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Corporate Information

 
Press Release (Mar 12,2011)
Impact to TEPCO's Facilities due to Miyagiken-Oki Earthquake (as of 8 AM)
 
Below is major impact to TEPCO's facilities due to the Miyagiken-Oki 
Earthquake that occurred yesterday at 2:46PM. 
*new items are underlined
 
[Nuclear Power Station]
Fukushima Daiichi Nuclear Power Station:
  Units 1 to 3: shutdown due to earthquake
  Units 4 to 6: outage due to regular inspection 
* The national government has instructed evacuation for those local 
residents within 10km radius of the periphery. 
* Measurement of radioactive material (Iodine, etc.) by monitoring car 
indicates increasing value compared to normal level. One of the 
monitoring posts is also indicating higher than normal level. We will 
continue monitoring discharge of radioactive material from exhaust stack 
and discharge canal, etc. 
* We have decided to implement measures to reduce the pressure of the 
reactor containment vessel for those units that cannot confirm certain 
level of water injection by the Reactor Core Isolation Cooling System, 
in order to fully secure safety. 
 
Fukushima Daini Nuclear Power Station:
 Units 1 to 4: shutdown due to earthquake 
* The national government has instructed evacuation for those local 
residents within 3km radius of the periphery and indoor standby for those 
local residents between 3km and 10km radius of the periphery. (We are 
very sorry to have informed wrongly about evacuation area in our press 
release at 7am.)  
 
Kashiwazaki Kariwa Nuclear Power Station:
  Units 1, 5, 6, 7: normal operation
  Units 2 to 4: outage due to regular inspection
  
*There was no shutdown due to the earthquake occurred in the northern 
part of Nagano Prefecture at around 3:58AM today. 
* Survey data on radiation by exhaust stack monitors and monitoring cars 
have indicated no departure from normal level for all nuclear power 
stations. 
 
[Thermal Power Station]
Hirono Thermal Power Station Units 2 and 4: shutdown due to earthquake
Hitachinaka Thermal Power Station Unit 1: shutdown due to earthquake
Kashima Thermal Power Station Units 2, 3, 5, 6: shutdown due to earthquake
Chiba Thermal Power Station Unit 2 Axis 1: shutdown due to earthquake
Ohi Thermal Power Station Units 2, 3: shutdown due to earthquake
Goi Thermal Power Station Unit 4: had been shutdown due to earthquake but 
has restarted
Higashi-Ohgishima Thermal Power Station Unit 1: shutdown due to earthquake
 
[Hydro Power Station] 
 8 stations in Fukushima Prefecture, 2 stations in Yamanashi Prefecture, 
were shutdown due to earthquake. 
Power stations in Tochigi Prefecture have been restored.
  
[Transmission System, etc.]
 Six substations shown below have been shutdown: 
- Naka Substation
- Shin Motegi Substation
- Joban Substation
- Ibaraki Substation
- Ishioka Substation
- Nishi Mito Substation
- Kawachi Substation
- Haga Substation
- Mito Hokubu Substation
 
[Blackout in TEPCO's Service Area] 
 Total of about 1.09 million households are out of power. 
 Tokyo: 308 
 Kanagawa Pref.: 0 
 Tochigi Pref.: 238,872 
 Chiba Pref.: 196,994 
 Saitama Pref: 0 
 Gunma Pref.: 0 
 Ibaraki Pref: 658,170 
 Yamanashi Pref: 0 
 Shizuoka Pref: 0 (east of Fuji River) 
 
[Supply and Demand Status within TEPCO's Service Area to Secure Stable 
Power Supply] 
Backup supply from Shinshinano Conversion Station: 600MW
Backup supply from Sakuma Conversion Station: 300MW
Backup supply from Higashi Shimizu Conversion Station: 100MW
 
Because TEPCO's facilities have been seriously damaged, power shortage 
may occur.
TEPCO appreciates customers' cooperation in reducing electricity usage by 
avoiding using unnecessary lighting and electrical equipment.
 
We are taking all measures to restore power, however, we expect extremely 
difficult situation in power supply for tomorrow as well.
We kindly ask our customers to cooperate with us in reducing usage of 
power.
 
Please do NOT touch cut-off electric wires. 
 
* Revised past progress 
 
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