Fukushima Plant's Cooling System Fails—Again Second cooling glitch in a month By Newser Editors and Wire Services Posted Apr 5, 2013 2:40 AM CDT 24 comments Comments This aerial file photo taken on March 11, 2013, shows reactor buildings Unit 1 to 4, from right in the middle of the photo, at the Fukushima Dai-ichi nuclear power plant in northeastern Japan. (AP Photo/Kyodo News, File) (Newser) – Japanese nuclear regulators say the cooling system has failed for a storage pool for fuel at one of the reactors at the tsunami-damaged nuclear plant in the northeast. There was no immediate danger from the failure, the second at the plant in a month. A spokesman for the Nuclear Regulation Authority says an alarm went off today about the problem at reactor No. 3. The cause is still under investigation. A spokesman for the plant's operator said the cooling system can be turned off for two weeks before temperatures approach dangerous levels. The Fukushima Dai-ichi plant went into multiple meltdowns after the March 2011 tsunami. The plant is being decommissioned, but continues to have glitches. Last month, a power outage led to a cooling system not working for two days.