Power outages, downed communication lines knocked out most radiation monitoring systems in disaster areas 29 May 2011 Most radiation monitoring systems in Fukushima, Miyagi and Ibaraki prefectures broke down temporarily after the March 11 earthquake and tsunami, preventing local authorities from gauging the ensuing nuclear crisis, prefectural officials said. Twenty-two of the 23 round-the-clock radiation monitors installed around the crisis-hit Fukushima No. 1 nuclear plant and at the nearby Fukushima No. 2 nuclear complex stopped sending data to the prefectural monitoring center about three hours after the quake, officials said.