In this 1999 file photo, the Novomoskovsk nuclear submarine, a Delta-IV-class nuclear submarine, is moored at the Arctic base of Vidyayevo. Russia's emergency ministry said Thursday, Dec. 29, 2011 a nuclear submarine fire at an Arctic shipyard has caused no radiation leak, or injuries. The ministry said in a statement carried by the ITAR-Tass news agency that a fire on the Yekaterinburg nuclear sub resulted from a violation of technological rules. (AP Photo, File)