The Public Service Enterprise Group (PSEG) (NYSE:PEG) experienced an unscheduled outage at its 1,150-MW Unit 2 of the Salem nuclear plant in New Jersey on Feb. 14.
“The trip occurred because the Unit 2 main generator tripped on generator protection with reactor power greater than P-9 (49%),” according to an event report filed with the Nuclear Regulatory Commission (NRC).
“The cause of the generator protection trip that resulted in the reactor trip is unknown at this time. A troubleshooting team is being assembled to determine the exact cause for the generator protection actuation,” according to the event report filed with NRC.
The unit was still listed at zero generation early Feb. 16 by the NRC.
“No safety related equipment or major secondary plant equipment was tagged for maintenance prior to the event. There were no personnel injuries as a result of this event,” according to the event report.
There was no impact on Salem Unit 1.
“Salem 2 shut down Sunday night 858 pm due to an issue on the non-nuclear side of plant,” a PSEG spokesman said Feb. 16. “Generator protection actuated due to an electrical issue. This is similar to what happened two weeks ago though we continue to troubleshoot to identify the exact cause. An estimate on a return to service is not available,” the company spokesman said.
PSEG’s Salem Units 1 and 2 are both pressurized water reactors (PWRs) located in Salem County, N.J. The units rely on the Delaware River for their water source.