Tokyo Elec. Power : (Jan 04,2012)Status of TEPCO's Facilities and its services after the Tohoku-Chihou-Taiheiyou-Oki Earthquake (as of 3:00 pm, January 4)
January 04, 2012 at 05:23 pm IST
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Press Release (Jan 04,2012)
Status of TEPCO's Facilities and its
services after the
Tohoku-Chihou-Taiheiyou-Oki Earthquake (as
of 3:00 pm, January 4)
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)
* On January 3, 2012, we conducted dust sampling at the upper part of
Unit 1 reactor building at emission filter of Unit 1 reactor building
cover.
* Since December 22, 2011, the atmospheric temperatures at point C of
Unit 1 Primary Containment Vessel (PCV) monitored by the Containment
Atmospheric Monitoring System had risen (the atmospheric temperature
of the PCV on December 22 was approx. 38°C, at 7 pm on December
27 was approx. 49°C). The other temperatures had not risen, so
we conducted a survey checking the reliability of the meters from 9
am to 10 am on December 28, and we confirmed that there are no
problems. From 11:00am to 12:15pm on the same day, we adjusted the
volume of Nitrogen injection, from approx. 8 m3/h to approx.18 m3/h,
and emission of the gas management system, from approx. 23 m3/h to
approx.30 m3/h, in order to identify the cause by monitoring the
system with the same injection and emission volume as before December
22. The temperature went up to approx. 54.6°C at 6 pm on
December 28 and fell to approx. 42.3°C at 11:00 am on January 4,
2012. Temperatures at other two points also indicated slight
increases but are currently in the stable status.
Point D: (Maximum) approx. 35.8°C at 5:00 pm on December 29, 2011
Tokyo Electric Power Company Holdings, Inc. is a holding company organized around two sectors of activity:
- production and sale of electricity (94% of net sales): 204.5 GWh sold in 2020/21;
- other (6%): primarily energy services (production of natural gas, construction and installation of energy production units, etc.), development and promotion of real estate assets and telecommunication services (TV broadcasting services, sale of software and computing services).
Almost all net sales are in Japan.
TOKYO ELECTRIC POWER COMPANY HOLDINGS, INC. 
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