Print

Language



Corporate Information

 
Press Release (Mar 13,2011)
Impact to TEPCO's Facilities due to Miyagiken-Oki Earthquake (as of 8AM)
 
There was an error in the information regarding Unit 3, therefore some
changes were made on May 16th. 
--------------------------------------------------------------------------
 
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 20km radius of the site periphery.
* The value of radioactive material (iodine, etc) is increasing according 
 to the monitoring car at the site (outside of the site). One of the 
 monitoring posts is also indicating higher than normal level.
* Since the amount of radiation at the boundary of the site exceeds the 
 limits, we decide at 4:17PM, Mar 12 and we have reported and/or noticed 
 the government agencies concerned to apply the clause 1 of the Article 15 
 of the Radiation Disaster Measure at 5PM, Mar 12.
* In addition, a vertical earthquake hit the site and big explosion has 
 happened near the Unit 1 and smoke breaks out around 3:36PM, Mar 12th.
 We started injection of sea water into the reactor core of Unit 1 at 
 8:20PM, Mar 12 and then boric acid subsequently.
* (Unit 3) High Pressure Coolant Injection System of Unit 3 automatically 
 stopped. We endeavored to restart the Reactor Core Isolation Cooling  
 System. 
 but failed.  As such, we determined, at 5:10 AM, on Mar 13th that the 
 specific incident (Loss of reactor cooling functions) per clause 1 of 
 Article 15 of Act on Special Measures Concerning Nuclear Emergency 
 Preparedness occurred and we reported the government agencies concerned at 
 5:58AM, on Mar 13th. 
 In order to fully secure safety, we operated the vent valve to reduce the 
 pressure of the reactor containment vessels (partial release of air 
 containing radioactive materials) and completed the procedure at 8:41AM, 
 Mar 13, 
* We continue endeavoring to secure the safety that all we can do and 
 monitoring the periphery.
 
Fukushima Daini Nuclear Power Station:
 Units 1 to 4: shutdown due to earthquake
* The national government has instructed evacuation for those local 
 residents within 10km radius of the periphery.
* At present, we have decided to prepare implementing measures to reduce 
  the  pressure of the reactor containment vessel (partial discharge of air 
 containing radioactive materials) in order to fully secure safety.
 These measures are considered to be implemented in Units 1, 2 and 3 and 
 accordingly, we have reported and/or noticed the government agencies 
 concerned.
* Unit 3 has been stopped and being "nuclear reactor cooling hot stop" at 
 12:15PM.
* The operator trapped in the crane operating console of the exhaust stack 
 was transferred to the ground at 5:13PM and confirmed the death at 5:17PM.
 
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 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
Ohi Thermal Power Station Units 2, 3: shutdown due to earthquake
Higashi-Ohgishima Thermal Power Station Unit 1: shutdown due to earthquake
 
[Hydro Power Station]
* All the stations have been restored.
 
[Transmission System, etc.]
4 substations shown below have been shutdown:
- Naka Substation
- Shin Motegi Substation
- Joban Substation
- Ibaraki Substation
- Nishi Mito Substation
 
[Blackout in TEPCO's Service Area]
 Total of about 0.31 million households are out of power.
 Tokyo: 0
 Kanagawa Pref.: 0
 Tochigi Pref.: 7,221 
 Chiba Pref.: 301 
 
 Saitama Pref: 0 
 Gunma Pref.: 0  
 Ibaraki Pref: 298,977 
 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 
 
back to page top