The Salem 2 nuclear reactor in Lower Alloways Creek Township, NJ, returned to service after shutting down Friday because of issues with one of the control rods, officials said.
Salem Unit 2 came back online and started sending power to the regional power grid at 10:24 a.m. Sunday, according to Joe Delmar, spokesman for PSEG Nuclear.
Power ascension to full power was in progress on Sunday.
On Friday morning, control room operators were conducting monthly testing on the control rods used to control reactor power. During the monthly testing, one of the control rods dropped out of its expected position.
In response to the control rod mispositioning, Delmar said control room operators took appropriate actions including adding boron to the reactor water to reduce power level and maintain shutdown margin as required by Nuclear Regulatory Commission (NRC) technical specifications.
Operators then made the subsequent conservative decision to safely shut the unit down, he said.
Salem Unit 1 and the neighboring Hope Creek plant remained at full power.
Salem 2 is one of three reactors operated by PSEG Nuclear at its generating site on Artificial Island here.