TEPCO says a faulty temperature gauge may be behind higher readings . Comment: The plant was declared to be in `` cold shutdown '' on December 16 . Earthquake and tsunami caused nuclear chaos in Japan last March .
TEPCO says a faulty temperature gauge may be behind higher readings . Temperatures in Unit 2 at the Fukushima plant have been steadily rising . The plant was declared to be in `` cold shutdown '' on December 16 . Earthquake and tsunami caused nuclear chaos in Japan last March .