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Top > Releases ・ Announcements > Fukushima Daiichi NPS Prompt Report > 2013 > Temporary Suspension of Unit 2 Spent Fuel Pool Alternative Cooling System at Fukushima Daiichi Nuclear Power Station (Follow-up Report 2)

Fukushima Daiichi NPS Prompt Report 2013

Fukushima Daiichi NPS Prompt Report (Apr 22, 2013)Temporary Suspension of Unit 2 Spent Fuel Pool Alternative Cooling System at Fukushima Daiichi Nuclear Power Station (Follow-up Report 2)

This is a follow-up report on the temporary suspension of Unit 2 spent fuel pool alternative cooling system which occurred today (April 22).

During the suspension of Unit 2 spent fuel pool alternative cooling system, the dead mice have been removed and a protection cover to prevent the entry of small animals has been installed.

Since no problem was found with the transformer as a result of inspection, the cooling system was restarted at 3:48 PM. No abnormality has been found with its operation after restart.

Though Unit 2 spent fuel pool water temperature increased from 13.9℃ (when the cooling was suspended) to 14.0℃, there is no problem with the spent fuel pool water temperature control considering that there is a sufficient margin to the maximum allowed temperature (65℃).


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