The Unit 2 reactor at Talen Energy’s Susquehanna nuclear power plant that shut down for repairs Friday after an electrical disturbance is now back up and running, company officials said.
“The fault interrupted power supply to some of the systems we use to operate the unit,” said Jon Franke, site vice president at the Berwick, PA-based reactor.
“Our operators determined the need to bring the unit off-line, and completed the shutdown safely, as designed, using established plant procedures and reflecting the conditions they experienced due to the electrical fault,” he added.
Employees manually shut down the reactor after a fault in one of the unit’s 480-volt electrical distribution centers, company officials said.
Talen Energy investigated the shutdown and learned it happened because of a short in a breaker that supplies power to a ventilation fan, Franke said.
Unit 2 had been in continuous operation for 355 days, since its last scheduled refueling and maintenance outage in May 2015.