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 compiled the roadmap towards restoration from the
accident and then we updated the roadmap considering the current situation,
on May 17th. 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 6:26 pm on June 5, transfer of accumulated water in the Unit 3 turbine
building to condenser was initiated. At 10:44 am on June 9, the transfer
was completed.
- At 1:42 pm on June 9, freshwater injection to Unit 3 spent fuel pool
using fuel pool cooling and filtering system was initiated(from 1:45 pm
to 2:40 pm, hydrazine was also injected). Injection was completed at
3:31 pm.
- At 9:00 am on June 9, transfer of accumulated water in Unit 6 turbine
building underground was resumed.
- From 11:47 am to 12:14 pm on June 9, TEPCO employees entered into Unit 3
reactor building and conducted radiation dose survey by Γ camera as a
preparation for the nitrogen injection into the PCV.
- On June 9, using a concrete pumping vehicle, we have been spraying dust
inhibitor, which prevents the radioactive materials from dispersing, to
the roof and the wall of Unit 1 and 3 turbine building. On June 9,
workers have been spraying the dust inhibitor near the main gate.
- At 10:30 on June 9, water flow test of circulating seawater purification
facility located in the Unit 2 and 3 screen area was initiated. The test
was completed at 3:00 pm.
Fukushima Daini Nuclear Power Station:
Units 1 to 4: shutdown due to the earthquake
- At around 6:10 pm on June 8, during the work of draining water stored in
the tank, for the purpose of inspection of emergency underground tanks of
High-voltage Start-up Transformer, TEPCO employee verified the presence
of oil that had leaked to the sea surface around the water discharge
canal of Unit 3 and 4, Fukushima Daini Nuclear Power Station. Draining
stored water was suspended and oil adsorption mattresses were utilized
to prevent the spread of oil. At 9:50 pm on June 8, oil fence barriers
were installed and extremely thin oil layer inside the oil fence was
observed. Maximum amount of leaked oil was estimated to be 0.5 m3. The
cause of leakage is under investigation. Discharged water is all rain
water, and discharge was done through a duct, thus there is no discharge
of radioactive materials to the sea.
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 2 and 4: 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.
[Perspective of Power Supply and Demand Balance in this Summer]
We have worked to restore electricity supply after our nuclear and thermal
power facilities were severely damaged by Tohoku-Chihou-Taiheiyou-Oki
Earthquake. This time, we revised that the supply capacity in this summer
would increase because we could plan to secure an additional capacity.
However, in order to maintain the policy of avoiding further implementation
of rolling blackouts during the summer, in addition to the above increase
of the supply capacity, we sincerely ask for your continued cooperation in
reducing electricity consumption. Now we are creating concrete measures
considering "Outline of Countermeasures for Power Supply and Demand During
Summertime" presented by the Electricity Supply-Demand Emergency Response
Headquarters of the Japanese government.
(Previously Announced)
It seems that planned outage could be escaped thanks to your understanding
for brownout.
However In the event that an unplanned outage such as excessive continuous
operation in old plants and a sudden increase of power demand due to
unusual hot temperature occur, there is a possibility to affect a stable
power supply. In order to maintain the policy of avoiding rolling
blackouts, we steadily implement to install additional power capacity we
have planed, and we continuously do our best efforts to secure supply
capacity.
We apologize for the inconvenience this may cause and appreciate for your
cooperation for brownout.
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Appendix: Past Progress (PDF 343KB)
* Revised past progress