Operators at PPL's Susquehanna nuclear power plant disconnected Monday (11/19) from the regional power grid shortly after returning to service because of an oil leak.
The hydraulic oil leak is on a system that controls the flow of steam into the turbine, PPL officials said.
Operators manually shut down the reactor and plant systems responded as designed, plant officials said.
Susquehanna employees are investigating the cause of the oil leak.
"Shutting down the reactor is the safest course of action until we can determine the reason for the oil leak and make the necessary repair," said Timothy S. Rausch, PPL Susquehanna senior vice president and chief nuclear officer. "All systems are functioning as expected to keep the unit in a safe condition."
The oil leak is not affecting employee or public safety and is contained within the Turbine Building, according to plant officials. Unit 1 is operating safely at full power.
Unit 2 had just returned to service earlier Monday after completing a turbine blade inspection and repair of a computer system that malfunctioned on Nov. 9, causing operators to shut down the reactor.
The Susquehanna plant is located in Luzerne County, about seven miles north of Berwick.