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Press Release (Apr 18,2011)
Status of TEPCO's Facilities and its services after the Tohoku-Chihou-Taiheiyou-Oki Earthquake (as of 9:00AM, April 18th)
 
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. 

Below is the status of TEPCO's major facilities.
*New items have been 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) * From 5:39 pm to 9:22 pm, April 17th, the spent fuel pool of Unit 4 was sprayed with water using the concrete pumping vehicle. * On March 20th, 21st, 23rd to April 16th, we detected radioactive materials in the air collected at the site of Fukushima Daiichi Nuclear Power Station. The data of detected three nuclides (Iodine-131, Cesium- 134 and Cesium-137) was reported as fixed data. Other nuclides figures are to be re-evaluated based on the improved measures for recurrence prevention which have been prepared in accordance to a strong warning by NISA on April 1st. * On March 21st, 23rd to April 16th, we detected radioactive materials from seawater around the discharge canal. The data of detected three nuclides (Iodine-131, Cesium-134 and Cesium-137) was reported as fixed data. Other nuclides figures are to be re-evaluated based on the improved measures for recurrence prevention which have been prepared in accordance to a strong warning by NISA on April 1st. * We conducted nuclide analysis on subsurface water (sub drain) near the turbine buildings and detected Iodine-131, Cesium-134 and Cesium-137 on April 6th and 13th. As a radioactive dose of the sample collected on April 13th increased compared to that of April 6th, we received an oral instruction from Nuclear and Industrial Safety Agency to strengthen the monitoring. In response, we increased the frequency of the sampling of the subsurface water (sub drain) of Units 1 to 6 and deep well located in the station from once a week to three times a week. We detected Iodine-131, Cesium-134 and Cesium-137 during the sampling survey on April 16th. * At 2:34 pm, April 17th, the occurrence of a short circuit caused by the lack of repair of the end of the unused cable which is connected parallel to the power of spent fuel common pool caused the circuit breaker of the power side to open resulting in suspended power supply to the spent fuel common pool. However, at 5:30 pm, April 17th, the power of the spent fuel common pool was restored after the removal and inspection of the cable. * From 11:30 am to 2:00 pm, April 17th, we confirmed plant conditions (radiation dose, temperature, measurement of oxygen density, etc) using the remote-controlled robot. In addition, we confirmed the plant conditions inside of Unit 1's reactor building from 4:00 pm to 5:30 pm, April 17th.
 
Fukushima Daini Nuclear Power Station: Units 1 to 4: shutdown due to the earthquake
 
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 the earthquake - Hitachinaka Thermal Power Station Unit 1: Shutdown due to the earthquake - Kashima Thermal Power Station Unit 6: 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.
 
[Avoidance of further Implementation on Planned Rolling Blackouts and Request for Conserving Electricity Consumption] Currently, we are working to restore electricity supply after our nuclear and thermal power facilities were severely damaged by Tohoku-Chihou- Taiheiyou-Oki Earthquake. The widespread understanding and cooperation of our customers to conserve electricity have contributed to the improvement of this tight power supply-demand balance situation. Amidst this backdrop, since the electricity supply will be able to balance with the demand for the time being, we have decided not to implement further rolling blackouts in principle. However, we must sincerely ask for your continued cooperation in reducing electricity consumption due to the possible increase in demand caused by warmer weather or unexpected trouble at power stations that are currently being restored to service. In case the electricity supply-demand balance becomes tighter than expected, as stated, we may reluctantly restart the implementation of rolling blackouts. We kindly ask for your cooperation. We will do our best to maintain this policy of avoiding further implementation of rolling blackouts during the summer.
Appendix: Past Progress (PDF 136KB)
 
* Revised past progress
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