An alert imposed after smoke was spotted at the Quad Cities Generating Station in western Illinois was lifted after eight hours.
Exelon Generation officials say the smoke was spotted Wednesday after a pipe released water onto an electrical system. Spokesman William Stoermer says Quad Cities Unit 2 had been removed from service Monday so workers could replace a valve. The unit was in being restarted when smoke was detected around 1:40 p.m. The alert was lifted around 9:30 p.m.