25 February 2014 (00:00 UTC-07 Tango)/24 Rabi ‘ath-Thani 1435/06 Esfand 1392/26 Bing-Yin (1st month) 4712

Tokyo Electric Power Company is investigating why cooling fans on the reactor Unit 4 spent fuel pool stopped working.

Alarms sounded, and work to remove fuel rods was stopped.

A secondary power source for the cooling system is being turned on.  TEPCo suspects the power cable for the primary power source was cut by throwaway workers while they did excavation work on a road.