon as possible and reduce the anxiety of the people in
Fukushima and the whole nation as soon as possible.
Below is the status of TEPCO's major facilities.
*Updates since the previous press release underlined.
[Nuclear Power Station]
· Fukushima Daiichi Nuclear Power Station: Unit 1 to 3: shut down due to
the earthquake
(Units 4 to 6: outage due to regular inspections)
*At 9:15 am on January 6, 2012, we started dust sampling by large size
crane at upper part of the reactor building of Unit 3. At 12:30 pm,
dust sampling was finished.
*At 10:46 am on January 6, 2011, due to a switching operation of
injection pipe for the feed water system in preparation for a test run
of the core spray pump installed at T/B, we decreased the feed water
system injection from approx. 0.2 m3/h to 0m3/h and increased
core spray system water injection from approx. 9.2 m3/h to 9.3 m3/h.
The switching operation was finished at 11:11 am, thus the feed water
system injection was adjusted from approx. 0m3/h to 1.0m3/h as well as
core spray system water injection from approx. 9.3 m3/h to 9.0 m3/h
at 11:25 am.
*On 11:05 am, we conducted a dust sampling near the large stuff entrance
at Unit 3 Reactor Building by using a robot. At 12:35 pm, the dust
sampling was finished.
*12:33 pm on January 6, 2012, in order to decrease amount of steam
generated as well as pressure in PCV in preparation for inner
inspection for PCV, amount of nitrogen injection to PCV was adjusted from
approx.
10 m3/h to approx. 13m3/h. Also, at 1:26 pm, exhaust amount from
PCV gas management system was adjusted from approx. 30 m3/h to approx.
35 m3/h.
· Fukushima Daini Nuclear Power Station:
(Units 1 to 4: shutdown due to the earthquake)
· Kashiwazaki Kariwa Nuclear Power Station: Units 5, 6: under normal
operation
(Units 1 to 4 and 7: outage due to regular inspections)
[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.
[Impacts on Power Supply and Demand Balance]
This winter, there will be some minus factors such as the regular
inspection of Unit 5 at Kashiwazaki-Kariwa Nuclear Power Station. On
the other hand, there will be several plus factors such as the
recovery of the common thermal power stations which suffered the
earthquake. As a result, we expect to secure 54.9 GW (at the end of
December), 54.6 GW (at the end of January), 53.7 GW (at the end of
February) supply power.
Compared to the maximum demand in the last winter, which is 51.5 GW, we
will have 2.2 - 3.4 GW generation reserve margin.
We expect to maintain stable power supply this winter, however, as there
remains possibilities of unplanned shutdowns at our power stations and
growth in the demand according to the rapid change in the temperature, we
would like to ask your reasonable effort to save electricity.
We will continue to make our efforts to maintain stable operation and
maintenance of the power facilities in order to "prevent in principle" the
planned blackouts and secure power supply.
Appendix: Past Progress (As of 3:00 pm, January 6, 2012) (PDF 269KB)
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB)
* Revised past progress