At around 6:57 PM on March 18, there was an incident where the power supply facilities in the Main Anti-earthquake Building at Fukushima Daiichi Nuclear Power Station momentarily stopped. The updates on the incident are provided below.
-The primary and secondary systems of Unit 1 spent fuel pool alternative cooling system were started at 2:20 PM and cooling has been restarted.
-Unit 3 spent fuel pool alternative cooling system is planned to be restarted at 8:00 PM today.
-The primary system of Unit 4 spent fuel pool alternative cooling system was started at 1:20 PM. The secondary system is planned to be restarted at 8:00 PM today.
-Common pool cooling purification system is planned to be restarted at 8:00 AM tomorrow.
Other affected facilities are currently being recovered. The current water temperatures of the suspended spent fuel pools have no impact on the spent fuel pool water temperature control.