Cleve Reasoner en Callaway Nuclear Plant Back Online <p>Missouri's sole nuclear power plant is back online after being shut down for more than three weeks.</p><p>Ameren Missouri's Callaway Energy Center was taken off line July 26 after an electrical arc caused a small fire. &nbsp;The plant resumed operations Sunday morning.&nbsp; Spokesman Cleve&nbsp;Reasoner says the arc was triggered when a ventilation louver came loose and got too close to the power cables.</p> Mon, 19 Aug 2013 21:25:22 +0000 Marshall Griffin 29212 at Callaway Nuclear Plant Back Online