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Summary of the Status of Reactor Units in Fukushima Daiichi at 19 March, 12:00 UTC

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International Atomic Energy Agency
International Atomic Energy Agency

The document reports on the status of 6 nuclear reactors after an earthquake (EQ). Reactors 1-3 automatically shut down, with Reactors 1 and 2 sustaining damage to their cores, fuel, and containment integrity. Reactor 4 was in outage. Reactors 5-6 were also in outage and showed no damage, though water levels and pressures in the reactors were being monitored.

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03/19/11 22:10 Unit 1 2 3 4 Power (MWe/th) 460/1380 784/2381 784/2381 784/2381 Type of Reactor BWR-3 BWR-4 BWR-4 BWR-4 Status at time of EQ In service – auto shutdown In service – auto shutdown In service – auto shutdown Outage Core and fuel Damaged Damaged Damaged No fuel rods RPV & RCS integrity Unknown Unknown Unknown N/A Containment integrity No damage reported Damage suspected No information N/A AC Power Substation connected Substation connected Not available Not available Building Severe damage Slight damage Severe damage Severe damage Water level of RPV Around half of Fuel assembly Around half of Fuel assembly Around half of Fuel assembly N/A Pressure of RPV Stabilized Stabilized Stabilized CV Pressure Drywell Recovered indication Stable Stable Water injection to RPV Seawater Seawater Seawater N/A Water injection to CV No information No information No information N/A Spent Fuel Pool Status No information No information No information No information
Date : March 19 Reporting time: 03/19/11 22:10 Unit 5 6 Power 784/2381 1100/3293 Type of Reactor BWR-4 BWR-5 Status at the EQ occurred Outage Outage Core and Fuel No damage expected No Damage expected Containment int. No damage expected No damage expected AC Power 2nd Emergency Diesel from unit 6 Emergency Diesel Building No damage reported No damage reported Water level of RPV Above fuel/decreasing Above fuel/decreasing Pressure of RPV Slightly increasing Slightly increasing Containment Pressure No information No information Water injection to RPV Injection in Progress Injection in Progress Water injection to CV Not needed now Not needed now Spent Fuel Pool Temperature Slowly increasing Slowly increasing Severe condition Concern No immediate concern

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Summary of the Status of Reactor Units in Fukushima Daiichi at 19 March, 12:00 UTC

  • 1. 03/19/11 22:10 Unit 1 2 3 4 Power (MWe/th) 460/1380 784/2381 784/2381 784/2381 Type of Reactor BWR-3 BWR-4 BWR-4 BWR-4 Status at time of EQ In service – auto shutdown In service – auto shutdown In service – auto shutdown Outage Core and fuel Damaged Damaged Damaged No fuel rods RPV & RCS integrity Unknown Unknown Unknown N/A Containment integrity No damage reported Damage suspected No information N/A AC Power Substation connected Substation connected Not available Not available Building Severe damage Slight damage Severe damage Severe damage Water level of RPV Around half of Fuel assembly Around half of Fuel assembly Around half of Fuel assembly N/A Pressure of RPV Stabilized Stabilized Stabilized CV Pressure Drywell Recovered indication Stable Stable Water injection to RPV Seawater Seawater Seawater N/A Water injection to CV No information No information No information N/A Spent Fuel Pool Status No information No information No information No information
  • 2. Date : March 19 Reporting time: 03/19/11 22:10 Unit 5 6 Power 784/2381 1100/3293 Type of Reactor BWR-4 BWR-5 Status at the EQ occurred Outage Outage Core and Fuel No damage expected No Damage expected Containment int. No damage expected No damage expected AC Power 2nd Emergency Diesel from unit 6 Emergency Diesel Building No damage reported No damage reported Water level of RPV Above fuel/decreasing Above fuel/decreasing Pressure of RPV Slightly increasing Slightly increasing Containment Pressure No information No information Water injection to RPV Injection in Progress Injection in Progress Water injection to CV Not needed now Not needed now Spent Fuel Pool Temperature Slowly increasing Slowly increasing Severe condition Concern No immediate concern

Editor's Notes

  1. 03/19/11 22:10
  2. 03/19/11 22:10